Home

instruction manual model 400a ozone analyzer

1. CHECK REAR PANEL FOR CORRECI INPUT POWER TET I RES O o HHI zi RI AR mi ES dy m LE a E E p 2 Eee eS C gt Co SH SS 5 o lo 31000N MO14 348nSS38d 0 224 72 E YL on 9 O d D Z5 LU O BR ZZ CN QC NY n _ str li di 00 02 Figure 2 1 Removal of Shipping Screws amp Check for Correct Power Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 2 2 Electrical and Pneumatic Connections 1 Refer to Figure 2 2 to locate the rear panel electrical and pneumatic connections 2 Locate the power cord that is shipped with the instrument Before plugging the instrument in check the voltage and frequency label on the rear panel of the instrument for compatibility with the local power 3 If you are connecting to a calibrator attach a vented sample inlet line to the sample inlet port The pressure of the sample gas at the inlet port should be at ambient pressure The exhaust from the pump should be vented to atmospheric pressure using maximum of 10 meters of tubing 4 Attach the analog output connections to a strip chart recorder and or datalogger Refer to Figure 9 1 for the jumper settings for the desired analog output vol
2. 4 5 4 3 2 Pneumatic Sensor Board a 4 5 4 3 3 Computer Hardware and 4 6 43 4 aede tat acetate ote 4 6 4 3 5 Front Panel EET 4 6 4 3 6 Power Supply Module deett lle dette eene ten hatte maesta ete abies nnne 4 10 4 3 7 Pump Valves Pneumatic 4 10 5 SOFTWARE FEATURES 2 2 5 1 5 1 INDEX FRONT PANEL MENUS an asap cas Acca bial ACen la AL la Nas 5 1 OQ SAMPLE ert M I M e d 5 4 5 2 1 Test FUNCTIONS een 5 4 5 2 2 CAL CALS CALZ Calibration 21 1 5 7 5 9 SET UP MODE 5 9 5 3 1 Configuration Information CFG nn ae en c engen 5 10 5 3 2 Automatic Calibratlon AGA een 5 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 3 3 Data Acquisition System 5 02 40 5 10 5 3 4 Range Menu RNGE a a a pueri deed Uu epi pie deiude pieds 5 12 5 3 5 Password Enable BASSO 4 00 naeh 5 14 5 3 6 Time of Day Clock CLK used ee M uet dA A A A d M 5 15 5 3 7 Communications Menu COMM 5 15 5 3 8 Varables Menu VARS ansehe 5 16 5 3 9 Diagnostic Mode DIAGQ
3. eeessssssssisssssssessseeeee 5 16 DASTATUS series 5 17 5 9 FUSE OZ INTEREAGE 5 17 5 5 1 Setting Up the RS 232 Interface 2 22 5 19 5 52 Command aoa p Seas adu LEE 5 25 5 5 3 TEST Commands and 5 27 5 5 4 WARNING Commands and 5 29 5 5 5 CALIBRATION Commands and 5 30 5 5 6 DIAGNOSTIC Commands and 5 32 5 5 7 DAS Commands and Message nn 5 33 5 5 8 Internal Variables coiere icd 5 36 6 OPTIONAL HARDWARE AND 5 6 1 6 1 HACK 52 2 tee eR quitus 6 1 6 2 ZERO SPAN VALVE OPTION seta tana eer ana Rok rae ene ni incon 6 1 6 3 INTERNAL ZERO SPAN IZS OPTION Zanker 6 1 6 4 AUTOCAL SETUP TO SUPPORT 145 AND Z S VALVE 6 2 6 5 CURRENT LOOP OPTION Ms 6 4 6 6 METAL WOOL SCRUBBER OPTION 6 5 7 CALIBRATION AND ZERO SPAN CHECKS 7 1 7 1 MANUAL ZERO SPAN CHECK OR CAL WITH INPUT FROM SAMPLE 7 4 7 2 MANUAL ZERO
4. Model 400A Analyzer Instruction Manual 02260 Rev F Table 9 1 Test Function Values Continued SAMPLE FLOW Sample mass flow rate 720 880 cc min Check for pneumatic system problems See Section 9 3 12 Check for flowmeter problems See Section 9 3 10 SAMPLE TEMP The temperature of the sample gas in 100 150 above ambient See Section 9 2 3 absorption cell PHOTO LAMP The temperature of the UV Source Lamp 520C See Section 9 3 5 O5 GEN TEMP The temperature of the IZS ozone 480C See Section 9 3 9 generator lamp option ORIFICE TEMP Orifice manifold temperature BOX TEMP The temperature inside the analyzer 10 50C above ambient If gt 5C above ambient check fan in chassis the Power Supply Module Areas to the side and rear of instrument should allow adequate ventilation DC Power Supply reference A composite 2250 2750mV Composite of 5 and 15VDC of voltages provided by the DC Power Values outside range indicate failure Supply of DCPS Software gain term 1 0 0 1 Values outside range indicate contamination miscalibration or flow blockage OFFSET Software zero offset term 0 20 ppb Values outside range indicate contamination TIME Time of day clock 00 00 23 59 Fast or slow clocks can be adjusted See VARS CLOCK Battery in clock chip on CPU board may be dead DCPS SLOPE 9 4 Teledyne Model 400A Analyzer Instruction Manual
