Home

Model 42i-LS - User Manual

1. e Inthe Main Menu choose Service gt Converter Set Temperature e Use and to increment or decrement the numeric values e Press to save the new set temperature Pressure Calibration The Pressure Calibration menu is used to calibrate the pressure sensor to zero span or restore factory default values The pressure calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in this chapter 3 84 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Operation Service Menu The pressure sensor s zero counts and span slope are displayed on the menu WARNING This adjustment should only be performed by an instrument service technician e Inthe Main Menu choose Service gt Pressure Calibration Calibrate Pressure Zero The Calibrate Pressure Zero screen calibrates the pressure sensor at zero pressure Note A vacuum pump must be connected to the pressure sensor before performing the zero calibration e Inthe Main Menu choose Service gt Pressure Calibration gt Zero e Press to save the current pressure reading as the zero reading Calibrate Pressure Span The Calibrate Pressure Span screen allows the user to view and set the pressure sensor calibration span point Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 85 Operation Service Menu Note The plumbing going t
2. Note The ozonator must be ON to obtain NO NO and NO readings As an additional safety precaution a lit LED mounted on the measurement interface board indicates that the ozonator is on a e Inthe Main Menu choose Instrument Controls gt Ozonator e Press to toggle and set the ozonator on or off Thermo Fisher Scientific PMT Supply Auto Manual Mode Thermo Fisher Scientific Operation Instrument Controls Menu The PMT Supply screen is used to turn the PMT power supply on or off This is useful in a troubleshooting situation e Inthe Main Menu choose Instrument Controls gt PMT Supply e Press to toggle and set the PMT supply on or off The Auto Manual Mode screen allows selection of the automatic mode NO NO NO mode manual NO or NO mode manual NO The auto mode switches the mode solenoid valve automatically on a 10 second cycle so that NO NO and NO concentrations are determined The manual NO mode puts the mode solenoid valve into the open position so that the sample gas bypasses the NO to NO converter Therefore only the NO concentration is determined The manual NO mode puts the mode solenoid valve into the closed position so that the sample gas passes through the NO to NO converter Therefore only the NO concentration is determined In the manual modes additional averaging times of 1 2 and 5 seconds are available from the Averaging Time screen e Inthe Main Menu choose Instrument
3. HI NO dual mode HI NO dual mode HI NO dual mode Range NO auto range mode Analog Inputs Analog Input 5 Analog Input 6 Analog Input 7 Analog Input 8 Analog Input Configuration The Analog Input Configuration menu displays a list of the 8 analog input channels available for configuration This screen is displayed if the I O expansion board option is installed Configuration includes entering descriptor units decimal places choice of 1 10 points in the table and corresponding number of points selected e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config 3 58 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu Descriptor The Descriptor screen allows the user to enter the descriptor for the selected analog input channel The descriptor is used in datalogging and streaming data to report what data is being sent out The descriptor may be from 1 to 3 characters in length and defaults to IN1 to IN8 user input channel number e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Descriptor e Press to save the new descriptor Units The Units screen allows the user to enter the units for the selected analog input channel The units are displayed on the diagnostic screen and in datalogging and streaming data The units may be from 1 to 3
4. Note An error in the zero setting of the pressure transducer does not introduce a measurable error in the output concentration reading Therefore if only a barometer is available and not a vacuum pump only adjust the span setting A rough check of the pressure accuracy can be made by obtaining the current barometric pressure from the local weather station or airport and comparing it to the pressure reading However since these pressures are usually corrected to sea level it may be necessary to correct the reading to local pressure by subtracting 0 027 mm Hg per foot of altitude Do not try to calibrate the pressure transducer unless the pressure is known accurately a 1 Remove the cover 2 Disconnect the tubing from the pressure transducer and connect a vacuum pump known to produce a vacuum less than 1 mm Hg 3 From the Main Menu press to scroll to Service gt press gt to scroll to Pressure Calibration gt and press Ce The Pressure Sensor Cal screen appears Model 42i Low Source Instruction Manual 7 35 Servicing Pressure Transducer Calibration 7 36 Model 42i Low Source Instruction Manual If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt press gt 4 to scroll to Service Mode gt and press The Service Mode screen appears b Press to toggle the Service Mode t
5. e Press to save set to value as actual value Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 75 Operation Alarms Menu Cooler Temperature The Cooler Temperature screen displays the current cooler temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 25 to 1 C If the cooler temperature reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu e Inthe Main Menu choose Alarms gt Cooler Temp Min and Max Cooler Temperature The Minimum Cooler Temperature alarm limit screen is used to change the Limits minimum cooler temperature alarm limit The minimum and maximum cooler temperature screens function the same way e In the Main Menu choose Alarms gt Cooler Temp gt Min or Max e Use and to increment or decrement the numeric value e Press to save set to value as actual value 3 76 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Operation Alarms Menu Converter Temperature The Converter Temperature screen displays the current converter temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 300 to 700 C The actual alarm setpoints should be set for the installed converter If the converter temperature reading goes beyond either the minimum or maximum limit an alarm is activated The word
6. on page D 2 e Block Checksum on page D 3 e Geysitech Commands on page D 3 The following are the communication parameters that are used to configure the serial port of the Series to support Geysitech protocol Number of Data bits 8 Number of Stop bits 1 Parity None Data rate from 1200 115200 Baud 9600 is default Model 427 Low Source Instruction Manual D 1 Geysitech Bayern Hessen Protocol TCP Communication Parameters TCP Communication Parameters Instrument Address Abbreviations Used Basic Command Structure D 2 Model 42i Low Source Instruction Manual iSeries Instruments support the Geysitech TCP protocol over TCP IP The register definition is the same as for the serial interface TCP connection port for Geysitech 9882 The Geysitech instrument address has a value between 0 and 127 and is represented by 3 digit ASCII number with leading zeros or leading spaces if required e g Instrument address of 1 is represented as 001 or lt SP gt lt SP gt 1 The instrument Address is the same as the Instrument ID used for C Link and MODBUS commands This can be set via the front panel The Instrument Address is represented by lt address gt in the examples throughout this document Note Device IDs 128 through 247 are not supported because of limitations imposed by the C Link protocol a The following is a list of abbreviations used in this document lt CR gt is abbreviation for Carriage Re
7. to move the cursor up and down e Press to select a new choice The Other Measurements screen allows the user to select the output signal that is tied to the selected field item The selected item is shown by lt after it Note that at this point pressing indicates that these are proposed changes as opposed to implemented changes To change the selected record format and erase record log file data see Commit Content below e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Select Content gt Select Field gt Other Measurements Use and to move the cursor up and down e Press to select a new choice Model 42i Low Source Instruction Manual 3 37 Operation Instrument Controls Menu 3 38 Analog Inputs Commit Content Model 42i Low Source Instruction Manual The Analog Inputs screen allows the user to select the output signal none or analog inputs 1 8 that is tied to the selected field item The selected item is shown by lt after it Note that at this point pressing indicates that these are proposed changes as opposed to implemented changes To change the selected record format and erase record log file data see Commit Content below e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Select Content gt Select Field gt Analog Inputs Use and to move the cursor up and down e Press to select a new
8. Relay 10 Contact a 11 NC 12 Solenoid Drive Output 1 13 Solenoid Drive Output 2 14 Solenoid Drive Output 3 Thermo Fisher Scientific Model 427 Low Source Instruction Manual 6 19 Troubleshooting Connector Pin Descriptions Table 6 7 Digital Output Board Connector Pin Descriptions continued Connector Reference Pin Signal Label Designator Description 15 solenoid Drive Output 4 16 solenoid Drive Output 5 17 Solenoid Drive Output 6 18 solenoid Drive Output 7 19 solenoid Drive Output 8 20 Relay 1 Contact b 21 Relay 2 Contact b 22 Relay 3 Contact b 23 Relay 4 Contact b 24 Relay 5 Contact b 25 Relay 6 Contact b 26 Relay 7 Contact b ZI Relay 8 Contact b 28 Relay 9 Contact b 29 Relay 10 Contact b 30 24V 31 24V 32 24V 33 24V 34 24V 35 24V 36 24V 37 24V Table 6 8 Input Board Connector Pin Descriptions Connector Reference Pin Signal Label Designator Description PMT IN J1 1 PMT Input 2 Ground INTF BD J2 1 15V 2 Ground 3 15V 6 20 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Troubleshooting Connector Pin Descriptions Table 6 8 Inout Board Connector Pin Descriptions continued Connector Label Reference Designator Pin co co N O on A Signal Description 5V Ground Measurement Frequency Output Amplifier Zero Adjust Voltage SPI Input SPI Clock SPI Board Select Table 6 9 Temperature Control Board Connector Pin Descriptions Connector
9. WARNING The service procedures in this manual are restricted to qualified service representatives a 1 Select the NO NO gt and NO ranges Refer to Range Menu in the Calibration chapter 2 Set the NO BKG and NO BKG calibration factors to 0 0 Refer to Calibration Factors Menu in the Calibration chapter 3 Set the NO COEF NO COEF and NO COEFF to 1 000 4 Set the Averaging Time to 10 seconds Refer to Averaging Time in the Calibration chapter 5 Connect the calibration gas and allow the instrument to sample calibration gas until the reading stabilizes 6 From the Main Menu press to scroll to Service gt press gt to scroll to PMT Voltage Adjustment gt and press e The Set PMT Voltage screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it Thermo Fisher Scientific Servicing Reaction Chamber Cleaning or Removal a At the Main Menu press to scroll to Instrument Controls gt press gt to scroll to Service Mode gt and press a The Service Mode screen appears b Press to toggle the Service Mode to ON c Press gt to return to the Main Menu d Continue the procedure at the beginning of Step 6 to display the Set PMT Voltage screen 7 At the Set PMT Voltage screen use EDE to increment decrement the counts until the instrument displays the calibration gas concentration
10. and to increment or decrement the numeric value e Press to save set to value as actual value The Zero Auto Calibration screen read only allow the user to view the status of the most recent auto background calibration The zero and span auto calibration screens are displayed if the auto calibration option is installed and function the same way e Inthe Main Menu choose Alarms gt Zero or Span Autocal The NO Concentration screen displays the current NO concentration and sets the minimum and maximum alarm limits Acceptable alarm limits range from 0 to 500 000 ppb 0 to 500 ppm and 0 to 750 000 g m 0 to 750 mg m The minimum alarm may be programmed as a floor trigger alarm is triggered when the concentration falls below the minimum value or a ceiling trigger alarm is triggered when the concentration goes above the minimum value If the NO concentration goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu The NO and NO Concentration screens function the same way e In the Main Menu choose Alarms gt NO NO or NO Concentration Thermo Fisher Scientific Operation Alarms Menu Min and Max NO NO and NO The Minimum NO Concentration alarm limit screen is used to change the Concentration Limits minimum NO concentration alarm limit The minimum and maximum NO NOs and NO concentration alarm limit screens functio
11. to scroll to Service Mode gt and press 4a The Service Mode screen appears b Press to toggle the Service Mode to ON Thermo Fisher Scientific Servicing Pressure Transducer Assembly Replacement c Press gt to return to the Main Menu d Continue the procedure at Step 2 3 At the Analog Output Cal screen press to scroll to the channel Voltage Channel 1 6 corresponding to the rear panel terminal pin where the meter is connected then press e The Analog Output Cal screen appears 4 With the cursor at Calibrate Zero press The Analog Output Cal line displays Zero 5 Use e until the meter reads OV then press to save the value 6 Press to return to the Analog Output Cal screen The Analog Output Cal screen appears 7 Press to select Calibrate Full Scale The Analog Output Cal Span screen appears 8 Use 4 until the meter reads the value shown in the Set Output To line then press to save the value Pressure Transducer Use the following procedure to replace the pressure transducer assembly Assembly isere 7 18 Re p lacement Equipment Required Pressure transducer assembly Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 33 Servicing Pressure T 7 34 ransducer Assembly Replacement Model 42i Low Source Instruction Manual Philips screwdriver Equipment Damage Some internal components can be damaged by sm
12. 8 Figure 7 5 Lower the Partition Panel Equipment Required Philips screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component 1 Turn instrument OFF and unplug the power cord 2 Ifthe instrument is mounted in a rack remove it from the rack 3 Remove the cover 4 Disconnect the plumbing connections at the rear of the measurement bench Thermo Fisher Scientific Servicing Pump Replacement 5 Disconnect the three connectors that pass through the center of the partition panel 6 Remove two screws from the left side of the case viewed from front 7 Remove one screw from the bottom front of the case 8 Remove one screw from the top front of the partition panel 9 While holding the case securely loosen the captive screw at the rear of the measurement bench and pull the measurement bench from the rear of the case 10 Remove the screw at the top rear of the partition panel securing the top of partition panel to the measurement bench and lower the panel being careful not to put excessive tension on the cables 11 Replace the measurement bench by following previous steps in reverse Pum Re lacement Use the following procedure to replace the pump see Figure 7 6 To 8P P pump 8 rebuild the pump see Pump Rebuilding in the Preventive Maintenance chap
13. ALARM appears in the Run screen and in the Main Menu e Inthe Main Menu choose Alarms gt Converter Temp Min and Max Converter The Minimum Converter Temperature alarm limit screen is used to change Temperature Limits the minimum converter temperature alarm limit The minimum and maximum converter temperature screens function the same way Note The ozonator will not turn on if the converter is below alarm limit e Inthe Main Menu choose Alarms gt Converter Temp gt Min or Max e Use and to increment or decrement the numeric value e Press to save set to value as actual value Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 77 Operation Alarms Menu Pressure The Pressure screen displays the current reaction chamber pressure reading and sets the minimum and maximum alarm limits Acceptable alarm limits range from 100 to 200 mmHg If the pressure reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu e Inthe Main Menu choose Alarms gt Pressure Min and Max Pressure Limits The Minimum Pressure alarm limit screen is used to change the minimum pressure alarm limit The minimum and maximum pressure screens function the same way e Inthe Main Menu choose Alarms gt Pressure gt Min or Max e Use and to increment or decrement the numeric value e Press to save set to
14. BNC Connector to Input Board To PMT HVPs Figure 7 8 PMT Cooler and Reaction Chamber 5 Disconnect plumbing connections from the reaction chamber 6 Disconnect the PMT cooler cables from the PMT high voltage power supply the input board and the measurement interface board Remove all tie wraps securing the cables 7 14 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Photomultiplier Tube Replacement Thermo Fisher Scientific Servicing Photomultiplier Tube Replacement 7 Loosen four captive screws holding cooler to floor plate and remove the cooler assembly with the reaction chamber Note If only the cooler is being replaced remove the PMT and reaction chamber from the old cooler and install them on the new cooler Fasten knurled fittings on reaction chamber finger tight Make sure that the heat shrink covered tubing between the reaction chamber and the converter is light tight at the connections a 8 Install new cooler by following previous steps in reverse 9 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Use the following procedure to replace the PMT tube Equipment Required Photomultiplier tube and PMT base Nut driver 5 16 inch Flat blade screwdriver Philips screwdriver small Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wr
15. LD7 LCD Signal LD3 LCD Signal LCD Bias Voltage 5V Ground Ground LCD_ONOFF LCD Signal Keypad Row 2 Input Keypad Row 1 Input Keypad Row 4 Input Keypad Row 3 Input Keypad Col 2 Select Keypad Col 1 Select Keypad Col 4 Select Keypad Col 3 Select Ground Ground Ground Thermo Fisher Scientific Troubleshooting Connector Pin Descriptions Table 6 5 Front Panel Board Connector Pin Diagram continued Connector Reference Pin Signal Label Designator Description 32 Ground 33 24V 34 24V LFLM_5V LCD Signal LLP_5V LCD Signal LCLK_5V LCD Signal LCD_ONOFF_5V LCD Signal 5V LCD DATA J2 _ Ground LCD Bias Voltage LDO_5V LCD Signal LD1_5V LCD Signal LD2_5V LCD Signal 11 LD3_5V LCD Signal 12 LD4_5V LCD Signal 13 LD5_5V LCD Signal 14 LD6_5V LCD Signal 15 LD7_5V LCD Signal 16 Ground co O N O o A O N KEYBOARD J3 Keypad Row 1 Input Keypad Row 2 Input Keypad Row 3 Input Keypad Row 4 Input Keypad Col 1 Select Keypad Col 2 Select Keypad Col 3 Select CO N ODO o A WD N Keypad Col 4 Select LCD Backlight Voltage 1 NC NC LCD Backlight Voltage 2 LCD BACKLIGHT J4 gt jw N Thermo Fisher Scientific Model 427 Low Source Instruction Manual 6 17 Troubleshooting Connector Pin Descriptions Table 6 6 O Expansion Board Optional Connector Pin Descriptions Connector Reference Pin Signal Label Designator Descriptio
16. Receive alarm trig conc no 1 set alarm trig conc no value set alarm trig conc no2 value set alarm trig conc nox value These commands set the NO NO 5 and NO concentrations alarm minimum value where value is set to either floor or ceiling according to Table B 3 The example below sets the NO concentration minimum alarm trigger to ceiling Send set alarm trig conc no 1 Receive set alarm trig conc no 1 ok Table B 3 Alarm Trigger Values Value Alarm Trigger 0 Floor 1 Ceiling Model 427 Low Source Instruction Manual B 15 C Link Protocol Commands Diagnostics Diagnostics Datalogging B 16 Model 427 Low Source Instruction Manual diag volt mb This command reports the diagnostic voltage measurements on the motherboard The sequence of voltages is Positive 24 positive 15 positive 5 positive 3 3 and negative 3 3 Each voltage value is separated by a space Send diag volt mb Receive diag volt mb 24 1 14 9 4 9 3 2 3 2 diag volt mib This command reports the diagnostic voltage measurements on the measurement interface board The sequence of voltages is Positive 24 positive 15 negative 15 positive 5 positive 3 3 and positive 15 Each voltage value is separated by a space Send diag volt mib Receive diag volt mib 24 1 14 9 14 9 4 9 3 2 14 9 diag volt iob This command reports the diagnostic voltage measurements on the I O expansion board The sequence of voltages is Positive 24 positive 5 positive 3 3
17. This command responds with feature not enabled if the I O expansion board is not detected Send analog iout range 4 Receive analog iout range 4 2 set analog iout range channel range This command sets analog current output channel to the channel range where channel is between 1 and 6 inclusive and range is set according to Table B 10 The example below sets current output channel 4 to the 0 20 mA range This command responds with feature not enabled if the I O expansion board is not detected Model 427 Low Source Instruction Manual B 39 C Link Protocol Commands I O Configuration B 40 Model 42i Low Source Instruction Manual Send set analog iout range 4 1 Receive set analog iout range 4 1 ok Table B 10 Analog Current Output Range Values Range Output Range 1 0 20 mA 2 4 20 mA 0 cannot be set to this but may report Undefined analog vin channel This command retrieves the analog voltage input channel data both the calculated value and the actual voltage In the example below the calculated value of channel 1 is 75 325 degrees F volts are 2 796 This command responds with feature not enabled if the I O expansion board is not detected Send analog vin 1 Receive analog vin 1 75 325 2 796 analog vout range channel This command reports the analog voltage output channel range where channel is between 1 and 6 inclusive according to Table B 11 Send analog vout range 2 Receive analog
18. Use the following procedure to calibrate the NO channel to the NO calibration gas i Press to return to the Calibration menu and choose Calibrate Lo RNG NO Model 427 Low Source Instruction Manual 4 13 Calibration Calibration in Dual Range and Auto Range Mode 4 14 Calibrate Low NO Model 42i Low Source Instruction Manual 2 Verify that the low NO calibration gas concentration is the same as the low NO calibration gas concentration plus any known NO impurity The Lo NO field displays the current NO concentration The Lo NO Span Conc field is where you enter the low NO calibration gas concentration Use to move the cursor left and right and use C to increment and decrement the numeric character at the cursor 3 Press to calculate and save the new low NO coefficient based on the entered span concentration 4 Press gt to return to the Run screen Use the following procedure to calibrate the NO channel to the NO calibration gas 1 Adjust the O3 generator in the GPT system to generate sufficient O3 to produce a decrease in the low NO concentration equivalent to about 80 of the URL of the low NO range The decrease must not exceed 90 of the low NO concentration determined in the Calibrate Low NO procedure 2 From the Main Menu choose Calibration gt Calibrate LO RNG NO The Lo NO field displays the current NO concentration The Lo NO Span Conc field is where you
19. choose Range gt Set Custom Ranges gt Custom range 1 2 or 3 e Use and to increment or decrement the numeric value e Press to save the new range t CHANGE VALUE SAVE The averaging time defines a time period 10 to 300 seconds over which NO NO and NO measurements are averaged The average concentration of the NO NO and NO readings are calculated for that time period The front panel display and analog outputs are updated every 10 seconds with the calculated averages An averaging time of 10 seconds for example means that the average concentration of the last 10 seconds will be output at each update An averaging time of 300 seconds means that the moving average concentration of the last 300 seconds will be output at each 10 second update Therefore the lower the averaging time the faster the front panel display and analog outputs respond to concentration changes Longer averaging times are typically used to smooth output data The Averaging Time screen for the single range mode is shown below In the dual and auto range modes an averaging time menu is displayed before the averaging time screen This additional menu is needed because dual and auto range modes have two averaging times high and low The averaging time screens function the same way in the single dual and auto range modes The following averaging times are available 10 20 30 60 90 120 180 240 and 300 seconds Additional averaging
20. high range nox host name instr name instrument id internal temp isc iscreen layout ack le left list din list dout list Irec list sp list srec list stream list var aout list var din list var dout low avg time low no low no coef low no gas low no2 low no2 coef low no2 gas low nox low nox coef low nox gas low range no low range no2 low range nox lr Irec Table B 1 C Link Protocol Commands Description Reports selects current NO high range Reports sets host name string Reports instrument name Reports sets instrument id Reports current internal instrument temperature Retrieves framebuffer data used for the display Disables stale layout layout changed indicator Simulates pressing left pushbutton Lists current selection for digital input Lists current selection for digital output Lists current selection Irec logging data Lists current selection in the scratchpad list Lists current selection srec logging data Lists current selection streaming data output Reports list of analog output index numbers and variables Reports list of digital input index numbers and variables Reports list of digital output index numbers and variables Reports sets low averaging time Reports NO concentration calculated with low range coefficients Reports sets low range NO coefficient Reports sets low range NO span gas concentration Reports NO concentration calculated with low range coeff
21. lt SP gt T T Tt Address First Concentration E format 25 78 Address 1 5681 00 lt SP gt 03 lt SP gt 04 lt SP gt 0000000000 lt SP gt 003 lt SP gt 1175 01 lt SP gt 03 lt SP gt 04 lt SP i ii T Second Concentration 5 681 Address 2 Third Concentration 11 75 0000000000 lt SP gt lt CR gt The attached concentrations are in the selected gas units The measurements that are attached to the response if not valid in a particular mode then a value of 0 0 will be reported Measurements reported in The following measurements reported in response to DA command are for response to DA command the Model 422 Low Source Single Range Mode The 3 measurements reported in single range mode include e NO NO e NO Dual Auto Range Mode The 6 measurements reported in dual or auto range modes include e low NO e low NO e low NO e high NO e high NO e high NO D 6 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Geysitech Bayern Hessen Protocol Geysitech Commands Operating and Error See Table D 1 for operating status and Table D 2 for error status for the Status Model 427 Low Source Table D 1 Operating Status for Model 427 Low Source o e e am hb bhbleekh wone olo ojo wo o o wss il Smene fo ofa fo fa fo fo fv maneres fo ofa fo a o fo mos fo fo fo fof af fo fo mson fo ofa fo r fo o fo ex nese o oo 1 a oo fo itr oi ofa fof fo fo fo fo moa fo fs _fo fo fa fo ojo
22. on the measurement interface board and enter the temperature reading a A 1 C change corresponds to a 5 change in resistance thus this alternative procedure can be quite accurate as a check however it clearly is not NIST traceable a 3 From the Main Menu press to scroll to Service gt press gt to scroll to Temperature Calibration gt and press The Calibrate Ambient Temperature screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt press gt to scroll to Service Mode gt and press The Service Mode screen appears b Press to toggle the Service Mode to ON c Press gt to return to the Main Menu d Continue the procedure at the beginning of Step 3 to access the Calibrate Ambient Temperature screen 4 Wait at least 10 seconds for the ambient reading to stabilize use EJEA and e to enter the known temperature and press l to save tne temperature value Thermo Fisher Scientific Fuse Replacement Scrubber Replacement Thermo Fisher Scientific A Servicing Fuse Replacement 5 Install the cover Use the following procedure to replace the fuse Equipment Required Replacement fuses 250VAC 4 Amp SlowBlow for 1OOVAC and 110VAC models 250VAC 2 Amp SlowBlow for 220 240VAC models 1 Turn instrument OFF and unp
23. read only displays the ozone flow rate An internal flow sensor measures the ozone flow For more information see Chapter 1 Introduction e Inthe Main Menu choose Diagnostics gt Flow Model 427 Low Source Instruction Manual Thermo Fisher Scientific Analog Input Readings Analog Input Voltages Thermo Fisher Scientific Operation Diagnostics Menu The Analog Input Readings screen read only displays the 8 current user scaled analog readings if the I O expansion board option is installed e Inthe Main Menu choose Diagnostics gt Analog Input Readings The Analog Input Voltages screen read only displays the 8 raw analog voltage readings if the I O expansion board option is installed e Inthe Main Menu choose Diagnostics gt Analog Input Voltages Model 427 Low Source Instruction Manual 3 69 Operation Diagnostics Menu Digital Inputs The Digital Inputs screen read only displays the state of the 16 digital inputs e Inthe Main Menu choose Diagnostics gt Digital Inputs Relay States The Relay States screen displays the state of the 10 digital outputs and allows toggling of the state to either on 1 or off 0 The relays are restored to their original states upon exiting this screen e Inthe Main Menu choose Diagnostics gt Relay States Test Analog Outputs The Test Analog Outputs menu contains a number of digital to analog converter DAC calibration items Channel
24. to streaming data string according to Table B 5 The example below attaches a time stamp to streaming data Send set stream time O Receive set stream time O ok Table B 5 Stream Time Values Value Stream Time 0 Attaches time stamp to streaming data string 1 Disables time stamp to streaming data string set cal no coef set cal no2 coef set cal nox coef set cal high no coef set cal high no2 coef set cal high nox coef set cal low no coef set cal low no2 coef set cal low nox coef These commands will auto calibrate the NO NO3 and NO coefficients based on the NO NO gt and NO span gas concentrations The high and low commands are only available in dual and auto range mode If the mode Model 42i Low Source Instruction Manual B 23 C Link Protocol Commands Calibration B 24 Model 42i Low Source Instruction Manual e e e lt 4 3 e 39 is incorrect the instrument responds with can t wrong settings The example below shows a successful auto calibration of the low NO coefficient Send set cal low no coef Receive set cal low no coef ok set cal no bkg set cal nox bkg These commands will auto calibrate the NO and NO backgrounds If the instrument is set to manual NO mode the response to set cal no bkg will be can t wrong settings The example below shows a successful auto calibration of the NO background Send set cal no bkg Receive set cal no bkg ok no coef no2 coef no
25. two different span levels as opposed to a single span level in the standard mode generating a tailored multi point calibration curve stored in the analyzer s memory This feature may be used e When widely different gas levels are being monitored such as a factor of 10 or greater apart e If precision and span levels are being introduced using separate tanks e If more than one multi component cylinder is being used to calibrate the instrument Properly designed chemiluminescence analyzers are inherently linear over a wide dynamic range and under normal USEPA compliance situations this feature is not required Dual calibration may be used for span levels less than a factor of 10 apart however if this is done to correct for a significant non linearity it may mask the problems causing the effect such as bad calibration cylinder leaks in sampling lines or low ozonator output Use the following procedures to calibrate the analyzer in dual or auto range mode Use the following procedure to set NO and NO background readings to zero Both the Set NO Background and Set NO Background screens operate the same way and the following procedure also applies to the Set NO background screen For detailed information about the menu parameters and the icons used in these procedures see the Operation chapter 1 Follow the Pre Calibration procedure described previously in this chapter 2 Introduce zero air to the SAMP
26. 005 ppm RMS 60 second averaging time Lower detectable limit 0 01 ppm 60 second averaging time Zero drift 24 hour 0 005 ppm Span drift 24 hour 1 full scale Response time 15 sec 10 second averaging time NO NO mode 85 sec 60 second averaging time 305 sec 300 second averaging time Thermo Fisher Scientific A i Low Source Instruction Manual 1 3 Introduction specifications 1 4 A i Low Source Instruction Manual Response time NO mode Linearity sample flow rate Operating temperature Power requirements Physical dimensions Weight Analog outputs Digital outputs Digital inputs Serial Ports Ethernet connection 15 sec 10 second averaging time 65 sec 60 second averaging time 305 sec 300 second averaging time 1 full scale 25 cc min measured at atmospheric pressure 15 35 C may be safely operated over the range of 0 45 ei 100 VAC 50 60 Hz 115 VAC 50 60 Hz 220 240 VAC 50 60 Hz 300 watts 16 75 W X 8 62 H X 23 D Approximately 55 Ibs 6 voltage outputs 0 100 mV 1 V 5 V 10 V User selectable 5 of full scale over under range 12 bit resolution user selectable for measurement input 1 power fail relay Form C 10 digital relays Form A user selectable alarm output relay logic 100 mA 200 VDC 16 digital inputs user select programmable TTL level pulled high 1 RS 232 or RS 485 with two connectors baud rate 1200 115200 data bits parity and stop bit
27. 3 57 Troubleshooting General Guide siossiienirerecssnnarin iia 6 2 Troubleshooting Alarm Messages ss sssesseseeesesesessssesssesseressesssressressersses 6 3 Motherboard Connector Pin Descriptions esssssssssssserssseresssrerssrresseresses 6 8 Measurement Interface Board Connector Pin Descriptions 06 6 13 Front Panel Board Connector Pin Diagram sseseesssesessseressreseeressressresses 6 16 I O Expansion Board Optional Connector Pin Descriptions 6 18 Digital Output Board Connector Pin Descriptions ssessesesesesreseresseeese 6 19 Input Board Connector Pin Descriptions ssssssssessssesesseressssrrssrrssseresses 6 20 Temperature Control Board Connector Pin Descriptions ssssessesessee 6 21 Model 42i Low Source Replacement Parts 0 eieeeeseceeeseeeeeseeeeeseeeeeeenees 7 5 M odel42i Low Source Caesars tes ctscslss ares niina E naan NEE 7 6 Analog Output Channels and Rear Panel Pin Connections 7 31 RS 232 DB Connector Pin Configurations 10 0 0 ceeceeseeeesseeeeseeeeeeeeeees 8 12 RS 485 DB Connector Pin Configuration ceeseesseeesseeeeseeeeeneeeeees 8 12 Mounin OJolato herent rete erry een nares rarer rr kere ener re 9 4 C like Protocol Gonmimand s esssyct tee tncscrssnsten a teeters inate B 3 Averan VANES ieaie en E e matalonsaslduadice qaeneoteasueareeaabieeic B 9 Abo Tae eer N alie ooer E ee errr eee B 15 Record Output Fonna tS scene r sceussied eset cess EE acesste
28. 42 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu e Inthe Main Menu choose Instrument Controls gt Communication Settings gt Instrument ID e Use t and to increment or decrement the ID value e Press to save the new instrument ID Communication Protocol The Communication Protocol screen is used to change the instrument communication protocol for serial communications This does not affect communications over Ethernet because the protocols are processed simultaneously on different ports In the Main Menu choose Instrument Controls gt Communication Settings gt Communication Protocol e Use and to scroll through a list of choices e Press to save the new protocol Streaming Data Configuration The Streaming Data Configuration menu is used to allow for configuration of the 18 streaming data output items streaming interval current data format and current time The Choose Stream Data submenu displays a list Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 43 Operation Instrument Controls Menu 3 44 Streaming Data Interval Model 42i Low Source Instruction Manual of the analog signal group choices to choose from Choices are Concentrations Other Measurements and Analog Inputs if the I O expansion board option is installed Note Add Labels and Prepend Timestamp are toggle items that change between yes or no whe
29. ANY INSTALLATION MAINTENANCE REPAIR SERVICE RELOCATION OR ALTERATION TO OR OF OR OTHER TAMPERING WITH THE PRODUCTS PERFORMED BY ANY PERSON OR ENTITY OTHER THAN SELLER WITHOUT SELLER S PRIOR WRITTEN APPROVAL OR ANY USE OF REPLACEMENT PARTS NOT SUPPLIED BY SELLER SHALL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED PRODUCTS THE OBLIGATIONS CREATED BY THIS WARRANTY STATEMENT TO REPAIR OR REPLACE A DEFECTIVE PRODUCT SHALL BE THE SOLE REMEDY OF BUYER IN THE EVENT OF A DEFECTIVE PRODUCT EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY STATEMENT SELLER DISCLAIMS ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED ORAL OR WRITTEN WITH RESPECT TO THE PRODUCTS INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE SELLER DOES NOT WARRANT THAT THE PRODUCTS ARE ERROR FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT Thermo Fisher Scientific Thermo Fisher Scientific Appendix B C Link Protocol Commands This appendix provides a description of the C Link protocol commands that can be used to remotely control a Model 427 Low Source analyzer using a host device such as a PC or a datalogger C Link protocol may be used over RS 232 RS 485 or Ethernet C Link functions can be accessed over Ethernet using TCP IP port 9880 e Instrument Identification Number on page B 2 describes the C Link command format e Commands on page B 2 lists all the 427 Low Sourc
30. Controls gt Auto Manual Mode e Use t and to scroll through a list of choices Model 42i Low Source Instruction Manual 3 31 Operation Instrument Controls Menu e Press to save the new mode state Datalogging Settings The Datalogging Settings menu deals with datalogging e Inthe Main Menu choose Instrument Controls gt Datalogging Settings Select SREC LREC The Select SREC LREC is used to select short record or long record format for other operations in this menu e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Select SREC LREC e Use and to scroll through a list of choices e Press to set record format 3 32 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu View Logged Data The View Logged Data screen is used to select the start point to view the logged data by number of records or date and time e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Select SREC or LREC gt View Logged Data e Use t and to toggle between number of records or date and time e Press to accept Number of Records The Number of Records screen is used to select the starting point to display the number of records back to view e Use t and to increment or decrement the numeric value e Press to set the starting record and continue to the record display screen Thermo Fisher
31. Dual Range Mode 3 10 Analog Output in Auto Range Mode eeeeeeeseeeeeneeeeneeeeees 3 12 Pin Out of Rear Panel Connector in Auto Range Mode 3 13 NP SVS iit tg ete tate ices suds gee e cha edeiads NE 4 4 Inspecting and Replacing the Capillaries oe eeeeeeeeee 5 3 Rebtitdine the PUND aa eevee E eens 5 6 Board Level Connection Diagram Common Electronics 6 6 Board Level Connection Diagram Measurement System 6 7 Properly Grounded Antistatic Wrist Strap oo eeeeeeeseeeeeseeeeees 7 4 GO Mi pore Ht Layout esei a 7 7 Remove the Measurement Bench Screws ccccssseceeeeetteeeees 7 8 Slide Out the Measurement Bench eececccceeeetteeeeeeeteeeeees 7 9 Lower the Partition Panel aeieea nr canes 7 10 Re plac rie te POUP estass ES 7 12 Replace a Taner a N E 7 13 PMT Cooler and Reaction Chamber ssssssessssesessesssesrssseresse 7 14 Replaciie thie PMT siaaa 7 16 Replaemesthe T MT EY PS aen a tee TAs Cleaning or Removing the Reaction Chamber ee see 7 20 NO to NO Moly Converter Assembly 0 ccccceeeesseeeeeesteees 7 22 Replacing the Solenoid Valve sessiescocassesdagcevaneresniabeseriveueteendes 7 24 Replacing the Ozonator Assembly ceeeeeesseeeseeeeeseeeeeeeees 7 25 Replacing the Input Board lt a cusescermencaceauceesavendnensdemnbecuerteves 7 27 Replacing the DC Power Supply siescaninsccisnesiceavene 7 30 Rear Panel Analog Voltage Output Pins 0 eee eeeeeeeeeeeee 7 31 Replacin
32. Instrument Controls gt Datalogging Settings gt Configure Datalogging gt Data Treatment e Use and to scroll through a list of choices e Press to set the data type ts CHANGE VALUE Communication Settings The communication Settings menu is used with communications control and configuration Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 41 Operation Instrument Controls Menu e Inthe Main Menu choose Instrument Controls gt Communication Settings Baud Rate The Baud Rate screen is used to set the RS 232 RS 485 interface baud rate Baud rates of 1200 2400 4800 and 9600 19200 38400 57600 and 115200 are available e Inthe Main Menu choose Instrument Controls gt Communication Settings gt Baud Rate e Use t and to scroll through a list of choices e Press to save the new baud rate Instrument ID The Instrument ID screen allows the operator to edit the instrument ID The ID is used to identify the instrument when using the C Link or MODBUS protocols to control the instrument or collect data It may be necessary to edit the ID number if two or more of the same instrument are connected to one computer over the serial port Valid Instrument ID numbers are from 0 to 127 The Model 427 Low Source has a default Instrument ID of 42 For more information about the Instrument ID see Appendix B C Link Protocol Commands or Appendix C MODBUS Protocol 3
33. Label INTERFACE AC INPUT BENCH CONVERTER CONV TC SS TEMP Reference Designator J J2 J3 J4 J5 J6 Pin A Cw N oOo oo Aa O N gt N Signal Description Bench Temperature Input Ground 15V Converter Heater On Off Converter Temperature Input 15V_PWR AC HOT AC NEUT Bench Heater AC Output Bench Heater AC Return Ground Bench Thermistor Ground Converter Heater AC Output Converter Heater AC Return Converter Thermocouple TC Converter Thermocouple C SS Temperature Range Jumper A SS Temperature Range Jumper B Model 427 Low Source Instruction Manual 6 21 Troubleshooting Service Locations Service Locations For additional assistance service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com adi 1 866 282 0430 Toll Free 1 508 520 0430 International 6 22 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Chapter 7 Servicing This chapter explains how to replace the Model 427 Low Source subassemblies It assumes that a subassembly has been identified as defective and needs to be replaced For fault location information refer to the Preventive Maintenance chapter and the Troubleshooting chapter in this manual The service mode in the Operation chapter also includes parame