5. 9 26 9 3 5 Optical Bench Assembly nur een aa as ahead 9 30 9 3 6 Checking the Ozone Scrubber and Main Switching 9 34 9 3 7 Rear Panel Status Analog Output 00 04 4 9 34 9 3 8 Power Supply Modulen ac deret eoe ee Gee itio te etii eA E 9 38 9 3 9 IZS Option Diagnosis and 9 43 9 3 10 Flow Pressure 21 9 47 1 5 5 pucr arte oc 9 48 aaa 9 48 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 10 M400A SPARE PARTS LIST APPENDIX A ELECTRICAL SCHEMATICS vi Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F LIST OF FIGURES FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU RE 2 1 RE 2 2 RE 2 3 RE 4 1 RE 4 2 RE 5 1 RE 5 2 RE 7 1 RE 8 1 RE 8 2 RE 8 3 RE 8 4 RE 9 1 RE 9 2 RE 9 3 RE 9 4 RE 9 5 RE 9 6 RE 9 7 REMOVAL OF SHIPPING SCREWS amp CHECK FOR CORRECT POWER seen 2 2 REAR PANEL ee ph PRO i eR Rue E 2 5 ASSEMBEYFAYOUT ee im memet enims aestate amit 2 10 BEOCK DIAGR
6. Analyzer Instruction Manual 02260 Rev F INTENTIONALLY BLANK 1 2 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 2 GETTING STARTED 2 1 Unpacking 1 Verify that there is no apparent external shipping damage If damage has occurred please advise the shipper first then Teledyne API CAUTION To avoid personal injury always use two persons to lift and carry the Model 400A Also check for internal shipping damage and generally inspect the interior of the instrument to make sure all circuit boards and other components are in good shape Locate the instruction manual that is shipped with the instrument Remove all red colored shipping screws shown in the Figure 2 1 Also remove the four red shipping screws from the optical bench assembly on the inside of the instrument NOTE Save these shipping screws and re install them whenever the unit is shipped to another location Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F ae MOVE SHIPPIN gt la e xr EWS SURI
7. eeeeseeseeeeeeeeeene rennen enne 6 4 TABLE 7 1 TYPES OF ZERO SPAN CHECK AND 2 2 1 100 0 000000000000000000000000000 7 2 TABLE 7 2 CALIBRATION CONTROLS engine seitens secte eee des edge 7 3 TABLE 7 3 MANUAL ZERO CALIBRATION PROCEDURE ZERO GAS THRU SAMPLE PORT sese enne enne 7 4 TABLE 7 4 ENTER EXPECTED SPAN GAS CONCENTRATIONS PROCEDURE eee eset tete 7 5 TABLE 7 5 MANUAL SPAN CALIBRATION PROCEDURE SPAN GAS THRU SAMPLE PORT esee enne enne 7 5 TABLE 7 6 MANUAL ZERO CALIBRATION PROCEDURE Z S VALVES ccsssessssccececsessaececececsessaaececececsessaeeececeesenseeeeeeeceensas 7 7 TABLE 7 7 MANUAL SPAN CALIBRATION PROCEDURE Z S VALVES enne nennen 7 7 TABLE 7 8 REMOTE CONTACT CLOSURE TRUTH TABLE cccccccscssssssecececeesenssaececccecsesssaeceeececsesssaesecececsensaesesececeesesnsaeeeeeens 7 12 TABLE 7 9 ACTIVITY MATRIX FOR PROCUREMENT OF EQUIPMENT AND 2 0 0 02 0 7 14 TABLE 7 10 ZERO CALIBRATION PROCEDURE ssccccccecssssssscecececeessnsscecececeeseneaeceeccecsesaaeeeeececeessauesecececeeseaaeceseeseseneneaeeeeeees 7 21 TABLE 7 11 EXPECTED SPAN GAS CONCENTRATION PROCEDURE scscsecessesssseeecececeesnsaeceeececsensauececececeensaae
8. The ozone generator housing containing the ozone generating lamp is temperature controlled at 48 deg C to maintain a stable output from the ozone generator Once the instrument temperatures have stabilized the ozone generator temperature should be 48 0 5 deg C Orifice Temperature This TEST function monitors the orifice temperature The value of the orifice temperature is used in the calculation of the sample flow to correct for air density changes due to the sample temperature inside the orifice manifold For instruments with the IZS option the orifice is temperature controlled to 45 deg C to maintain very stable sample flow which is necessary for stable operation of the IZS ozone generator Box Temperature This TEST function measures the temperature inside the M400A chassis The temperature sensor is located on the IC adapter card on the CPU board DC Power Supply DCPS The DCPS voltage is a composite of the 5 and 15 voltages in the Power Supply Module This is meant to be a quick indicator to show if the PSM is working correctly The nominal value is 2500 mV 100 mV Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Slope Value The slope is the m coefficient of the straight line equation y mx b The value of the slope term sets the calibration of the 400 The slope can be thought of as a gain term which determines the steepness of the calibration curve If DUAL RANGE