34. Model 427 Low Source For detailed information about the menu parameters and the icons used in these procedures see the Operation chapter Note The calibration and calibration check duration times should be long enough to account for the transition purge process when switching from sample to zero and from zero to span This transition time is the time required to purge the existing air Depending on the plumbing configuration and the instrument data from approximately the first minute of a zero calibration or check should be disregarded because of residual sample air Also data from approximately the first minute of a span calibration or check should be disregarded because the span is mixing with the residual zero air 1 Allow the instrument to warm up and stabilize 2 Be sure the ozonator is ON If the ozonator is not ON a Press to display the Main Menu then choose Instrument Controls gt Ozonator b Press to toggle the ozonator ON c Press to return to the Run screen Model 427 Low Source Instruction Manual 4 1 Calibration Calibration 4 2 Calibration Model 427 Low Source Instruction Manual 3 Be sure the instrument is in the auto mode that is NO NO gt and NO measurements are being displayed on the front panel display If the instrument is not in auto mode a Press to display the Main Menu then choose Instrument Controls gt Auto Manual Mode b Select NO NO and
35. NO NO and NO when operating in dual or auto range mode The example below shows that the NO concentration is 62 7 ppb Send no Receive no 6270E 2 ppb conv temp This command reports the current NO converter temperature The example below reports that the current converter temperature is 625 C Send conv temp Receive conv temp 625 deg C cooler temp This command reports the PMT cooler temperature The example below reports that the PMT cooler temperature is 2 8 C Send pmt temp Receive pmt temp 2 8 deg C internal temp This command reports the current internal instrument temperature The example below shows that the internal temperature is 28 6 C Send internal temp Receive internal temp 28 6 deg C actual 28 6 pmt temp This command reports the PMT cooler temperature The example below reports that the PMT cooler temperature is 2 8 C Send pmt temp Receive pmt temp 2 8 deg C Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Measurements pmt voltage This command reports the current PMT voltage The example below reports that the current PMT voltage is 750 volts Send pmt voltage Receive pmt voltage 750 pres This command reports the current reaction chamber pressure The example below shows that the actual reaction chamber pressure is 232 5 mmHg Send pres Receive pres 232 5 mm Hg react temp This command reports the current reaction chamber temperat
36. Remove the instrument from the shipping container and set it on a table or bench that allows easy access to both the front and rear 2 Remove the cover to expose the internal components Model 427 Low Source Instruction Manual 2 1 Installation Unpacking and Inspection 3 Remove the packing material E ia Li Hi o Ig Bil Remove Packing 2 pieces Remove Packing E 2 pieces Units without Optional 0 Board Units with Optional I O Board Figure 2 1 Remove the Packing Material 4 Remove the three shipping screws Figure 2 2 shipping Screws 3 Figure 2 2 Remove the Shipping Screws 5 Check for possible damage during shipment 6 Check that all connectors and circuit boards are firmly attached 2 2 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Installation Setup Procedure 7 Re install the cover Setup Procedure Use the following procedure to setup the instrument 1 Connect the sample line to the SAMPLE bulkhead on the rear panel Figure 2 3 Ensure that the sample line is not contaminated by dirty wet or incompatible materials All tubing should be constructed of FEP Teflon 316 stainless steel borosilicate glass or similar tubing with an OD of 1 4 inch and a minimum ID of 1 8 inch The length of the tubing should be less than 10 feet Note Gas must be delivered to the instrument at atmospheric pressure It may be necessary to use an atmospheric bypass plu
37. SPAN CONC line of the display is where you enter the NO calibration gas concentration Use and gt to move the cursor left and right and use Jand to increment and decrement each digit Press to calibrate the NO channel to the NO calibration gas l 9 Press to return to the Run screen The exact NO concentration is calculated from NO i Fno X INO Joop NO gt Tog Fno Fo Fp Where NO our diluted NO concentration at the output manifold ppm NO gt mp concentration of NO impurity in the standard NO cylinder ppm 4 8 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Preparing NO NOx and NO2 Calibration Curves Thermo Fisher Scientific Calibration Calibration The NO recorder response will equal Recorder Response scale Doi x 100 Zxo Where URL Nominal upper range limit of the NO channel ppm Record the NO concentration and the analyzer s NO response Use the following procedure to prepare the NO NO and NO calibration Curves 1 Generate several additional NO and NO concentrations by decreasing FNo or increasing Fp 2 For each concentration generated calculate the exact NO and NO concentrations using the above equations for NO oyrz and NO lour 3 Record the NO and NO responses 4 Plot the analyzer responses versus the respective calculated NO and NO concentrations and draw or calculate the respective calibration curves Fo
38. Scientific Model 42i Low Source Instruction Manual 3 33 Operation Instrument Controls Menu The Record Display screen read only displays the selected records e Use jand to view all the items in the record e Use and to view records at different times Date and Time The Date and Time screen is used to set a start date and time for which to view logged data For example if 20 JUN 2005 10 00 is entered then the first logged data record that is displayed is the first record after this time If set to one minute logging this would be at 20 JUN 2005 10 01 e Use and to increment or decrement the selected field e Use to advance to next field e Press to set the date and time of the first record to be displayed and continue to the record display screen 3 34 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu The Record Display screen read only displays the selected records e Use and gt to view all the items in the record e Use and to view records at different times Erase Log The Erase Log is used to erase all saved data for the selected record type not all short records and long records e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Erase Log e Press to erase all data e Press gt to confirm erasure Thermo Fisher Scientific Model 427 Low Source Ins
39. Source Instruction Manual The Gas Units screen defines how the NO NO5 and NO concentration readings are expressed Gas units of parts per billion ppb parts per million ppm micrograms per cubic meter ug m or milligrams per cubic meter mg m are available The ug m and mg m gas concentration modes are calculated using a standard pressure of 760 mmHg and a standard temperature of 20 C When switching the selected units from ppb or ppm to g m or mg m the analog ranges all default to the highest range in that mode For example when switching from mg m to ppm all the ranges default to 100 ppm Therefore whenever you change units you should also check the range settings e Inthe Main Menu choose Range gt Gas Units e Use t and to scroll through a list of choices e Press to save the new units Note If the units change from ppb ppm to ug m mg m or vice versa the instrument should be recalculated particularly if the user s standard temperature is different from 20 C A display warning will appear that ranges will be defaulted and calibration parameters reset ote CHAHGE VALUE SAVE The NO NO and NO Ranges define the concentration range of the analog outputs For example an NO range of 0 200 ppb restricts the NO analog output to concentrations between 0 and 200 ppb The display shows the current NO NO or NO range The next line of the display is used to change the range Th
40. Source Instruction Manual 7 31 Servicing Analog Output Adjustment 7 32 Analog Output Adjustment Model 42i Low Source Instruction Manual The Set Analog Outputs screen appears Press t to set the output to full scale The Output Set To field displays Full Scale Check that the meter is displaying the full scale value If the meter reading differs by more than one percent the analog outputs should be adjusted Refer to the Analog Output Adjustment procedure that follows Press amp to set the output to zero The Output Set To field displays Zero Check that the meter is displaying a zero value If the meter reading differs by more than one percent the analog outputs should be adjusted Refer to the Analog Output Adjustment procedure that follows Use the following procedure to adjust the analog voltage outputs if a meter reading in the Analog Output Testing procedure differed by more than one percent l Connect a meter to the channel to be adjusted Figure 7 17 shows the analog output pins and Table 7 3 identifies the associated channels From the Main Menu press to scroll to Service gt press gt to scroll to Analog Output Calibration gt and press Ce The Analog Output Cal screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt press gt
41. Source Instruction Manual 8 1 System Description NO2 to NO Converter e Dry air capillary e Ammonia scrubber Silica Reaction Converter Scrubber Chamber PMT Assembly Flow switch Pump Measurement _ Interface Board I O Expansion Power Supply Board Optional Ozonator Transformer Solenoid Motherboard Digital Output Board Figure 8 1 Hardware Components NO to NO Converter The NO to NO converter heats molybdenum to approximately 325 C EPA designated or stainless steel to 625 C in order to convert and detect NO3 The converter consists of an insulated housing heater replaceable cartridge and a type K thermocouple sensor Mode Solenoid The mode solenoid valve switches analyzer operation between the NO mode and NO mode It routes the ambient air sample either through the reaction chamber NO mode or through the NO to NO converter and then to the reaction chamber NO mode Reaction Chamber The reaction chamber is where the sample reacts with ozone and produces excited NO that gives off a photon of energy when it decays 8 2 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Optical Filter Pressure Transducer Ozonator Ozonator Flow Switch Photomultiplier Tube Photomultiplier Tube Cooler Pump Sample Capillary Thermo Fisher Scientific System Description Ozonator The reaction chamber is heated and controlled to approximately 50 C in order to ensure the gre
42. State gt Non Alarm e Use and to scroll through a list of choices e Press to save the new selection for the relay 3 52 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Digital Input Settings Thermo Fisher Scientific Logic State Operation Instrument Controls Menu The Digital Input Settings menu displays a list of the 16 digital inputs available and allows the user to select the logic state and instrument parameter for the relay selected Note The digital inputs must be asserted for at least one second for the action to be activated e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Digital Input Settings The Logic State screen is used to change the I O relay to either normally open or normally closed The default state is open which indicates that a relay connected between the digital input pin and ground is normally open and closes to trigger the digital input action If nothing is connected to the digital input pin the state should be left at open to prevent the action from being triggered e Press to toggle and set the logic state open or closed Model 427 Low Source Instruction Manual 3 53 Operation Instrument Controls Menu 3 54 Instrument Action Analog Output Configuration Model 42i Low Source Instruction Manual The Instrument Action screen allows the user to select the instrument state that is tied to the selected digital inp
43. This section describes the various function codes that are supported by the Model 427 Low Source Read Coils Inputs reads the status of the digital outputs relays in the instrument Issuing either of these function codes will generate the same response These requests specify the starting address i e the address of the first output specified and the number of outputs The outputs are addressed starting at zero Therefore outputs numbered 1 16 are addressed as 0 15 42i Low Source Instruction Manual C 3 MODBUS Protocol Function Codes C 4 A i Low Source Instruction Manual The outputs in the response message are packed as one per bit of the data field Status is indicated as 1 Active on and 0 Inactive off The LSB of the first data byte contains the output addressed in the query The other outputs follow toward the high order end of this byte and from low order to high order in subsequent bytes If the returned output quantity is not a multiple of eight the remaining bits in the final data byte will be padded with zeros toward the high order end of the byte The Byte Count field specifies the quantity of complete bytes of data Note The values reported may not reflect the state of the actual relays in the instrument as the user may program these outputs for either active closed or Open a Request Function code 1 Byte 0x01 or 0x02 Starting Address 2 Bytes 0x0000 to maximum allowed by instrument Quantity of o
44. analog currents via a connector located on the rear panel of the instrument It contains local power supplies a DC DC isolator supply a sub processor and analog circuits Eight analog voltage inputs are provided with an input voltage range of OV to 10VDC Six current outputs are provided with a normal operating range of 0 to 20 mA Terminal Block and The terminal block and cable kit provides a convenient way to connect Cable Kits devices to the analyzer The kit breaks out the signals on the rear panel connector to individual numbered terminals Two types of terminal block and cable kits are available One kit is for the DB37 connectors and can be used for either the analog output connector or the relay output connector The other kit is for the DB25 connector and can be used for the optional I O expansion board The parts available in these kits can also be purchased separately Each kit consists of e one six foot cable e one terminal block e one snap track Note Supporting all of the connections on units with the optional I O expansion board requires two DB37 kits one DB25 kit Thermo Fisher Scientific Model 427 Low Source Instruction Manual 9 3 Optional Equipment Mounting Options Mounting Options The analyzer can be installed in the configurations described in Table 9 1 and shown in Figure 9 3 through Figure 9 5 Table 9 1 Mounting Options Mounting Type Description Bench Positioned on bench includes mounting feet a
45. characters in length and defaults to V volts e In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Units e Press to save the new value Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 59 Operation Instrument Controls Menu Decimal Places The Decimal Places screen allows the user to select how many digits are displayed to the right of the decimal from 0 to 6 with a default of 2 e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Decimal Places e Use and to increment or decrement the value e Press to save the new value Number of Table Points The Number of Table Points screen allows the user to select how many points are used in the conversion table The points range from 2 to 10 with a default of 2 e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Table Points Use and to move the cursor up and down e Press to save the new value 3 60 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu Table Point The Table Point submenu allows the user to set up an individual table point e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Poin
46. command sets the instrument id to value where value is a decimal number between 0 and 127 inclusive Note sending this command via RS 232 or RS 485 will require the host to use the new id for subsequent commands Send set instrument id 50 Receive set instrument id 50 ok Thermo Fisher Scientific I O Configuration Thermo Fisher Scientific C Link Protocol Commands I O Configuration mode This command reports what operating mode the instrument is in local service or remote The example below shows that the instrument is in the remote mode Send mode Receive mode remote set mode local set mode remote These commands set the instrument to local or remote mode The example below sets the instrument to the local mode Send set mode local Receive set mode local ok program no This command reports the analyzer s model information and program version number which will be dependant on the current version Send program no Receive program no iSeries 421LS 01 00 01 074 set layout ack This command disables the stale layout layout change indicator that is attached to each response if the layout has changed Send set layout ack Receive set layout ack ok analog iout range channel This command reports the analog current output range setting for channels where channel must be between 1 and 6 inclusive The example below reports current output channel 4 to the 4 20 mA range according to Table B 10
47. current NO concentration alarm minimum value Reports sets current NO concentration alarm minimum value Reports sets current NO concentration alarm maximum value Reports sets NO converter temperature alarm maximum value Reports sets NO converter temperature alarm minimum value Reports sets PMT cooler temperature alarm maximum value Reports sets PMT cooler temperature alarm minimum value Reports sets internal temperature alarm maximum value Reports sets internal temperature alarm minimum value Reports sets pressure alarm maximum value Reports sets pressure alarm minimum value Reports sets current NO concentration alarm warning value Reports sets current NO concentration alarm warning value Reports sets current NO concentration alarm warning value Reports analog current output range per channel Retrieves analog voltage input data per channel Reports analog voltage output range per channel Model 427 Low Source Instruction Manual Page B 35 B 36 B 36 B 36 B 12 B 12 B 13 B 13 B 13 B 13 B 13 B 13 B 13 B 13 B 14 B 14 B 14 B 14 B 14 B 14 B 15 B 15 B 15 B 39 B 40 B 40 B 3 C Link Protocol Commands Commands B 4 Model 427 Low Source Instruction Manual Command avg time baud cal high no coef cal high no2 coef cal high nox coef cal low no coef cal low no2 coef cal low nox coef cal no bkg cal no coef cal no2 coef cal nox bkg cal nox coef cal pres clr Irecs clr
48. custom range 1 2 or 3 The example below reports that custom range 1 is defined to 55 0 ppb Model 427 Low Source Instruction Manual B 29 C Link Protocol Commands Measurement Configuration B 30 Model 42i Low Source Instruction Manual Send custom 1 Receive custom 1 5500E 2 ppb set custom range value set custom 1 value set custom 2 value set custom 3 value set custom 1 range value set custom 2 range value set custom 3 range value These commands are used to set the maximum concentration for any of the three custom ranges 1 2 or 3 to range value where value is a floating point number representing concentration in ppb ppm ug m or mg m The example below sets the custom 1 range to 5550 ppb Send set custom 1 range 5550 Receive set custom 1 range 5550 ok range mode This command reports the current range mode Send range mode Receive range mode single set range mode mode This command sets the current range mode to single dual or auto The example below sets the range mode to single Send set range mode single Receive set range mode single ok gas mode This command reports the current mode of sample zero or span The example below reports that the gas mode is sample Send gas mode Receive gas mode sample set sample set zero set span These commands set the current gas mode to sample zero or span The example below sets the instrument to span mode that is the instrument is samp
49. damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Figure 7 1 If an antistatic wrist strap is not available be sure to touch a grounded metal object before touching any internal components When the instrument is unplugged the chassis is not at earth ground a Handle all printed circuit boards by the edges a Do not point the photomultiplier tube at a light source This can permanently damage the tube Do not remove the LCD panel or frame from the LCD module a The polarizing plate is very fragile handle it carefully a Do not wipe the polarizing plate with a dry cloth it may easily scratch the plate a Do not use alcohol acetone MEK or other Ketone based or aromatic solvents to clean the LCD module use a soft cloth moistened with a naphtha cleaning solvent a Do not place the LCD module near organic solvents or corrosive gases a Do not shake or jolt the LCD module a Figure 7 1 Properly Grounded Antistatic Wrist Strap Thermo Fisher Scientific Firmware Updates Replacement Parts Thermo Fisher Scientific List Servicing Firmware Updates The firmware can be updated by the user in the field via the serial port or over the Ethernet This includes both the main processor firmware and the firmware in all low level processors Refer to the Port manual for the firmware update procedure Table 7 1 li
50. enter the Lo NO calibration gas concentration 3 Set the low NO calibration gas concentration to reflect the sum of the NO concentration generated by GPT and any NO impurity Use gt to move the cursor left and right and use C to increment and decrement the numeric character at the cursor 4 Press to calculate and save the new low NO coefficient based on the entered span concentration Thermo Fisher Scientific Calibration Calibration in Dual Range and Auto Range Mode Calibrate High NO Use the following procedure to calibrate the NO channel to the NO calibration gas Calibrate High NO Thermo Fisher Scientific l Z Connect a source of high NO calibration gas of about 80 of the high NO full scale range Allow the analyzer to sample the high NO calibration gas until the NO NO and NO readings have stabilized After the responses have stabilized from the Main Menu choose Calibration gt Calibrate Hi RNG NO The Hi NO field displays the current NO concentration The Hi NO Span Conc field is where you enter the high NO calibration gas concentration Use gt to move the cursor left and right and use to increment and decrement the numeric character at the cursor Press to calculate and save the new high NO coefficient based on the entered span concentration Use the following procedure to calibrate the NOx channel to the NOx calibration gas k Press
51. gt Communication Settings gt Streaming Data Config gt Select Item gt Other Measurements e Use jand to move the cursor up and down Model 427 Low Source Instruction Manual 3 45 Operation Instrument Controls Menu e Press to select a new choice Analog Inputs The Analog Inputs screen allows the user to select the output signal none or analog inputs 1 8 that is tied to the selected streaming data item The selected item is shown by lt after it e Inthe Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config gt Select Item gt Analog Inputs Use jand to move the cursor up and down e Press to select a new choice RS 232 RS 485 Selection The RS 232 RS 485 Selection screen allows the user to choose between the RS 232 or RS 485 specification for serial communication Note Disconnect the serial cable before changing RS 232 and RS 485 selection to prevent damage to the connected equipment a e Inthe Main Menu choose Instrument Controls gt Communication Settings gt RS 232 RS 485 Selection e Press to leave the warning screen and move to next screen 3 46 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu e Use gt to confirm and save the new selection change TCP IP Settings The TCP IP Settings menu is used for defining TCP IP settings e Inthe Main Menu choose
52. hy 4 i EA Fa i 3 iz Fh k o a ual A 1 hd B E ip ii i v n Co on O f i nad f 3 T z AN a Pe T Se a he Measurement Interface Board l j r a Figure 7 22 Replacing the Measurement Interface Board 7 44 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Servicing Front Panel Board Replacement Front Panel Board Use the following procedure to replace the front panel board Figure 7 23 Replacement Equipment Required e Front panel board amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Equipment Damage Some internal components can be damaged by small 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the three ribbon cables and the two wire connector from the front panel board 3 Pop off the board from the two top mounting studs and remove the board by lifting it up and off the slotted bottom support 4 Replace the front panel board by following previous steps in reverse LCD Module Retaining Screw LCD Module Screws 2 Front Panel Board Mounting Studs 2 Ribbon Cables 3 ae Bottom Support Figure 7 23 Replacing the Front Panel Board and the LCD Module Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 45 Servicing LCD Module Replacement 7 46 LCD Module Replacement A A Model 42i Low Source Instruction Manual Use t
53. keys are used to provide shortcuts that allow the user to jump to user selectable menu screens For more information on processing soft keys see Soft Keys below The is used to display the Run screen The Run screen normally displays the NO NO and NO concentrations The is used to display the Main Menu when in the Run screen or back up one level in the menu system For more Information about the Main Menu see Main Menu later in this chapter The is context sensitive that is it provides additional information about the screen that is being displayed Press 2 for a brief explanation about the Current screen or menu Help messages are displayed using lower case letters to easily distinguish them from the operating screens To exit a help screen press or to return to the previous screen or ob to return to the Run screen The four arrow pushbuttons and move the cursor up down left and right or change values and states in specific screens The is used to select a menu item accept set save a change and or toggle on off functions Model 427 Low Source Instruction Manual 3 3 Operation Software Overview Soft Keys The Soft Keys are multi functional keys that use part of the display to identify their function at any moment The function of the soft keys allow immediate access to the menu structure and most often used menus and screens They are located directly underneath the display a
54. measured These are labeled simply as the High Range and the Low Range Each channel has its own analog output range averaging time and span coefficient This enables the sample concentration readings to be sent to the analog outputs using two different ranges For example the low NO analog output can be set to output concentrations from 0 to 200 ppb and the high NO analog output set to output concentrations from 0 to 500 ppb In addition to each channel having two ranges each channel has two span coefficients There are two span coefficients so that each range can be calibrated separately This is necessary if the two ranges are not close to one another For example if the low NO range is set to 0 200 ppb and the high NO range is set to O 20 000 ppb By default in the dual range mode the analog outputs are arranged on the rear panel connector as shown in Figure 3 5 See Table 3 3 for channels and pin connections Dual range mode may be selected from the Single Dual Auto Select in the Service Menu later in this chapter 33 ANALOG VOLTAGE OUTPUTS a7 elelelelelelslelelelslelel s s e 5 2 oooo000000000000000 i Figure 3 5 Pin Out of Rear Panel Connector in Dual Range Mode 3 10 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Operation Range Menu Table 3 3 Default Analog Outputs in Dual Range Mode Channel Pin Description 1 14 NO High Range
55. note the averaging time when calibrating The longer the averaging time the more precise the calibration will be For the most precise calibration use the 300 second averaging time For more information about calibration see Chapter 4 Calibration In the Main Menu choose Calibration gt Cal NO NO or NO Coefficents e Use and pushbuttons to move the cursor left or right e Use and to increment or decrement the numeric value enter an concentration e Press to calculate and save the new coefficient based on the ed sp 8 CHANGE VALUE SAY Model 427 Low Source Instruction Manual 3 25 Operation Calibration Menu Calibrate Pressure The Calibrate Pressure screen is used to set the calibration pressure The calibration pressure should be set only when calibrating the instrument e Inthe Main Menu choose Calibration gt Calibrate Pressure e Press to save the current chamber as the new calibration pressure Zero Span Check The Zero Span Check menu is available with the zero span valve option It is used to program the instrument to perform fully automated zero and span check or adjustments Total Duration Hour is the sum of zero span and purge duration minutes Zero and Span Calibration Reset are toggle items that change between yes or no when selected and displayed if auto calibration is installed e Inthe Main Menu choose Calibration gt Zero Span Check 3 26 Model 427 Low Sour
56. registers reads the measurement data from the g inp g Registe rs Read Input instrument Issuing either of these function codes will generate the same response These functions read the contents of one or more contiguous Registers registers These registers are 16 bits each and are organized as shown below All of the values are reported as 32 bit IEEE standard 754 floating point format This uses 2 sequential registers least significant 16 bits first The request specifies the starting register address and the number of registers Registers are addressed starting at zero Therefore registers numbered 1 16 are addressed as 0 15 The register data in the response message are packed as two bytes per register with the binary contents right justified within each byte For each register the first byte contains the high order bits and the second contains the low order bits Request Function code 1 Byte 0x03 or 0x04 Starting Address 2 Bytes 0x0000 to maximum allowed by instrument Quantity of Registers 2 Bytes 1 to maximum allowed by instrument Thermo Fisher Scientific 42i Low Source Instruction Manual C 5 MODBUS Protocol Function Codes C 6 A i Low Source Instruction Manual Response Function code Byte count Register value N Quantity of Registers Error Response Function code Exception code 1 Byte 1 Byte N x 2 Bytes 1 Byte 1 Byte 0x03 or 0x04 2 x N n NorN l Function code 0x80 01 IIlegal Fu
57. results of the above calculations The front panel display presents the NO NO 5 and NO concentrations simultaneously The display is updated every 1 10 seconds depending on the averaging time The analog output ranges are user selectable via software The analog outputs are defaulted based on the measurement range The defaults are calculated by dividing the data values by the full scale range for each of the three parameters and then multiplying each result by the user selected Model 427 Low Source Instruction Manual 8 5 System Description Electronics Electronics Motherboard External Connectors Internal Connectors 8 6 Model 427 Low Source Instruction Manual output range Negative concentrations can be represented as long as they are within 5 of full scale The zero and span values may be set by the user to any desired value All electronics operate from a universal switching supply which is capable of auto sensing the input voltage and working over the entire operating range Internal pumps and heaters all operate on 110VAC An optional transformer is required if operating on the 210 250VAC or 90 1 10VAC ranges An on off switch controls all power to the instrument and is accessible on the front panel The motherboard contains the main processor power supplies a sub processor and serves as the communication hub for the instrument The motherboard receives operator inputs from the front panel mounted function key pan
58. screen read only is used to display the current voltage readings on the motherboard e Inthe Main Menu choose Diagnostics gt Voltages gt Motherboard Voltages 3 66 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Diagnostics Menu Interface Board Voltages The Interface Board screen read only is used to display the current voltage readings on the interface board e Inthe Main Menu choose Diagnostics gt Voltages gt Interface Board Voltages I O Board Voltages The I O Board screen read only is used to display the current voltage readings on the I O expansion board This screen is displayed if the I O expansion board option is installed e Inthe Main Menu choose Diagnostics gt Voltages gt I O Board Voltages Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 67 Operation Diagnostics Menu 3 68 Temperatures The Temperatures screen read only displays the internal temperature reaction chamber temperature cooler temperature and converter temperatures The internal temperature is the air temperature measured by a sensor located on the interface board e Inthe Main Menu choose Diagnostics gt Temperatures Pressure The Pressure screen read only displays the reaction chamber pressure The pressure is measured by a pressure transducer at the reaction chamber e Inthe Main Menu choose Diagnostics gt Pressure Flow The Flow screen
59. the calibration action zero or span The analog output calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter WARNING This adjustment should only be performed by an instrument service technician e Inthe Main Menu choose Service gt Analog Out Calibration 3 90 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Service Menu Analog Output Calibrate Zero The Analog Output Calibrate Zero screen allows the user to calibrate the zero state of the selected analog output The operator must connect a meter to the output and adjust the output until it reads 0 0 V on the meter e Inthe Main Menu choose Service gt Analog Out Calibration gt Select Channel gt Calibrate Zero e Use and to increment or decrement the numeric value e Press to save the value Analog Output Calibrate The Analog Output Calibrate Full Scale screen allows the user to calibrate Full Scale the full scale state of the selected analog output The operator must connect a meter to the output and adjust output until it reads the value shown in the set output to field e In the Main Menu choose Service gt Analog Out Calibration gt Select Channel gt Calibrate Full Scale e Use and to increment or decrement the numeric value e Press to save the value Thermo Fisher Scientific
60. the four retaining screws securing the power supply to the power supply plate and remove the power supply 5 To install the DC power supply follow the previous steps in reverse Analog Outp ut Testi NO The analog outputs should be tested if the concentration value on the front panel display disagrees with the analog outputs To check the analog outputs you connect a meter to an analog voltage output channel and compare the meter reading with the output value set on the Test Analog Outputs screen Use the following procedure to test the analog outputs 1 Connect a meter to the channel to be tested Figure 7 17 shows the analog output pins and Table 7 3 identifies the associated channels 7 30 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Servicing Analog Output Testing speleja laia falafels alaa afa e s lafa o Eeee aTe alaala aTa Figure 7 17 Rear Panel Analog Voltage Output Pins Table 7 3 Analog Output Channels and Rear Panel Pin Connections Channel Pin 1 14 2 33 3 15 4 34 5 17 6 36 Ground 161819 35 37 2 From the Main Menu press to scroll to Diagnostics gt press gt to scroll to Test Analog Outputs and press The Test Analog Outputs screen appears 3 Press to scroll to the channel Voltage Channel 1 6 corresponding to the rear panel terminal pin where the meter is connected and press Thermo Fisher Scientific Model 427 Low
61. the instrument s identification number plus 128 For example if the instrument ID is set to 25 then each command must begin with the ACSI character code 153 decimal The analyzer ignores any command that does not begin with its instrument identification number If the instrument ID is set to 0 then this byte is not required For more information on changing Instrument ID see Chapter 3 Operation The analyzer must be in the remote mode in order to change instrument parameters via remote However the command set mode remote can be sent to the analyzer to put it in the remote mode Report commands commands that don t begin with set can be issued either in the remote or local mode For information on changing modes see Chapter 3 Operation The commands can be sent in either uppercase or lowercase characters Each command must begin with the proper instrument identification number ASCII character The command in the example below begins with the ASCII character code 170 decimal which directs the command to the Model 427 Low Source and is terminated by a carriage return CR ASCI character code 13 decimal asci 170 gt kiii lt CR gt If an incorrect command is sent a bad command message will be received The example below sends the incorrect command set unit ppm instead of the correct command set gas unit ppm Send set unit ppm Receive set unit ppm bad cmd The save an
62. the user to configure password protection If the instrument is locked none of the settings may be changed via the front panel user interface This menu is shown only if the password protection is unlocked and a password has been entered or the password has not been set e Inthe Main Menu choose Password Set Password The Set Password screen is used to set the password to unlock the front panel The set password is shown if the instrument is unlocked and the password not set e Inthe Main Menu choose Password gt Set Password e Press to enter password and disable instrument lock Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 97 Operation Password Lock Instrument The Lock Instrument screen is used to lock the instrument s front panel so users can not change any settings from the front panel The lock instrument is shown if the instrument is unlocked and the password set e Inthe Main Menu choose Password gt Lock Instrument e Press to enable instrument lock and returns to main menu Change Password The Change Password is used to change the password used to unlock the instrument s front panel The change password is shown if the instrument is unlocked e Inthe Main Menu choose Password gt Change Password e Press to change password 3 98 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Password Remove Password The Remove Password scree
63. times are available in Model 42i Low Source Instruction Manual 3 17 Operation Calibration Factors Menu Calibration Factors Menu 3 18 Model 427 Low Source Instruction Manual manual NO and manual NO modes 1 2 and 5 seconds For more x information about the manual mode see Auto Manual Mode later in this chapter e Inthe Main Menu choose Averaging Time e Use and to scroll through a list of choices e Press to save the averaging time Calibration factors are used to correct the NO NO3 and NO concentration readings that the instrument generates using its own internal calibration data The Calibration Factors menu displays the calibration factors The screens below show the calibration factors menu in single mode and dual auto range modes Normally the instrument is calibrated automatically using the commands listed in the Calibration menu described later in this chapter However the instrument can also be calibrated manually using the Calibration Factors menu To manually calibrate the instrument see NO and NO Backgrounds NO NO and NO Span Coefficients and Calibration Pressure below e Inthe Main Menu choose Calibration Factors Thermo Fisher Scientific NO and NO Backgrounds Thermo Fisher Scientific Operation Calibration Factors Menu The NO and NO background corrections are determined during zero calibration The NO background is the amount o
64. value Chamber Pressure User set alarm min value PMT Volts 700 volts Operation Instrument Controls Menu Full Scale 100 Value User set alarm max value User set alarm max value 1100 volts Everything Else 0 units 10 units The Choose Signal to Output screen displays a submenu list of the analog output signal group choices Group choices are Concentrations Other Measurements and Analog Inputs if the I O expansion board option is installed This allows the user to select the output signal to the selected output channel The Concentrations screen is shown below See Table 3 8 below for a list of items for each signal group choice e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Output Config gt Select Channel gt Choose Signal To Output Use jand to move the cursor up and down e Press to select a choice Table 3 8 Signal Type Group Choices Concentrations None NO single auto range mode NO single auto range mode NO single auto range mode LO NO dual mode Other Measurements None Internal Temp Chamber Temp Cooler Temp NO Converter Temp Analog Inputs None Analog Input 1 Analog Input 2 Analog Input 3 Analog Input 4 Model 427 Low Source Instruction Manual 3 57 Operation Instrument Controls Menu Table 3 8 Signal Type Group Choices Concentrations Other Measurements LO NO dual mode Chamber Pressure LO NO dual mode PMT Volts
65. value as actual value 3 78 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Ozonator Flow Zero and Span Check Max Zero and Span Offset Thermo Fisher Scientific Operation Alarms Menu The Ozonator Flow screen read only is used to display the ozonator flow readings If the ozonator flow reading is 0 050 LPM 50 cc or below an alarm is activated and an alarm condition screen appears as LOW If the ozonator flow is above 0 050 LPM the no alarm condition screen is displayed indicating that the flow is acceptable Inadequate ozonator flow will cause the ozonator to overheat resulting in permanent damage to the ozonatot e Inthe Main Menu choose Alarms gt Ozonator Flow The Zero Span Check screen allows the user to view the status of the most recent zero check and set the maximum zero check offset The zero and span check screens are displayed if the zero span check option is enabled and function the same way e Inthe Main Menu choose Alarms gt Zero or Span Check The Max Zero Check Offset screen is used to change the maximum zero check offset The maximum zero and span offset screens function the same way e Inthe Main Menu choose Alarms gt Zero or Span Check gt Max Offset Model 427 Low Source Instruction Manual 3 79 Operation Alarms Menu 3 80 Zero and Span Auto Calibration NO NO and NO Concentration Model 42i Low Source Instruction Manual e Use
66. voltage and current e Analog input voltage e Digital output TTL levels e Digital input TTL levels Note The instrument has spare solenoid valve drivers and I O support for future expansion a The instrument provides six analog voltage outputs Each may be software configured for any one of the following ranges while maintaining a minimum resolution of 12 bits e 0 100mV e 0 1V 0 5V e 0 10V Model 427 Low Source Instruction Manual 8 9 System Description 1 0 Components 8 10 Analog Current Outputs Optional Analog Voltage Inputs Optional Digital Relay Outputs Model 42i Low Source Instruction Manual The user can calibrate each analog output zero and span point through firmware At least 5 of full scale over and under range are also supported The analog outputs may be assigned to any measurement or diagnostic channel with a user defined range in the units of the selected parameter The voltage outputs are independent of the current outputs The optional I O Expansion board includes six isolated current outputs These are software configured for any one of the following ranges while maintaining a minimum resolution of 11 bits e 0 20 mA e 4 20 mA The user can calibrate each analog output zero and span point through firmware At least 5 of full scale over and under range are also supported The analog outputs may be assigned to any measurement or diagnostic channel with a user defined range i
67. 0 0 20 000 20 0 50 000 50 0 50 000 50 0 100 000 100 100 000 100 200 000 200 200 000 200 500 000 500 500 000 500 750 000 750 C1 C1 C1 C1 C2 C2 C2 C2 C3 C3 C3 C3 C1 C2 and C3 are custom ranges For more information about custom cc 39 ranges see Set Custom Ranges below The Set Custom Ranges menu lists three custom ranges C1 C2 and C3 Custom ranges are user defined ranges In the standard range mode any value between 200 ppb 0 2 ppm and 100 000 ppb 100 ppm can be specified as a range In the ug m mg m mode any value between 500 ug m 0 5 mg m and 150 000 g m 150 mg m can be specified as a range In the extended range mode any value between 1 000 ppb 1 0 ppm and 500 000 pee 500 ppm can be specified as a range In the ug m mg m mode any value between 2 000 g m 2 0 mg m and 750 000 ug m 750 mg m can be specified as a range e Inthe Main Menu choose Range gt Set Custom Ranges Thermo Fisher Scientific Custom Ranges Averaging Time Thermo Fisher Scientific Operation Averaging Time The Custom Ranges screen is used to define the custom ranges The display shows the current custom range The next line of the display is used to set the range To use the custom full scale range be sure to select it Custom range 1 2 or 3 in the NO NO or NO Range screen For more information about selecting ranges see NO NO and NO Ranges above e Inthe Main Menu
68. 00 Fuse 250VAC 4 0 Amp SlowBlow for 100VAC and 110VAC models 101904 00 Fuse 250VAC 2 0 Amp SlowBlow for 220 240VAC models 101399 00 Transformer 220 240VAC Optional 101863 00 Transformer 100VAC Optional 4119 Capillary 0 008 inch red 4127 Capillary 0 015 inch purple 8630 Filter Guard Assembly w foam 6556 Optical Filter Assembly 101562 00 Terminal Block and Cable Kit DB25 101556 00 Terminal Block and Cable Kit DB37 Table 7 2 describes the Model 42i Low Source spare cables See the Troubleshooting chapter for associated connection diagrams and board connector pin descriptions Table 7 2 Model 427 Low Source Cables 7 6 Model 427 Low Source Instruction Manual Part Number Description 101346 00 Temperature Control 101355 00 Signal Input 101688 00 Ambient Temperature 101695 00 Permeator Oven 101050 00 Heater Power 101036 00 DC Power Supply 24V Output 101037 00 115VAC Supply to Interface Board 101048 00 RS 485 Data 101038 00 Power Switch to Motherboard 101364 00 DC Power Supply Status Monitor 101055 00 Main AC Receptacle Assembly 101054 00 Motherboard to Front Panel Board 101035 00 DC Power Supply AC Input 101033 00 AC from Outlet Thermo Fisher Scientific Servicing Cable List Table 7 2 Model 427 Low Source Cables continued Part Number Description 101377 00 AC to Power Switch 102057 00 AC to External Pump 101267 00 Fan Power Cable Silica Reaction Converter Scrubber Chamber
69. 1 000 norange 100000 000 noxrange 100000 000 no2range 100000 000 lonorange 100000 000 lonoxrange 100000 000 lono2range 100000 000 lrec srec lrec xxxx yy STEC XXXX YY lrec aa bb 00 pp qq yy srec aa bb 00 pp qq yy xxxx the number of past records yy the number of records to return 1 to 10 aa hours 01 to 24 bb minutes 01 to 59 oo month 01 to 12 pp day 01 to 31 qq year These commands output long or short records and dynamic data The output format is determined by the set lrec format and set srec format commands The logging time is determined by the set lrec per and set srec per commands In dual range the long records and short records contain the high and low NO and NO concentrations In single range the low NO and low NO values are set to 0 and the high NO and high NO are used In NO or NO only mode the pertinent high value used other concentrations are set to 0 Concentrations are stored in either ppb or ug m In the following example there are 740 long records currently stored in memory When the command Irec 100 5 is sent the instrument counts back 100 records from the last record collected record 740 and then returns 5 records 640 641 642 643 and 644 For details on how to decode the flag fields within these records see Figure B 1 in the flags command Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Datalogging Se
70. 2 33 NO High Range 3 15 NO High Range 4 34 NO Low Range 5 17 NO Low Range 6 36 NO Low Range Ground 16 18 19 35 37 Signal Ground Note All channels are user definable If any customization has been made to the analog output configuration the default selections may not apply Auto Range Mode The auto range mode switches the NO NO and NO analog outputs between high and low ranges depending on the NO concentration level except when continuous NO mode is active The high and low ranges are defined in the Range menu For example suppose the low ranges are set to 200 ppb and the high ranges are set to 1000 ppb Figure 3 6 Sample concentrations below 200 ppb are presented to the low ranges analog outputs and sample concentrations above 200 ppb are presented to the high ranges analog outputs When the low ranges are active the status output is at 0 volts When the high ranges are active the status output is at half of full scale When the high ranges are active the NO concentration must drop to 95 of the low NO range for the low ranges to become active In addition to each channel having two ranges each channel has two span coefficients There are two span coefficients so that each range can be calibrated separately This is necessary if the two ranges are not close to one another For example if the low NO range is set to 0 200 ppb and the high NO range is set to 0 20 000 ppb Thermo Fisher Scientific Model 427 Low
71. 27 Low Source Instruction Manual Thermo Fisher Scientific Operation Calibration Factors Menu NO NO and NO The NO NO3 and NO span coefficients are usually calculated by the Coefficients instrument processor during calibration The span coefficients are used to correct the NO NO and NO readings The NO and NO span coefficients normally have values near 1 000 The NO span coefficient normally has a value between 0 95 and 1 050 The NO NOs and NO Coefficient screens allow the NO NO5 and NO span coefficients to be manually changed while sampling span gas of known concentration The NO NO3 and NO coefficient screens operate the same way Therefore the following description of the NO coefficient screen applies to the NO and NO coefficient screens as well The display shows the current NO concentration reading The next line of the display shows the NO span coefficient that is stored in memory and is being used to correct the NO concentration Notice that as the span coefficient value is changed the current NO concentration reading on the above line also changes However no real changes are made to the value stored in memory until is pressed Only proposed changes as indicated by a question mark prompt are displayed until is pressed In dual or auto range mode High or Low is displayed to indicate the calibration of the high or low coefficient The example below shows the coefficient screen in single mode No
72. 3 Cond Pl 2 Pin AC FRONT PANEL POWER SW pHSSesseess eaee p PJ6 i i TRANSFCAVER ne es E eee 4 Q0VAC or 240VAC ee CPTIAS i Figure 6 1 Board Level Connection Diagram Common Electronics 6 6 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Troubleshooting Board Level Connection Diagrams INPUT BOARD Cuas 2 1 10 Pin d IL Cond PMTANODE 7 Pin 2 Cond Pin SAMA ERON 5 Pin CAOWSW 3 Pin CZCNATCR 2 Pin cooR 4 Pin AVBIENT TEVP THER 2 Pin i se a a a I 2 Pin m GAS THEM PEM OIN L HEATER 15V 1W one DATA 4 Pin J amp MENITE a a a jl lt lt PPJ8 l 3 Pin NON SL 2 Pin _ SAMMES 2 Pin mE _ ZPN Pin a SPARE1 SO in E TR SPARE2 SOL 24 DC FANI 2 Pin T N 2 Pin Pin ACT BNHHATER 60w a COWERTERHEATEROOW AC OOMARIRTHAMOLAE PJ3 3 Pin Figure 6 2 Board Level Connection Diagram Measurement System Thermo Fisher Scientific Model 42 Low Source Instruction Manual 6 7 Troubleshooting Connector Pin Descriptions Connector Pin The connector pin descriptions in Table 6 3 through Table 6 9 can be used Descri ptions along with the board level connection diagrams to troubleshoot board level faults Table 6 3 Motherboard Connector Pin Descriptions Connector Label INTF DATA 10 BASE T INTF DATA 10 BASE T EXPANSION BD 6 8 Model 427 Low Source Instruction Manual Reference Designator J1 J2 J1 J2 J3 Pin oO
73. 4 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Servicing Ozonator Assembly Replacement 3 Loosen the four captive screws securing the ozonator bracket to the floor plate Captive Screws 4 Ozonator Ozonator Transformer Screws 4 Ozonator Assembly Side View Figure 7 14 Replacing the Ozonator Assembly 4 Remove the two screws securing the ozonator to the ozonator bracket 5 Unplug the ozonator from the ozonator transformer by lifting the ozonator straight up 6 To install the ozonator follow the previous steps in reverse 7 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Model 427 Low Source Instruction Manual 7 25 Servicing Ozonator Transformer Replacement Ozonator Transformer Replacement Input Board Replacement 7 26 Model 427 Low Source Instruction Manual Use the following procedure to replace the ozonator transformer Figure 7 14 Equipment Required Ozonator transformer Philips screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the ozonator assembly as described in Ozonator Assembly Replacement 3 Disconnect
74. 8 MJ9 MJ10 Pin Se wo N e O N co co N O o FP O N N D Signal Description Ground RS485 from Motherboard RS485 from Motherboard Pressure Sensor Input Ground 15V 15V 15V Ground 15V 5V Ground Measurement Frequency Output Amplifier Zero Adjust Voltage SPI Output SPI Clock SPI Board Select Ambient Temperature Thermistor Ground HV Power Supply Voltage Adjust Ground Model 427 Low Source Instruction Manual 6 13 Troubleshooting Connector Pin Descriptions Table 6 4 Measurement Interface Board Connector Pin Descriptions continued Connector Label FLOW SW FLOW TEMP CTRL OZONATOR 24V IN PROV INPUT AC PUMP 6 14 Model 427 Low Source Instruction Manual Reference Designator MJ14 MJ15 MJ17 0J1 P1 P2 PJI Pin N gt N DO o Aa Ww on A O N N gt oOo oO Aa W N N co co N O on A WW N _ Signal Description HV Power Supply On Off Ground HV Power Supply Voltage Monitor Ground Ground NC Ground Ozonator Flow OK Switch Flow Sensor Input Ground 15V 15V Ground Bench Temperature Input Ground 15V Converter Heater On Off Converter Temperature Input 15V_PWR Ozonator Output A Ozonator Output B 24V Ground Spare Voltage Input Ground Ground Ground Ground Ground Spare Frequency Input Ground Ground AC HOT Thermo Fisher Scientific Troubleshooting Connector Pin
75. 9200 RLE decode the screen for i 0 i lt 19200 amp amp ptr screen lt 19200 i ptr rlescreen i if rlescreen i 0 unsigned char rlecount unsigned char rlescreen i while rlecount ptrt 0 rlecount else if rlescreen i Oxff unsigned char rlecount unsigned char rlescreen i while rlecount ptr Oxttf rlecount To convert this data into a BMP for use with windows it needs to be turned into a 4BPP as that is the smallest windows can display Also note that BMP files are upside down relative to this data i e the top display line is the last line in the BMP Model 427 Low Source Instruction Manual B 27 C Link Protocol Commands Measurement Configuration B 28 Measurement Configuration Model 42i Low Source Instruction Manual sc screen This command is meant for backward compatibility on the C series Screen information is reported using the iScreen command above Send screen Receive screen This is an I series Instrument Screen Information not available range no range no2 range nox high range no high range no2 high range nox low range no low range no2 low range nox These commands report the NO NO and NO ranges in single range mode or the high and low ranges in dual or auto range mode according to Table B 6 and B 7 If the mode is incorrect the instrument responds with cant wrong setting
76. A AEE ERE ATE E N 8 3 Sample Capillary e a E anes 8 3 Dirr r E a eaa AEE EEN 8 4 Ammonia SCU DDE Eca a 8 4 O ace Meccan atte ceoe see eaten a een eee 8 4 TaSt ruven Conto lerinen a E a iaceeaacaes 8 4 Monitoring Signals sis 2c sscesietseeistatthenek pivton ised teatieds 8 4 Measurement Calculations siant 8 5 Output Communication ou c e eae 8 5 EIEC OIC A E TEE E A 8 6 Motherboard cosan r EE 8 6 Measurement Interface Board sun tarsartuuceviidatspisanirretouces 8 7 Pressure Sensor AssemiDly susien eei e in namieen 8 7 Temperature Control Bodrdsonisniania a 8 8 PMT Power Supply Assembly x cascovsnaveeunasenyecteusranedenyeeaeus notes 8 8 liput Board Asser bl ye ene E E N 8 8 Diera Output Boano E E 8 8 I O Expansion Board Optional sssssesssesssessssesesssessereseess 8 9 Front Panel Connector BDoardesresessie nnen 8 9 1 Or Components niaan aa 8 9 Analog Voltage Outputs scsedvcveiicheastcictnchanctenetedeebeoisiodiew ead 8 9 Analog Current Outputs Optional eee eeeeeseeeeeneeees 8 10 Analog Voltage Inputs Optional eee eeeseeeeeseeeeeneeees 8 10 Digital Relay Outputs mcer eter 8 10 Dicital TO Ute ecasicsets neta cesetieen oi ecetternupsbeatineiseeniteeioabnnceeetenventee 8 11 SEALT OLS sesana or E EN 8 11 Ro COn C O a AAEN 8 11 RS 485 Connection seen EO 8 12 Pc HernierC onne coea niente nceepiereneea ees 8 12 External Accessory Connector cer siuds cennveseeasbbecevcaaseecenesnedencs 8 12 Model 427 Low Source Instruction Ma
77. B 28 B 11 B 43 B 26 B 26 B 30 B 35 B 35 B 28 B 22 B 30 B 17 B 18 B 19 B 20 B 20 B 20 B 22 B 23 B 32 B 35 B 26 B 30 Thermo Fisher Scientific C Link Protocol Commands Measurements Measurements avg time high avg time low avg time These commands report the averaging time in seconds when operating in single range or averaging time used with the high and low ranges when operating in dual or auto range mode The example below shows that the averaging time is 300 seconds according to Table B 2 Send avg time Receive avg time 11 300 sec set avg time selection set high avg time selection set low avg time selection These commands set the averaging time high and low averaging times according to Table B 2 The example below sets the low range averaging time to 120 seconds Send set low avg time 8 Receive set low avg time 8 ok Table B 2 Averaging limes Selection Time NO Measure Mode Time NO NO Measure NO Measure Mode Mode 0 1 seconds 1 2 2 5 3 10 10 seconds 4 20 20 a 30 30 6 60 60 7 90 90 8 120 120 9 180 180 10 240 240 11 300 300 Thermo Fisher Scientific Model 427 Low Source Instruction Manual B 9 C Link Protocol Commands Measurements B 10 Model 42i Low Source Instruction Manual no no2 nox high no high no2 high nox low no low no2 low nox These commands report the measured NO NO3 and NO concentrations when operating in single range or high and low
78. CE Model 42i Low Source Instruction Manual Chemiluminescence NO NO2 NO Analyzer Part Number 102031 00 20Dec2007 2007 Thermo Fisher Scientific Inc All rights reserved Specifications terms and pricing are subject to change Not all products are available in all countries Please consult your local sales representative for details Thermo Fisher Scientific Air Quality Instruments 27 Forge Parkway Franklin MA 02038 1 508 520 0430 www thermo com aqi Thermo Fisher Scientific WEEE Compliance This product is required to comply with the European Union s Waste Electrical amp Electronic Equipment WEEE Directive 2002 96 EC It is marked with the following symbol Thermo Fisher Scientific has contracted with one or more recycling disposal companies in each EU Member State and this product should be disposed of or recycled through them Further information on Thermo Fisher Scientific s compliance with these Directives the recyclers in your country and information on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Directive are available at www thermo com WEEERoHS WEEE Compliance Thermo Fisher Scientific Chapter 1 Chapter 2 Chapter 3 Contents DIVER OC UNG CN OOID ees cctissecte iis cesta vnsuesseceesisvdeasuirvsbunen tania danwautvaeteuatadeetacetns 1 1 Pringiple OF OPTa ON siete oraviist eal etcustseteocucesyessaeue nacht 1 2 SPOCIM CATION
79. Configuration B 32 Hardware Configuration Model 42i Low Source Instruction Manual temp comp This command reports whether temperature compensation is on or off The example below shows the temperature compensation is off Send temp comp Receive temp comp off set temp comp onoff These commands turn the temperature compensation on or off The example below turns temperature compensation off Send set temp comp off Receive set temp comp off ok contrast This command reports the screen s level of contrast The example below shows the screen contrast is 50 according to Table B 8 Send contrast Receive contrast 5 50 set contrast evel This command sets the screen s evel of contrast according to Table B 8 The example below sets the contrast level to 50 Send set contrast 5 Receive set contrast 5 ok Table B 8 Contrast Levels Level Contrast Level 0 0 10 20 30 40 50 60 70 80 90 100 j CO NI Om ol AI Wy NH 4 Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Hardware Configuration conv set temp This command reports the temperature that the NO converter is set to The example below reports that the converter temperature is set to 625 C Send conv set temp Receive conv set temp 625 deg C set conv set temp value This command sets the temperature that the NO converter is set to where value is an integer representing degrees C Th
80. Date Time screen and allows the user to view and change the system date and time 24 hour format The internal clock is powered by its own battery when instrument power is off e Inthe Main Menu choose Instrument Controls gt Date Time e Use gt and to move and change the value of the date and time e Press to edit and save the new date and time Diagnostics Menu The Diagnostics menu provides access to diagnostic information and functions This menu is useful when troubleshooting the instrument The analog input readings and analog input voltages are displayed if the I O expansion board option is installed e Inthe Main Menu choose Diagnostics Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 65 Operation Diagnostics Menu Program Version The Program Version screen read only shows the version number of the program installed Prior to contacting the factory with any questions regarding the instrument please note the program version number e Inthe Main Menu choose Diagnostics gt Program Version Voltages The Voltages menu displays the current diagnostic voltage readings This screen enables the power supply to be quickly read for low or fluctuating voltages without having to use a voltage meter The I O board is displayed if the I O expansion board option is installed e Inthe Main Menu choose Diagnostics gt Voltages Motherboard Voltages The Motherboard
81. Descriptions Table 6 4 Measurement Interface Board Connector Pin Descriptions continued Connector Label FAN 1 FAN 2 AC IN COOLER AC TEMP NO NOX SOL SAMPLE SOL Z S SOL SPARE1 SOL SPARE2 SOL PERM OVEN THERM PERM OVEN Thermo Fisher Scientific Reference Designator PJ4 Pub PJG PJ7 PJ8 PUY PJ10 PJ11 PJ12 Fulo POJ1 POJ3 Pin O N A O N _ lt e O N gt jw N Signal Description AC NEUT AC Ground 24V Ground 24V Ground AC HOT AC NEUT AC Ground Cooler Thermistor Ground 15V_PWR Cooler On Off Control AC HOT AC NEUT AC Ground 24V NO NOX Solenoid Control 24V Sample Solenoid Control 24V Zero Span Solenoid Control 24V Spare 1 Solenoid Control 24V Spare 2 Solenoid Control Perm Oven Gas Thermistor Ground Perm Oven Heater On Off 15V_PWR Perm Oven Thermistor Ground Model 42 Low Source Instruction Manual 6 15 Troubleshooting Connector Pin Descriptions 6 16 Model 42i Low Source Instruction Manual Table 6 5 Front Panel Board Connector Pin Diagram Connector Label MOTHER BOARD Reference Designator J1 Pin co co N O o A O N em Signal Description Ground Ground LCLK LCD Signal Ground Ground LLP LCD Signal LFLM LCD Signal LD4 LCD Signal LDO LCD Signal LD5 LCD Signal LD1 LCD Signal LD6 LCD Signal LD2 LCD Signal
82. INT TEMP ALARM CHAMB TEMP ALARM COOLER TEMP ALARM NO CONVERTER TEMP ALARM NOT USED Thermo Fisher Scientific Thermo Fisher Scientific Coil Number 23 24 25 26 27 28 29 30 31 32 Register Number 40001 amp 40002 40003 amp 40004 40005 amp 40006 40007 amp 40008 40009 amp 40010 40011 amp 40012 40013 amp 40014 40015 amp 40016 40017 amp 40018 40019 amp 40020 40021 amp 40022 40023 amp 40024 40025 amp 40026 40027 amp 40028 40029 amp 40030 40031 amp 40032 40033 amp 40034 40035 amp 40036 40037 amp 40038 MODBUS Protocol MODBUS Commands Supported Table C 1 Read Coils for 42i Low Source Status NOT USED PRESSURE ALARM NOT USED OZONE FLOW ALARM MOTHERBOARD STATUS ALARM INTERFACE BD STATUS ALARM I O EXP BD STATUS ALARM NOT USED CONC ALARM SAMPLE MODE Table C 2 Read Registers for 427 Low Source Variable NO NO NO NOT USED NOT USED LO NO LO NO LO NO NOT USED NOT USED HI NO HI NO HI NO NOT USED NOT USED RANGE NO NOT USED INT TEMP CHAMBER TEMP A i Low Source Instruction Manual C 9 MODBUS Protocol MODBUS Commands Supported Table C 2 Read Registers for 42i Low Source C 10 42i Low Source Instruction Manual Register Number Variable 40039 amp 40040 COOLER TEMP 40041 amp 40042 NO CNV TEMP 40043 amp 40044 NOT USED 40045 amp 40046 NOT USED 40047 amp 40048 NOT USED 40049 amp 40050 CHAMBER PRES 40051 amp 40052 NOT USED 40053 amp 40054 PMT VOLTS 40055 amp 40056 A
83. Instrument Controls gt Communication Settings gt TCP IP Settings Use DHCP The Use DHCP screen is used to specify whether to use DHCP or not Note The instrument power must be cycled after this parameter has been changed for the change to take effect e Inthe Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt Use DCHP e Press to toggle and set DHCP on or off Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 47 Operation Instrument Controls Menu IP Address The IP Address screen is used to edit the IP address e Inthe Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt IP Address e Use gt and to move and change the value of the IP address e Press to save the new address Netmask The Netmask screen is used to edit the netmask address e Inthe Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt Netmask e Use gt and to move and change the value of the netmask e Press to save the new address 3 48 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Gateway Host Name Operation Instrument Controls Menu The Gateway screen is used to edit the gateway address e Inthe Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Setting
84. LE bulkhead and allow the analyzer to sample zero air until the NO NO and NO responses stabilize 3 When the responses stabilize from the Main Menu choose Calibration gt Calibrate NO Background 4 The Set NO Background screen displays the current NO background and NO concentration Thermo Fisher Scientific Calibrate Low NO Calibrate Low NO Thermo Fisher Scientific Calibration Calibration in Dual Range and Auto Range Mode Press to set the NO background to zero Press gt to return to the Run screen Repeat Steps 3 through 6 selecting Calibrate NOx Background to set the NO background to zero Use the following procedure to calibrate NO channel to the NO calibration gas l Disconnect the source of zero air from the SAMPLE bulkhead In its place connect a source of NO calibration gas of about 80 of the low NO full scale range Allow the analyzer to sample the low NO calibration gas until the NO NOs and NO readings stabilize When the responses are stabile from the Main Menu choose Calibration gt Calibrate Lo RNG NO The Lo NO field displays the current NO concentration The Lo NO Span Conc field is where you enter the low NO calibration gas concentration Use to move the cursor left and right and use C to increment and decrement the numeric character at the cursor Press to calculate and save the new low NO coefficient based on the entered span concentration
85. Mode e NO Measure Mode e Zero Gas Mode e Span Gas Mode The actual use of these inputs will vary based on analyzer configuration The digital inputs are TTL level compatible and are pulled up within the analyzer The active state can be user defined in firmware Two serial ports allow daisy chaining so that multiple analyzers may be linked using one PC serial port The standard bi directional serial interface can be configured for either RS 232 or RS 485 The serial baud rate is user selectable in firmware for standard speeds from 1200 to 19 200 baud The user can also set the data bits parity and stop bits The following protocols are supported e C Link e Streaming Data e Modbus Slave The Streaming Data protocol transmits user selected measurement data via the serial port in real time for capture by a serial printer data logger or PC A null modem crossed cable is required when connecting the analyzer to an IBM Compatible PC However a straight cable one to one may be required when connecting the analyzer to other remote devices As a general rule when the connector of the host remote device is female a straight cable is required and when the connector is male a null modem cable is required Data Format 1200 2400 4800 9600 19200 38400 57600 or 115200 BAUD 8 data bits Model 427 Low Source Instruction Manual 8 11 System Description 1 0 Components RS 485 Connection Ethernet Connection External Acces
86. Model 42 Low Source Instruction Manual 6 11 Troubleshooting Connector Pin Descriptions Table 6 3 Motherboard Connector Pin Descriptions continued Connector Reference Pin Signal Descriptions Label Designator 22 Keypad Row 1 Input 23 Keypad Row 4 Input 24 Keypad Row 3 Input 25 Keypad Col 2 Select 26 Keypad Col 1 Select 27 Keypad Col 4 Select 28 Keypad Col 3 Select 29 Ground 30 Ground 31 Ground 32 Ground 33 24V 34 24V RS232 RS485 A P1 A NC Serial Port 1 RX RS485 IN Serial Port 1 TX RS485 OUT NC Ground NC Serial Port 1 RTS RS485 OUT Serial Port 1 CTS RS485 IN NC NC Serial Port 2 RX RS485 IN Serial Port 2 TX RS485 OUT NC Ground NC Serial Port 2 RTS RS485 OUT Serial Port 2 CTS RS485 IN NC AC HOT 2 AC NEUT co co N wo on A W N RS232 RS485 B P1 B _ co co N O oO A WwW N AC IN PJ1 6 12 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Troubleshooting Connector Pin Descriptions Table 6 3 Motherboard Connector Pin Descriptions continued Connector Label AC 24VPWR AC INTF BD Reference Designator FuZ PJ3 Pin o N gt Signal Descriptions AC Ground AC HOT AC NEUT AC Ground AC HOT AC NEUT AC Ground Table 6 4 Measurement Interface Board Connector Pin Descriptions Connector Label DATA PRES INPUT BD AMB TEMP HVPS Thermo Fisher Scientific Reference Designator PU8 MJ3 MJ
87. Model 42i Low Source Instruction Manual 3 91 Operation Service Menu 3 92 Analog Input Calibration Analog Input Calibrate Zero Model 42i Low Source Instruction Manual The Analog Input Calibration menu is a selection of 8 analog inputs if the I O expansion board option is installed to calibrate and allows the user to select the calibration action zero or span The analog input calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter WARNING This adjustment should only be performed by an instrument service technician e Inthe Main Menu choose Service gt Analog Input Calibration The Analog Input Calibrate Zero screen allows the user to calibrate the zero state of the selected analog input In the Main Menu choose Service gt Analog Input Calibration gt Select Channel gt Calibrate Zero Hook up a voltage source of 0 V to the analog input channel e Press to save the value Thermo Fisher Scientific Operation Service Menu Analog Input Calibrate Full Scale The Analog Input Calibration Full Scale screen allows the user to calibrate the full scale state of the selected analog input e Inthe Main Menu choose Service gt Analog Input Calibration gt Select Channel gt Calibrate Full Scale Hook up a voltage source of 10 V to the analog input channel e Use and to incre
88. NALOG IN 1 40057 amp 40058 ANALOG IN 2 40059 amp 40060 ANALOG IN 3 40061 amp 40062 ANALOG IN 4 40063 amp 40064 ANALOG IN 5 40065 amp 40066 ANALOG IN 6 40067 amp 40068 ANALOG IN 7 40069 amp 40070 ANALOG IN 8 Table C 3 Write Coils for 427 Low Source Coil Number Action Triggered 101 ZERO MODE 102 SPAN MODE 103 NO MODE 104 NO MODE 105 NOT USED 106 NOT USED 107 SET BACKGROUND 108 CAL TO LO SPAN 109 AOUTS TO ZERO 110 AOUTS TOFS 111 CAL TO HI SPAN Thermo Fisher Scientific Serial Communication Parameters Thermo Fisher Scientific Appendix D Geysitech Bayern Hessen Protocol This appendix provides a description of the Geysitech Bayern Hessen or BH Protocol Interface and is supported both over RS 232 485 as well as TCP IP over Ethernet The Geysitech Commands that are implemented are explained in detail in this document The Geysitech protocol support for the Series enables the user to perform the functions of reading the various concentrations and to trigger the instrument to be in sample zero span mode if valid for that instrument This is achieved by using the supported Geysitech commands listed below For details of the Model 427 Low Source Geysitech Protocol specification see the following topics e Serial Communication Parameters on page D 1 e TCP Communication Parameters on page D 2 e Instrument Address on page D 2 e Abbreviations Used on page D 2 e Basic Command Structure
89. OZOD ON ets aa a a a cu pecanesakent 3 30 PAET S Opp oere E E E 3 31 Auto Man al Mode nuricorneiecanineeai iiei n E liaa 3 31 Atal SPS Settna sioe e ei EAE 3 32 Communica HoN Sett NES aiie eiis neue epee 3 42 VOCOni oUa inea E AA 3 50 Temperature Compensation scsns candepacanmdasetanarsseteweeanaiines 3 62 Pressiire Compensation eronneen A ER 3 63 Sercon CONTAS Eosen ai a a oaa a a 3 64 Sence N Ode esena a E 3 64 Dae T e R E 3 65 Diagnostic MCN Uctacsticreeoteseancdeanaisasiaevadeesa E En 3 65 Proe raor VenO a a a 3 66 NY OME re S EE N A T E E E A E E eee 3 66 Temperaire anre i a 3 68 Pres a seuss mettecnsatedseteceteasts aiuadonaaeees 3 68 PON Sean an eRe te DT ante Or eee a ane nee meee MCE 3 68 Analog loput READIN OS saisis nna a 3 69 Analog loput Voltages armeenia RE 3 69 Digtal inputs catesinosdecevesttetancevtuninieacumcnvectubiitendievenieiwtaes 3 70 FSU EE A E E EA 3 70 West Analog Out outs eesin E 3 70 Instrument Configuration ssssesssssessssrssrerssrsseesseessressresees 3 72 Contact nformat ouesse ei or aia ea baw ea eis 3 72 Alarms Menu os2sveecsensiezsacenvcbasevlenennnvoden vensve leven veelejegesvenieaesencees 3 73 Taternal Tomp ete tee eiii a ocinete ty ncauaeceitaans 3 74 Chamber T emiperatute anar a ET 3 75 Cooler Fem peraviie serani iiia on Ea 3 76 Convener Tempera bese erii entation eceeg ince 3 77 bE eA 6k Se SER AA E RET E AEE NVT EE E EN AA RDC eRe TT a 3 78 Oona o POW eee terretictetestcu ce E 3 79 Zero and
90. Optional Equipment The Model 42i Low Source is available with the following options e Internal Zero Span and Sample Valves on page 9 1 e Permeation Dryer Assembly on page 9 2 e Teflon Particulate Filter on page 9 2 e Ozone Particulate Filter on page 9 2 e NO2 to NO Converters on page 9 3 e I O Expansion Board Assembly on page 9 3 e Terminal Block and Cable Kits on page 9 3 e Mounting Options on page 9 4 Inte rnal Ze ro S an With the zero span assembly option a source of span gas is connected to the P y op pan g and S ample Valves SPAN port and a source of zero air is connected to the ZERO port as shown in Figure 9 1 Zero and span gas should be supplied at atmospheric pressure It may be necessary to use an atmospheric dump bypass plumbing arrangement to accomplish this For more information refer to the Installation chapter If this option is p p installed refer to the Operation chapter for more information Thermo Fisher Scientific Model 42i Low Source Instruction Manual 9 1 Optional Equipment Permeation Dryer Assembly Flow Sensor Capillary wwe H Ozonator Oz Cleanser NO Zero Span Sample Cal Valve Option Teflon Particulate Filter Permeation Dryer Assembly Teflon Particulate Filter Ozone Particulate Filter 9 2 Model 427 Low Source Instruction Manual Zero TA NC Fa T Electronics NC Span d Reaction NO Mod
91. PMT Assembly Flow Switch Capillaries 2 Ammonia Scrubber Pump Thermistor Measurement F gp iee a Interface Board I O Expansion Power Supply LOW ff Board Optional F eee Ozonator Transformer Solenoid Motherboard Digital Tr Board Figure 7 2 Component Layout Thermo Fisher Scientific Model 42i Low Source Instruction Manual 7 7 Servicing Removing the Measurement Bench and Lowering the Partition Panel Removi ng te Phewieasiremenc bench can be removed andthe partition panel can be Measu rement Bench lowered to improve access to connectors and components Refer to the and Loweri ng the following steps when a procedure requires lowering the partition panel see et Figure 7 3 Partition Panel Pass Through REMOVE SCREWS Connectors Partition Panel Af Loosen Captive Screw Remov rew Remove Screw emove Screws Figure 7 3 Remove the Measurement Bench Screws 7 8 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Servicing Removing the Measurement Bench and Lowering the Partition Panel SLIDE BENCH OUT Figure 7 4 Slide Qut the Measurement Bench Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 9 Servicing Removing the Measurement Bench and Lowering the Partition Panel 7 10 LOWER PANEL A Model 42i Low Source Instruction Manual Bi 7 is af i hace Ae 4 a o Al tal ee le b T R a T i at Remove Hidden Screw
92. Pan Check spirn enna E AS 3 79 Zero and Span Auto Calibration ssssssessessssssssssesesseressesees 3 80 NO NO and NO Concentration ssssssssssssseseressereessreese 3 80 Thermo Fisher Scientific Thermo Fisher Scientific Chapter 4 Chapter 5 Contents Service ANA Uo LU Ree REED eT Ns fer neem Rene rn eet enon PTE 3 82 PMF V oltaee Adusien tsena a n tee Geeasvearenavan 3 83 Ranee Mode SECC seats ucts seevantdasinaapsdestincducelieeteabincereteanestee 3 83 Converter Set Temperaturi orestis ea R 3 84 Pressure Calibration a E 3 84 Input Board Calibrations a 3 87 Temperature CAUDA OMaria e a aaa 3 89 Analog Output Calbia tion ussiisa 3 90 Analog Input Calibration sssesssesessesesssessesesssessersssressresses 3 92 CV ZO MALO S a eroaa a 3 94 Extended Rin Seroren e E 3 94 DIOR OaE A A R 3 95 Display Piret Test assrernen AN 3 95 Restore User Defaults cceccceeeecccsseeccessccencesccesesceesescens 3 96 TAS yO Ul snes eet cht a A oaneoedetneeeeics 3 97 Set PASS WOE aiene a aa a 3 97 Lock Instrument enneren aae E 3 98 Change Passw Ord ienie n e E aye hes 3 98 Remove Password eonenni e E 3 99 Unlock Instameet ercran a E E 3 99 GaliDrati i aiscin a aaa 4 1 Eguipment Req tite ds 5 cis cscsialsssacutdevenntdetnsdatdus nce sioncowsuans 4 Pie Bee boy oa 0 em rene e iE E Te 4 CANDA Oise cash ede hst bs seabed ce stnct os sncert nat secert tedines hedeceticectacetatanst 4 2 Connecting the GPT Apparatus a scccscivecc
93. Receive low no gas 2400E 1 ppm set no gas value set no2 gas value set nox gas value set high no gas value set high no2 gas value set high nox gas value set low no gas value set low no2 gas value set low nox gas value These commands set the NO NO gt and NO span gas concentrations used by the auto calibration routine to value where value is a floating point representation of the gas concentration in current selected units The gas units are the same as those chosen by the user The example below sets the NO span gas concentration to 1234 ppm Send set no gas 1234 Receive set no gas 1234 ok no bkg nox bkg These commands report the current NO and NO backgrounds The example below reports that the NO background is 5 5 ppb Send no bkg Receive no bkg 5 5 ppb Model 427 Low Source Instruction Manual B 25 C Link Protocol Commands Keys Display set no bkg value set nox bkg value These commands are used to set NO and NO backgrounds to user defined values to value where value is a floating point representation of the background in current selected units The example below sets the NO background to 5 5 ppb Send Set no bkg 5 5 Receive set no bkg 5 5 ok pres cal This command reports the pressure recorded at the time of calibration The example below shows that the pressure at calibration is 185 5 mmHg Send pres cal Receive pres cal 185 5 mmHg set pres cal This command automatically sets the curren
94. S 42h Wert a N E E E E aa iews 1 3 installation siioni aaa 2 1 IT I A A oat E teen E E T A A E 2 1 Unpacking and Inspection sisisi a 2 1 Serap Proce GUNG acces ence ri o E OE 2 3 I Pa eee ae eee AE 2 5 Opera UON orsoni aaa ai 3 1 D p a EA E 3 2 Po REO S ae ose eece i itue ame 3 3 DOME K eye a E 3 4 Sofware QVC 11 GW sas re ae iT E E a E E E 3 4 PowerUp ocetna a n 3 6 PRIS Cee AEE EEI E A A A TT 3 6 Mar Meni e E EEE 3 7 FRANC VLC I a E E AE E E A ENE E E A 3 8 Snel Range Moderen a E err eee ee 3 8 Daalt Ringe IG ghee ek O 3 10 Auto Range Modeemit nea 3 11 CR UN ea a E Ee an 3 14 NON Ozan d NOS RADD E Sesionin 3 14 Det CUSO NERAN OS eis a E eee ermadsiaeetincuss 3 16 PV SCA Timerun na E aa 3 17 Calibration Factors Menu sessessseesssessserssssrsssersssersssessssersss 3 18 INOrand NO Back rounds escra a 3 19 NO NO and NO Coefficients ssosssseeeesssersssserresseeees 3 21 Calibration Pressure ssensossensseesserssserssseesssrossersssersssees 3 22 Calibrador Meni sa sist owes acostoe sd catnatessdeastiardeacasueaieudnetenesonseaien 3 23 Calibrate NO and NO Background eeeeeeseeeeeeeeeeeee 3 24 Calibrate NO NO3 and NO Coefficients 0 0 eee 3 25 Calibrate Pres SS cast os sta ants n a a 3 26 Zerolo pan ONEC ue rere RTE eee eer ee ere 3 26 Model 427 Low Source Instruction Manual v Contents vi Model 427 Low Source Instruction Manual Instrument Controls Menu si snsiscicancieaueticccenateeeieceess 3 30
95. Source Instruction Manual 3 11 Operation Range Menu 1Q00 ppb _ NO Concentration 200 ppb QO ppb a Sooo NO Analog Output y al OV 10V_ 1000 ppb Aj range NO Status Output 200 ppb 200 ppb OV range range Figure 3 6 Analog Output in Auto Range Mode By default in the auto range mode the analog outputs are arranged on the rear panel connector as shown in Figure 3 7 See Table 3 4 for channels and pin connections Auto range mode may be selected from the Single Dual Auto Select in the Service Menu later in this chapter 3 12 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Range Menu 33 ANALOG VOLTAGE OUTPUTS 37 elelelslelelslelelelslelel se s 2 oooo000000000000000 Figure 3 7 Pin Out of Rear Panel Connector in Auto Range Mode Table 3 4 Default Analog Outputs in Auto Range Mode Channel Pin Description 1 14 NO Analog Output 2 33 NO Analog Output 3 15 NO Analog Output 4 34 Range Status half scale high range zero scale low range 5 17 None 6 36 None Ground 16 18 19 35 37 Signal Ground Note All channels are user definable If any customization has been made to the analog output configuration the default selections may not apply Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 13 Operation Range Menu Gas Units NO NO and NO Ranges 3 14 Model 42i Low
96. Teti eessen E E E 7 30 Analog Outp t Adj stMe nteu crreien esaa T32 Pressure Transducer Assembly Replacement c ceeeeees 7 33 Pressure Transducer Calibration cceesseeeeeseeeeeenneeeeeeees 7 35 Temperature Control Board Replacement eeeseeeeeeeee 7 37 Ambient Temperature Calibration vessscecsestoteinsesdedeassiserceness 7 37 Fuse RCP ACS MG IIE rnatina i Senceuctgnne 7 39 Scrubber Place MeN i acsenay sic tend A nator osetia 7 39 I O Expansion Board Optional Replacement 06 7 40 Digital Output Board Replacement eee eeeeeeeeseeeeneeeeees 7 42 Motherboard Replacemie iiaeaa a anseee 7 42 Measurement Interface Board Replacement seeeeeeeeees 7 43 Thermo Fisher Scientific Thermo Fisher Scientific Chapter 8 Contents Front Panel Board Replacement ceesseceeeeseeeeeeneeeeenees 7 45 LCD Module Replacemic iat eracarri nn E convene aires 7 46 Service LOCION eiivor peeke e TE ETENEE 7 47 System DeScription ccscscsessssssssssssssesssseessssseesesssseersssetareees 8 1 FAN AS EE E te A A E A T 8 1 NO t6 NO Converter eron e NE ENE 8 2 Mode Solenoid raen a E EO 8 2 Redction C ham DE oreismensenosia iraa in EEE 8 2 Opica FI orsoni E A 8 3 Pressure Fransducei ocos A 8 3 OZONO a E choeed as aaareokahoh ness 8 3 Ozonator Flow Switch sseni iaa ie NE 8 3 Photomaltiplier TUDE vroren a a E 8 3 Photomultiplier Tube Co letnrenienrecnm ranana 8 3 DUDA reg EE A AEE N
97. ach other Eight solenoid driver outputs open collector are provided along with a corresponding 24VDC supply pin on the connector 8 8 Model 427 Low Source Instruction Manual Thermo Fisher Scientific I O Expansion Board Optional Front Panel Connector Board I O Components Analog Voltage Outputs Thermo Fisher Scientific System Description I O Components The I O expansion board connects to the motherboard and adds the capability to input external analog voltage inputs and to output analog currents via a connector located on the rear panel of the instrument It contains local power supplies a DC DC isolator supply a sub processor and analog circuits Eight analog voltage inputs are provided with an input voltage range of OV to 1OVDC Six current outputs are provided with a normal operating range of 0 to 20 mA The front panel connector board interfaces between the motherboard and the front panel mounted function key panel and Graphics display It serves as central location to tie the three connectors required for the function key panel the graphics display control lines and the graphics display backlight to a single ribbon cable extending back to the motherboard This board also includes signal buffers for the graphics display control signals and a high voltage power supply for the graphics display backlight External I O is driven from a generic bus that is capable of controlling the following devices e Analog output
98. ach submenu and screen in detail Refer to the appropriate sections for more information 3 4 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Power up Screen Self Test Screen Run Screen Main Menu Range averaging Calibration Calibration ns tument Diagnostics Alarms Service Password Time Factors Controls Gas Units Avg Time NO Bkg Cal NO Bkg Ozonator Program Version Alarms Detected PMT Voltage Adj Set Password NO Range NO Bkg Cal NO Bkg PMT Supply Voltages Internal Temp Range Mode Select Lock Instrument NO Range NO Coef Cal NO Coef Auto Man Mode Temps Chamber Temp Conv Set Temp Change Password NO Range NO Coef Cal NO Coef Datalogging Settings Pressure Cooler Temp Pressure Cal Remove Password Set Custom Ranges NO Coef Cal NO Coef Comm Settings Flow Conv Temp Input Bd Cal Unlock Instrument Cal Pressure Cal Pressure 1 O Config Analog Input Readings pressure Temp Cal Gas Units Hi Avg Time Reset User Cal Defaults Zero Span Check Temp Compensation Analog Input Voltages QO zonator Flow Analog Output Cal Hi NO Range Lo Avg Time Pres Compensation Digital Inputs Zero Check Analog Input Cal Lo NO Range NO Bkg Cal NO Bkg Screen Contrast Relay States Span Check Ozonator Safety Hi NO Range NO Bkg Cal NO Bkg Service Mode Test Analog Outputs Zero Autocal Extended Ranges L
99. all amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect plumbing from the pressure transducer assembly Note the P g P y plumbing connections to facilitate reconnection 3 Disconnect the pressure transducer cable Retaining Screws 2 Pressure Transducer Assembly Figure 7 18 Replacing the Pressure Transducer 4 Remove the two pressure transducer assembly retaining screws and remove the pressure transducer assembly 5 To install the pressure transducer assembly follow previous steps in reverse 6 Calibrate the pressure transducer Refer to the Pressure Transducer Calibration procedure that follows Thermo Fisher Scientific Pressure Transducer Thermo Fisher Scientific Calibration Servicing Pressure Transducer Calibration Use the following procedure to calibrate the pressure transducer Equipment Required Vacuum pump WARNING The service procedures in this manual are restricted to qualified service representatives a If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired a Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a