9. To change the current units press SETUP RNGE UNIT from the SAMPLE mode and select the desired units NOTE The expected span concentration values in the new units must be re entered into the analyzer and the unit re calibrated using one of the methods in Section 7 Changing units affects all of the RS 232 values all of the display values and all of the calibration values Example If the current units are in ppb and the O3 span value is 400 ppb and the units are changed to ug m the span value is NOT re calculated to the equivalent value in ug m The new value of 856 ug m must be entered for the expected span concentration 5 3 4 5 Dilution Ratio The dilution feature allows you to use the M400A with an additional external system that dilutes the sample gas With the Dilution feature you can select the range and display the concentration at the value and units of the un diluted gas The software scales the diluted sample gas concentration readings so that the outputs show the un diluted concentrations Also when calibrating the instrument or setting the ranges the values selected are scaled to reflect the actual un diluted concentrations The scaled readings are sent to the display analog outputs and RS 232 port To use the Dilution feature 1 SELECT UNITS To set units press SETUP RANGE UNIT Press ENTR after the unit selection is made then EXIT to return to upper level menus 2 SET DILUTION RATIO The dilution r
10. Strip chart edit Data reporting Level 1 span drift check 25546 Sec 2 7 3 Ref 11 No sign of malfunction Data transcribed to SAROAD hourly data form Ref 10 7 29 Check at least every 2 weeks Sec 2 7 3 Ref 11 Visually check each strip chart Visually check Invalidate data take corrective action increase frequency of Level 1 checks until data is acceptable Void data for time interval for which malfunction is detected Review the data transcribing procedure Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 17 Activity Matrix for Calibration Procedures Calibration Activities Zero air Calibrator Multipoint Acceptance Limits Zero air free of contaminants Sec 2 0 7 Ref 11 Meet all requirement for UV photometer as specified in Sec 2 7 2 Q A Manual TAD and the Fed Reg or approve Transfer Standard Sec 2 7 1 Q A Manual According to Calibration procedure Sec 2 7 2 Q A Manual Ref 11 and Federal Register data recorded 7 6 13 ZERO and SPAN Checks Frequency and Method of Measurement Compare the new Zero air against Source known to Be free of Contaminants Re certify transfer Standard against Primary UV Photometer at least Twice each quarter Calibrate at least Once quarterly Anytime an audit Indicates discrepancy After maintenance that May affect the Calibration Subsec 2 1 Fe
11. This resistance should be in the range of 7 6K ohms to 95K ohms a resistance of 27k ohms corresponds to a temperature of 27 If it is not the thermistor is defective and should be replaced Points for measuring thermistor resistance are as follows 9 15 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Sample Temperature Unplug the connector at Motherboard J14 and measure across the leads Photometer Lamp Temperature Unplug the connector at Motherboard J15 and measure across the leads IZS Lamp Temperature Unplug the connector at Motherboard J16 and measure across the leads If thermistor resistance s are within the proper range check the temperature linearization circuits on the I2C Submux Board see Section 9 3 2 If temperature sensor readings appear accurate but control temperatures are not being maintained at their proper value check the operation of the heaters as follows 1 Observe the indicator LED s on the Power Supply Module and confirm that the PHOTOMETER LAMP HEATER and GEN HEATER LED s are lit or cycling turning off and on If these indicators are not correct it is probably that the Power Supply Module or the V F Board is at fault Check as described in Sections 9 3 8 2 Unplug the heater element from Power Supply Module and confirm that 1 15V AC is present If 115V AC is present the heater element has failed and should be replaced 3 Measure heater resistance lead