100. alue set internal temp alarm max value These commands set the internal temperature alarm minimum and maximum values to value where value is a floating point number representing internal temperature alarm limits in degrees C The example below sets the internal temperature alarm maximum value to 35 0 C Send set internal temp alarm max 35 Receive set internal temp alarm max 35 ok alarm pressure min alarm pressure max These commands report the pressure alarm minimum and maximum value current settings The example below reports that the pressure alarm minimum value is 150 mmHg Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Alarms Send pressure alarm min Receive pressure alarm min 150 mmHg set alarm pressure min value set alarm pressure max value These commands set the pressure alarm minimum and maximum values to value where value is a floating point number representing pressure alarm limits in millimeters of mercury The example below sets the pressure alarm maximum value to 290 mmHg Send set alarm pressure max 290 Receive set alarm pressure max 290 ok alarm trig conc no alarm trig conc no2 alarm trig conc nox These commands report the NO NO5 and NO concentrations alarm trigger action for minimum alarm current setting to either floor or ceiling The example below shows the NO concentration minimum alarm trigger to ceiling according to Table B 3 Send alarm trig conc no
101. alue String Value Source C Link Protocol Commands Record Layout Definition parse a time specifier 2 bytes parse a date specifier 3 bytes ignore one 8 bit character 1 byte parse a 24 bit floating point number 3 bytes n x parse a 24 bit floating point number 3 bytes N x parse a 32 bit floating point number 4 bytes hmo He ct parse an 8 bit signed number 1 byte parse an 8 bit unsigned number 1 byte parse a 16 bit signed number 2 bytes parse a 16 bit unsigned number 2 bytes parse a 24 bit signed number 3 bytes parse a 24 bit unsigned number 3 bytes parse a 32 bit signed number 4 bytes parse a 32 bit unsigned number 4 bytes m e z 3 Z 5 Q AQ l a a a a a a There is an optional single digit d which may follow any of the numeric fields which indicates that after the field has been parsed out the resulting value is to be divided by 104d Thus the 16 bit field 0xFFC6 would be interpreted with the format specifier n3 as the number 0 058 The subsequent lines in the ERec Layout response describe the appearance of the full panel The full instrument panel as it appears on the screen has two columns of lines Each line is composed of three major components 1 a text field 2 a value field and 3 a button None of these three components is required The text field contains statically displayed text The value field displays values which are parsed out of the respo
102. and negative 3 3 Each voltage value is separated by a space Send diag volt iob Receive diag volt iob 24 1 4 9 3 2 3 2 clr records This command will clear all long and short records that have been saved Send clear records Receive clear records ok set clr lrecs set clr srecs These commands will clear only the long records or only the short records that have been saved The example below clears short records Send set clr srecs Receive set clr srecs ok list din list dout These commands report the current selection for the digital outputs in the format Output no Index number variable name active state The active state for digital outputs is open or closed The active state for digital inputs is high or low Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Datalogging Send list dout Receive list dout output index variable state 1 35 CONC ALARM open 3 4 UNITS open 4 11 GEN ALARM closed 7 7 NO MODE open 8 8 NOX MODE open list lrec list srec list stream list sp These commands report the list of current selections for long record logging data short record logging data streaming data output or the scratch pad sp list The example below shows the list for streaming data output Send list stream Receive list stream field index variable x xX time 1 1 no 2 2 no2 3 3 nox 4 18 intt 5 25 pres er xy Ir xy st xy 041 51 Reply termination format se
103. and press to calibrate The screen displays the frequency at GAIN 1 3 Make a note of the FREQ value displayed at GAIN 1 then press or to change the GAIN to 100 Thermo Fisher Scientific Servicing DC Power Supply Replacement 4 At the GAIN 100 screen use Es 4 toincrement the D A counts until the FREQ value matches or is slightly above within 50 counts the value noted in the previous step 5 Press to store the value The screen flashes Calculating Please Wait and Done Values Saved messages DC Power Supply Use the following procedure to replace the DC power supply Figure 7 16 Replacement Equipment Required DC power supply Philips screwdriver amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a Equipment Damage Some internal components can be damaged by small 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect all the power supply electrical connections Note connector locations to facilitate re connection Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 29 Servicing Analog Output Testing 3 Loosen the captive screw securing the power supply to the chassis plate and lift out the power supply Power Supply lt i Retaining Screws 4 BOTTOM VIEW Captive Screw Figure 7 16 Replacing the DC Power Supply 4 Turn the power supply upside down and remove
104. asoeeetadasshs B 20 Stream ime V AGS rera a r AR B 23 AAE RANDE iaa e E S B 29 Extended Ringe iaa E E E E B 29 Goe E a E T EA E E T T B 32 Reply Termination Formats sesercisinie ari tst E E B 38 Analog Current Output Range Values ssscseseeeesseessseeseressresssressressrreses B 40 Analog Voltage Output Range Values ee eeeeeeseeceeseeeeseeeeeseeeeseeeeeaees B 40 Default Output ASsionMment sonia a B 42 Read Coils for 42r LOW S0UTCE menion ou ro nEn na a ENET OEREN C 8 Read Registers tor 421 LOW S0UTCE rocon E EEN C 9 Wirte Cols fOr A 21 LOW SOUTE onerare T a C 10 Operating Status for Model 42i Low Source sssssseseessseesseresssesssrsssressees D 7 Error Status for Model 42i Low Source sssssssssessseseesssrssseresssressesresssresses D 7 Thermo Fishe Scientific Model 42i Low Source Instruction Manual xiii Tables XIV Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific About This Manual This manual provides information about operating maintaining and servicing the analyzer It also contains important alerts to ensure safe operation and prevent equipment damage The manual is organized into the following chapters and appendices to provide direct access to specific operation and service information e Chapter 1 Introduction provides an overview of product features describes the principles of operation and lists the specifications e Chapter 2 Installation describes how
105. ated from Fyo X NO NO logs NO STD Fno Fo Fp Where 4 5 NO oyr Diluted NO concentration at the output manifold ppm e NOsrp No feed concentration Fyo No flow e Fo Ozone flow e Fp Dilution flow Allow the analyzer to sample the NO calibration gas until the NO NO and NO readings stabilize When the responses stabilize from the Main Menu choose Calibration gt Calibrate NO Coefficient The NO line of the Calibrate NO screen displays the current NO concentration The SPAN CONC line of the display is where you enter the NO calibration gas concentration Use and gt to move the cursor left and right and use Jand to increment and decrement each digit Press to calculate and save the new NO coefficient based on the Sp entered span concentration Model 42i Low Source Instruction Manual 4 7 Calibration Calibration The NO recorder response will equal NO Recorder Response scale ee x 100 Zno Where URL Nominal upper range limit of the NO channel ppm Record the NO our concentration and the NO response as indicated by the recorder response 7 Press to return to the Calibration menu and choose Calibrate NO Coefficient 8 Verify that the NO calibration gas concentration is the same as the NO calibration gas concentration plus any known NO impurity The NO line of the Calibrate NO screen displays the current NO concentration The
106. atest instrument stability The sample and ozone flow capillaries and a thermistor sensor are also housed in on the reaction chamber assembly The optical filter housed in the reaction chamber limits the spectral region viewed by the detector and eliminates possible interferences due to other chemiluminescent reactions The pressure transducer measures the reaction chamber pressure The Ozonator generates the necessary ozone concentration required for the chemiluminescent reaction The ozone reacts with the NO in the ambient air sample to produce the electronically excited NO molecules The ozonator flow switch located at the ozonator inlet completes an electrical safety circuit when air flows through the sensor to the ozonator If airflow stops the flow sensor breaks the electrical circuit to the ozonator and shuts it off to prevent the ozonator from overheating The Photomultiplier tube PMT provides the infrared sensitivity required to detect the NO luminescence resulting from the reaction of the ozone with the ambient air sample Optical energy from the reaction is converted to an electrical signal by the PMT and sent to the input board that transmits it to the processor The thermoelectric PMT cooler reduces the PMT temperature to approximately 3 C to minimize dark current and increase instrument sensitivity The cooler helps to increase zero and span stability over a wide ambient temperature range The cooler housing also shiel
107. ature to prevent contact with heated components 3 Disconnect plumbing at converter inlet and outlet 4 Disconnect thermocouple leads and heater connector from temperature control board 5 Loosen the four captive screws holding converter housing to floor plate Top Housing Assembly Moly Converter Assembly heater Assembly Thermocouple Leads lt gt lt ____and Heater Connector Bottom Housing Assembly Captive Screws 4 Figure 7 12 NO to NO Moly Converter Assembly 6 Remove the six screws holding the top housing assembly to the bottom half Model 427 Low Source Instruction Manual Thermo Fisher Scientific Solenoid Valve Replacement Thermo Fisher Scientific Servicing solenoid Valve Replacement 7 Remove the converter cartridge heater assembly from the bottom housing assembly 8 Loosen the heater clamp pry heater apart no wider than necessary and remove the converter cartridge noting the proper orientation of heater wires and thermocouple probe 9 To replace converter follow previous steps in reverse Note Be sure to wrap the O3 converter tube snugly around the heater Use the following procedure to replace the solenoid valve Figure 7 13 Equipment Required Solenoid valve Wrench 5 16 inch Philips screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling an
108. atures 320 x 240 graphics display Menu driven software Field programmable ranges User selectable single dual auto range modes Multiple user defined analog outputs Analog input options High sensitivity Fast response time Linearity through all ranges Independent NO NO NO ranges Replaceable NO converter cartridge User selectable digital input output capabilities Standard communications features include RS232 485 and Ethernet C Link MODBUS and streaming data protocols For details of the analyzer s principle of operation and product specifications see the following topics Principle of Operation on page 1 2 describes the principles by which your analyzer operates 42i Low Source Instruction Manual 1 1 Introduction Principle of Operation Principle of Operation 1 2 A i Low Source Instruction Manual e Specifications on page 1 3 is a list of the analyzer s performance specifications Thermo Fisher Scientific is pleased to supply this chemiluminescence NO NO NO analyzer We are committed to the manufacture of instruments exhibiting high standards of quality performance and workmanship Service personnel are available for assistance with any questions or problems that may arise in the use of this analyzer For more information on servicing see Chapter 7 Servicing The Model 427 Low Source operates on the principle that nitric oxide NO and ozone O3 react to produce a characteristi
109. aximum Value Model 42i Low Source Instruction Manual The Minimum Value screen is used to edit the zero 0 to full scale 100 value in percentages for the selected analog output channel See Table 3 7 for a list of choices The minimum and maximum output value screens function the same way The example below shows the set minimum value screen e Inthe Main Menu choose Instrument Controls gt IO Configuration gt Analog Output Config gt Select Channel gt Set Minimum or Maximum Value e Use t and to increment or decrement the numeric value e Press to validate and save the new minimum value ts CHOHGE VOLUE SAVE Table 3 7 Analog Output Zero to Full Scale Table Output Zero Value Full Scale 100 Value NO Zero 0 Range Setting NO Zero 0 Range Setting NO Zero 0 Range Setting LO NO Zero 0 Range Setting LO NO Zero 0 Range Setting LO NO Zero 0 Range Setting HI NO Zero 0 Range Setting HI NO Zero 0 Range Setting HI NO Zero 0 Range Setting Range Status NO Recommend not to change the setting for this output Internal Temp User set alarm min value User set alarm max value Chamber Temp User set alarm min value User set alarm max value Cooler Temp User set alarm min value User set alarm max value Thermo Fisher Scientific Choose Signal to Output Thermo Fisher Scientific Table 3 7 Analog Output Zero to Full Scale Table Output Zero Value NO Converter Temp User set alarm min
110. before opening the cylinder valve b thoroughly flushing the regulator and delivery system with NO after opening the cylinder valve c not removing the regulator from the cylinder between calibrations unless absolutely necessary Thermo Fisher Scientific Model 427 Low Source Instruction Manual 4 3 Calibration Calibration 4 Connect the analyzer sample bulkhead input to the output of the GPT system F C FLOW CONTROLLER F M FLOW METER F C F M ZERO AIR MIXING CHAMBER r H n pa 6 5 REACTION CHAMBER FINO SH F C F M len x VALVE VENT NO N gt STD FT VENT a F E TO ANALYZER Figure 4 1 GPT System Dynamic Parameter Use the following definitions for the remainder of this chapter Specifications for Gas Phase Titrator Pp Dynamic parameter specification to ensure complete reaction of the available 03 ppm min NOlec NO concentration in the reaction chamber ppm tp Residence time of the reactant gases in the reaction chamber min NO etp Concentration of the undiluted NO standard ppm Fig NO flow rate sccm Fo Q3 generator air flow rate sccm Vac Volume of the reaction chamber cc pys Analyzer demand plus 10 to 50 excess 4 4 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Determining GPT System Flow Thermo Fisher Scientific Conditions Calibration Calibration The O3 generator ozonator airflow rate and the NO flow rate must be adju
111. between the low level processors and the high level processor Every tenth of a second the frequency counters analog I O and digital I O are read and written to by the low level processor The counters are accumulated over the past second and the analog inputs are averaged over that second The high level processor polls the low level processors once per second to exchange the measurement and control data Signals are gathered from the low level processors once per second and then processed by the high level processor to produce the final measurement values The one second accumulated counts representing the NO NO are accumulated and reported for the user specified averaging time If this averaging time is greater than ten seconds the measurement is reported Thermo Fisher Scientific Measurement Calculations Output Communication Thermo Fisher Scientific System Description software every 10 seconds The one second average of the other analog inputs are reported directly no additional signal conditioning is performed by the high level processor In auto mode every ten seconds the NO NO solenoid switches and the processor waits three seconds for the reaction chamber to flush and stabilize After those three seconds it accumulates the signal counts for seven seconds before again switching the solenoid The calculation of the NO and NO concentrations is lengthy and uses the high level processor to provide the most accurate
112. c luminescence with an intensity linearly proportional to the NO concentration Infrared light emission results when electronically excited NO molecules decay to lower energy states Specifically NO 0 gt NO 0 ho Nitrogen dioxide NO2 must first be transformed into NO before it can be measured using the chemiluminescent reaction NO is converted to NO by a stainless steel NO to NO converter heated to about 625 C the optional molybdenum converter is heated to 325 C The ambient air sample is drawn into the Model 427 Low Source through the sample bulkhead as shown in Figure 1 1 The sample flows through a capillary and then to the mode solenoid valve The solenoid valve routes the sample either straight to the reaction chamber NO mode or through the NO to NO converter and then to the reaction chamber NO mode A flow sensor prior to the reaction chamber measures the sample flow Dry air enters the Model 427 Low Source through the dry air bulkhead passes through a flow switch and then through a silent discharge ozonator The ozonator generates the ozone needed for the chemiluminescent reaction At the reaction chamber the ozone reacts with the NO in the sample to produce excited NO molecules A photomultiplier tube PMT housed in a thermoelectric cooler detects the luminescence generated during this reaction From the reaction chamber the exhaust travels through the ozone O3 converter to the pump and is released thr
113. ce Instruction Manual Thermo Fisher Scientific Operation Calibration Menu Next Time The Next Time screen is used to view and set the next zero span check date and time Once the initial zero span check is performed the date and time of the next zero span check is calculated and displayed e Inthe Main Menu choose Calibration gt Zero Span Check gt Next Date Time e Use gt and to move and change the value of the date and time e Press to accept a change Period Hours The Zero Span Period Hours screen defines the period or interval between zero span checks Periods between 0 and 999 hours are acceptable To turn the zero span check off set the period to 0 e Inthe Main Menu choose Calibration gt Zero Span Check gt Period Hours e Use and to increment and decrement the numeric value e Press to save the period Te fea HEE e HERVE DUP eLm Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 27 Operation Calibration Menu Zero Span Purge Duration The Zero Duration Minutes screen defines how long zero air is sampled by Minutes the instrument The span and purge duration screens look and function the same way as the zero duration screen and are used to set how long the span gas and sample gas are sampled by the instrument Durations between 0 and 60 minutes are acceptable Each time a zero span check occurs the zero check is done first followed by the span ch
114. ce Menu Input Frequency Display The Frequency Display screen is used to manually adjust the input board gain his may be used as a troubleshooting tool for the input board The gain setting and test mode are reset upon exiting this screen e Inthe Main Menu choose Service gt Input Board Calibration gt Frequency Disp e Press to leave warning screen Use jand 4 to toggle the test signal and bypass the PMT e Use and gt to change the gain between 1 10 and 100 TS HALTED INSIDE e CHE GAIN Tempe rature Calibration The Temperature calibration screen allows the user to view and set the ambient temperature sensor calibration The temperature calibration screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter WARNING This adjustment should only be performed by an instrument service technician e Inthe Main Menu choose Service gt Temperature Calibration e Use lt gt and to move and change the value e Press to save set to value as actual value Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 89 Operation Service Menu t CHAHGE VALUE SAY Analog Output Calibration The Analog Output Calibration menu is a selection of 6 voltage channels and 6 current channels if I O expansion board option is installed to calibrate and allows the user to select
115. ced to the instrument The Model 422 Low Source should give identical responses to the test gases whether they are introduced via the sample port or the zero or span ports If not the plumbing and or valves should be serviced The following procedure discusses calibration of the Model 427 Low Source analyzer using the gas phase titrator and zero gas generator previously described It is suggested that a calibration curve have at least seven points between the zero and full scale NO concentrations Although the seven point curve is optional two of whatever number of points is chosen should be located at the zero and 90 levels and the remaining points equally spaced between these values Connecting the GPT Use the following procedure to connect the GPT apparatus Apparatus Assemble a dynamic calibration system such as the one shown in Figure 4 1 2 Ensure that all flowmeters are calibrated under the conditions of use against a reliable standard such as a soap bubble meter or wet test meter All volumetric flow rates should be corrected to 25 C and 760 mm Hg 3 Precautions should be taken to remove O and other contaminants from the NO pressure regulator and delivery system prior to the start of calibration to avoid any conversion of NO to NO3 Failure to do so can cause significant errors in calibration This problem can be minimized by a carefully evacuating the regulator after the regulator has been connected to the cylinder and
116. cessary If using sample particulate filter make sure it is not blocked Disconnect sample particulate filter from the sample bulkhead if flow increases replace the filter Thermo Fisher Scientific Thermo Fisher Scientific Troubleshooting Troubleshooting Guides Table 6 2 Troubleshooting Alarm Messages continued Alarm Message Possible Cause Action Alarm Qzonator Flow Ozone flow Low Check ozone capillary 008 inch ID for blockage Replace as necessary Alarm NO NO2 NOy Concentration has exceeded range Check to insure range Conc limit corresponds with expected value If not select proper range Concentration low Check user defined low set point set to zero Model 427 Low Source Instruction Manual 6 5 Troubleshooting Board Level Connection Diagrams Board Level Figure 6 1 and Figure 6 2 are board level connection diagrams for the Connection DI agrams common electronics and measurement system These illustrations can be used along with the connector pin descriptions in able 6 3 through Table 6 9 to troubleshoot board level faults VOEXPANSION BOARD EXPANSION I O J1 25 Pin TOMEASUREMENT SYSTEM DIGITAL n OUTPUTS 37 Pin 2 RS232 RS485 FANT 16 Pin LCD 9 Pin q PANEL DISPLAY BAD MM RS232 RS485 o pi 34 Pin 4 Pin 10 BASE T B i KEY PANEL 8 Pin 8 Pin EXPANSION RS485 To Eun SPARE DATA ANALOG OUTPUTS DIGITAL INPUTS 37 Pin IPJ8 3 Pin 3 Pin 3 Pin REAR PANEL AC AC INPUT
117. choice The Commit Content screen is used to save the selected output signal that is tied to the selected field item For more information about selecting the analog output signal group choices see Select Content above e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Commit Content Thermo Fisher Scientific Operation Instrument Controls Menu e Press to commit changes to selected record format and erase record log file data e Press gt to confirm changes Reset to Default Content The Reset to Default Content screen is used to reset all of the datalogging field items to default values For more information about selecting the analog output signal group choices see Select Content above e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Reset to Default Content e Press to reset selected record format and erase record log file data e Press gt to reset Configure Datalogging The Configure Datalogging menu deals with datalogging configuration for the currently selected record type Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 39 Operation Instrument Controls Menu e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Configure Datalogging Logging Period Min The Logging Period Min screen is used to select the logging period in minutes for the record format srec or l
118. choices include all analog outputs 6 voltage channels and 6 current channels if the I O expansion board option is installed e Inthe Main Menu choose Diagnostics gt Test Analog Outputs 3 70 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Set Analog Outputs Thermo Fisher Scientific Operation Diagnostics Menu The Set Analog Outputs screen contains three choices Set to full scale set to zero or reset to normal Full scale sets the analog outputs to the full scale voltage zero sets the analog outputs to 0 volts and normal operation The example below shows the selected output state ALL is set to normal e Inthe Main Menu choose Diagnostics gt Test Analog Outputs gt ALL Voltage Channel 1 6 or Current Channel 1 6 e Use t and to move the cursor up and down e Press to select a choice Model 42i Low Source Instruction Manual 3 71 Operation Diagnostics Menu Instrument Configuration The Instrument Configuration screen displays information on the hardware configuration of the instrument Note If the analyzer is in service mode pressing on the item will toggle it yes or no a e Inthe Main Menu choose Diagnostics gt Instrument Configuration e Press to toggle instrument configuration in service mode only Contact Information The Contact Information screen displays the customer service information e Inthe Main Menu choose Diagnostics gt Contact I
119. creates a selection list of twelve Code nn options The number of the user selection is used to create the output command Mode 6 12 13x local remote service service 0 1 Tset mode s n This is a line which has a title of Mode and value taken from the sixth field of the data response There is a bitfield extraction of bits 12 through 13 from the source the value type is not important here because the value is being translated to an output string Once the bits have been extracted they are shifted down to the bit zero position Thus the possible values of this example will be 0 through 3 The translation list shows the words which correspond to each input value the zeroth value appearing first 0 gt local 1 gt remote etc The selection list shows that only the first two values in this case are to be shown to the user when the button is pressed The T button indicates full translation input code to string and user selection number to output string xC This is a line that starts a new column the xC or L Comp 6 11x off on Tset temp comp s n This shows that the bitfield end the second part of a bitfield specification is optional The bitfield will be one bit long starting in this case at the eleventh bit Background 7f 8Bd ddd set 03 bkg s n This shows the use of indirect precision specifiers for floating point displays The background value is taken from the 7th element and the precision specifier
120. d set save params commands stores parameters in FLASH It is important that each time instrument parameters are changed that this command be sent If changes are not saved they will be lost in the event of a power failure Thermo Fisher Scientific Thermo Fisher Scientific Command addr dns addr gw addr ip addr nm alarm chamber temp max alarm chamber temp min alarm conc no max alarm conc no min alarm conc no2 min alarm conc no2 max alarm conc nox max alarm conc nox min alarm converter temp max alarm converter temp min alarm cooler temp max alarm cooler temp min alarm internal temp max alarm internal temp min alarm pressure max alarm pressure min alarm trig conc no alarm trig conc no2 alarm trig conc nox analog iout range analog vin analog vout range C Link Protocol Commands Commands Table B 1 lists the 427 Low Source C Link protocol commands The interface will respond to the command strings outlined below Table B 1 C Link Protocol Commands Description Reports sets domain name server address Reports sets default gateway address Reports sets IP address Reports sets netmask address Reports sets chamber temperature alarm maximum value Reports sets chamber temperature alarm minimum value Reports sets current NO concentration alarm maximum value Reports sets current NO concentration alarm minimum value Reports sets current NO concentration alarm maximum value Reports sets
121. del 42i Low Source Instruction Manual 5 3 Preventive Maintenance Thermoelectric Cooler Fins Inspection and Cleaning Thermoelectric Use the following procedure to inspect and clean the thermoelectric cooler Cooler Fins s Inspection and Cleaning amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter Equipment Damage Some internal components can be damaged by small 1 Turn the instrument off and unplug the power cord 2 Remove the instrument cover 3 Locate the PMT cooler Figure 7 2 and Figure 7 4 in the Servicing chapter 4 Blow off the cooler fins using clean pressurized air It may be more convenient to vacuum the cooler fins In either case make sure that any particulate accumulation between the fins has been removed 5 If necessary use a small brush to remove residual particulate accumulation 6 Replace the cover 7 Connect the power cord and turn the instrument ON Fan Fi Ite rs Inspection Use the following procedure to inspect and clean the fan filters and Cleaning 1 Remove the two fan guards from the fans and remove the filters 2 Flush the filters with warm water and let dry a clean oil free purge will help the drying process or blow the filters clean with compressed air 5 4 Model 427 Low Source Instruction Manual Therm
122. dings are updated every second in the service mode compared with every 10 seconds in the Diagnostics menu The Technical Support Department at Thermo Fisher Scientific can also be consulted in the event of problems See Service Locations at the end of this chapter for contact information In any correspondence with the factory please note both the serial number and program number of the instrument This chapter provides the following troubleshooting and service support information e Safety Precautions on page 6 1 e Troubleshooting Guides on page 6 2 e Board Level Connection Diagrams on page 6 6 e Connector Pin Descriptions on page 6 8 e Service Locations on page 6 22 Safety Precautions Read the safety precautions in the Preface and the Servicing chapter before performing any actions listed in this chapter Thermo Fisher Scientific Model 427 Low Source Instruction Manual 6 1 Troubleshooting Troubleshooting Guides 6 2 Troubleshooting Guides Model 427 Low Source Instruction Manual The troubleshooting guides presented in this chapter are designed to help isolate and identify instrument problems Table 6 1 provides general troubleshooting information and indicates the checks that you should perform if you experience an instrument problem Table 6 2 lists all the alarm messages you may see on the graphics display and provides recommendations about how to resolve the alarm conditi
123. dr ip and addr nm parameters are not used a Send set dhcp on Receive set dhcp on ok format This command reports the current reply termination format The example below shows that the reply format is 00 which means reply with no checksum according to Table B 9 Send format Receive format 00 set format format This command sets the reply termination format where format is set according to Table B 9 The example below sets the reply termination format to checksum Send set format 01 Receive set format 01 ok Model 427 Low Source Instruction Manual B 37 C Link Protocol Commands Communications Configuration B 38 Model 42i Low Source Instruction Manual Table B 9 Reply Termination Formats Format Reply Termination 00 lt CR gt 01 lt NL gt sum xxxx lt CR gt where xxxx 4 hexadecimal digits that represent the sum of all the characters bytes in the message host name This command reports the host name string Send host name Receive host name ISERIES set host name string This command sets the host name string where string is 1 13 alphanumeric characters Send set host name analyzero1 Receive set host name analyzer01 ok instr name This command reports the instrument name Send instr name Receive instr name NO NO2 NOx Analyzer NO NO2 NOx Analyzer instrument id This command reports the instrument id Send instrument id Receive instrument id 42 set instrument id value This
124. ds the PMT from external electrical and optical interferences The vacuum pump draws the reacted gasses out of the reaction chamber The sample capillary along with the pump is used to control flow in the sample line Model 427 Low Source Instruction Manual 8 3 System Description Ammonia Scrubber 8 4 Dry Air Capillary Ammonia Scrubber Software Instrument Control Monitoring Signals Model 427 Low Source Instruction Manual The dry air capillary along with the pump is used to control flow in the dry air line The ammonia scrubber is mounted internally and removes ammonia from the sample air The processor software tasks are organized into four areas e Instrument Control on page 8 4 e Monitoring Signals on page 8 4 e Measurement Calculations on page 8 5 e Output Communication on page 8 5 Low level embedded processors are used to control the various functions on the boards such as analog and digital I O and heater control These processors are controlled over a serial interface with a single high level processor that also controls the front panel user interface The low level processors all run a common piece of firmware that is bundled with the high level firmware and loaded on power up if a different version is detected Each board has a specific address that is used to identify to the firmware what functions are supported on that board This address is also used for the communications
125. e set format format command y 0 1 2 Output format see set erec Irec srec format format command These commands report the last long and short records stored or the dynamic data record In the example below the command requests a long record with no checksum in ASCII format with text For details on how to decode the flag fields within these records see Figure B 1 in the flags command Send lr01 Receive lr0o1 12 31 02 22 03 flags 54089100 no 8413E 1 nox 8485E 1 lono 6471E 1 lonox 6527E 1 pres 130 9 pmtt 53 2 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 115 Model 427 Low Source Instruction Manual B 17 C Link Protocol Commands Datalogging B 18 Model 427 Low Source Instruction Manual erec This command returns a brief description of the main operating conditions at the time the command is issued i e dynamic data The example below shows a typical response The format is defined by the current settings of format and erec format commands For details on how to decode the flag fields within these records see Figure B 1 in the flags command Send erec RECEIVES rec 10 11 04 06 05 flags DDO08000 no 0 000 nox 0 000 no2 0 000 1 lono 147 500 lonox 0 000 lono2 0 000 1 pmtv 805 491 tempal 1 pres 172 278 pcal 150 000 smplf 0 000 ozonf 0 050 hiavgtime 10 loavgtime 10 nobkg 0 000 noxbkg 0 000 nocoef 1 000 noxcoef 1 000 no2coef 1 000 lonocoef 1 000 lonoxcoef 1 000 lono2coef
126. e Flow Chamber bye Sensor rp a V d 0y Ey oar Ped Filter NO Converter i NOx Mode Pressure Exhaust Transducer Oz Converter Pump Figure 9 1 Flow Diagram Zero Span Option The permeation dryer minimizes routine maintenance procedures by providing a continuous stream of dry air to the ozonator using the selective water permeation characteristics of the dryer With the permeation dryer option it is not necessary to constantly replenish the ozonator air drying column as in the standard instrument If this option is installed refer to the Operation chapter for more information A 5 10 micron pore size two inch diameter Teflon element is available for the Model 42i Low Source This filter should be installed just prior to the SAMPLE bulkhead When using a filter all calibrations and span checks must be performed through the filter The ozone particulate filter minimizes the potential for contamination of the ozonator by trapping any particulate matter before passing through the ozonator Thermo Fisher Scientific Optional Equipment NOQ2 to NO Converters N 0 to NO Converters The Model 42i Low Source includes a Molybdenum NO gt to NO converter as standard equipment A stainless steel converter is available as an option I 0 Expansion Board The1 0 expansion board connects to the motherboard and adds the Assembly capability to input external analog voltage inputs and to output
127. e The PMT voltage adjustment screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in this chapter WARNING This adjustment should only be performed by an instrument service technician a e Inthe Main Menu choose Service gt PMT Voltage Adjustment e Use and to increment or decrement the PMT counts e Press to save the new PMT voltage Range Mode Select The Range Mode Select screen is used to switch between the various range modes single dual and auto range The range mode select screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in this chapter e Inthe Main Menu choose Service gt Range Mode Select e Use and to scroll through a list of choices e Press to save the new range mode Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 83 Operation Service Menu Co nverter Set Temperatu re The Converter Set Temperature screen is used to change the converter set temperature The converter set temperature reading is updated every second The converter set temperature screen is visible only when the instrument is in service mode For more information on the service mode cc bb e e e see Service Mode earlier in this chapter WARNING This adjustment should only be performed by an instrument service technician
128. e 0xAB hex checksum will be represented by the two characters A amp B The checksum is referred to as lt BCC gt throughout this document The following commands are supported by the Geysitech protocol e Instrument Control Command ST e Data Sampling Data Query Command DA There are three control commands supported by the Geysitech protocol This lt control command gt is a single letter which triggers an action in the instrument These commands are active only when service mode is inactive and the zero span option is present Command N switches the instrument gas mode to Zero mode Command K switches the instrument gas mode to Span mode Command M switches the instrument gas mode to Sample mode The following are the different acceptable formats of the ST command lt STX gt ST lt address gt lt control command gt lt ETX gt lt BCC gt OR lt STX gt ST lt address gt lt control command gt lt CR gt OR lt STX gt ST lt address gt lt SP gt lt control command gt lt CR gt OR lt STX gt ST lt address gt lt SP gt lt control command gt lt ETX gt lt BCC gt Model 427 Low Source Instruction Manual D 3 Geysitech Bayern Hessen Protocol Geysitech Commands Data Sampling Data Query Command DA D 4 Model 42i Low Source Instruction Manual The lt address gt is optional which means it can be left out completely The lt address gt if present must match the Instrument Address Additio
129. e C Link commands in Table B 1 e Measurements on page B 9 describes and gives examples of the measurement commands e Alarms on page B 12 describes and gives examples of the alarm commands e Diagnostics on page B 16 describes and gives examples of the diagnostic commands e Datalogging on page B 16 describes and gives examples of the datalogging commands e Calibration on page B 23 describes and gives examples of the calibration commands e Keys Display on page B 26 describes and gives examples of the keys and display commands e Measurement Configuration on page B 28 describes and gives examples of the measurement configuration commands e Hardware Configuration on page B 32 describes and gives examples of the hardware commands e Communications Configuration on page B 35 describes and gives examples of the communication commands Model 427 Low Source Instruction Manual B 1 C Link Protocol Commands Instrument Identification Number Instrument Identification Number B 2 Commands Model 427 Low Source Instruction Manual e I O Configuration on page B 39 describes and gives examples of the I O commands e Record Layout Definition on page B 44 describes and gives examples of the record layouts Each command sent to the analyzer must begin with the American Standard Code for Information Interchange ASCII symbol or byte value equivalent of
130. e cooler failed Model 427 Low Source Instruction Manual 6 3 Troubleshooting Troubleshooting Guides Table 6 2 Troubleshooting Alarm Messages continued Alarm Message Alarm Alarm Alarm Alarm Alarm 6 4 Model 427 Low Source Instruction Manual Internal Temp Chamber Temp Conv Temp Pressure Sample flow Possible Cause Cooler reads 20 C Check fan operation Check fan filter Chamber temperature below set point of 50 C Converter temperature low High pressure indication Sample flow Low Action Replace cooler thermocouple bad Replace fan if not operating properly Clean or replace foam filter refer to Preventive Maintenance chapter in this manual Check 10K thermistor replace if bad Check temperature control board to insure the LEDs are coming on If not temperature control board could be defective Molybdenum converter should be hot to the touch If not the heater may have failed Check that converter temp set point is approximately 325 C Check that voltage to the heater is 115 VAC Check the pump for a tear in the diaphragm replace with pump repair kit If necessary Refer to Preventive Maintenance chapter in this manual Check that capillaries are properly installed and O rings are in good shape Replace if necessary Check flow system for leaks Check sample capillary 015 inch ID for blockage Replace as ne
131. e example below sets the converter temperature to 625 C Send set conv set temp Receive set conv set temp 625 deg C ok date This command reports the current date The example below reports the date as December 1 2004 Send date Receive date 12 01 04 set date mm dd yy mm month dd day yy year This command sets the date of the analyzer s internal clock The example below sets the date to March 19 2005 Send set date 03 19 05 Receive set date 03 19 05 ok set default params This command sets all the parameters to their default values This does not affect the factory calibrated parameters Send set default params Receive set default params ok ozonator This command reports the ozonator on or off The example below reports that the ozonator is on Send ozonator Receive ozonator on Model 427 Low Source Instruction Manual B 33 C Link Protocol Commands Hardware Configuration B 34 Model 42i Low Source Instruction Manual set ozonator onoff These commands set the ozonator on or off The example below sets the ozonator off Send set ozonator off Receive set ozonator off ok ozonator flow This command reports the current ozonator flow The example below reports that the current ozonator flow is 0 050 LPM Send ozonator flow Receive ozonator flow 0 050 l m ozonator safety This command reports the status of the ozonator safety on or off The example below reports that the ozonator
132. e range screen is similar for the single dual and auto range modes The only difference between the screens are the words High and Low to indicate which range is displayed The example below shows the NO range screen in single mode For more Thermo Fisher Scientific Thermo Fisher Scientific Operation Range Menu information about the single dual and auto range modes see Single Range Mode Dual Range Mode and Auto Range Mode earlier in this chapter Table 3 5 lists the standard ranges Table 3 6 lists the extended ranges When switching from standard to extended ranges the PMT voltage must be readjusted For more information about readjusting the PMT voltage see Chapter 7 Servicing e Inthe Main Menu choose Range gt NO NO or NO Range e Use and to scroll through a list of choices e Press to save the new range Table 3 5 Standard Ranges ppb ppm g m mg m 200 0 2 500 0 5 500 0 5 1 000 1 0 1 000 1 0 2 000 2 0 2 000 2 0 5 000 5 0 5 000 5 0 10 000 10 0 10 000 10 0 20 000 20 0 20 000 20 0 50 000 50 0 50 000 50 0 100 000 100 0 100 000 100 0 150 000 150 0 C1 C1 C1 C1 C2 C2 C2 C2 C3 C3 C3 C3 Model 427 Low Source Instruction Manual 3 15 Operation Range Menu Set Custom Ranges 3 16 Model 427 Low Source Instruction Manual Table 3 6 Extended Ranges ppb ppm g m mg m 1 000 1 0 2 000 2 0 2 000 2 0 5 000 5 0 5 000 5 0 10 000 10 0 10 000 10 0 20 000 2
133. e with a dry cloth it may easily scratch the plate a Do not use alcohol acetone MEK or other Ketone based or aromatic solvents to clean the module use a soft cloth moistened with a naphtha cleaning solvent Do not place the LCD module near organic solvents or corrosive gases a Do not shake or jolt the LCD module a Thermo Fisher Scientific Model 427 Low Source Instruction Manual xvii Preface Where to Get Help WEEE Symbol The following symbol and description identify the WEEE marking used on the instrument and in the associated documentation Symbol Description Marking of electrical and electronic equipment which applies to R electrical and electronic equipment falling under the Directive 2002 96 EC WEEE and the equipment that has been put on the market DE after 13 August 2005 Where to Get Hel D Service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com adi 1 866 282 0430 Toll Free 1 508 520 0430 International Thermo Fisher Scientific Model 427 Low Source Instruction Manual XVIII Thermo Fisher Scientific Chapter 1 Introduction The Model 427 Low Source Chemiluminescence NO NO NO Analyzer combines proven detection technology easy to use menu driven software and advanced diagnostics to offer unsurpassed flexibility and reliability The Model 427 Low Source has the following fe
134. eck To perform just a zero check set the span and purge duration screen to 0 off The same applies to perform just a span or purge check e In the Main Menu choose Calibration gt Zero Span Check gt Zero Span or Purge Duration Min e Use and to increment and decrement the numeric value e Press to save the duration value t CHANGE VALUE SOVE Zero Span Averaging Time The Zero Span Averaging Time screen allows the user to adjust the zero span averaging time The zero span averaging time is used by the analyzer only when performing an automatic zero or span check The analyzer s averaging time is used for all other functions The following averaging times are available 1 2 5 10 20 30 60 90 120 180 240 and 300 seconds e Inthe Main Menu choose Calibration gt Zero Span Check gt Zero Span Avg Sec e Use and to scroll through a list of choices e Press to save the averaging time 3 28 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Zero Span Ratio Operation Calibration Menu The Zero Span Ratio screen is used to adjust the ratio of zeros to spans For example if this value is set to 1 a span check will follow every zero check If this value is set to 3 there will be two zero checks between each zero span check This value may be set from 1 to 10 with 1 as default e In the Main Menu choose Calibration gt Zero Span Chec
135. ecs 7 blocks lrec per srec per These commands report the long and short records logging period The example below shows that the short record logging period is 5 minutes Send Srec per ReCelVe Sree per 5 min set srec per value set srec per value value 115115130160 l1 B 20 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Datalogging These commands set the long and short records logging period to value in minutes The example below sets the long record logging period to 15 minutes Send set lrec per 15 Receive set lrec per 15 ok no of lrec no of srec These commands report the number of long and short records stored in the long and short records memory The example below shows that 50 long records have been stored in the memory Send no of lrec Receive no of lrec 50 recs malloc lrec malloc srec These commands report the currently set memory allocation for long and short records in percent of total memory Send malloc lrec Receive malloc lrec 10 set malloc lrec value set malloc srec value value 0 to 100 These commands set the percent of memory space allocated for long and short records to value where value is a floating point number representing percent The example below sets the memory allocation for long records to 10 Note Issuing these commands will clear all the logging data memory All the existing records s
136. ect all connectors from the temperature control board Use a small flat blade screwdriver to loosen the two screws securing the CONV TC cable Note that the red wire is towards the rear and the yellow wire is towards the front 3 Snap off the board from the board mounts 4 To install the temperature control board follow previous steps in reverse Use the following procedure to calibrate the ambient internal temperature for the instrument Equipment Required Calibrated thermometer or 10K 1 Resistor WARNING The service procedures in this manual are restricted to qualified service representatives If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Model 427 Low Source Instruction Manual 7 37 Servicing Ambient Temperature Calibration 7 38 Model 42i Low Source Instruction Manual Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a 1 Remove the instrument cover 2 Tape the thermistor plugged into the measurement interface board toa calibrated thermometer Figure 7 2 Note Since the thermistors are interchangeable to an accuracy of 0 2 C and have a value of 10K ohms at 25 C an alternate procedure is to connect an accurately known 10K resistor to the thermistor input AMB TEMP
137. ed on the basis of calibration and zero and span check data collected over a period of time Note however that the EPA requires a minimum of one multipoint calibration per calendar quarter Such a quality control program is essential to ascertain the accuracy and reliability of the air quality data collected and to alert the user if the accuracy or reliability of the data should become unacceptable A compilation of this kind might include items such as dates of calibration atmospheric conditions calibration factors and other pertinent data Use the following procedure to perform a zero and span check 1 Thermo Fisher Scientific Connect the zero gas to the SAMPLE bulkhead in a standard instrument or to the ZERO bulkhead in a Model 42i Low Source equipped with the zero span and sample solenoid valve option Allow the instrument to sample zero gas until a stable reading is obtained on the NO NO and NO channels then record the zero readings Unless the zero has changed by more than 0 010 ppm it is recommended that the zero not be adjusted If an adjustment larger than this is indicated due to a change in zero reading a new multipoint calibration curve should be generated Attach a supply of known concentration of NO and NO usually generated via an NIST traceable NO working standard and a GPT system to the SAMPLE bulkhead or SPAN bulkhead for instruments equipped with the zero span and sample solenoid valve option on the rea
138. eive relay stat open Note if individual relays have been assigned different logic then the response would be a 4 digit hexadecimal string with the least significant byte LSB being relay no 1 For example Receive relay stat 0x0001 indicates relay no 1 is set to normally open logic all others are normally closed Receive relay stat 0x0005 indicates relay no 1 and 3 are set to be normally open logic all others are normally closed set relay open set relay open value set relay closed set relay closed value These commands set the relay logic to normally open or closed for relay number value where value is the relay between 1 and 16 The example below sets the relay no 1 logic to normally open Model 427 Low Source Instruction Manual B 43 C Link Protocol Commands Record Layout Definition Record Layout Definition Format Specifier for ASCII B 44 Responses Format Specifier for Binary Responses Model 42i Low Source Instruction Manual Note if the command is sent without an appended relay number then all the relays are assigned the set logic of normally open closed a Send set relay open 1 Receive set relay open 1 ok The Erec Lrec and Srec Layouts contain the following e A format specifier for parsing ASCII responses e A format specifier for parsing binary responses In addition to these the Erec Layout contains e A format specifier for producing the front panel displays In operation value
139. el and or over I O connections on the rear panel and sends commands to the other boards to control the functions of the instrument and to collect measurement and diagnostic information The motherboard outputs instrument status and measurement data to the front panel mounted graphics display and to the rear panel I O The motherboard also contains I O circuitry and the associated connector to monitor external digital status lines and to output analog voltages that represent the measurement data Connectors located on the motherboard include External connectors include e External Accessory e RS 232 485 Communications two connectors e Ethernet Communications e I O connector with Power Fail Relay 16 Digital Inputs and 6 Analog Voltage Outputs Internal connectors include e Function key panel and Display e Measurement Interface Board Data Thermo Fisher Scientific Measurement Interface Board Measurement Interface Board Connectors Pressure Sensor Assembly Thermo Fisher Scientific System Description Electronics e I O Expansion Board Data e Digital Output Board e AC distribution The measurement interface board serves as a central connection area for all measurement electronics in the instrument It contains power supplies and interface circuitry for sensors and control devices in the measurement system It sends status data to the motherboard and receives control signals from the motherboard Connectors located o
140. emecstnedeemee 4 3 Dynamic Parameter Specifications for Gas Phase Titrator 4 4 Adjusting Instrument Gain wince sccvsezscansiestareteechsrcuesseiemiareavoes 4 6 Preparing NO NO and NO Calibration Curves 4 9 Calibration in Dual Range and Auto Range Mode 4 12 Calibri Wow N Ornice NEE E 4 13 Calibrate Low NO cornea E EN 4 13 Calibrate Low N Oreiro eect intel cnet een 4 14 Calibrate Fier NO nenene E 4 15 Calibrate High NO oaanerian o a AE 4 15 Calibrate Pie NG urere a a 4 16 Lorand o paN Oe keare e a eee reer ere ae 4 16 Preventive Maintenance s ssssussssusunnnnununnununnnnunnnnnnunnnnnnnnnnnnnnns 5 1 Sae PRC CAUI IONS a asc ntad ean ruins eneaaiees 5 1 Replacement Parisen ana an 5 2 Cleaning the OQutside Case visctincssatidnctcandenguancnidetediovreptanntiapvaies 5 2 Ozonator Air Feed Drying Column Replacement 0 5 2 Capillaries Inspection and Replacement cceeeseeeeeeneeeees 5 2 Model 427 Low Source Instruction Manual vii Contents viii Chapter 6 Chapter 7 Model 42i Low Source Instruction Manual Thermoelectric Cooler Fins Inspection and Cleaning 5 4 Fan Filters Inspection and Cleaning s cissstpertguacdievarssavensveargexe 5 4 Pimp Rebuda i e A 5 5 Tro DIESNOOUNGoiaiiaia a 6 1 Sale PCC AO Svea a A 6 1 Troubleshooting G uides seirinin iio e eee 6 2 Board Level Connection Diagrams essesesesesesseressresseressrersees 6 6 Connector Pin Descr
141. ent and decrement the numeric character at the cursor Fno X NO gt lur NO Jour INO loris INO lren 2 JOUT ORIG REM Pest pop Where NOslour diluted NO concentration at the output manifold ppm NO orig original NO concentration prior to addition of O3 ppm NO pgm NO concentration remaining after addition of O3 ppm Press to calculate and save the new NO coefficient based on the ed spa enter n concentration The analyzer does a one point NO span coefficient calculation corrects the NO reading for converter inefficiency and then adds the corrected NO to the NO signal to give a corrected NO signal If the analyzer calculates a NO span coefficient of less than 0 96 either the entered NO concentration is incorrect the converter is not being heated to the proper temperature the instrument needs servicing leak Thermo Fisher Scientific Thermo Fisher Scientific Calibration Calibration or imbalance or the converter needs replacement or servicing The NO analog output will reflect the NO concentration generated by GPT any NO impurity and the NO zero offset The recorder response will be as follows Recorder Response scale SO tu x 100 Zn Where URL Nominal upper range limit of the NO channel ppm 12 Record the NO concentration and the analyzer s NO response 13 Maintaining the same Fo Fo and Fp adjust the ozone generator to obtain several other concentrations o
142. ential representation with 4 characters mantissa and 2 characters exponent each with sign Mantissa sign and 4 digits The decimal point is assumed to be after the first digit and is not transmitted Exponent sign and 2 digits Example 5384000 0 is represented as 5384 06 0 04567 is represented as 4567 02 lt status gt is formed by lt operating status gt and lt error status gt and separated by a space i e lt operating status gt lt SP gt lt error status gt Each of the two lt operating status gt and lt error status gt are formed by two characters each representing a 2 digit hex number which is one byte 8 Bits operation status and one byte 8 Bits error status These two bytes contain the information about the main operating conditions of the instrument at that instant For details on how to interpret the status bytes refer to Table D 1 and Table D 2 below lt SFKT gt is the space provided for future use for special function it currently contains a string of ten 0 s i e lt 0000000000 gt Model 427 Low Source Instruction Manual D 5 Geysitech Bayern Hessen Protocol Geysitech Commands Example Geysitech Protocol with transmission of three concentrations Instrument ID is 1 Operation Status is 03 Error Status is 04 Data Query String lt STX gt DA lt CR gt Reply String lt STX gt MDO3 lt SP gt 001 lt SP gt 4 2578 01 lt SP gt 03 lt SP gt 04 lt SP gt 0000000000 lt SP gt 002
143. enu choose Calibration Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 23 Operation Calibration Menu Calibrate NO and NO The Calibrate NO and NO Background screens are used to adjust the B ackg round background or perform a zero calibration Be sure the analyzer samples zero air until the readings stabilize The display shows the current NO or NO reading It is important to note the averaging time when calibrating The longer the averaging time the more precise the calibration will be For the most precise calibration use the 300 second averaging time For more information about calibration see Chapter 4 Calibration e In the Main Menu choose Calibration gt Calibrate NO or NO Background e Press to set the new reading to zero 3 24 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Calibrate NO NO and NO Coefficients Thermo Fisher Scientific Operation Calibration Menu The Calibrate NO Coefficient screen is used to adjust the NO span concentrations while sampling span gas of known concentration All calibration screens operate the same way Therefore the following description of the NO calibration screen applies to the NO and NO calibration screens as well The display shows the current NO concentration reading and the current NO range The next line of the display is where the NO calibration gas concentration is entered It is important to
144. eplace the LCD module by following previous steps in reverse For additional assistance service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com adi 1 866 282 0430 Toll Free 1 508 520 0430 International Model 427 Low Source Instruction Manual 7 47 Servicing Service Locations 7 48 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Hardware Chapter8 System Description This chapter describes the function and location of the system components provides an overview of the software structure and includes a description of the system electronics and input output connections and functions e Hardware on page 8 1 describes the analyzer components e Software on page 8 4 provides an overview of the software organization and detailed information on the software tasks e Electronics on page 8 6 describes the system boards assemblies and connectors e I O Components on page 8 9 describes the input and output communication functions and components Model 427 Low Source hardware components Figure 8 1 include e NQO to NO converter e Mode solenoid e Reaction chamber e Optical filter e Pressure transducer e Ovzonator e Ozone flow switch e Photomultiplier tube e Photomultiplier tube cooler e Pump e Sample capillary Model 427 Low
145. er s subsystems and output have been empirically determined This empirical data is used to compensate for any changes in temperature This compensation can be used for special applications or when operating the instrument outside the recommended temperature range even though the Model 427 Low Source does not require temperature compensation for EPA equivalency When temperature compensation is on the display shows the current internal instrument temperature measured by a thermistor on the Interface board When temperature compensation is off the display shows the factory standard temperature of 30 C e Inthe Main Menu choose Instrument Controls gt Temperature Compensation e Press to toggle and set the temperature compensation on or off Thermo Fisher Scientific Operation Instrument Controls Menu Pressure Compensation Pressure compensation provides compensation for any changes to the instrument s output signal due to reaction chamber pressure variations The effects of reaction chamber pressure changes on the analyzer s subsystems and output have been empirically determined This empirical data is used to compensate for any change in reaction chamber pressure This compensation can be used even though the Model 427 Low Source does not require pressure compensation for EPA equivalency When pressure compensation is on the first line of the display represents the current pressure in the reaction chamber When pressure c
146. f NO over the NO range at least five evenly spaced points across the remaining scale are suggested 14 Record the stable responses and plot the analyzer s NO responses versus the corresponding calculated using the above equation for NO3 oy7 concentrations and draw or calculate the NO calibration curve Note It is important that the curve should be linear within 1 FS over the NO range If the curve is nonlinear the analyzer is not operating correctly possible leak or converter failure etc and should be serviced Assuming the curve is linear subsequent data should be reduced using this NO calibration curve response a Using the Calibration Factors menu can change the calibration factors This is often useful in a troubleshooting situation However after the above calibration procedure is completed all subsequent data reduction depends on the calibration parameters remaining the same as during the initial calibration Therefore never change any calibration factor without first recording the value so that after any troubleshooting procedure is completed the initial value can be re entered thereby not altering the multipoint calibration Model 427 Low Source Instruction Manual 4 11 Calibration Calibration in Dual Range and Auto Range Mode 4 12 Calibration in Dual Range and Auto Range Mode Model 42i Low Source Instruction Manual The dual auto range calibration feature is used to calibrate the analyzer at
147. f signal read by the analyzer in the NO channel while sampling zero air The NO background is the amount of signal read by the analyzer in the NO channel while sampling zero air Although the background is expressed in terms of concentration the background signal is actually the combination of electrical offsets PMT dark current and trace substances undergoing chemiluminescence Before the analyzer sets the NO and NO readings to zero it stores these values as the NO and NO background corrections respectively The NO background correction is determined from the NO and NO background corrections and is not displayed NO and NO background corrections are typically below 15 ppb The NO and NO Background screens are used to perform a manual adjustment of the instruments zero background Before performing a background adjustment allow the analyzer to sample zero air until stable readings are obtained The NO channel should be adjusted first Both the NO and NO Background screens operate the same way Therefore the following description of the NO background screen applies to the NO background screen as well The first line of the display shows the current NO reading The second line of the display shows the NO background correction that is stored in memory The NO background correction is a value expressed in the current gas units that is subtracted from the NO reading to produce the NO reading that is displayed Model 427 Low Source Ins
148. g any procedures in this chapter WARNING If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired a Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter a Model 427 Low Source Instruction Manual 5 1 Preventive Maintenance Replacement Parts Replacement Parts See the Servicing chapter for a list of replacement parts Cleaning the Outside Clean the outside case using a damp cloth being careful not to damage the Case labels on the case clean the outside case Equipment Damage Do Not use solvents or other cleaning products to Ozonator Air Feed vse the following procedure to replace the ozonator air feed drying column Drying Column Replacement 1 Remove the drying column from the connector DRY AIR bulkhead on the rear panel of the instrument 2 Replace spent absorbent material indicating Drierite or silica gel with regenerated material 3 Reinstall the drying column to the DRY AIR bulkhead 4 Perform a Zero Span check see the Calibration chapter Capi llaries Inspection The capillaries normally only require inspection when instrument ond Replacement performance indicates that there may be a flow prob
149. g the Pressure Transducer sssec g adecicvadseesocexsessscoabeaes 7 34 Replacing the Serb Oer aiieieo a ee cee iced ese 7 40 Replacing the I O Expansion Board Optional 0 7 41 Rear Panel Board COnMCCIOIS ersinnen e N 7 41 Replacing the Measurement Interface Board 0 eee eeeeeeee 7 44 Replacing the Front Panel Board and the LCD Module 7 45 Hardware Components gainnar T T 8 2 Flow Diagram Zero Span Option sssessssssssssseesssseseressresseesssress 9 2 Model 42i Low Source Instruction Manual Xi Figures xii Model 42i Low Source Instruction Manual Rack Mount Option Assembly sssssssssseessssesessssessssrssssresssresssres 9 4 Benci VU Oia CUTS cunnen E 9 5 FPA Ck MOTTE mioarei eoi oiae E EA 9 6 Retrofit Rack Mounting srssicrereneinarenii e e 9 7 Flap SUS e S E E B 12 Thermo Fisher Scientific Tables Tables Model 427 Low Source Specifications ccssaxcvssenevsasdtavsceeavendvavehasabeavavatanatanes 1 3 Front Patiel P rishi tons csvosicinideactabarvachieodnpvah E 3 3 Default Analog Outputs in Single Range Mode ceeeeeeeeeesseeeeneeeeenees 3 9 Default Analog Outputs in Dual Range Mode ee eee eeseeeeeseeeeeneeeeees 3 11 Default Analog Outputs in Auto Range Mode ee eeeeeeeseeeeeseeeeeneeeeees 3 13 Sandard RAM CES ive cee cis a i A Ta ATER 3 15 FESO RINE e iea a E T EE 3 16 Analog Output Zero to Full Scale Table oo eee eeeeeeseeeeseeeeeneeeeenees 3 56 Signal Type Group Choices sccis osa era a E E
150. hall be one 1 year from the date of shipment to Buyer for equipment and ninety 90 days for all other products the Warranty Period Seller agrees during the Warranty Period to repair or replace at Seller s option defective Products so as to cause the same to operate in substantial conformance with said published specifications provided that a Buyer shall promptly notify Seller in writing upon the discovery of any defect which notice shall include the product model and serial number if applicable and details of the warranty claim b after Seller s review Seller will provide Buyer with service data and or a Return Material Authorization RMA which may include biohazard decontamination procedures and other product specific handling instructions and c then if applicable Buyer may return the defective Products to Seller with all costs prepaid by Buyer Replacement parts may be new or refurbished at the election of Seller All replaced parts shall become the property of Seller Shipment to Buyer of repaired or replacement Products shall be made in accordance with the Delivery provisions of the Sellers Terms and Conditions of Sale Consumables including but not limited to lamps fuses batteries bulbs and other such expendable items are expressly excluded from the warranty under this warranty Notwithstanding the foregoing Products supplied by Seller that are obtained by Seller from an original manufacturer or third party
151. he TCP IP netmask address Send addr nm Receive addr nm 255 255 255 0 set addr nm address This command sets the netmask address where address consists of four cc 39 numbers ranging from 0 255 inclusive separated by Send set addr nm 255 255 255 0 Receive set addr nm 255 255 255 0 ok baud This command reports the current baud rate for the serial port RS232 RS485 The example below reports that the current baud rate is 9600 Send baud Receive baud 9600 Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Communications Configuration set baud rate rate 1200 2400 4800 9600 19200 38400 57600 115200 This command sets the instrument baud rate The example below sets the instrument s baud rate to 115200 Note After the command is sent the baud rate of the sending device must be changed to agree with the instrument a Send set baud 115200 Receive set baud 115200 ok dhcp This command reports the current state of use of DHCP on or off DHCP is used to assign an IP address to the analyzer automatically The example below shows that DHCP is on Send dhcp Receive dhcp on set dhcp onoff These commands enables and disables the DHCP service by either on or off Changes to this parameter will only take effect when the analyzer is powered up The example below sets the DHCP service on Note When DHCP is set to on the user supplied addr gw addr dns ad
152. he following procedure to replace the LCD module Figure 7 23 Equipment Required LCD module Philips screwdriver CAUTION If the LCD panel breaks do not to let the liquid crystal contact your skin or clothes If the liquid crystal contacts your skin or clothes wash it off immediately using soap and water Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Do not remove the panel or frame from the module a The polarizing plate is very fragile handle it carefully a Do not wipe the polarizing plate with a dry cloth it may easily scratch the plate a Do not use alcohol acetone MEK or other Ketone based or aromatic solvents to clean the module use a soft cloth moistened with a naphtha cleaning solvent a Do not place the module near organic solvents or corrosive gases Do not shake or jolt the module a 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the two screws from right side of LCD module viewed front front 3 Disconnect the ribbon cable and the two wire connector from the front panel board Thermo Fisher Scientific Service Locations Thermo Fisher Scientific Servicing Service Locations 4 Loosen left side retaining screw viewed from front and slide the LCD module out towards the right and rear of the instrument 5 R
153. hen calibrate the NO channel For detailed information about the menu parameters and the icons used in these procedures see the Operation chapter l Determine the GPT flow conditions required to meet the dynamic parameter specifications as indicated in Dynamic Parameter Specifications for Gas Phase Titrator earlier in this chapter 2 Adjust the GPT diluent air and O3 generator air flows to obtain the flows determined in Dynamic Parameter Specifications for Gas Phase Titrator earlier in this chapter The total GPT airflow must exceed the total demand of the analyzer The Model 42i Low Source requires approximately 700 cc min of sample flow and a total GPT airflow of at least 1 5 liters min is recommended a Allow the analyzer to sample zero air until the NO NO and NO responses stabilize b After the responses have stabilized from the Main Menu choose Calibration gt Calibrate NO Background c Press to set the NO reading to zero Thermo Fisher Scientific Thermo Fisher Scientific Calibration Calibration d Press m to return to the Calibration menu and repeat this procedure to set the NO background to zero e Record the stable zero air responses as Zo ZNOy and ZNO recorder response percent scale 3 Adjust the NO flow from the standard NO cylinder to generate a NO concentration of about 80 of the upper range limit URL of the NO range The exact NO concentration is calcul
154. his command sets the internal clock 24 hour time The example below sets the internal time to 2 15 pm Note if seconds are omitted the seconds default to 00 Send set time 14 15 Receive set time 14 15 ok addr dns This command reports the TCP IP address for the domain name server Send addr dns Receive addr dns 192 168 1 1 set addr dns address This command sets the domain name server address where address consists of four numbers ranging from 0 255 inclusive separated by Send set addr dns 192 168 1 1 Receive set addr dns 192 168 1 1 ok Model 427 Low Source Instruction Manual B 35 C Link Protocol Commands Communications Configuration B 36 Model 42i Low Source Instruction Manual addr gw This command reports the default TCP IP gateway address Send addr gw Receive addr gw 192 168 1 1 set addr gw address This command sets the default gateway address where address consists of cc 3 four numbers ranging from 0 255 inclusive separated by Send Set addr gw 192 168 1 1 Receive set addr gw 192 168 1 1 ok addr ip This command reports the IP address of the analyzer Send addr ip Receive addy ip 192 168 1 15 set addr ip address This command sets the analyzer s IP address where address consists of four cc 99 numbers ranging from 0 255 inclusive separated by Send set addr ip 192 168 1 15 Receive set addr ip 192 168 1 15 ok addr nm This command reports t
155. hould be retrieved using appropriate commands if required Send set malloc lrec 10 Receive set malloc lrec 10 ok set copy sp to lrec set copy sp to srec set copy sp to stream These commands copy the current selections in scratch pad sp into the long record short record or streaming data list The example below copies the current list in scratch pad into the long records list Model 427 Low Source Instruction Manual B 21 C Link Protocol Commands Datalogging B 22 Model 42i Low Source Instruction Manual Send set copy sp to lrec Receive set copy sp to lrec ok set copy lIrec to sp set copy srec to sp set copy stream to sp These commands copy the current contents of the long record short record or streaming data list into the scratch pad sp These commands are useful in easy modification of current long record short record or streaming data lists The example below copies the current list of long records into the scratch pad Send set copy lrec to sp Receive set copy lrec to sp ok sp field number This command reports the variable number and name stored at index in the scratch pad list The example below shows that the field 5 in the scratch pad is set to index number 13 which is for the variable NO concentration Send sp field 5 Receive sp field 5 13 pres set sp field number value number 1 32 is the maximum number of fields in long and short record lists number 1 18 is for streaming da
156. ic Thermo Fisher Scientific C Link Protocol Commands Alarms alarm conc no min alarm conc no2 min alarm conc nox min alarm conc no max alarm conc no2 max alarm conc nox max These commands report the NO NO5 and NO concentrations alarm minimum and maximum value current setting The example below reports that the NO concentration minimum is 5 2 ppb Send alarm conc no min Receive alarm conc no min 5 2 ppb set alarm conc no min value set alarm conc no2 min value set alarm conc nox min value set alarm conc no max value set alarm conc no2 max value set alarm conc nox max value These commands set the NO NO3 and NO concentrations alarm minimum and maximum value to value where value is a floating point representation of the concentration alarm limits Values must be in the units that are currently set for use The example below sets the NO concentration alarm maximum value to 215 Send set alarm conc no max 215 Receive set alarm conc no max 215 ok alarm converter temp min alarm converter temp max These commands report the converter temperature alarm minimum and maximum value current settings The example below reports that the converter temperature alarm minimum value is 600 0 C Send alarm converter temp min Receive alarm converter temp min 600 0 deg C set alarm converter temp min value set alarm converter temp max value These commands set the converter temperature alarm minimum and maximum values t
157. icients Reports sets low range NO coefficient Reports sets low range NO span gas concentration Reports NO concentrations calculated with low range coefficients Reports sets low range NO coefficient Reports sets low range NO span gas concentration Reports sets current NO low range Reports sets current NO low range Reports sets current NO low range Outputs long records in the format specified in the command Outputs long records Page B 28 B 38 B 38 B 38 B 10 B 27 B 39 B 26 B 17 B 17 B 17 B 17 B 17 B 17 B 42 B 42 B 42 B 9 B 10 B 24 B 25 B 10 B 24 B 25 B 10 B 24 B 25 B 28 B 28 B 28 B 17 B 18 Thermo Fisher Scientific Thermo Fisher Scientific Command lrec format lrec layout lrec mem size lrec per malloc Irec malloc srec me menu meas mode mode no no bkg no coef no gas no of Irec no of srec no2 no2 coef no2 gas nox nox bkg nox coef nox gas ozonator ozonator flow ozonator safety ozonator status perm gas temp pmt status pmt temp pmt voltage pres pres cal pres comp C Link Protocol Commands Table B 1 C Link Protocol Commands Commands Description Page Reports sets output format for long records ASCII or binary B 19 Reports current layout of lrec data B 20 Reports maximum number of long records that can be stored B 20 Reports sets long record logging period B 20 Reports sets memory allocation for long records B 21 Reports sets memory all
158. icing NO2 to NO Converter Replacement reaction chamber and the quartz window To clean these surfaces use cotton swabs and methanol 6 To continue removing rear of reaction chamber remove the three socket head screws holding it to cooler being careful to keep quartz window and red filter in cooler body 7 To reinstall reaction chamber follow previous steps in reverse making sure to backfill the cooler with dry air or nitrogen prior to installing reaction chamber 8 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter NO to NO Converter Use the following procedure to replace the converter Figure 7 12 Replacement Equipment Required NO to NO Converter Wrench 7 16 inch Wrench 9 16 inch Wrench 1 2 inch Wrench 5 8 inch Screwdriver Nut driver 1 4 inch Nut driver 5 16 inch CAUTION Avoid contact with converter heated components Allow converter to cool to room temperature before handling converter components Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 21 Servicing NO2 to NO Converter Replacement 7 22 Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component 1 Turn instrument OFF unplug the power cord and remove the cover 2 Allow converter to cool to room temper
159. increment and decrement the numeric character at the cursor 4 Press to calculate and save the new high NO coefficient based on the entered span concentration You can change the calibration factors by using the Calibration Factors menu This is often useful in a troubleshooting situation However after the above calibration procedure is completed all subsequent data reduction depends on the calibration parameters remaining the same as during the initial calibration Therefore never change any calibration factor without first recording the value so that after any troubleshooting procedure is completed the initial value can be re entered thereby not altering the multipoint calibration The analyzer requires initial and periodic calibration according to the procedures outlined in this manual Initially the frequency of the calibration procedure should be determined by the stability of the zero and span checks which may be run daily You should generate a new calibration curve when zero and span checks indicate a shift in instrument gain of more than 10 percent from that determined during the most recent multipoint calibration You can adjust the frequency of calibration and even zero and span checks appropriately as you gain confidence with the instrument Thermo Fisher Scientific Calibration Zero and Span Check You should have a quality control plan where the frequency and the number of points required for calibration can be modifi
160. ing the parameter This is not necessarily the same as the entries which may be displayed Button Designator Then there appears an optional button designator This will be one of B be le T or N B Indicates a button which pops up an input dialog prompting the user for a new value using the designated input format The input format is specified from the B through the subsequent semicolon B 46 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Examples C Link Protocol Commands Record Layout Definition I Indicates a button which pops up a selection list with input translation That is the values read are translated before they are compared to the selection list options L lIndicates a button which pops up a selection list without any translation The output value is number of the selected option T Indicates a button which pops up a selection list with output translation The number of the option selected is used as an index into the translation table to generate an output string N Indicates a button which only sends the subsequent command to the instrument No user prompting happens The following string through an optional or the end of the line is the command which is to be sent to the instrument upon the completion of the button selection The command string should normally contain print style formatting to include the user input Ifa is present
161. iptions sessseessssseesssssseessssssreessssssreessss 6 8 SERVICe IGOCALIONS ressone a a a deueaeated 6 22 SEEM CUING nan a cereluebasacaayeatuacthneabariuanieeadcavaies 7 1 Sally Precint Onis usd ce eins ensui a active wien dled sae cemaagneecualseensate sae s 7 3 Birra are Upd S ce a nesses 7 5 Replacement Parts Lis tareapinsisani iania aai 7 5 B E E E A E E E eee eee 7 6 Removing the Measurement Bench and Lowering the Partition Panel viii iectici cities ieee aes 7 8 Petra Rep ace et gathers oeauc ET S 7 11 Pain ep acer ve 11 2296 cauiesecataceaeatetaudanemenparatanaeeneanaaaen 7 12 PMT Cooler and Reaction Chamber Assembly Replacement 7 13 Photomultiplier Tube Replacement eeceeeseeeeeeeneeeeeeeees 7 15 PMT High Voltage Power Supply Replacement 7 16 PME Voltage Adj OSU e it ivsss sesseaveseaettacsentacesiaiosetuetaeeentes 7 18 Reaction Chamber Cleaning or Removal eseeeseeeeeseeeeees 7 19 NO to NO Converter Replacement cceesseeeeesneeeeeeeees 7 21 Solenoid Valve Replace mien chen cayaneescngvadoccesusonesgeeestcelaaes 7 23 Ozonator Assembly Replacement eseceeesceeeeeseeeeeeneeeees 7 24 Ozonator Transformer Replacement ceesseceeeeseeeeeeeeees 7 26 Input Board Replaceinent yero en ina e E E 7 26 Input Board alibraOn syne ssctenschosncnt actheseaiitndumaabentdeatastatsenss 7 28 DC Power Supply Replacement wicisstejaiscssdogaixsacseeneseenievericians 7 29 Analogs Output
162. is taken from the 8th If the asterisk were not present it would indicate instead that 8 digits after the decimal point should be displayed B 48 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Appendix C MODBUS Protocol This appendix provides a description of the MODBUS Protocol Interface and is supported both over RS 232 485 RTU protocol as well as TCP IP over Ethernet The MODBUS Commands that are implemented are explained in detail in this document The MODBUS protocol support for the iSeries enables the user to perform the functions of reading the various concentrations and other analog values or variables read the status of the digital outputs of the analyzer and to trigger or simulate the activation of a digital input to the instrument This is achieved by using the supported MODBUS commands listed below For details of the Model 427 Low Source MODBUS Protocol specification see the following topics e Serial Communication Parameters on page C 2 describes the parameters used to support MODBUS RTU protocol e TCP Communication Parameters on page C 2 describes the parameters used for TCP connection e Application Data Unit Definition on page C 2 describes the formats used over serial and TCP IP e Function Codes on page C 3 describes the various function codes supported by the instrument e MODBUS Commands Supported on page C 8 lists the MODBUS commands supported in Tab
163. ist strap must be worn while handling any internal component 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect the high voltage cable from the PMT power supply and unplug the BNC cable from the Input Board 3 Remove six external screws holding PMT cover plate and the four screws holding the PMT shroud to the panel and remove the PMT Model 427 Low Source Instruction Manual 7 15 Servicing PMT High Voltage Power Supply Replacement cover plate Figure 7 9 If the cooler fan is attached unplug the fan power cord if necessary PMT Cover Plate Screws 3 PMT Shroud Screws 4 PMT Base Screws 3 PMT Base Assembly Figure 7 9 Replacing the PMT 4 Remove the three retaining screws holding PMT base assembly to the cooler using a 5 16 inch nut driver source This can permanently damage the tube a Equipment Damage Do not point the photomultiplier tube at a light 5 Pull the PMT and PMT base from cooler assembly by twisting it slightly back and forth 6 To install PMT follow previous steps in reverse making sure to backfill the cooler with dry air or nitrogen prior to replacing the PMT 7 Perform a photomultiplier tube calibration See Photomultiplier Tube Calibration in the Operation chapter PMT High Voltage Use the following procedure to replace the PMT high voltage power supply Power Supply Figure 7 10 Re p lacement Equipment Required 7 16 Model 427 L
164. it indicates a command which is sent to the instrument upon successful completion of the button command to update the value field This is not currently used Some examples n is the C syntax for an end of line character Concentrations n This is a single text only line np This is a single blank line NO 3s n This is a line which appears slightly indented The text field is NO the value is taken from the third element of the data response and interpreted as a string NO 18sBd ddd set no coef s n This is a line which also appears slightly indented The next field is also NO but the value is taken from the eighteenth element of the data response again interpreted as a string A button appears on this line which when pressed pops up an input dialog which will state Please enter a new Model 427 Low Source Instruction Manual B 47 C Link Protocol Commands Record Layout Definition value for NO using a d ddd format The string entered by the user is used to construct the output command If the user enters for example 1 234 the constructed command will be set no coef 1 234 NO 21f Code 0 Code 1 Code 2 Code 3 Code 4 Code 5 Code 6 Code 7 Code 8 Code 9 Code 10 Code 11 Lset range no d n This is a line which appears slightly indented the title is again NO and the value the twenty first element of the data response interpreted as a floating point number There is a no translation button which