12. A variety of zero or span checks can be programmed The Autocal system operates by executing SEQUENCES It is possible to program and run up to 3 sequences each sequence operates in one of 8 MODES as shown in Table 6 1 to Table 6 4 Table 6 1 AutoCal MODE Setup Parameters Disables the Sequence Does a Zero check Does a Zero and low concentration Span check Does a Zero and a high concentration Span check Does a Zero check Does a low concentration Span check Does a high concentration Span check Lo Hi Does a low and high concentration span Check Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F For each mode there are seven attributes that the MODE can have that control operational details of the SEQUENCE They are Table 6 2 AutoCal ATTRIBUTE Setup Parameters Attribute No Attribute Name Action Timer Enabled Turns on the Sequence timer Sequence will operate after Starting Date Time of day sequence will run Number of days to skip between each Seq execution Number of hours later each Delta Days Seq is to be run 6 Duration Number of minutes the sequence operates Example of enabling sequence 2 keystroke sequence is in Table 6 2 Do a span check hour later every other day lasting 15 minutes without calibration Table 6 3 AutoCal Example SEQUENCE Setup Delta Days Do Seq 2 every other day Do Seq 2 1 2 hr later each time 6 3 Teledyne Model 400A
13. Status warning DAS messages reported Characters echoed Line editing allowed No security or multidrop Computer Status warning DAS messages suppressed Characters not echoed Line editing disabled No security or multidrop Security Status warning DAS messages reported 2 Characters echoed Line editing allowed No multidrop Hessen protocol optional Status warning DAS messages suppressed Characters not echoed Line editing disabled Alternate protocol enabled native protocol disabled No security or multidrop Multidrop Status warning DAS messages suppressed Characters not echoed Line editing disabled Commands must include ID number No security Multidrop Security Feature The RS 232 port is often connected to a public telephone line which could compromise instrument security If the LOGON feature is implemented the port has the following attributes 1 A password is required before the port will operate 2 Ifthe port is inactive for 1 hour it will automatically LOGOFF Repeat attempts at logging on with incorrect passwords will cause subsequent logins even with the correct password to be disabled for 1 hour 4 If not logged on the only command that is active is the 5 21 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 The following messages will be given at logon LOG ON SUCCESSFUL Correct password given LOG ON FAILED Password not giv
14. VIVO XXL WO 0432 N3 4 1 2 04347 N3 SHAO O 39NVM ONOO 0 IN3ANSISSV ZO ero uo olr do Az ININNDOISSV 02 2 INJANO ISSV SLNANNOISSY Nid LYOd 4506 54 SLNSNNOISSVY Nid SLNIN SVO ONV d SINJANSISSV 501 15 910 O 310 LEL SH VUES d 819Gvtcl y v c L TU i HET 33040934 XnvHOl O O SNLWLS 22 N f EN ZN M N N ANG I I NVdS 0532 SUA 1SnvHX3 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 27 hos an OISSV Nid Rear Panel 2 5 Figure 2 2 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 2 3 Initial Operation Turn on the instrument power 2 The display should immediately light displaying the instrument type M400A and the computer s memory configuration If you are unfamiliar with the M400A theory of operation we recommend that you read Section 4 before proceeding A diagram of the software menu trees is in Figure 5 1 and Figure 5 2 3 The M400A requires about 30 minutes for all internal components