165. k gt Zero Span Ratio e Use and to increment and decrement the numeric value e Press to save the ratio value Model 42i Low Source Instruction Manual 3 29 Operation Instrument Controls Menu 3 30 Instrument Controls Menu Ozonator Model 42i Low Source Instruction Manual The Instrument Controls menu contains a number of items The software controls listed in this menu enable control of the listed instrument functions e Inthe Main Menu choose Instrument Controls The Ozonator screen is used to turn the internal ozonator on or off The display shows the status of the control line that turns the ozonator on or off The next line of the display shows the user specified ozonator setting Under most conditions the control line status and ozonator set status are the same However as a safety precaution the microprocessor can override the user specified ozonator setting This occurs only if the ozonator flow doesn t indicate any flow or if the NO converter temperature is below the minimum alarm limit In this case an alarm is activated and the ozonator is turned off This is done to prevent the ozonator from overheating which will result in permanent damage to the ozonator or if the converter temperature drops below the minimum limit which reduces the effectiveness of the ozone destruct It is possible however to defeat this feature by setting the ozonator safety OFF in the Service Menu
166. le C 1 through Table C 3 Additional information on the MODBUS protocol can be obtained at http www modbus org References are from MODBUS Application Protocol Specification V1 la MODBUS IDA June 4 2004 Thermo Fisher Scientific A i Low Source Instruction Manual C 1 MODBUS Protocol Serial Communication Parameters Serial Commun cati On The following are the communication parameters that are used to configure Parameters tbe serial port of the Series to support MODBUS RTU protocol Number of Data bits 8 Number of Stop bits 1 Parity None Data rate from 1200 115200 Baud 9600 is default TCP Communication iSeries Instruments support the MODBUS TCP protocol The register Parameters definition is the same as for the serial interface TCP connection port for MODBUS 502 Appl ication Data Unit Here are the MODBUS ADU Application Data Unit formats over serial Definition 24 TCP IP Serial Slave Address Error Check Slave Address The MODBUS slave address is a single byte in length This is the same as the instrument ID used for C Link commands and can be between 1 and 127 decimal i e 0x01 hex to 0x7F hex This address is only used for MODBUS RTU over serial connections Note Device ID 0 used for broadcast MODBUS commands is not supported Device IDs 128 through 247 i e 0x80 hex to OxF7 hex are not supported because of limitations imposed by C Link a MBAP Header In MODBUS over TCP IP a MODBUS Application Pr
167. lem amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter Equipment Damage Some internal components can be damaged by small Use the following procedure to inspect and replace the capillaries This procedure can be used to check any or all of the capillaries 1 Turn the instrument OFF and unplug the power cord 2 Remove the instrument cover 5 2 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Preventive Maintenance Capillaries Inspection and Replacement 3 Locate the capillaries See Figure 5 1 and Figure 7 2 O cna cas Wa Cajon Fitting Reaction Chamber Front Figure 5 1 Inspecting and Replacing the Capillaries 4 Remove the Cajon fitting s from the reaction chamber body using a 5 8 inch wrench 5 Remove the glass capillaries and O ring Inspect O ring for cuts or abrasion and replace as necessary 6 Check capillary for particulate deposits Clean or replace as necessary 7 Replace capillary in reaction chamber body making sure the O ring is around the capillary before inserting it into the body 8 Replace Cajon fitting Note that the Cajon fitting should be replaced only hand tight 9 Re install the cover 10 Connect the power cord and turn the instrument ON Mo
168. ling span gas Send set span Receive set span ok Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Measurement Configuration gas unit This command reports the current gas units ppb ppm ug m or mg m The example reports that the gas unit is set to ppb Send gas unit Receive gas unit ppb set gas unit unit ppb ppm g m mg m This command sets the gas units to ppb ppm g m or mg m The example below sets the gas units to mg m Send set gas unit mg m3 Receive set gas unit mg m3 ok meas mode This command reports which measurement mode NO NO NO NO is active The example below reports that the measurement mode is set to NO Send meas mode Receive meas mode no set meas mode mode mode no nox no nox This command sets the instrument to NO NO auto mode manual NO mode or manual NO mode The example below sets the instrument to the manual NO mode Send set meas mode no Receive set meas mode no ok pres comp This command reports whether pressure compensation is on or off The example below shows that pressure compensation is on Send pres comp Receive pres comp on set pres comp onoff These commands turn the pressure compensation on or off The example below turns pressure compensation off Send set pres comp off Receive set pres comp off ok Model 42i Low Source Instruction Manual B 31 C Link Protocol Commands Hardware
169. lug the power cord 2 Remove fuse drawer located on the AC power connector 3 If either fuse is blown replace both fuses 4 Insert fuse drawer and reconnect power cord Use the following procedure to replace the silica scrubber or ammonia scrubber Figure 7 19 Equipment Required Silica scrubber or Ammonia scrubber Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component 1 Turn instrument OFF unplug the power cord and remove the cover 2 Unscrew the Teflon tubing at both ends of the scrubber 3 Pull the scrubber off the mounting clips Model 427 Low Source Instruction Manual 7 39 Servicing 1 0 Expansion Board Optional Replacement 4 Push the replacement scrubber into the mounting clips 5 Attach the Teflon tubing at both ends of the scrubber 6 Replace the cover Mounting Clips Figure 7 19 Replacing the Scrubber I 0 Expansion Board Use the following procedure to replace the optional I O expansion board Optional igure 7 20 Re p lacement Equipment Required I O expansion board Nut driver 3 16 inch amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Equipment Damage Some internal components can be damaged by small 1 Turn instrument OFF unplug the power cord and remo
170. mbing arrangement as shown in Figure 2 4 if gas pressure is greater than atmospheric pressure a 2 Connect the air dryer to the DRY AIR bulkhead 3 Connect the EXHAUST bulkhead to a suitable vent or ozone scrubber The exhaust line should be 1 4 inch OD with a minimum ID of 1 8 inch The length of the exhaust line should be less than 10 feet Verify that there is no restriction in this line 4 Connect a suitable recording device to the rear panel connector See the Operation chapter for more information about the rear panel pin outs 5 Plug the instrument into an outlet of the appropriate voltage and frequency grounding cord Under no circumstances should this grounding system WARNING The Model 42i Low Source is supplied with a three wire A N be defeated a Thermo Fisher Scientific Model 42i Low Source Instruction Manual 2 3 Installation setup Procedure 2 4 Model 427 Low Source Instruction Manual Figure 2 3 Model 42i Low Source Rear Panel Instrument Bulkhead see S po Sy Vent to Exhaust Line Sa en i at Atmospheric Pressure Input Gas Line Figure 2 4 Atmospheric Dump Bypass Plumbing Thermo Fisher Scientific Thermo Fisher Scientific Startup Installation Startup Use the following procedure when starting the instrument 1 Turn the power ON 2 Allow 90 minutes for the instrument to stabilize Note It is best to turn the ozonator on and let the instrument run overnight bef
171. ment or decrement the numeric value e Press to save the value Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 93 Operation Service Menu Ozonator Safety The Ozonator Safety screen is used to turn the ozonator safety feature on and off If the ozonator safety is turned off the ozonator will always be on even if there is no flow or the converter is not up to temperature The ozonator safety screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter e In the Main Menu choose Service gt Ozonator Safety e Press to toggle and set the service mode on or off Extended Ranges The Extended Ranges screen is used to turn the extended ranges feature on and off The extended ranges screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter e Inthe Main Menu choose Service gt Extended Ranges e Press to toggle and set the extended ranges on or off 3 94 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Service Menu Dilution Ratio The Dilution Ratio screen allows the user to view and set the dilution ratio Acceptable values are 1 500 1 The default is 1 1 When this value is set the dilution ratio is applied to all concentration measurements This screen is displayed if the dilution rati
172. n EXPANSION I O J1 Analog Voltage Input 1 2 Analog Voltage Input 2 3 Analog Voltage Input 3 4 Ground D Analog Voltage Input 4 6 Analog Voltage Input 5 7 Analog Voltage Input 6 8 Ground 9 Analog Voltage Input 7 10 Analog Voltage Input 8 11 Ground 12 NC 13 NC 14 Ground 15 Current Output 1 16 Current Output Return 17 Current Output 2 18 Current Output Return 19 Current Output 3 20 Current Output Return 21 Current Output 4 22 Current Output Return 23 Current Output 5 24 Current Output Return 25 Current Output 6 MOTHER BD J2 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground 6 18 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Troubleshooting Connector Pin Descriptions Table 6 6 O Expansion Board Optional Connector Pin Descriptions continued Connector Reference Pin Signal Label Designator Description 7 RS485 to Motherboard 8 RS485 to Motherboard Table 6 7 Digital Qutput Board Connector Pin Descriptions Connector Reference Pin Signal Label Designator Description MOTHER BD J1 5V 24V 24V Ground Ground Ground SPI Reset SPI Input SPI Output SPI Board Select SPI Clock Relay 1 Contact a co co N O o A O N O DIGITAL J2 OUTPUTS Relay 2 Contact a Relay 3 Contact a Relay 4 Contact a Relay 5 Contact a Relay 6 Contact a Relay 7 Contact a Relay 8 Contact a co co N O on A W N Relay 9 Contact a
173. n echo of the request returned after the state has been written Request Function code Output Address Output Value Response Function code Output Address Output Value Error Response Function code Exception code 1 Byte 0x05 2 Bytes 0x0000 to maximum allowed by instrument 2 Bytes 0x0000 or OxFFOO 1 Byte 0x05 2 Bytes 0x0000 to maximum allowed by instrument 2 Bytes 0x0000 or OxFFOO 1 Byte Function code 0x80 1 Byte 01 IIlegal Function 02 IIlegal Address 03 lllegal Data 04 Slave Device Failure Here is an example of a request to write Coil 5 ON Request Field Name Function Output Address Hi Output Address Lo Output Value Hi Output Value Lo Thermo Fisher Scientific Hex 05 00 05 FF 00 42i Low Source Instruction Manual C 7 MODBUS Protocol MODBUS Commands Supported Response Field Name Function Output Address Hi Output Address Lo Output Value Hi Output Value Lo Hex 05 00 FF 00 MODBUS Commands Table c 1 through table C 3 lists the MODBUS commands supported for the Model 427 Low Source C 8 Supported A i Low Source Instruction Manual Table C 1 Read Coils for 427 Low Source Coil Number 1 co CO NI my o A Wy N Status AUTORANGE NOQ LOCAL REMOTE SERVICE UNITS ZERO MODE SPAN MODE NO MODE NO MODE NOT USED NOT USED GEN ALARM NO CONC MAX ALARM NO CONC MIN ALARM NO CONC MAX ALARM NO CONC MIN ALARM NO CONC MAX ALARM NO CONC MIN ALARM
174. n is used to erase the current password and disable password protection The remove password is shown if the instrument is unlocked and the password set e Inthe Main Menu choose Password gt Remove Password e Press to remove password and returns to main menu Unlock Instrument The Unlock Instrument screen is used to enter the password to unlock the front panel The Unlock Instrument is shown if the instrument is locked e Inthe Main Menu choose Password gt Unlock Instrument e Press to disable instrument lock and returns to main menu Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 99 Operation Password 3 100 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Equipment Required Pre Calibration Thermo Fisher Scientific Chapter 4 Calibration This chapter describes procedures for performing a calibration of the Model 42i Low Source The information described here should be adequate to perform the calibration However if greater detail is desired due to particular application requirements the factory should be consulted A zero air source free of contaminants such as NO NO and O is required for dilution calibration and gas phase titration This can be a cylinder of zero gas a scrubbed compressed air source or room air depending on the concentration of NO to be measured and the level of NO in the ambient area Use the following procedure before calibrating the
175. n selected a e Inthe Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config The Streaming Data Interval screen is used to adjust the streaming data interval The following interval times are available 1 2 5 10 20 30 60 90 120 180 240 and 300 seconds e Inthe Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config gt Interval e Use t and to scroll through a list of choices e Press to save the new streaming data period Thermo Fisher Scientific Concentrations Other Measurements Thermo Fisher Scientific Operation Instrument Controls Menu The Concentrations screen allows the user to select the output signal that is tied to the selected streaming data item The selected item is shown by lt after it In dual or auto range mode High or Low is displayed to indicate high or low concentrations Range NO is visible only in auto range mode e Inthe Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config gt Select Item gt Concentrations e Use j and to move the cursor up and down e Press to select a new choice The Other Measurements screen allows the user to select the output signal that is tied to the selected streaming data item The selected item is shown by lt after it e Inthe Main Menu choose Instrument Controls
176. n the measurement interface board include e Data communication with the motherboard e 24V and 120VAC power supply inputs e Fans and solenoid outputs e Cooler control e 120VAC outputs for the pump and temperature control board e Ozonator e Pressure sensor e Ambient temperature sensor e Temperature control board e PMT high voltage supply e Measurement input board e Permeation oven option The pressure sensor assembly consists of a board containing an instrumentation amplifier and a pressure transducer with a gas input fitting The pressure transducer output is produced by measuring the pressure difference between the sample gas pressure and ambient air pressure Model 427 Low Source Instruction Manual 8 7 System Description Electronics Temperatu re Control The temperature control board regulates and sets the temperature of the Board reaction chamber and converter The reaction chamber temperature is measured with a thermistor The voltage across the thermistor is fed to the main processor for use in calculating and displaying the reaction chamber temperature The voltage across the thermistor is also compared to a set point voltage and used to control that the reaction chamber heaters to maintain a constant temperature of 50 C Protective circuitry prevents over heating in the event of broken wires to the thermistor The converter temperature is measured by a conditioned thermocouple signal and fed back to the main pr
177. n the same way e Inthe Main Menu choose Alarms gt Select Concentration gt Min or Max e Use t and to increment or decrement the numeric value e Press to save set to value as actual value Min Trigger The Minimum Trigger screen allows the user to view and set the NO NOs and NO concentration low alarm trigger type to either floor or ceiling The minimum alarm may be programmed as a floor trigger alarm is triggered when the concentration falls below the minimum value or a ceiling trigger alarm is triggered when the concentration goes above the minimum value e Inthe Main Menu choose Alarms gt Select Concentration gt Min Trigger e Press to toggle and set to floor or ceiling Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 81 Operation Service Menu Service Menu The Service menu appears only when the instrument is in the service mode To put the instrument into service mode e Inthe Main Menu choose Instrument Controls gt Service Mode e Press to toggle and set the service mode on Advanced diagnostic functions are included in the service mode Meaningful data should not be collected when the instrument is in the service mode e Inthe Main Menu choose Service 3 82 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Service Menu PMT Voltage Adjustment The PMT Voltage Adjustment screen is used to manually adjust the PMT supply voltag
178. n the units of the selected parameter The current outputs are independent of the voltage outputs The current outputs are isolated from the instrument power and ground but they share a common return line Isolated GND The optional I O expansion board includes eight analog voltage inputs These inputs are used to gather measurement data from third party devices such as meteorological equipment The user may assign a label unit and a voltage to user defined unit conversion table up to 16 points All voltage inputs have a resolution of 12 bits over the range of 0 to 10 volts The instrument includes one power fail relay on motherboard and ten digital output relays on the digital output board These are reed relays rated for at least 500 mA 200VDC The power fail relay is Form C both normally opened and normally closed contacts All other relays are Form A normally opened contacts and are used to provide alarm status and mode information from the analyzer as well as remote control to other devices such as for controlling valves during calibration The user may select what information is sent out each relay and whether the active state is opened or closed Thermo Fisher Scientific Digital Inputs Serial Ports RS 232 Connection Thermo Fisher Scientific System Description I O Components Sixteen digital inputs are available which may be programmed to signal instrument modes and special conditions including e NO Measure
179. nal space can be present after the lt address gt If the received command does not satisfy the above formats or if the lt address gt does not match the Instrument Address the command is ignored This is a sample command to switch the instrument to zero mode instrument id 5 lt STX gt STO005 lt SP gt N lt CR gt This command DA initiates a data transfer from the instrument The instrument responds with measurement data which depends on the range mode and is listed in Measurements reported in response to DA command below The command structure for a data query command is as follows lt STX gt DA lt address gt lt ETX gt lt BCC gt The lt address gt is optional which means it can be left out completely The lt address gt if present must match the Instrument Address Additional space can be present after the lt address gt If the lt address gt is left out then no space is allowed in the query string A command with no address is also a valid command The following are the different acceptable formats of the DA command with Instrument Address 5 lt STX gt DA lt CR gt lt STX gt DA005 lt CR gt lt STX gt DA lt SP gt lt SP gt 5 lt ETX gt lt BCC gt lt STX gt DA lt ETX gt lt BCC gt The data query string is valid and will be answered with data transmission only if the command starts with lt STX gt which is followed by the characters DA and the lt address gt if present matches the Instrument Address a
180. nction 02 IIlegal Address 03 lllegal Data 04 Slave Device Failure Here is an example of a request to read registers 10 13 Request Field Name Function Starting Address Hi Starting Address Lo No of Registers HI No of Registers Lo Response Field Name Function Byte Count Register value Hi 10 Register value Lo 10 Register value Hi 11 Register value Lo 11 Register value Hi 12 Register value Lo 12 Register value Hi 13 Register value Lo 13 Hex 0x03 0x00 0x09 0x00 0x04 Hex 0x03 0x06 0x02 0x2B 0x00 0x00 0x00 0x64 0x00 0x64 The contents of register 10 are shown as the two byte values of 0x02 0x2B The contents of registers 11 13 are 0x00 0x00 0x00 0x64 and 0x00 0x64 respectively Thermo Fisher Scientific MODBUS Protocol Function Codes 0x05 Force Write Single The force write single coil function simulates the activation of the digital Coil inputs in the instrument which triggers the respective action This function code is used to set a single action to either ON or OFF The request specifies the address of the action to be forced Actions are addressed starting at zero Therefore action number is addressed as 0 The requested ON OFF state is specified by a constant in the request data field A value of OxFF00 requests the action to be ON A value of 0x0000 requests it to be OFE All other values are illegal and will not affect the output The normal response is a
181. nd lrec 100 5 Receive Irec 100 5 11 03 02 22 03 flags 54089100 no 8416E 1 nox 8458E 1 lono 6474E 1 lonox 6506E 1 pres 131 4 pmtt 53 1 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 11 04 02 22 03 flags 54089100 no 8421E 1 nox 8457E 1 lono 6477E 1 lonox 6505E 1 pres 131 5 pmtt 53 1 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 11 05 02 22 03 flags 54089100 no 8440E 1 nox 8456E 1 lono 6492E 1 lonox 6505E 1 pres 131 5 pmtt 53 2 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 11 06 02 22 03 flags 54089100 no 8432E 1 nox 8483E 1 lono 6486E 1 lonox 6525E 1 pres 133 0 pmtt 53 0 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 11 07 02 22 03 flags 54089100 no 8442E 1 nox 8383E 1 lono 6494E 1 lonox 6449E 1 pres 131 5 pmtt 53 1 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 where pmtv PMT Voltage pmtt PMT Temperature intt Internal Temperature rctt Reaction Chamber Temperature convt NO Converter Temperature ozonf Ozonator Flow pres Pressure erec format srec format Irec format These commands report the output format for long and short records and dynamic data in various formats such as ASCII without text ASCII with text or binary The example below shows the output format for long records is ASCII with text according to Table B 4 Send lrec format Receive lrec format 1 set erec format format set lrec format format set srec fo
182. nd the command is terminated with either lt CR gt with no checksum or lt ETX gt followed by the correct checksum lt BCC gt Thermo Fisher Scientific Thermo Fisher Scientific Geysitech Bayern Hessen Protocol Geysitech Commands Sample Data Reply String in response to Data Query Command DA In response to a valid data query command DA the instrument responds in the following format lt STX gt MD02 lt SP gt lt address gt lt SP gt lt measured valuel gt lt SP gt lt status gt lt SP gt lt SFKT gt lt SP gt lt address 1 gt lt SP gt lt measured value2 gt lt SP gt lt status gt lt SP gt lt SFKT gt lt ETX gt lt BCC gt The response uses the same command terminators as used by the received command i e if the received command was terminated with a lt CR gt the response is terminated with lt CR gt and if the command was terminated with a lt ETX gt lt BCC gt the response is terminated with lt ETX gt and the computed checksum lt BCC gt The 02 after the MD indicates that two measurements are present in the reply string a 03 for three measurements and so on this will also determine the length of the reply string lt address gt is the Instrument Address Each subsequent measurement attached to the response will have the lt address X gt where X keeps incrementing by 1 for each measurement included lt measured value gt is the concentration value in currently selected gas units represented as expon
183. nd as the keys functions change this is indicated by user defined labels in the lower part of the display so that the user knows what the keys are to be used for To change a soft key place the menu cursor gt on the item of the selected menu or screen you wish to set Press followed by the selected soft key within 1 second of pressing the right arrow key The edit soft key prompt will be displayed for configuration for the new label Note Not all menu items may be assigned to soft keys If a particular menu or screen item cannot be assigned the key assignment screen will not come up upon entering right arrow soft key combinations All items under the Service menu including the menu itself cannot be assigned soft keys Software Overview The Model 42 Low Source utilizes the menu driven software illustrated by the flowchart in Figure 3 3 The Power Up screen shown at the top of the flowchart is displayed each time the instrument is turned on This screen is displayed while the instrument is warming up and performing self checks After the warm up period the Run screen is automatically displayed The Run screen is the normal operating screen It displays the NO NO and NO concentrations depending on operating mode From the Run screen the Main Menu can be displayed by pressing The Main Menu contains a list of submenus Each submenu contains related instrument parameters and or functions This chapter describes e
184. nd front panel side trim ears EIA rack Mounted in an ElA style rack includes mounting slides and front panel ElA rack mounting ears Retrofit rack Mounted in a Thermo non ElA rack includes mounting slides and retrofit front panel rack mounting ears BAR NUT SHOULD BE Figure 9 2 Rack Mount Option Assembly 9 4 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Optional Equipment Mounting Options Figure 9 3 Bench Mounting Thermo Fisher Scientific Model 427 Low Source Instruction Manual 9 5 Optional Equipment Mounting Options Figure 9 4 EIA Rack Mounting 9 6 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Optional Equipment Mounting Options Figure 9 5 Retrofit Rack Mounting Thermo Fisher Scientific Model 427 Low Source Instruction Manual 9 7 Optional Equipment Mounting Options 9 8 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Appendix A Warranty Seller warrants that the Products will operate or perform substantially in conformance with Seller s published specifications and be free from defects in material and workmanship when subjected to normal proper and intended usage by properly trained personnel for the period of time set forth in the product documentation published specifications or package inserts Ifa period of time is not specified in Sellers product documentation published specifications or package inserts the warranty period s
185. ndex number and output variable and the active state assigned to output channel The example below reports the input 4 to be assigned an index number 11 corresponding to general alarm with the active state being open Send dout 4 Receive dout 4 11 GEN ALARM open set dout channel index state This command assigns digital output channel to be assigned to the action associated with index and assigns it an active state of state open or closed Send set dout 4 11 open Receive set dout 4 11 open ok Thermo Fisher Scientific Model 427 Low Source Instruction Manual B 41 C Link Protocol Commands I O Configuration B 42 Model 427 Low Source Instruction Manual dtoa channel This reports the outputs of the 6 or 12 digital to analog converters according to Table B 12 The example below shows that the DAC 1 is 97 7 full scale Send Receive dtoa 1 dtoa 1 97 7 Note All channel ranges are user definable If any customization has been made to the analog output configuration the default selections may not apply Table B 12 Default Output Assignment D to A 1 co CO NI MY o1Fy AI Wy N s NI list var aout list var dout list var din Function Voltage Output Voltage Output Voltage Output Voltage Output Voltage Output Voltage Output Current Output Current Output Current Output Current Output Current Output Current Output Single Range NO NO NO Not Assigned Not A
186. nformation 3 72 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Alarms Menu Thermo Fisher Scientific Operation Alarms Menu The alarms menu displays a list of items that are monitored by the analyzer If the item being monitored goes outside the lower or upper limit the status of that item will go from OK to either LOW or HIGH respectively If the alarm is not a level alarm the status will go from OK to FAIL The number of alarms detected is displayed to indicate how many alarms have occurred If no alarms are detected the number zero is displayed To see the actual reading of an item and its minimum and maximum limits move the cursor to the item and press a The zero span check and auto calibration screens are displayed if the zero span check or auto calibration options are enabled The motherboard status interface board status and I O expansion board status if installed indicates that the power supplies are working and connections are successful There are no setting screens for these alarms e Inthe Main Menu choose Alarms Model 427 Low Source Instruction Manual 3 73 Operation Alarms Menu Internal Temperature The Internal Temperature screen displays the current internal temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 8 to 47 C If the internal temperature reading goes beyond either the minimum or maximum ala
187. nse to a DATA ERec command It also displays though background changes alarm status The button when pressed triggers input from either a dialog box or a selection list There are five kinds of buttons B I L T and N Each line in the layout string corresponds to one line on the display The layout string describes each of the three major fields as well as translation mechanisms and corresponding commands The first field in the layout string is the text It is delimited by a The string up to the first will be read and inserted in the text field of the line This is followed by a possible string enclosed in quotes This is used to place a string into the value field The value source which is the item or word number in the DATA ERec response appears next This is followed by an optional bitfield designator The datum identified by the value source can be printed as a string s Model 427 Low Source Instruction Manual B 45 C Link Protocol Commands Record Layout Definition hexadecimal x decimal d or floating point f or binary b number Typically bitfield extractions are only done for decimal or hexadecimal numbers Floating point numbers can be followed with an optional precision specifier which will be used as an argument to printf s f format e g a field of 4 would be translated into the printf command of 3f Alternately the special character can precede the precision specifier this cau
188. nual iX Contents Chapter9 Optional Equipment eeseeseceeseesseeeeeeeseneeees 9 1 Internal Zero Span and Sample Valves ccsscceeseeeeeseeeeeees 9 1 Permeation Dryer Assembly sontenn s 9 2 Teflon Particulate Filtet mmesimama inaid ivedss 9 2 Ozone Particulate Filtet ar cutasssaeeesshautacusebandbaseewenenddemobedsnndtaess 9 2 INO 5 10 N O CONVENE ier a a N N 9 3 IO Expansion Board Assembly rruna ar ora 9 3 Terminal Block and Cable Kits vec eeccesseccceescceeeeeens 9 3 Mounting prions ij2sivasice cash n ete 9 4 Appendix A Warranty sasessssssusensnsunnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnan A 1 Appendix B C Link Protocol Comman cccsccsssessseeseseeeeeseseeeees B 1 Instrument Identification Number cece ceeeeccessececeeeeeneeees B 2 CST AEN ooa cea nessa E E eSEE B 2 MWieeas tire nve nioen T iain tan E E a B 9 PN AG a E ses eeucenectaco eee ses B 12 Dia nosio sax coin taachite cde inetd a B 16 Datalo UN oe sere E eased wees B 16 CAO ates lransed etea oases nasa eaten Gales Posed tata a B 23 IG yShL JIS Play casixcardetticuaae ecsaeseeevarndsssotaeteinae ares ecto B 26 Measurement Configuration eesecesseceeeseeeeeseeeeeseeeeeaeeees B 28 lard wate Conneuraion cesiune aaeag pices B 32 Communications Configuration ccesscesssceeeseeeeeseeeeeeeees B 35 WO CO NMC URAL ON gedieedctectanciaineonciapen A esata B 39 Record Layout ea ton asrasa B 44 Fo
189. nverter operation Possible Cause Unstable NO or NO source Clogged capillaries Clogged sample air filter Defective or low sensitivity PMT Defective input board Defective cooler Incorrect calibration source Leak in sample probe line Partially blocked sample capillary Hang up blockage in sample filter Questionable calibration gas Converter temperature too high or too low Low line voltage Molybdenum consumed Table 6 2 Troubleshooting Alarm Messages Alarm Message Alarm Cooler Temp High Cooler reads 80 C Thermo Fisher Scientific Possible Cause Check fan operation Check fan filter Bad unit Cooler does not hold set point of 3 ss Troubleshooting Troubleshooting Guides Action Replace Unplug power cord Clean or replace capillary Replace filter element Unplug power cord Remove PMT Install known good PMT Plug in power cord Check performance Replace board Check temperature less than 2 C at Tap 25 C Verify accuracy of multipoint calibration source gas Check for variable dilution Unplug power cord Clean or replace capillary Change element Verify accuracy Temperature should be approximately 325 C Check to see if line voltage is within specifications Replace Molybdenum converter cartridge Action Replace defective fan Clean or replace foam filter Replace cooler Replace cooler thermoelectric module insid
190. o Fisher Scientific Preventive Maintenance Pump Rebuilding 3 Re install the filters and fan guards Pump Rebuilding Use the following procedure to rebuild the pump Figure 5 2 To replace the pump See Pump Replacement in the Servicing chapter Equipment Required Pump Repair Kit Allen Wrench 3 mm Wrench 9 16 inch Needlenose Pliers Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter 1 Turn instrument off unplug the power cord and remove the cover Thermo Fisher Scientific Model 427 Low Source Instruction Manual 5 5 Preventive Maintenance Pump Rebuilding Top Plate Screws 4 Ja Top Plate Flapper Valve Bottom Plate Clamping Disk Diaphragm lt ____ Diaphragm Mounting Disk Figure 5 2 Rebuilding the Pump 2 Loosen fittings and remove both lines going to the pump 5 6 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Preventive Maintenance Pump Rebuilding To ensure proper reassembly mark the position of the pump head by using a pencil or other marker to draw a line from the top plate down across the bottom plate to the pump body Refer to this reference line when reassembling the pump head Remove four scre
191. o N O o A O N N gt N O o A N gt O N gt oO NZ O o A O N Signal Descriptions Ground RS485 to Interface Board RS485 to Interface Board Ethernet Output Ethernet Output Ethernet Input NC NC Ethernet Input NC NC Ground RS485 to Interface Board RS485 to Interface Board Ethernet Output Ethernet Output Ethernet Input NC NC Ethernet Input NC NC 5V 24V 24V Ground Ground Ground RS485 to Expansion Board RS485 to Expansion Board Thermo Fisher Scientific Troubleshooting Connector Pin Descriptions Table 6 3 Motherboard Connector Pin Descriptions continued Connector Reference Pin Signal Descriptions Label Designator SPARE DATA J4 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground 7 RS485 to Spare Board 8 RS485 to Spare Board 0 J5 1 Power Fail Relay N C Contact 2 Ground 3 TIL Input 1 4 TIL Input 2 5 Ground 6 TIL Input 5 7 TIL Input 7 8 TTL Input 8 9 TIL Input 10 10 Ground 11 TIL Input 13 12 TTL Input 15 13 Ground 14 Analog Voltage Output 1 15 Analog Voltage Output 3 16 Ground 17 Analog Voltage Output 5 18 Ground 19 Ground 20 Power Fail Relay COM 21 Power Fail Relay N O Contact 22 Ground 23 TIL Input 3 24 TIL Input 4 25 TIL Input 6 Thermo Fisher Scientific Model 42 Low Source Instruction Manual 6 9 Troubleshooting Connector Pin Descriptions Table 6 3 Motherboard Connector Pin Descriptions continued Connec
192. o NO Range Hi NO Coef Cal HiNO Coef Date Time Instrument Config Span Autocal Dilution Ratio Hi NO Range Hi NO Coef Cal Hi NO Coef Contact Info NO Conc Display Pixel Test Lo NO Range Hi NO Coef Cal Hi NO Coef NO Conc Restore User Defaults Set Custom Ranges Lo NO Coef Cal Lo NO Coef NO Conc Lo NO Coef Cal Lo NO Coef MB Status Lo NO Coef Cal Lo NO Coef Int Bd Status For Dual or Auto Range Only Cal Pressure Cal Pressure I O Exp Bd Status Reset User Cal Defaults Figure 3 3 Flowchart of Menu Driven Software Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 5 Operation Software Overview Power Up Screen The Power Up screen is displayed on power up of the Model 421 Low Source The Self Test is displayed while the internal components are warming up and diagnostic checks are performed Thermo SCIENTIFIC iSeries Run Screen The Run screen displays the NO NO3 and NO concentrations The status bar displays time and the status of the remote control interface and optional zero span solenoid valves if installed The word SAMPLE on the bottom left of the display indicates the analyzer has the span zero valve option and is in SAMPLE mode Other modes appear in the same area of the display as ZERO or SPAN For more information about the optional solenoid valves see Chapter 9 Optional Equipment When operating in dual or auto range mode two sets of coefficients are used t
193. o ON c Press gt to return to the Main Menu d Continue the procedure at Step 3 to access the Pressure Sensor Cal screen At the Pressure Sensor Cal screen press to select Zero The Calibrate Pressure Zero screen appears Wait at least 10 seconds for the zero reading to stabilize then press to save the zero pressure value Disconnect the pump from the pressure transducer Press to return to the Pressure Sensor Cal screen At the Pressure Sensor Cal screen press to select Span The Calibrate Pressure Span screen appears Wait at least 10 seconds for the ambient reading to stabilize use and to enter the known barometric pressure an press 4a qa to save the pressure value 10 Reconnect the instrument tubing to the pressure transducer 11 Install the cover Thermo Fisher Scientific Temperature Control Board Replacement A Ambient Temperature Thermo Fisher Scientific Calibration A Servicing Temperature Control Board Replacement Use the following procedure to replace the temperature control board Figure 7 8 Equipment Required Temperature control board Small flat blade screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconn
194. o calculate the NO NOj NO LOW and HIGH concentrations Also two averaging times are used one for each range The title bar indicates which range concentrations are displayed The words LOW RANGE CONCENTRATION on the top of the display indicates that the low concentration is displayed In dual range mode pressing the and arrows will toggle between high and low concentrations The example below shows the Run screen in single range mode 3 6 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Main Menu Operation Software Overview The Main Menu contains a number of submenus Instrument parameters and features are divided into these submenus according to their function The concentration appears above the main menu and submenus in every screen as shown below The Service menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode later in this chapter Use jand 4 to move the cursor up and down e Press to select a choice e Press to return to the Main Menu or gt to return to the Run screen Model 42i Low Source Instruction Manual 3 7 Operation Range Menu Range Menu The Range menu allows the operator to select the gas units NO NO NO ranges and to set the custom ranges The screens below show the range menu in single range mode and dual auto range modes For more info
195. o option is installed e Inthe Main Menu choose Service gt Dilution Ratio e Use gt and to move and change the value e Press to save set to value as actual value Display Pixel Test The Display Pixel Test is used to test the LCD display The display pixel test screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter e Inthe Main Menu choose Service gt Display Pixel Test e Press to begin test by turning all pixels on then toggle between off on or Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 95 Operation Service Menu Restore User Defaults The Restore User Defaults screen is used to reset the user calibration and configuration values to factory defaults The restore user defaults screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter Note When this item is selected the instrument will be automatically rebooted after restoring defaults a e Inthe Main Menu choose Service gt Restore User Defaults e Press to warn and enable restore with gt e Press to overwrite all user settings with factory default values 3 96 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Password Password The Password menu allows
196. o the pressure sensor should be disconnected so the sensor is reading ambient pressure before performing the span calibration The operator should use an independent barometer to measure the ambient pressure and enter the value on this screen before calibrating e Inthe Main Menu choose Service gt Pressure Calibration gt Span e Use gt and to move and change the value e Press to save set to value as actual value TH Fe 5 EEE De B FILES bo LAL LE ts CHAHGE VALUE Restore Default Pressure The Restore Default Pressure Calibration screen allows the user to reset the Calibration pressure calibration configuration values to factory defaults e Inthe Main Menu choose Service gt Pressure Calibration gt Set Defaults e Press to warn user and enable restore with gt e Use to overwrite pressure sensor calibration parameters with factory default values when pressed after a 3 86 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Input Board Calibration Manual Input Calibration Thermo Fisher Scientific A A Operation Service Menu The Input Board Calibration menu is used to initiate a calibration of the input A D stages The input board calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode on page WARNING This adjustment should only be performed by an inst
197. o value where value is a floating point number representing converter temperature alarm limits in degrees C The example below sets the converter temperature alarm maximum value to 640 0 C Send set alarm converter temp max 640 Receive set alarm converter temp max 640 ok Model 427 Low Source Instruction Manual B 13 C Link Protocol Commands Alarms B 14 Model 42i Low Source Instruction Manual alarm cooler temp min alarm cooler temp max These commands report the cooler temperature alarm minimum and maximum value current settings The example below reports that the cooler temperature alarm minimum value is 10 0 C Send alarm cooler temp min Receive alarm cooler temp min 10 0 deg C set alarm cooler temp min value set alarm cooler temp max value These commands set the cooler temperature alarm minimum and maximum values to value where value is a floating point number representing cooler temperature alarm limits in degrees C The example below sets the cooler temperature alarm maximum value to 2 0 C Send set alarm cooler temp max 2 Receive set alarm cooler temp max 2 ok alarm internal temp min alarm internal temp max These commands report the internal temperature alarm minimum and maximum value current settings The example below reports that the internal temperature alarm minimum value is 15 0 C Send internal temp alarm min Receive internal temp alarm min 15 0 deg C set internal temp alarm min v
198. oard to the input box and remove the input board 6 Install the input board by following the previous steps in reverse Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 27 Servicing Input Board Calibration 7 28 Input Board Calibration A Model 42i Low Source Instruction Manual 7 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter 8 Perform an input board calibration See the Input Board Calibration procedure that follows After replacing the input board use the following procedure to calibrate the input board WARNING The service procedures in this manual are restricted to qualified service representatives 1 From the Main Menu press to scroll to Service gt press gt to scroll to Input Board Calibration gt and press The Input Board Calibration screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press 4g to scroll to Instrument Controls gt press gt to scroll to Service Mode gt and press The Service Mode screen appears b Press to toggle the Service Mode to ON c Press gt to return to the Main Menu d Continue the procedure at the beginning of Step 1 to access the Set PMT Voltage screen 2 At the Input Board Calibration screen press to select Manual Input Cal
199. ocation for short records B 21 Simulates pressing menu pushbutton B 26 Reports sets which measurement mode is active B 31 Reports operating mode in local service or remote B 39 Reports current NO concentration B 10 Reports sets current NO background B 25 Reports sets current NO coefficient B 24 Reports sets NO span gas concentration B 25 Reports sets number of long records stored in memory B 21 Reports sets number of short records stored in memory B 21 Reports current NO concentration B 10 Reports sets current NO coefficient B 24 Reports sets NO span gas concentration B 25 Reports current NO concentration B 10 Reports sets current NO background B 25 Reports sets current NO coefficient B 24 Reports sets NO span gas concentration B 25 Reports sets ozonator on or off B 33 Reports current ozonator flow B 34 Reports sets ozonator safety on or off B 34 Reports status of ozonator and safety B 34 Reports current perm gas temperature B 11 Reports sets PMT status on or off B 34 Reports temperature of the PMT cooler same as cooler B 10 temperature Reports current PMT voltage B 11 Reports current reaction chamber pressure B 11 Reports sets pressure used for calibration B 26 Reports sets pressure compensation on or off B 31 Model 42i Low Source Instruction Manual B 7 C Link Protocol Commands Model 427 Low Source Instruction Manual Table B 1 C Link Protocol Commands Command program no push range mode range no range no2 range n
200. ocessor to be used to display and control the converter temperature The temperature control board receives control signals from the main processor software to control the converter heater to the desired set point Protective circuitry prevents over heating in the event of broken wires to the thermocouple or processor faults PMT Power Supply The PMT power supply produces high voltage to operate the photo Assembly multiplier tube used in the measurement system The output voltage is adjustable from approximately 600 to 1200 volts under software control Input Board Assembly The input board accepts the current signal from the PMT and converts it to a voltage which is scaled by a factor of approximately 1 10 or 100 depending on the full scale range of the NO channel The scaled voltage signal is converted to a frequency and sent to the microprocessor The input board includes a test signal that can be activated under software control The test signal is injected at the first stage of the input board in parallel with the PMT input This allows the input board and the connection to the processor system to be tested and calibrated without using the PMT Digital Output Board The digital output board connects to the motherboard and provides solenoid driver outputs and relay contact outputs to a connector located on the rear panel of the instrument Ten relay contacts normally open with power off are provided which are electrically isolated from e
201. ogic State screen is used to change the I O relay to either normally open or normally closed e Press to toggle and set the logic state between open or closed Instrument State The Instrument State submenu allows the user to select the instrument state that is tied to the selected relay output A submenu lists signal types of either alarms or non alarm to choose from e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Settings gt Select Relay gt Instrument State Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 51 Operation Instrument Controls Menu Alarms The Alarms status screen allows the user to select the alarm status for the selected relay output The selected item is shown by lt after it Items displayed are determined by the options installed e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Settings gt Select Relay gt Instrument State gt Alarms e Use t and to scroll through a list of choices e Press to save the new selection for the relay Non Alarm The Non Alarm status screen allows the user to select the non alarm status for the selected relay output The selected item is shown by lt after it Items displayed are determined by the options installed e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Settings gt Select Relay gt Instrument
202. ompensation is off the first line of the display shows the factory standard pressure of 150 mmHg e Inthe Main Menu choose Instrument Controls gt Pressure Compensation e Press to toggle and set the pressure compensation on or off Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 63 Operation Instrument Controls Menu Screen Contrast The Screen Contrast screen is used to change the contrast of the display Intensities between 0 and 100 in increments of 10 are available Changing the screen contrast may be necessary if the instrument is operated at extreme temperatures e Inthe Main Menu choose Instrument Controls gt Screen Contrast e Use and to increment or decrement the screen contrast e Press to accept a change Service Mode The Service Mode screen is used to turn the service mode on or off The service mode locks out any remote actions and includes parameters and functions that are useful when making adjustments or diagnosing the Model 42i Low Source For more information about the service mode see Service Menu later in this chapter Note The service mode should be turned off when finished as it prevents remote operation e Inthe Main Menu choose Instrument Controls gt Service Mode e Press to toggle and set the service mode on or off 3 64 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Diagnostics Menu Date Time The
203. on Table 6 1 Troubleshooting General Guide Malfunction Does not start up No output signal or very low output No output signal Calibration drift Possible Cause No power Power supply Digital electronics No sample gas reaching the analyzer Blocked sample capillary No ozone reaching the reaction chamber Disconnected or defective input or high voltage supply Analyzer not calibrated Defective 15 volt Dryer to ozonator depleted Line voltage fluctuations Defective pump Action Check that the instrument Is plugged into the proper source 115 or 220 VAC 50 or 60H7 Check instrument fuses Check voltages using a digital voltmeter Unplug power cord Check that all boards are seated properly Unplug power cord Remove one board Install known good board Repeat until faulty board is detected Check input sample flow Unplug power cord Clean or replace capillary Check the Instrument Control menu to see if the ozonator is ON If it is ON check dry alr supply Unplug power cord Check that cables are connected properly Check cable resistance Recalibrate Check supply voltages Diagnostics Menu Replace Check to see if line voltage is within specifications Rebuild pump Thermo Fisher Scientific Table 6 1 Troubleshooting General Guide continued Malfunction Excessive noise Non linear response Excessive response time Improper co
204. on Board Replacement procedure in this chapter 3 Disconnect the digital output board ribbon cable from the motherboard 4 Using the nut driver remove the two standoffs securing the board to the rear panel Figure 7 21 5 Pop off the digital output board from the mounting studs and remove the board 6 To install the digital output board follow previous steps in reverse Use the following procedure to replace the motherboard Figure 7 20 Equipment Required Motherboard Philips screwdriver Thermo Fisher Scientific Measurement Interface Board Replacement A Thermo Fisher Scientific Servicing Measurement Interface Board Replacement Nut driver 3 16 inch Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the I O expansion board optional if used See the I O Expansion Board Replacement procedure in this chapter 3 Remove the digital output board See the Digital Output Board Replacement procedure in this chapter 4 Unplug all connectors from the motherboard Note connector locations to facilitate reconnection 5 Using the nut driver remove the six standoffs securing the board to the rear panel 6 Pop off the motherboard from motherboard support bracket and
205. on page 7 32 Pressure Transducer Assembly Replacement on page 7 33 Pressure Transducer Calibration on page 7 35 Temperature Control Board Replacement on page 7 37 Ambient Temperature Calibration on page 7 37 Fuse Replacement on page 7 39 Scrubber Replacement on page 7 39 I O Expansion Board Optional Replacement on page 7 40 Digital Output Board Replacement on page 7 42 Motherboard Replacement on page 7 42 Measurement Interface Board Replacement on page 7 43 Front Panel Board Replacement on page 7 45 LCD Module Replacement on page 7 46 Service Locations on page 7 47 Thermo Fisher Scientific Servicing safety Precautions Safet Precautions Read the safety precautions before beginning any procedures in this chapter yp g g any p p WARNING The service procedures in this manual are restricted to qualified service representatives If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired a CAUTION Carefully observe the instructions in each procedure Avoid contact with converter heated components Allow converter to cool to room temperature before handling converter components Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 3 Servicing safety Precautions 7 4 Model 427 Low Source Instruction Manual Equipment Damage Some internal components can be
206. ore calibration in order to obtain the most accurate information 3 Set instrument parameters such as operating ranges and averaging times to appropriate settings For more information about instrument parameters see the Operation chapter 4 Before beginning actual instrument monitoring perform a multipoint calibration as described in the Calibration chapter Model 427 Low Source Instruction Manual 2 5 Installation Startup 2 6 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Chapter 3 Operation This chapter describes the front panel display front panel pushbuttons and menu driven software e Display on page 3 2 describes the LCD graphics display e Pushbuttons on page 3 3 describes the various front panel pushbuttons and the expected key actions for each e Software Overview on page 3 4 describes the menu driven software and submenus e Range Menu on page 3 8 describes the gas units NO NO NO ranges and custom ranges e Averaging Time on page 3 17 describes the averaging period applied to NO NO gt and NO measurements e Calibration Factors Menu on page 3 18 describes the calibration factors used to correct NO NO and NO measurement readings e Calibration Menu on page 3 23 describes calibration of zero and span e Instrument Controls Menu on page 3 30 describes the instrument hardware control and configuration e Diagn
207. ors off the fan 4 Remove the four fan mounting screws and remove the fan 5 Install a new fan following the previous steps in reverse Figure 7 7 Replacing a Fan Use the following procedure to replace the PMT cooler and reaction chamber assembly see Figure 7 8 Equipment Required PMT cooler Wrench 7 16 inch Wrench 9 16 inch Nut driver 1 4 inch Philips screwdriver Wire cutters Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Model 427 Low Source Instruction Manual 7 13 Servicing PMT Cooler and Reaction Chamber Assembly Replacement 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then p p p proceed to the next step below 2 Disconnect the reaction chamber connector from the temperature control board 3 Snap off the temperature control board from the board mounts 4 Remove the four screws securing the cooler shroud and remove the shroud Temperature Control Board q lt t Cooler Shroud i t J Gi lt Reaction Chamber Ka To COOLER on Measurement Interface Board Ng See a S BENCH on F F T y i 7 t y D 3 O O O D r o CO O o my OQ Captive Screws 4 Two Not Shown
208. ostics Menu on page 3 65 describes the diagnostic information and functions e Alarms Menu on page 3 73 describes a list of items that are monitored by the analyzer e Service Menu on page 3 82 describes service related menu items e Password on page 3 97 describes how to enter change a password lock and unlock the instrument Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 1 Operation Display 3 2 Display The 320 x 240 graphics liquid crystal display LCD shows the sample concentrations instrument parameters instrument controls help and error messages Some menus contain more items than can be displayed at one time For these menus use and to move the cursor up and down to each item Model 42i Low Source Instruction Manual Figure 3 1 42i Low Source Front Panel Display CAUTION If the LCD panel breaks do not let the liquid crystal contact your skin or clothes If the liquid crystal contacts your skin or clothes wash it off immediately using soap and water a Thermo Fisher Scientific Operation Pushbuttons Pushbuttons The Pushbuttons allow the user to traverse the various screens menus Thermo Fisher Scientific Figure 3 2 Front Panel Pushbuttons Table 3 1 Front Panel Pushbuttons Soft Keys gt Run Menu EDET CSECSEN gt Left Right Enter The soft
209. otocol Header MBAP is used to identify the message This header consists of the following components Transaction Identifier 2 Bytes 0x0000 to OxFFFF Passed back in response Protocol Identifier 2 Bytes 0x00 MODBUS protocol Length 2 Bytes 0x0000 to OxFFFF Number of following bytes Unit Identifier 1 Byte 0x00 to OxFF Passed back in response C 2 A i Low Source Instruction Manual Thermo Fisher Scientific Function Code Data Error Check Function Codes 0x01 0x02 Read Coils Thermo Fisher Scientific Read Inputs MODBUS Protocol Function Codes A Slave address is not required in MODBUS over TCP IP because the higher level protocols include device addressing The unit identifier is not used by the instrument The function code is a single byte in length The following function codes are supported by the instrument Read Coils 0x01 Read Inputs 0x02 Read Holding Registers 0x03 Read Input Registers 0x04 Force Write Single Coil j 0x05 Read Exception Status 0x07 If a function code is received that is not in this list and invalid function exception is returned The data field varies depending on the function For more description of these data fields see Function Codes below In MODBUS over Serial an error check is included in the message This is not necessary in MODBUS over TCP IP because the higher level protocols ensure error free transmission The error check is a two byte 16 bit CRC value
210. ough the vent The NO and NO concentrations calculated in the NO and NO modes are stored in memory The difference between the concentrations is used to calculate the NO concentration The Model 427 Low Source outputs NO Thermo Fisher Scientific Introduction Specifications NOs and NO concentrations to the front panel display the analog outputs and also makes the data available over the serial or ethernet connection Display Analog Outputs Digital Outputs Flow Oz Cleanser Communication Protocols Air Dryer Switch Ai ee Capillary Ozonator Electronics NO Mode Reaction aa Chamber ensor Mode tr PMT Sample x Solenoid ee Capillary NH Scrubber ee NO NO z Converter Pressure NO Mode Transducer x Exhaust Q Pump Oa Converter Scrubber Figure 1 1 Model 427 Low Source Flow Schematic Specifications Table 1 1 Model 42i Low Source Specifications Preset ranges 0 0 2 0 5 1 2 5 10 20 50 100 ppm 0 0 5 1 2 5 10 20 50 100 150 mg m Extended ranges 0 1 2 5 10 20 50 100 200 500 ppm 0 2 5 10 20 50 100 200 500 750 mg m Custom ranges 0 0 2 to 100 ppm 0 1 to 500 ppm in extended ranges 0 0 5 to 150 mg m 0 2 to 750 mg m in extended ranges Zero noise 0
211. ow Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Servicing PMT High Voltage Power Supply Replacement PMT high voltage power supply Nut driver 1 4 inch Philips screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect the two PMT high voltage supply cables 3 Loosen the two retaining screws securing the assembly bracket to the floor plate and slide the assembly towards the rear slightly and lift it off the base screws Assembly Bracket Screws 2 Input Box Assembly Figure 7 10 Replacing the PMT HVPS 4 Loosen two screws on the input box assembly and lift the input box assembly off the power supply Model 427 Low Source Instruction Manual 7 17 Servicing PMT Voltage Adjustment 7 18 PMT Voltage Adjustment A Model 42i Low Source Instruction Manual 5 Remove the four screws securing the power supply to the bracket and remove the power supply 6 To install the power supply follow the previous steps in reverse 7 Recalibrate the instrument Refer to the calibration procedures in the cc bb Calibration chapter Use the following procedure to adjust the PMT voltage after switching from standard to extended ranges or vice versa
212. ox react temp relay stat ri right ru run sample save save params sc screen sp field span Sr srec srec format srec layout srec mem size srec per stream per stream time temp comp time Up Zero Description Reports analyzer program number Simulates pressing a key on the front panel Reports sets current range mode Reports sets current NO range Reports sets current NO range Reports sets current NO range Reports current reaction chamber temperature Reports sets relay logic status to for the designated relay s Simulates pressing right pushbutton Simulates pressing run pushbutton Sets zero span valves to sample mode Stores parameters in FLASH Stores parameters in FLASH C series legacy command that reports a generic response Use iscreen instead Reports sets item number and name in scratch pad list Sets zero span valves to span mode Reports last short record stored Reports maximum number of short records Reports sets output format for short records ASCII or binary Reports current layout of short record data Reports maximum number of short records Reports sets short record logging period Reports sets current set time interval for streaming data Reports sets a time stamp to streaming data or not Reports sets temperature compensation on or off Reports sets current time 24 hour time Simulates pressing up pushbutton Sets zero span valves to zero mode Page B 39 B 26 B 30 B 28 B 28
213. press c Press to return to the Run screen Select the RANGE soft key if available or locate this function in the menu to display the Range screen Select NO range and push the AVG soft key to display the Averaging Time screen It is recommended that a higher averaging time be used for best results For more information about the ranges or averaging time see the Operation chapter Note The averaging time should be less than the zero duration and less than the span duration Set the calibration pressure to the current reactor pressure a Push choose gt Calibration Factors gt Cal Pressure b Use to increment decrement the value to match the current reactor pressure and press to save the new calibration pressure value Verify that any filters used during normal monitoring are also used during calibration Connect the analog digital outputs to a strip chart recorder s or PC s Note that with a Model 427 Low Source equipped with internal zero span and sample valves the ZERO and SPAN ports should give identical responses to the sample port when test gases are introduced The user should calibrate the Model 427 Low Source using the sample port to introduce the zero and span gas sources After calibration the zero and span sources should be plumbed to the appropriate ports on the rear panel of the Model Thermo Fisher Scientific Calibration Calibration 42i Low Source and then reintrodu
214. r panel Allow the instrument to sample the calibration gas until a stable reading is obtained on the NO NO and NO channels If the calibration has changed by more than 10 a new multipoint calibration curve should be generated When the calibration check has been completed record the NO NO and NO values Reconnect the analyzer sample line to the SAMPLE bulkhead Model 427 Low Source Instruction Manual 4 17 Calibration Zero and Span Check 4 18 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Safety Precautions Thermo Fisher Scientific A A Chapter5 Preventive Maintenance This chapter describes the periodic maintenance procedures that should be performed on the instrument to ensure proper operation Since usage and environmental conditions vary greatly you should inspect the components frequently until an appropriate maintenance schedule is determined This chapter includes the following maintenance information and replacement procedures e Safety Precautions on page 5 1 e Replacement Parts on page 5 2 e Cleaning the Outside Case on page 5 2 e Ozonator Air Feed Drying Column Replacement on page 5 2 e Capillaries Inspection and Replacement on page 5 2 e Thermoelectric Cooler Fins Inspection and Cleaning on page 5 4 e Fan Filters Inspection and Cleaning on page 5 4 e Pump Rebuilding on page 5 5 Read the safety precautions before beginnin
215. r subsequent calibrations where linearity can be assumed these curves may be checked with a three point calibration consisting of a zero point NO and NO concentrations of approximately 80 of the URL and an intermediate concentration 5 Adjust the GPT system to generate a NO concentration near 90 of the URL of the instrument range selected 6 Sample this NO concentration until the NO and NO responses have stabilized then measure and record the NO concentration as NO oric 7 Adjust the O generator in the GPT system to generate sufficient O3 to produce a decrease in the NO concentration equivalent to about 80 Model 427 Low Source Instruction Manual 4 9 Calibration Calibration 4 10 Model 42i Low Source Instruction Manual 10 11 of the URL of the NO range The decrease must not exceed 90 of the NO concentration determined in Steps 5 and 6 above When the analyzer responses stabilize record the resultant NO concentrations as NO REM From the Main Menu choose Calibration gt Calibrate NO Coefficient The NO line of the Calibrate NO screen displays the current NO concentration The SPAN CONC line of the display is where you enter the NO calibration gas concentration Set the NO calibration gas concentration to reflect the sum of the following the NO concentration generated by GPT NO opic NO gE and any NO impurity Use gt to move the cursor left and right and use to increm
216. readings The calculation begins by subtracting the appropriate electronic offset from the seven second count accumulation Following this correction the raw accumulated counts are scaled according to the gain setting of the input board Next the uncorrected NO and NO values are determined according to a unique averaging algorithm which minimizes errors resulting from rapidly changing gas concentrations This algorithm results in NO and NO values which are stored in RAM in a circular buffer that holds all the ten second data from the previous five minutes This data is averaged over the selected time interval which can be any multiple of ten between 10 and 300 the manual modes have additional intervals of 1 2 and 5 seconds The background values for NO and NO which are corrected for temperature are subtracted from their respective averages The NO reading is corrected by the stored span factor and by the temperature factor The NO reading is partially corrected by the span factor temperature factor and balance factor The corrected NO value is subtracted from the partially corrected NO value to yield an uncorrected NO value The NO value is then corrected for converter efficiency to give a corrected NO reading Finally the corrected NO reading is added to the corrected NO reading to yield a fully corrected NO value The front panel display serial and Ethernet data ports and analog outputs are the means of communicating the
217. rec List of choices include off 1 5 15 30 and 60 minutes default e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Configure Datalogging gt Logging Period Min e Use t and to scroll through a list of choices e Press to set the logging period ts CHONGE VALUE SAVE Memory Allocation Percent The Memory Allocation Percent screen is used to select the percentage of each record type for both short records and long records Percentages between 0 and 100 are available in increments of 10 Changing this value results in log erasure for both short records and long records e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Configure Datalogging gt Memory Allocation e Use and to scroll through a list of choices 3 40 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu e Press to set the percentage for both record types and proceed to the erasure warning screen e Press gt to confirm change Data Treatment The Data Treatment screen is used to select the data type for the selected record whether the data should be averaged over the interval the minimum or maximum used or the current value logged Data treatment doesn t apply to all data just to the concentration measurement All other data points log the current value at the end of the interval e Inthe Main Menu choose
218. records clr srecs contrast conv set temp conv temp cooler temp copy Irec to sp copy sp to Irec copy sp to srec copy sp to stream copy srec to sp copy stream to sp custom date default params dhcp diag volt iob Table B 1 C Link Protocol Commands Description Reports sets averaging time Reports sets current baud rate Sets auto calibrates high range NO coefficient Sets auto calibrates high range NO coefficient Sets auto calibrates high range NO coefficient Sets auto calibrates low range NO coefficient Sets auto calibrates low range NO coefficient Sets auto calibrates low range NO coefficient Sets auto calibrates NO background Sets auto calibrates NO coefficient Sets auto calibrates NO coefficient Sets auto calibrates NO background Sets auto calibrates NO coefficient Sets current measured pressure as pressure during calibration for pressure Compensation Clears away only long records that have been saved Clears away all logging records that have been saved Clears away only short records that have been saved Reports sets current screen contrast Reports sets temperature setpoint for NO converter Reports current NO converter temperature Reports temperature of PMT cooler same as PMT temperature Sets copies current Irec selection into the scratch pad Sets copies current selections in scratch pad into Irec list Sets copies current selections in scratch pad into srec list Sets copies current selections in scra
219. remove the motherboard 7 To install the motherboard follow previous steps in reverse Use the following procedure to replace the measurement interface board Figure 7 22 Equipment Required Measurement interface board Philips screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a Model 427 Low Source Instruction Manual 7 43 Servicing Measurement Interface Board Replacement 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then p p p proceed to the next step below 2 Unplug all connectors Note the locations of the connectors to facilitate reconnection 3 Pop off the measurement interface board from the four mounting studs and remove the board 4 To install the measurement interface board follow previous steps in reverse 5 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter rd Sa 8 E A f Se ya i par a Mounting Studs 4 EM TN eA Si iar g R we a Ge 7 J Dia wW s A a AA te Bi F as La ke p N i E E temi S sL oO _ l i 7 T a F Wa o KF n i a A F we SA AE f E H G a w oN done ra g Pe a ka pati z Fai T ia Ed Pa F il Bale 8 en 4 z D a a 1
220. rm limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu e Inthe Main Menu choose Alarms gt Internal Temp Min and Max Internal The Minimum Internal Temperature alarm limit screen is used to change Temperature Limits the minimum internal temperature alarm limit The minimum and maximum internal temperature screens function the same way e Inthe Main Menu choose Alarms gt Internal Temp gt Min or Max e Use and to increment or decrement the numeric value e Press to save set to value as actual value 3 74 Model 42i Low Source Instruction Manual Thermo Fisher Scientific Operation Alarms Menu Chamber Temperature The Chamber Temperature screen displays the current chamber temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 47 to 51 C If the chamber temperature reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu e Inthe Main Menu choose Alarms gt Chamber Temp Min and Max Chamber The Minimum Chamber Temperature alarm limit screen is used to change Temperature Limits the minimum chamber temperature alarm limit The minimum and maximum internal temperature screens function the same way e Inthe Main Menu choose Alarms gt Chamber Temp gt Min or Max e Use and to increment or decrement the numeric value
221. rmat Specifier for ASCII Responses ccesseeeeeeseeeeeees B 44 Format Specifier for Binary Responses eesscceeeseeeeeees B 44 Format Specifier for Front Panel Layout 0 0 0 eeeeeeeeees B 45 Appendix C MODBUS Protocol 00 ce csesceeseaeseseesesesaeseseneeeeaeseeenes C 1 Serial Communication Parameters cccsseecccesececeeceeneeees C 2 TCP Communication Parameters ccccccsseccssscessceesceessceee C 2 Application Data Unit Definition cee eeeeeneeeeeeneeeeeees C 2 UAC COTY CO GSS eonenn a TORE C 3 MODBUS Commands Supported eeeseeeeeseeeeeteeeeneeeeees C 8 Appendix D Geysitech Bayern Hessen Protocoll sssessseeseneen D 1 X Model 42i Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Figures Figures Model 42i Low Source Flow Schematic csccccessceeestteeeeees 1 3 Remove the Packing Material cveinasdsehovsachencdsaevadavnotonnteeeveee 2 2 Remove the SHippiie Screws inanon oii 2 2 Model 42i Low Source Rear Panel cccccccssseeeesteeeeesteeeeeees 2 4 Atmospheric Dump Bypass Plumbing ssseeeseeeeeeeseereeereeersse 2 4 42i Low Source Front Panel Display ssscseeeessesssssssssseresseesse 3 2 Front Panel Pushbutton sicosccrneiii n i a 3 3 Flowchart of Menu Driven Software sssssssssssssssseesesssresseresssees 3 5 Pin Out of Rear Panel Connector in Single Range Mode 3 9 Pin Out of Rear Panel Connector in
222. rmat format These commands set the output format for long and short records and dynamic data according to Table B 4 The example below sets the long record output format to ASCII with text Send set lrec format 1 Receive set lrec format 1 ok Model 427 Low Source Instruction Manual B 19 C Link Protocol Commands Datalogging Table B 4 Record Output Formats Format Output Format 0 ASCII no text 1 ASCII with text 2 binary data erec layout Irec layout srec layout These commands reports the layout string indicating the data formats for data that is sent out in response to the erec lrec srec and related commands The example below shows a typical response For details on how to interpret the strings see Record Layout Definition later in this appendix Send lrec layout Receive Irec layout s s lx fF f AF f f AF FE SF AF f f AF EDLE a flags no nox hino hinox pres pmtt intt rctt convt smplf ozonf pmtv Irec mem size srec mem size These commands report the long and short records that can be stored with the current settings and the number of blocks reserved for long and short records To calculate the number of short records per block add 2 to the number of records and then divide by the number of blocks The example below shows that 7 blocks were reserved for long records and the maximum number of long records that can be stored in memory is 1503 Send lrec mem size Receive lrec mem size 1503 r
223. rmation about the single dual and auto range modes see Single Range Mode Dual Range Mode and Auto Range Mode below e Inthe Main Menu choose Range Single Range Mode In the single range mode the NO NO3 and NO channels each have one range one averaging time and one span coefficient By default the three analog outputs are arranged on the rear panel connector as shown in Figure 3 4 See Table 3 2 for channels and pin connections Single range mode may be selected from the Single Dual Auto Select in the Service Menu later in this chapter 3 8 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Range Menu 33 ANALOG VOLTAGE OUTPUTS 37 elelelslelelslelelelslelel se s 2 oooo000000000000000 Figure 3 4 Pin Qut of Rear Panel Connector in Single Range Mode Table 3 2 Default Analog Outputs in Single Range Mode Channel Pin Description 1 14 NO Analog Output 2 33 NO Analog Output 30 15 NO Analog Output A BA Nore 5B WT Nore 6 36 None Ground 16 18 19 35 37 Signal Ground Note All channels are user definable If any customization has been made to the analog output configuration the default selections may not apply Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 9 Operation Range Menu Dual Range Mode Inthe dual range mode there are two independent channels defined for each compound being
224. rument service technician e Inthe Main Menu choose Service gt Input Board Calibration The Manual Input Calibration screen is used to do a manual calibration of the input board A D stages WARNING This adjustment should only be performed by an instrument service technician Note The measurement system and the PMT are both shut off inside this screen a e Inthe Main Menu choose Service gt Input Board Calibration gt Manual Input Cal e Press to leave warning screen e Make a note of the frequency at gain of 1 e Use and gt to change the gain between 10 and 100 Use and 4 to increment or decrement the D A counts so the frequency at gain 100 is equal to the frequency at gain 1 Model 427 Low Source Instruction Manual 3 87 Operation Service Menu e Press to save new input board calibration IHE a e CHG GAIN Automatic Input Calibration The Automatic Input Calibration screen is used to do a automatic calibration of the input board A D stages WARNING This adjustment should only be performed by an instrument service technician Note The measurement system and the PMT are both shut off inside this screen a e In the Main Menu choose Service gt Input Board Calibration gt Automatic Input Cal e Press to leave warning screen and begin automatic calibration 3 88 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Servi
225. s The example below reports that the NO range is set to 100 000 ppb extended ranges Send range no Receive range no 6 1000E 2 ppb set range no selection set range no2 selection set range nox selection set high range no selection set high range no2 selection set high range nox selection set low range no selection set low range no2 selection set low range nox selection These commands select the NO NO and NO full scale ranges according to Table B 6 and B 7 The example below sets the NO full scale to 100 000 ppb extended ranges Send set range nox 6 Receive set range nox 6 ok Thermo Fisher Scientific C Link Protocol Commands Measurement Configuration Table B 6 Standard Ranges Thermo Fisher Scientific Selection ppb ppm g m mg m 0 200 0 2 500 0 5 1 500 0 5 1 000 1 0 2 1 000 1 0 2 000 2 0 3 2 000 2 0 5 000 5 0 4 5 000 5 0 10 000 10 0 5 10 000 10 0 20 000 20 0 6 20 000 20 0 50 000 50 0 7 50 000 50 0 100 000 100 0 8 100 000 100 0 150 000 150 0 9 C1 C1 C1 C1 10 C2 C2 C2 C2 11 3 C2 C3 C3 Table B 7 Extended Ranges Selection ppb ppm g m mg m 0 1 000 1 0 2 000 2 0 1 2 000 2 0 5 000 5 0 2 5 000 5 0 10 000 10 0 3 10 000 10 0 20 000 20 0 4 20 000 20 0 50 000 50 0 5 50 000 50 0 100 000 100 6 100 000 100 200 000 200 7 200 000 200 500 000 500 8 500 000 500 750 000 750 9 Ci Ci C1 C1 10 C2 C2 C2 C2 11 C3 C3 C3 C3 custom range range 1 2 3 This command reports the user defined value of
226. s gt Gateway e Use gt and to move and change the value of the gateway address e Press to save the new address The host name screen is used to edit the host name When DHCP is enabled this name is reported to the DHCP server e Inthe Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt Host Name e Use and to move the cursor or change between the edit field and the alpha page e Press to save the new letter in the alpha table or save the new alpha page Model 42i Low Source Instruction Manual 3 49 Operation Instrument Controls Menu I O Configuration The I O Configuration menu deals with configuration of the analyzer s I O system The analog input configuration is displayed if the I O expansion board option is installed e Inthe Main Menu choose Instrument Controls gt I O Configuration Output Relay Settings The Output Relay Settings menu displays a list of the 10 analog output relays available and allows the user to select the logic state and instrument parameter for the relay selected Note The digital outputs may take up to one second after the assigned state occurs to show up on the outputs e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Settings 3 50 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Operation Instrument Controls Menu Logic State The L
227. s protocols C Link MODBUS and streaming data all user selectable RJ45 connector for 10Mbs Ethernet connection static or dynamic TCP IP addressing In non condensing environments Performance specifications based on operation in 15 35 C range Thermo Fisher Scientific Lifting A Unpacking and Thermo Fisher Scientific Inspection Chapter 2 installation Installing the Model 42i Low Source includes the following recommendations and procedures e Lifting on page 2 1 e Unpacking and Inspection on page 2 1 e Setup Procedure on page 2 3 e Startup on page 2 5 When lifting the instrument use procedure appropriate to lifting a heavy object such as bending at the knees while keeping your back straight and upright Grasp the instrument at the bottom in the front and at the rear of the unit Although one person can lift the unit it is desirable to have two persons lifting one by grasping the bottom in the front and the other by grasping the bottom in the rear Equipment Damage Do not attempt to lift the instrument by the cover or other external fittings a The Model 42i Low Source is shipped complete in one container If there is obvious damage to the shipping container when you receive the instrument notify the carrier immediately and hold for inspection The carrier is responsible for any damage incurred during shipment Use the following procedure to unpack and inspect the instrument 1
228. s are read in using either the ASCII or binary format specifiers and converted to uniform internal representations 32 bit floats or 32 bit integers These values are converted into text for display on the screen using the format specifier for the front panel display Normally the specifier used to parse a particular datum from the input stream will be strongly related to the specifier used to display it e g all of the floating point inputs will be displayed with an f output specifier and all of the integer inputs will be displayed with a d specifier The first line of the Layout response is the scanf like parameter list for parsing the fields from an ASCII ERec response Parameters are separated by spaces and the line is terminated by a n the normal line separator character Valid fields are s parse a string d parse a decimal number ld parse a long 32 bit decimal number f parse a floating point number x parse a hexadecimal number 41x parse a long 32 bit hex number ignore the field Note signed versus unsigned for the integer values does not matter it is handled automatically The second line of the Layout response is the binary parameter list for parsing the fields from a binary response Parameters MUST be separated by spaces and the line is terminated by a n Valid fields are Thermo Fisher Scientific Format Specifier for Front Panel Layout Thermo Fisher Scientific Text V
229. safety is on Send ozonator safety Receive ozonator safety on set ozonator safety onoff These commands set the ozonator safety on or off The example below sets the ozonator off Send Set ozonator safety off Receive set ozonator safety off ok ozonator status This command reports the status of the ozonator and safety The example below reports that the ozonator is off Send ozonator status Receive ozonator status off pmt status This command reports the status of the PMT on or off The example below reports that the PMT is on Send pmt status Receive pmt status on set pmt onoff These commands set the PMT on or off The example below turns the PMT off Send set pmt off Receive set pmt off ok Thermo Fisher Scientific Communications Configuration Thermo Fisher Scientific C Link Protocol Commands Communications Configuration save set save params This command stores all current parameters in FLASH memory It is important that each time instrument parameters are changed that this command be sent If changes are not saved they will be lost in the event of a power failure The example below saves the parameters to FLASH memoty Send set save params Receive set save params ok time This command reports the current time 24 hour time The example below reports that the internal time is 2 15 30 pm Send time Receive time 14 15 30 set time hh mm ss hh hours mm minutes ss seconds T
230. ses an indirection on the precision specifier which now becomes a field number This is useful when formatting for example numbers which have varying precision depending on the mode of the instrument Binary numbers can also have an optional precision specifier which is used to determine how many bits to print For example the specifier b4 will print the lowest four bits of the parsed number There are serious restrictions on where an s field may appear currently sources and 2 must be s and no others may be s Alarm Information The value source is followed by optional alarm information indicated by a commercial at sign with a source indicator and a starting bit indicator All alarm information is presumed to be two bits long low and high The bitfield extraction is performed on the integer part of the source Typical alarm information would appear as 6 4 Translation Table Then there appears an optional translation table within braces This is a string of words separated by spaces An example translation table would be Code_0 Code_1 Code_2 Code_3 The value once extracted is used as a zero based index into the translation table to determine the string to display Selection Table Then there appears an optional selection table within parentheses This is a string of numbers separated by spaces 0 1 The selection table lists the translation table entries which the user may select from when sett