15. 02260 Rev F 9 1 2 Fault Diagnosis with WARNING Messages The most common and or serious instrument failures will result in a warning message being displayed on the front panel Table 9 2 lists warning messages along with their meaning and recommended corrective action It should be noted that if multiple more than 2 or 3 warning messages occur at the same time it is often an indication that some fundamental analyzer sub system power supply V F board CPU has failed rather than an indication of the multiple failures referenced by the warnings In this situation it is recommended that proper operation of power supplies see Section 9 3 8 and the V F Board see Section 9 3 4 be confirmed before addressing the specific warning messages Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 9 2 Warning Messages Warning Message Corrective Action PHOTO REF WARNING The REFERENCE value is Check and adjust Source Lamp greater than 5000mV or less than and UV detector as described in 2500mV Section 9 3 5 PHOTO LAMP TEMP Temperature control of the Source Check source lamp heater and WARNING Lamp cannot be maintained at its thermistor as described in 529C set point Section 9 3 5 O3 GEN REFERENCE Unable to adjust UV lamp intensity Section 9 3 9 WARNING GEN LAMP WARNING The IZS Ozone Generator is unable Check and adjust the IZS lamp to produce at least 1000 ppb at its and reference dete
16. Analyzer Instruction Manual 02260 Rev F 5 5 5 CALIBRATION Commands and Messages This subset of messages is concerned with reporting the status of the Analyzer and controlling the Analyzer remotely Whenever the Analyzer does a calibration it issues a report to the RS 232 output Table 5 14 lists the status reports Table 5 14 Status Reports C DDD HH MM IIII START ZERO CALIBRATION C DDD HH MM IIII FINISH ZERO CALIBRATION C DDD HH MM IIII START SPAN CALIBRATION C DDD HH MM IIII FINISH SPAN CALIBRATION C DDD HH MM II START MULTI POINT CALIBRATION C DDD HH MM IIII FINISH MULTI POINT CALIBRATION C DDD HH MM IIII START CALIBRATION HOLD C DDD HH MM IIII FINISH CALIBRATION HOLD To do a remote adjustment via the RS 232 interface the host computer should issue a message with the following format C command 5 30 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 5 15 Calibration Commands C id LOWSPAN 112 Start remote low span calibration C id SPAN 121 Start remote span calibration C id ASEQ number Start remote calibration sequence number 1 3 C id EXIT Terminate remote zero or span calibration C id ABORT Abort rest of calibration sequence and immediately resume sampling C id COMPUTE ZERO Calculates a new slope and offset during zero calibration Must be in zero calibration first C id COMPUTE SPAN Calculates a new slope and offset dur
17. Analyzer Instruction Manual 02260 Rev F Table 6 4 AutoCal Example SEQUENCE Keystrokes Step Action Comment roc Press SET Select the SET menu to change the sequence attributes Press PREV NEXT Scroll the SET menu to TIMER ENABLE Press EDIT Allows changing the TIMER ENABLE attribute select ON Press ENTR ENTR changes TIMER ENABLE to ON Press PREV NEXT Repeat steps 6 9 for each attribute Press EXIT Press the EXIT key to return to upper level menus 6 5 Current Loop Option The M400A can be configured with a voltage to current converter for 0 20mA or 4 20mA current loop output on the REC analog output channel REC current loop channel is calibrated independently of the voltage output channel DAS This calibration must be repeated every time an A D D A calibration is performed To calibrate the current output see Section 9 3 4 NOTE Do not exceed 60 V peak voltage between current loop outputs and instrument ground 6 4 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 6 6 Metal Wool Scrubber Option The measurement technique in a M400A is to measure the ratio of light absorbed by sample gas with and without ozone A scrubber is used to remove ozone from the sample stream during the reference cycle This scrubber option is desirable in some high humidity sites The Metal Wool Scrubber uses fine metal wire to create a large surface area to catalytically scrub
18. BAUD rate word length and stop bit settings between modem and analyzer match see Figure 9 2 In DIAGNOSTIC mode use the RS 232 test function to send a 1 sec burst of characters out the port You can verify that the M400A is transmitting data by looking at the red LED on the rear panel It will flicker when data is being transmitted Get your modem to transmit data to the analyzer the green LED should flicker as the instrument is receiving data Data Communications Software for a PC You will need to purchase a software package so your computer can transmit and receive on its serial port There are many such programs internally we use Hyperterminal Once you set up the variables in PROCOMM and your wiring connections are correct you will be able to communicate with the analyzers Make sure the analyzer BAUD rate matches PROCOMM Check in SETUP MORE COMM B AUD also check the other details covered in Figure 9 2 9 25 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 4 Voltage Frequency V F Board Diagnosis and Calibration The 00515 V F board is a complex board complete testing of all of its functions in the field are not possible The following is a few simple tests that will confirm the general operation of the board 1 Observe the DCPS TEST function on the front panel The reading should be near 2500 100mV If it is this means that the V F converter is probably working properly
19. Bit UV Lamp alarm Logic High UV lamp output too low Logic Low Lamp output normal ST HIGH RANGE Status Bit Autorange High Range Logic High M400A in high range Logic Low M400A in low range table continued A 9 9 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 9 3 Diagnostic Mode Signals Continued ST ZERO CAL Status Bit Zero Calibration mode Logic high M400A in Zero cal mode ST SPAN CAL Logic low Not in Zero cal mode Status Bit Span Calibration mode Logic high M400A in Span cal mode Logic low Not in Span cal mode ST FLOW ALARM Status Bit Flow alarm Logic High Sample flow out of spec Logic Low Flows within spec Status Bit Temperature alarm Logic High One or more temps out of spec m ui 41 ST TEMP ALARM Logic Low Temps within spec 42 ST DIAG MODE Status Bit In Diagnostic mode Logic High 2 M100A in Diagnostic mode Logic Low Not in Diag mode idi id nd pe Logic High Instrument power is on Logic Low z Instrument power is off ST PRESS ALARM Status Bit Flow alarm Logic High Sample pressure out of spec Logic Low pressure within spec ST LOW SPAN CAL Status Bit Zero Calibration mode Logic high M400A in Low Span cal mode Logic low Not in Zero cal mode Controls state of green SAMPLE LED on the front panel Controls state of yellow CAL LED on the front panel Controls state of red FAUL
20. Comment Press CALZ The analyzer enters the zero calibrate mode This switches the sample cal and zero span valves to allow zero gas to come in through the zero gas inlet port in the rear panel Wait 10 min Wait for reading to stabilize at zero value 3 Press ZERO If you change your mind after pressing ZERO you can still press EXIT here without zeroing the instrument 4 Press ENTR Pressing ENTR actually changes the calculation equations forcing the reading to zero 5 Press EXIT M400A returns to sample mode Immediately after calibration readings do not go into the DAS averages Refer to Table 7 4 to enter expected ozone span concentration values Table 7 7 Manual Span Calibration Procedure Z S Valves Step Number Action Comment l Press CALS The M400A enters the calibrate mode from sample mode This operates the sample cal and zero span valves to allow span gas to come in through the cal gas inlet port in the rear panel Wait for reading to stabilize at span value 3 Press SPAN If you change your mind after pressing SPAN you can still press EXIT here without spanning the instrument Press ENTR Pressing ENTR actually changes the calculation equations 5 Press EXIT M400A returns to sampling Immediately after calibration data is not added to the DAS averages 7 7 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 3 Manual Zero Span Check with IZS Option Using the IZS option
21. Enter Diagnostic password and press NEXT until D A CALIBRATION appears in the display and press ENTR Press ADC to calibrate the V F converter 4 M400A display will read ADJUST ZERO A D xx x MV Put the probe of a voltmeter between TP3 AGND and TP9 DAC 0 on the top of the V F board See Drawing 00514 Appendix E 5 The value displayed by the voltmeter should be close 20mV to the value on the M400A display If they are not close then the V F card has probably been configured improperly 6 Adjust the Zero pot R27 on the V F card until the value on the M400A display matches the value on the voltmeter to within 2mV NOTE When adjusting R27 the value on the M400A display will change the value on the