231. sory Connector 8 12 Model 427 Low Source Instruction Manual 1 stop bit no parity All responses are terminated with a carriage return hex 0D Refer to Table 8 1 for the DB9 connector pin configuration Table 8 1 RS 232 DB Connector Pin Configurations DB9 Pin 2 Ol CO WN Ww Function RX TX RTS CTS Ground The instrument uses a four wire RS 485 configuration with automatic flow control SD Refer to Table 8 2 for the DB9 connector pin configuration Table 8 2 RS 485 DB Connector Pin Configuration DB9 Pin 2 Oo Cw N O Function receive receive transmit transmit ground An RJ45 connector is used for the 10Mbs Ethernet connection supporting TCP IP communications via standard IPV4 addressing The IP address may be configured for static addressing or dynamic addressing set using a DHCP server Any serial port protocols may be accessed over Ethernet in addition to the serial port The external accessory connector is not used in the Model 427 Low Source analyzer Thermo Fisher Scientific System Description I O Components This port is used in other models to communicate with smart external devices that may be mounted hundreds of feet from the analyzer using an RS 485 electrical interface Thermo Fisher Scientific Model 427 Low Source Instruction Manual 8 13 System Description 1 0 Components 8 14 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Chapter9
232. ssigned Not Assigned NO NO NO Not Assigned Not Assigned Not Assigned Dual Range High NO High NO High NO Low NO Low NO Low NO High NO High NO High NO Low NO Low NO Low NO Auto Range High Low NO High Low NO High Low NO Range status Not Assigned Not Assigned High Low NO High Low NO High Low NO Range status Not Assigned Not Assigned These commands report the list of index numbers and the variables associated with that index number available for selection in the current mode determined by single dual auto gas mode no no or no no for analog output digital output and digital inputs The index number is used to insert the variable in a field location in a list using set sp field index The example below reports the list of analog output index numbers and variables Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands I O Configuration Send list var aout Receive list var aout index variable O none 1 no 2 no2 3 nox 18 intt 19 rctt 20 pmtt 21 convt 25 pres 27 pmtv 28 ain1 29 ain2 30 ain3 31 ain4 32 ain5 33 ain6 34 ain7 35 aing relay stat This command reports the current relay logic normally open or normally closed if all the relays are set to same state that is all open or all closed The example below shows that the status when all the relays logic is set to normally open Send relay stat Rec
233. sted such that the following relationships hold Pr NO Jc X tr 2 2 75 ppm min FNo NO hke NO krp RC STD Fot Fro te PE lt 2 min Fo Fno Use the following procedure to determine the flow conditions to be used in the GPT system 1 Determine Fy the total flow required at the output manifold which should be equal to the analyzer demand plus 10 to 50 percent excess 2 Establish NO oyz as the highest NO concentration that will be required at the output manifold NO ouyr should be about equal to 90 of the upper range limit URL of the NO concentration range to be covered 3 Determine Fyo as NO oyr X Fr FNo NO Jotp 4 Select a convenient or available reaction chamber volume Initially a trial volume may be selected in the range of 200 to 500 cc 5 Compute Fo as po ENO Isto X Frox Vee _ 5 2 75 ii Model 42i Low Source Instruction Manual 4 5 Calibration Calibration Adjusting Instrument Gain 4 6 Model 427 Low Source Instruction Manual Compute tp as Vere Ee Fo Fno Verify that tp lt 2 minutes If not select a reaction chamber with a smaller Vpc Compute the diluent air flow rate as Fp Fr Fo Fno If Fo turns out to be impractical for the desired system select a reaction chamber having a different Vgc and re compute Fp and Fo Use the following procedure to adjust the instrument gain Note The NO channel should be calibrated first and t
234. sts the replacement parts for the Model 42i Low Source major subassemblies Refer to Figure 7 2 to identify the component location Table 7 1 Model 42i Low Source Replacement Parts Part Number Description 100480 00 Front Panel Push Button Board 101491 03 Processor Board 100533 00 Motherboard 100539 00 Digital Output Board 100542 00 1 0 Expansion Board Optional 100859 00 Front Panel Connector Board 100536 00 Measurement Interface Board 100856 00 Temperature Control Board 101167 00 Input Board Assembly 101076 00 Front Panel Display 9973 Ozonator Assembly 9974 Ozonator Transformer 101023 00 Pressure Transducer 101620 00 Flow Switch Ozone 9367 Photomultiplier Tube PMT 101024 00 PMT High Voltage Power Supply 9981 PMT Base Socket Assembly 101390 00 Solenoid Valve 101020 00 Cooler Assembly 102648 04 Reaction Chamber Assembly 101009 00 NO to NO Converter Assembly Molybdenum 110VAC 101214 00 NO to NO Converter Assembly Stainless Steel 110VAC 9269 Molybdenum Converter Cartridge 9467 Stainless Steel Converter Cartridge 101011 00 Pump 110VAC w Plate and Fittings 9267 Pump Repair Kit for 10101 1 00 Model 427 Low Source Instruction Manual 7 5 Servicing Cable List Table 7 1 Model 427 Low Source Replacement Parts continued Cable List Part Number Description 101055 00 AC Receptacle Assembly include in this parts list 101681 00 Power Supply Assembly 24VDC w Base Plate and Screws 100907 00 Fan 24VDC 101905
235. supplier are not warranted by Seller but Seller agrees to assign to Buyer any warranty rights in such Product that Seller may have from the original manufacturer or third party supplier to the extent such assignment is allowed by such original manufacturer or third party supplier In no event shall Seller have any obligation to make repairs replacements or corrections required in whole or in part as the result of i normal wear and tear ii accident disaster or event of force majeure iii misuse fault or negligence of or by Buyer iv use of the Products in a manner for which they were not designed v causes external to the Products such as but not Thermo Fisher Scientific A i Low Source Instruction Manual A 1 Warranty A 2 42i Low Source Instruction Manual limited to power failure or electrical power surges vi improper storage and handling of the Products or vii use of the Products in combination with equipment or software not supplied by Seller If Seller determines that Products for which Buyer has requested warranty services are not covered by the warranty hereunder Buyer shall pay or reimburse Seller for all costs of investigating and responding to such request at Seller s then prevailing time and materials rates If Seller provides repair services or replacement parts that are not covered by the warranty provided in this warranty Buyer shall pay Seller therefor at Seller s then prevailing time and materials rates
236. t 1 10 Volts The Volts screen allows the user to set the input voltage for the selected table point in the conversion table from 0 00 to 10 50 The default table is a two point table with point 1 0 00 V 000 0 U and point 2 10 00 V 10 0 U e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Select Point gt Volts Use jand to move the cursor up and down e Press to save the new value ts CHENGE VOLUE Save Thermo Fisher Scientific Model 427 Low Source Instruction Manual 3 61 Operation Instrument Controls Menu 3 62 User Value Temperature Compensation Model 42i Low Source Instruction Manual The User Value screen allows the user to set the output value for the corresponding input voltage for the selected table point in the conversion table from 9999999 to 99999999 The default table is a two point table with point 1 0 00 V 000 0 U and point 2 10 00 V 10 0 U e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Table Point gt User Value Use and to move the cursor up and down e Press to save the new value t CHANGE VALUE SOY Temperature compensation provides compensation for any changes to the instrument s output signal due to internal instrument temperature variations The effects of internal instrument temperature changes on the analyz
237. t Damage Alerts in this Manual Alert Description WARNING If the equipment is operated in a manner not specified by A the manufacturer the protection provided by the equipment may be impaired The service procedures in this manual are restricted to qualified service personnel only a The Model 427 Low Source is supplied with a three wire grounding cord Under no circumstances should this grounding system be defeated CAUTION If the LCD panel breaks do not to let the liquid crystal A contact your skin or clothes If the liquid crystal contacts your skin or clothes wash it off immediately using soap and water Avoid contact with converter heated components Allow converter to cool to room temperature before handling converter components a Equipment Damage Do not attempt to lift the analyzer by the cover or other A external fittings This adjustment should only be performed by an instrument service technician some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a Handle all printed circuit boards by the edges only Do not point the photomultiplier tube at a light source This can permanently damage the tube a Do not remove the panel or frame from the LCD module M The LCD module polarizing plate is very fragile handle it carefully Do not wipe the LCD module polarizing plat
238. t User Calibration Default screen allows the user to reset the calibration configuration values to factory defaults e Inthe Main Menu choose Service gt Calibration Factors gt Reset User Cal Defaults e Press to warn user and enable restore with gt e Usef to reset the calibration pressure reference value when pressed after e e Thermo Fisher Scientific Operation Calibration Menu Calibration Menu The Calibration menu is used to calibrate the analyzer including zero backgrounds the NO NO gt and NO coefficients and the calibration pressure The screens below show the calibration menu in single mode and dual auto range modes The calibration procedure is the same in dual auto or single range however there are two sets of gas coefficients in dual or auto range i e low and high coefficients This enables each range to be calibrated separately When calibrating the instrument in dual or auto range be sure to use a low span gas to calibrate the low range and a high span gas to calibrate the high range Whether dual or single range the first step in calibrating the instrument is to assign the calibration pressure The calibration pressure is used to account for slight pressure fluctuation brought on by changing weather The calibration pressure is set equal to the reactor pressure at the time of calibration For more information about calibration see Chapter 4 Calibration e Inthe Main M
239. t pressure as the calibration pressure The example below successfully sets the calibration pressure to 120 5 mmHg Send set pres cal 120 5 Receive set pres cal 120 5 ok set cal pres This command automatically sets the current pressure as the calibration pressure The example below successfully sets the calibration pressure Send set cal pres Receive set cal pres ok Keys Display push buron button do down en enter he help le left me menu ri right rujrun up 1 2 3 4 These commands simulates pressing the front panel pushbuttons The numbers represent the front panel soft keys from left to right Send push enter Receive push enter ok B 26 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Keys Display isc iscreen This command retrieves the framebuffer data used for the display on the iSeries instrument It is 19200 bytes in size 2 bits per pixel 4 pixels per byte arranged as 320 by 240 characters The data is sent in RLE encoded form to save time in transmission It is sent as a type 5 binary c_link response with no checksum The RLE encoding consists of a 0 followed by an 8 bit count of consecutive OxFF bytes The following c code will expand the incoming data unpackDisplay void far tdib unsigned char far rlescreen unsigned char far sc4bpp sc2bpp screen ptr screen unsigned char far malloc 1
240. ta lists This command sets the scratch pad field number item number in scratch pad list to value where value is the index number of a variable in the analog out variable list Available variables and their corresponding index numbers may be obtained using the command list var aout The set sp field command is used to create a list of variables which can then be transferred into the long record short record or streaming data lists using the set copy sp to lrec set copy sp to srec or set copy sp to stream commands Send set sp field 1 34 Receive set sp field 1 34 ok stream per This command reports the currently set time interval in seconds for streaming data Send stream per Receive stream per 10 Thermo Fisher Scientific Thermo Fisher Scientific Calibration C Link Protocol Commands Calibration set stream per number value number value 1 2 5 10 20 30 60 90 120 180 240 300 This command sets the time interval between two consecutive streaming data strings to number value in seconds The example below sets the number value to 10 seconds Send set stream per 10 Receive set stream per 10 ok stream time This command reports if the streaming data string will have a time stamp attached to it or not according to Table B 5 Send stream time Receive stream time 1 set stream time value This command enables value where value is to attach or disable time stamp
241. tch pad into stream list Sets copies current srec selection into the scratch pad Sets copies current streaming data selection into the scratch pad Reports sets defined custom range concentration Reports sets current date Sets parameters to default values Reports sets state of use of DHCP Reports diagnostic voltage level for I O expansion board Page B 9 B 36 B 23 B 23 B 23 B 23 B 23 B 23 B 24 B 23 B 23 B 24 B 23 B 26 B 16 B 16 B 16 B 32 B 33 B 10 B 10 B 22 B 21 B 21 B 21 B 22 B 22 B 29 B 33 B 33 B 37 B 16 Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Table B 1 C Link Protocol Commands Command diag volt mb diag volt mib dig in din do down dout dtoa en enter er erec erec format erec layout flags format gas mode gas unit he help high avg time high no high no coef high no gas high no2 high no2 coef high no2 gas high nox high nox coef high nox gas high range no high range no2 Description Reports diagnostic voltage level for motherboard Reports diagnostic voltage level for measurement interface board Reports status of the digital inputs Reports sets digital input channel and active state Simulates pressing down pushbutton Reports sets digital output channel and active state Reports outputs of the digital to analog converters per channel Simulates pressing enter pushbutton Returns a brief description of
242. te The concentration value will show ERROR if the measured concentration is not a valid span value either higher than the selected range or 0 or lower e In the Main Menu choose Calibration Factors gt NO NO or NO Coef e Use and to increment or decrement the coefficient value e Press to save the new coefficient Thermo Fisher Scientific Model 42i Low Source Instruction Manual 3 21 Ope ration Calibration Factors Menu 3 22 Calibration Pressure Reset User Calibration Default Model 42i Low Source Instruction Manual The Calibration Pressure screen reports the reactor pressure at which current calibration was performed The screen also allows this value to be edited by the operator This value should not be changed unless a complete manual calibration is being performed The calibration pressure is set equal to the reactor pressure at the time of calibration Note Turning the pressure compensation on and off can produce significant artificial jumps in the apparent sample concentration If the pressure compensation feature is to be used the instrument must be calibrated with the pressure compensation feature on For more information about calibration see Chapter 4 Calibration a e Inthe Main Menu choose Calibration Factors gt Calibration Pressure e Use t and to increment or decrement the calibration pressure value e Press to save the new calibration pressure The Rese
243. tely control an analyzer using a host device such as a PC or a datalogger e Appendix C MODBUS Protocol provides a description of the MODBUS Protocol Interface and is supported both over RS 232 485 RTU protocol as well as TCP IP over Ethernet Safety Review the following safety information carefully before using the analyzer This manual provides specific information on how to operate the analyzer however if the analyzer is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Safety and Equipment This manual contains important information to alert you to potential safety Damage Alerts hazards and risks of equipment damage Refer to the following types of alerts you may see and the actual alerts that appear in this manual Safety and Equipment Damage Alert Descriptions Alert DANGER WARNING CAUTION Equipment Damage gt gt gt xvi Model 42i Low Source Instruction Manual Description A hazard is present that will result in death or serious personal injury if the warning is ignored A hazard is present or an unsafe practice can result in serious personal injury if the warning is ignored a The hazard or unsafe practice could result in minor to moderate personal injury if the warning is ignored a The hazard or unsafe practice could result in property damage If the warning Is ignored Thermo Fisher Scientific Preface Safety Safety and Equipmen
244. ter Equipment Required 110V pump or 220V pump Screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component 1 Turn instrument OFF unplug the power cord and remove the cover Thermo Fisher Scientific Model 42i Low Source Instruction Manual 7 11 Servicing Fan Replacement 2 Disconnect pump power line from AC PUMP connector on the measurement interface board Captive Screws 4 Figure 7 6 Replacing the Pump 3 Remove both lines from pump 4 Loosen the four captive screws Figure 7 6 securing the pump and remove the pump 5 Install new pump by following previous steps in reverse Fan Replacement Use the following procedure to replace the fan Figure 7 7 Equipment Required Fan Philips screwdriver amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a Equipment Damage Some internal components can be damaged by small 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the fan guard from the fan and remove the filter 7 12 Model 427 Low Source Instruction Manual Thermo Fisher Scientific PMT Cooler and Reaction Chamber Assembly Replacement Thermo Fisher Scientific Servicing PMT Cooler and Reaction Chamber Assembly Replacement 3 Pull the power connect
245. ters and functions that are useful when making adjustments or diagnosing problems The service mode includes some of the same information found in the Diagnostic menu however readings are updated every second in the service mode compared with every 10 seconds in the Diagnostics menu For additional service assistance see Service Locations at the end of this chapter This chapter includes the following parts information and component replacement procedures Safety Precautions on page 7 3 e Firmware Updates on page 7 5 e Replacement Parts List on page 7 5 e Cable List on page 7 6 e Removing the Measurement Bench and Lowering the Partition Panel on page 7 8 e Pump Replacement on page 7 11 e Replacing a Fan on page 7 13 e PMT Cooler and Reaction Chamber Assembly Replacement on page 7 13 e Photomultiplier Tube Replacement on page 7 15 Model 427 Low Source Instruction Manual 7 1 Servicing 7 2 Model 427 Low Source Instruction Manual PMT High Voltage Power Supply Replacement on page 7 16 Reaction Chamber Cleaning or Removal on page 7 19 NO2 to NO Converter Replacement on page 7 21 Solenoid Valve Replacement on page 7 23 Ozonator Assembly Replacement on page 7 24 Ozonator Transformer Replacement on page 7 26 Input Board Replacement on page 7 26 DC Power Supply Replacement on page 7 29 Analog Output Adjustment
246. the main operating conditions in the format specified in the commands Returns a brief description of the main operating conditions in the format specified in the command Reports sets erec format ASCII or binary Reports current layout of erec data Reports 8 hexadecimal digits or flags that represent the Status of the ozonator PMT gas mode and alarms Reports sets current reply termination format Reports current mode of sample zero or span Reports sets current gas units Simulates pressing help pushbutton Reports sets high range averaging time Reports NO concentration calculated with high range coefficients Reports sets high range NO coefficients Reports sets high range NO span gas concentration Reports NO concentration calculated with high range coefficients Reports sets high range NO coefficients Reports sets high range NO span gas concentration Reports NO concentration calculated with high range coefficients Reports sets high range NO coefficients Reports high range NO span gas concentration Reports selects current NO high range Reports selects current NO high range Commands Page B 16 B 16 B 41 B 41 B 26 B 41 B 42 B 26 B 17 B 18 B 19 B 20 B 11 B 37 B 310 B 31 B 26 B 9 B 10 B 24 B 25 B 10 B 24 B 25 B 10 B 24 B 25 B 28 B 28 Model 42i Low Source Instruction Manual B 5 C Link Protocol Commands Commands B 6 Model 427 Low Source Instruction Manual Command
247. the plug connecting the ozonator transformer to the measurement interface board OZONATOR connector 4 Remove the four screws holding the ozonator transformer to the ozonator bracket and remove the ozonator transformer 5 To install the ozonator transformer follow the previous steps in reverse 6 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Use the following procedure to replace the input board Figure 7 15 Equipment Required Input board Thermo Fisher Scientific Servicing Input Board Replacement Philips screwdriver Equipment Damage Some internal components can be damaged by small A N amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Disconnect the BNC signal and the ribbon cable 3 Loosen the two screws holding the assembly bracket to the floor plate move the assembly towards the rear and lift the assembly off the screws 4 Loosen the two screws holding the input box to the assembly bracket and lift the input box off the screws Input Box Screws 2 Assembly Bracket Screws 2 Input Box Figure 7 15 Replacing the Input Board 5 Remove the four screws holding the input b
248. tion alarm 01 manual No Reserved TEI 10 manual No Pressure Pressure Comp A 5 zonator Flow TOPE EUSE op Temperature alarm any Mode i Gas Mode Status OO local OO sample pita SaT 01 remote 01 zero OO no alarm 10 2 10 span O1 low alarm p eos 10 high alarm bee Gas Unit PMT on off 00 ppb Ozonator on off 01 ppm 10 ug ms NOTE 11 migm Or 01 Wt er Hex to Binary Conversion Table FLAG STATUS 42CLS 0 0000 8 1000 LOGO TRANSLATOR 1 000 9 1001 _ z 2 0010 A 1010 DRAWING NUMBER REV Z gt GGI B AOT 100157 00 A 4 0100 C 1100 5 010 Oe ee 6 Oy he Bete IG Z O pe ee Ae Figure B 1 Flag Status Alarms alarm chamber temp min Model 42i Low Source Instruction Manual alarm chamber temp max These commands report the chamber temperature alarm minimum and maximum value current settings The example below reports that the chamber temperature alarm minimum value is 47 0 C Send alarm chamber temp min Receive alarm chamber temp min 47 0 deg C set alarm chamber temp min value set alarm chamber temp max value These commands set the chamber temperature alarm minimum and maximum values to value where value is a floating point number representing chamber temperature alarm limits in degrees C The example below sets the chamber temperature alarm maximum value to 50 0 C Send set alarm chamber temp max 50 0 Receive set alarm chamber temp max 50 0 ok Thermo Fisher Scientif
249. to return to the Calibration menu and choose Calibrate HI RNG NO Verify that the high NO calibration gas concentration is the same as the high NO calibration gas concentration plus any known NO impurity Use to move the cursor left and right and use C to increment and decrement the numeric character at the cursor Press to calculate and save the new high NO coefficient based on the entered span concentration Press gt to return to the Run screen Model 427 Low Source Instruction Manual 4 15 Calibration Zero and Span Check Calibrate High NO Zero and Span Check 4 16 Model 42i Low Source Instruction Manual Use the following procedure to calibrate the NO channel to the NO calibration gas 1 Adjust the O3 generator in the GPT system to generate sufficient O3 to produce a decrease in the high NO concentration equivalent to about 80 of the URL of the high NO range The decrease must not exceed 90 of the high NO concentration determined in the Calibrate High NO procedure 2 From the Main Menu choose Calibration gt Calibrate HI RNG NO3 The Hi NO field displays the current NO concentration The Hi NO Span Conc field is where you enter the high NO calibration gas concentration 3 Set the high NO calibration gas concentration to reflect the sum of the NO concentration generated by GPT and any NO impurity Use gt to move the cursor left and right and use C to
250. to unpack setup and startup the analyzer e Chapter 3 Operation describes the front panel display the front panel pushbuttons and the menu driven software e Chapter 4 Calibration provides the procedures for calibrating the analyzer and describes the required equipment e Chapter 5 Preventive Maintenance provides maintenance procedures to ensure reliable and consistent instrument operation e Chapter 6 Troubleshooting presents guidelines for diagnosing analyzer failures isolating faults and includes recommended actions for restoring proper operation e Chapter 7 Servicing presents safety alerts for technicians working on the analyzer step by step instructions for repairing and replacing components and a replacement parts list It also includes contact information for product support and technical information e Chapter 8 System Description describes the function and location of the system components provides an overview of the software structure and includes a description of the system electronics and input output connections e Chapter 9 Optional Equipment describes the optional equipment that can be used with this analyzer e Appendix A Warranty provides a copy of the warranty statement Model 427 Low Source Instruction Manual XV Preface Safety e Appendix B C Link Protocol Commands provides a description of the C Link protocol commands that can be used to remo
251. tor Label SER EN Reference Designator J7 Pin 26 27 28 29 30 31 32 33 34 30 36 3 Signal Descriptions Ground TTL Input 9 TTL Input 11 TTL Input 12 TTL Input 14 TTL Input 16 Ground Analog Voltage Output 2 Analog Voltage Output 4 Ground Analog Voltage Output 6 Ground serial Enable Jumper 3 3V 24V IN J10 24V Ground DIGITAL 1 0 EXT RS485 J14 J15 co co N O o FP WO N SS O 5V 24V 24V Ground Ground Ground SPI Reset SPI Input SPI Output SPI Board Select SPI Clock RS485 to Rear Panel 6 10 Model 42i Low Source Instruction Manual Oo oo Aa Ww N RS485 to Rear Panel 5V 5V 5V Ground Thermo Fisher Scientific Troubleshooting Connector Pin Descriptions Table 6 3 Motherboard Connector Pin Descriptions continued Connector Reference Pin Signal Descriptions Label Designator 7 Ground 8 Ground 9 NC 10 NC 11 24V 12 24V 13 24V 14 24V 15 24V 24V MONITOR J17 1 24V Power Monitor 2 Ground FRONT PANEL J18 1 Ground BD 2 Ground 3 LCLK LCD Signal 4 Ground p Ground 6 LLP LCD Signal 7 LFLM LCD Signal 8 LD4 LCD Signal 9 LDO LCD Signal 10 LD5 LCD Signal 11 LD1 LCD Signal 12 LD6 LCD Signal 13 LD2 LCD Signal 14 LD7 LCD Signal 15 LD3 LCD Signal 16 LCD Bias Voltage 17 5V 18 Ground 19 Ground 20 LCD_ONOFF LCD Signal 21 Keypad Row 2 Input Thermo Fisher Scientific
252. truction Manual 3 19 Operation Calibration Factors Menu In the example below the analyzer is displaying 4 4 ppb of NO while sampling zero air A background correction of 0 0 ppb means that 0 ppb is being subtracted from the NO concentration being displayed Therefore the background correction must be increased to 4 4 ppb in order for the NO reading to be at 0 ppb i e a NO reading of 4 4 ppb minus a NO background reading of 4 4 ppb gives the corrected NO reading of 0 ppb To set the NO reading in the example below to zero use to increment the NO background correction to 4 4 ppb As the NO background correction is increased the NO concentration is decreased Note that at this point pressing and g however has no affect on the analog outputs or the stored NO background correction of 0 0 ppb A question mark following both the NO reading and the NO background correction indicates that these are proposed changes as opposed to implemented changes To escape this screen without saving any changes press to return to the Calibration Factors menu or to return to the Run screen Press to actually set the NO reading to 0 ppb and store the new background correction of 4 4 ppb Then the question mark prompt beside the NO reading disappears e In the Main Menu choose Calibration Factors gt NO or NO Background e Use and to increment or decrement the proposed background value e Press to save the new background 3 20 Model 4
253. truction Manual 3 35 Operation Instrument Controls Menu Select Content The Select Content submenu displays a list of 32 record fields to use and a submenu list of the analog output signal group choices to choose from Choices are Concentrations Other Measurements and Analog Inputs if the I O expansion board is installed This is a temporary list of items for the selected record type that must be committed via the datalogging menu before the changes will apply Note that committing any changes to this list will erase all currently logged data as the format of the stored data is changed e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Select Content 3 36 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Concentrations Other Measurements Thermo Fisher Scientific Operation Instrument Controls Menu The Concentrations screen allows the user to select the output signal that is tied to the selected field item The selected item is shown by lt after it Note that at this point pressing indicates that these are proposed changes as opposed to implemented changes To change the selected record format and erase record log file data see Commit Content below Range NO is visible only in auto range mode e Inthe Main Menu choose Instrument Controls gt Datalogging Settings gt Select Content gt Select Field gt Concentrations e Use j and
254. turn ASCII code 0x0D lt STX gt is abbreviation for Start of Text ASCII code 0x02 lt ETX gt is abbreviation for End of Text ASCII code 0x03 lt SP gt is abbreviation for space ASCII code 0x20 The following is the basic structure of a Geysitech command lt STX gt Command text lt ETX gt lt BCC gt OR lt STX gt Command text lt CR gt Each Command is framed by control characters lt STX gt at the start and terminated with either lt ETX gt or lt CR gt If a command is terminated with lt ETX gt then additional two characters lt BCC gt s is attached after lt ETX3 gt this is the block checksum Thermo Fisher Scientific Block Checksum lt BCC gt Geysitech Commands Instrument Control Command Thermo Fisher Scientific ST Geysitech Bayern Hessen Protocol Block Checksum lt BCC gt The block checksum is calculated beginning with a seed value of 00000000 binary 0x00 and bitwise exclusive ORing with each of the characters of the command string or response including the framing characters lt STX gt and lt ETX gt The checksum works as an error check The command terminator determines the presence or absence of lt BCC gt If a command is terminated by lt ETX gt then the next two characters are the checksum if the command is terminated with lt CR gt no checksum is attached The block checksum is represented by two characters which represent a 2 digit hex number 1byte e g 1 byt
255. ure The example below reports that the current reaction chamber temperature is 49 0 C Send react temp Receive react temp 49 0 deg C flags This reports 8 hexadecimal digits or flags that represent status of the ozonator PMT pressure and temperature compensation status gas units gas mode and alarms To decode the flags each hexadecimal digit is converted to binary as shown in the Figure B 1 It is the binary digits that define the status of each parameter In the example below the instrument is reporting that the ozonator and PMT are both on that the instrument is in the span gas mode that at least one of the alarm temperature is activated and that the NO high concentration alarm is activated Send flags Receive flags C0028008 Model 427 Low Source Instruction Manual B 11 C Link Protocol Commands Alarms B 12 CF a 0Le ie ST ags rex digns Convert to binary see conversion table OO O J O O O O O O O OIOI 1110 1110100 O O O O O J O O O 1 O O O0 Not Used Alarms i NO concentration alarm M a OMS Not i NO concentration alarm OO auto Used Ox concentra
256. ut The selected item is shown by lt after it e Inthe Main Menu choose Instrument Controls gt I O Configuration gt Digital Input Settings gt Select Relay gt Instrument Action e Use t and to scroll through a list of choices e Press to save the new selection for the relay The Analog Output Configuration menu displays a list of the analog output channels available for configuration Channel choices include all voltage channels all current channels voltage channels 1 6 and current channels 1 6 if the I O expansion board option is installed Configuration choices include selecting range setting minimum maximum values and choosing signal to output Thermo Fisher Scientific Select Output Range Thermo Fisher Scientific Operation Instrument Controls Menu In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Output Config The Select Output Range screen is used to select the hardware range for the selected analog output channel Possible ranges for the voltage outputs are 0 100 mV 0 1 0 5 0 10 V In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Output Config gt Select Channel gt Select Range Use and 4 to move the cursor up and down Press to save the new range t CHOHGE VOLUE SEVE Model 427 Low Source Instruction Manual 3 55 Ope Instr 3 56 ration ument Controls Menu Minimum and M
257. utputs 2 Bytes 1 to maximum allowed by instrument Unit Identifier 1 Byte 0x00 to OxFF Passed back in response Response Function code 1 Byte 0x01 or 0x02 Byte count 1 Byte N Output Status n Byte n N or Nel N Quantity of Outputs 8 if the remainder not equal to zero then N N 1 Error Response Function code 1 Byte Function code 0x80 Exception code 1 Byte 01 IIlegal Function 02 IIlegal Address 03 lllegal Data 04 Slave Device Failure Here is an example of a request and response to read outputs 2 15 Request Field Name Hex Function 0x01 Starting Address Hi 0x00 Starting Address Lo 0x02 Quantity of Outputs Hi 0x00 Quantity of Outputs Lo Ox0D Thermo Fisher Scientific MODBUS Protocol Function Codes Response Field Name Hex Function 0x01 Byte Count 0x03 Outputs status 2 10 OxCD Outputs status 11 15 Ox0A The status of outputs 2 10 is shown as the byte value 0xCD or binary 1100 1101 Output 10 is the MSB of this byte and output 2 is the LSB By convention bits within a byte are shown with the MSB to the left and the LSB to the right Thus the outputs in the first byte are 10 through 2 from left to right In the last data byte the status of outputs 15 11 is shown as the byte value 0x0A or binary 0000 1010 Output 15 is in the fifth bit position from the left and output 11 is the LSB of this byte The four remaining high order bits are zero filled 0x03 0x04 Read Holdin Read holding input
258. value Reaction Chamber Use the following procedure to clean and or remove the reaction chamber Cleaning or Removal see Figure 7 11 Equipment Required Allen Wrench 9 64 inch Wrench 7 16 inch Wrench 9 16 inch amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a Equipment Damage Some internal components can be damaged by small 1 Remove PMT cooler as described in PMT Cooler and Reaction Chamber Replacement in this chapter Thermo Fisher Scientific Model 427 Low Source Instruction Manual 7 19 Servicing Reaction Chamber Cleaning or Removal 2 Disconnect the 1 8 inch line at the mixing tee on the rear of the reaction chamber This line is connected to the left 1 8 inch elbow at the bottom of the front of the reaction chamber PMT Cooler O Ring 2 034 Viton Spacer i Reaction Chamber Rear Quartz Window O Ring 2 127 Reaction Chamber Front gt Figure 7 11 Cleaning or Removing the Reaction Chamber 3 Disconnect 1 4 inch fitting from the exhaust elbow on the front of the reaction chamber 4 Disconnect 1 8 inch fitting from 1 8 inch elbow at the bottom of the front of the reaction chamber 5 Remove the three socket head screws fastening front of reaction chamber to rear This exposes the inner surfaces of both sections of the 7 20 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Serv
259. ve the cover 2 Unplug the I O expansion board cable from the EXPANSION BD connector on the motherboard 7 40 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Servicing O Expansion Board Optional Replacement 3 Remove the two standoffs holding the I O expansion board connector to the rear panel Figure 7 21 4 Pop off the board from the mounting studs and remove the board 5 To install the I O expansion board follow previous steps in reverse Motherboard Digital Output Board O Expansion Board Opt Figure 7 20 Replacing the 1 0 Expansion Board Optional I O Expansion Board Motherboard Ss Ne y SN i Digital Output Board Figure 7 21 Rear Panel Board Connectors Thermo Fisher Scientific Model 42i Low Source Instruction Manual 7 41 Servicing Digital Output Board Replacement Digital Output Board Replacement A Motherboard Replacement 7 42 Model 42i Low Source Instruction Manual Use the following procedure to replace the digital output board Figure 7 20 Equipment Required Digital output board Nut driver 3 16 inch Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the I O expansion board optional if used See the I O Expansi
260. vout range 2 3 set analog vout range channel range This command sets analog voltage output channel to the range where channel is between 1 and 6 inclusive and range is set according to Table B 11 The example below sets channel 2 to the 0 10 V range Send set analog vout range 2 3 Receive set analog vout range 2 3 ok Table B 11 Analog Voltage Output Range Values Range Output Range 1 0 1 V 2 0 100 mV 3 0 10 V 4 0 5 V 0 cannot be set to this but may report Undefined Thermo Fisher Scientific C Link Protocol Commands I O Configuration dig in This command reports the status of the digital inputs as a 4 digit hexadecimal string with the most significant bit MSB being input 16 Send dig in Receive dig in Oxff7f din channel This command reports the action assigned to input channel and the corresponding active state The example below reports the input 5 to be assigned an index number 9 corresponding to action of analog outputs to zero with the active state being high Send din 5 Receive din 5 9 AOUTS TO ZERO high set din channel index state This command assigns digital input channel 1 16 to activate the action indicated by index 1 35 when the input transitions to the designated state high or low Use list din var command to obtain the list of supported index values and corresponding actions Send set din 1 3 high Receive set din 1 3 high ok dout channel This command reports the i
261. we fo fo fo fo fo fo fo Table D 2 Error Status for Model 427 Low Source 05 08 osoz o foo a eee 2 Hexvale 80 0 20 fro ojos o o po E Errors TT Mousa 8 fo fo fo 0 fo pofi Mousa fo fo fo fo 0 fo pifo fusca bhb fo fo fo fs fa fo rrenen a o fo fo v fo a gt Pewen fo oo r fo fo a o senpeFowaam a o v fo fo fo a o oarre fo 1 fo fo fo fo o gt fuses fo fo fo fo fo fo fo Thermo Fisher Scientific Model 427 Low Source Instruction Manual D 7
262. ws from top plate Remove top plate flapper valve and bottom plate Using needlenose pliers remove clamping disk holding diaphragm and Teflon protection wafer onto clamping rod and remove the diaphragm and Teflon wafer Assemble pump by following above procedure in reverse Make sure not to over tighten clamping disk Be sure that the Teflon side of diaphragm faces up and that the flapper valves cover the holes of the top and bottom plate Re install the cover reconnect the power cord and turn instrument ON Check that the reaction chamber pressure reads between 150 and 250 mm Hg Model 427 Low Source Instruction Manual 5 7 Preventive Maintenance Pump Rebuilding 5 8 Model 427 Low Source Instruction Manual Thermo Fisher Scientific Chapter 6 Troubleshooting This instrument has been designed to achieve a high level of reliability In the event of problems or failure the troubleshooting guidelines board level connection diagrams connector pin descriptions and testing procedures presented in this chapter should be helpful in isolating and identifying problems For additional fault location information refer to the Preventive Maintenance chapter in this manual The service mode in the Operation chapter includes parameters and functions that are useful when making adjustments or diagnosing problems The service mode includes some of the same information found in the Diagnostic menu however rea
263. x coef high no coef high no2 coef high nox coef low no coef low no2 coef low nox coef These commands report the NO NO and NO coefficients in single range mode or the high and low range coefficients in dual or auto range mode If the mode is incorrect the instrument responds with cant wrong settings The example below reports that the NO coefficient is 1 000 Send no coef Receive no coef 1 000 set no coef value set no2 coef value set nox coef value set high no coef value set high no2 coef value set high nox coef value set low no coef value set low no2 coef value set low nox coef value These commands set the NO NO3 and NO coefficients to user defined values to value where value is a floating point representation of the coefficient The example below sets the NO coefficient to 1 005 Thermo Fisher Scientific Thermo Fisher Scientific C Link Protocol Commands Calibration Send set no coef 1 005 Receive set no coef 1 005 ok no gas no2 gas nox gas high no gas high no2 gas high nox gas low no gas low no2 gas low nox gas These commands report the NO NO and NO span gas concentrations used to auto calibrate NO NO and NO coefficients The high and low commands are only available in dual and auto range mode If the mode is incorrect the instrument responds with cant wrong settings The example below shows that the NO low span gas concentration is 24 000 Send low no gas
264. y internal component a 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Disconnect solenoid from the Measurement Interface board NO NOy connector Note electrical connections to facilitate re connection 3 Remove plumbing from solenoid Note plumbing connections to facilitate re connection 4 Pull solenoid valve from mounting clip 5 To replace solenoid follow above in reverse Model 427 Low Source Instruction Manual 7 23 Servicing Ozonator Assembly Replacement 6 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Solenoid Valve Mounting Clip Figure 7 13 Replacing the Solenoid Valve Ozonator Assembly Use the following procedure to replace the ozonator assembly Figure 7 14 Replacement Equipment Required Ozonator assembly Wrench 5 8 inch Philips screwdriver Equipment Damage Some internal components can be damaged by small A N amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component a 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Carefully disconnect the plumbing at the glass inlet and outlet of the ozonator 7 2

Model 42i-LS - User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents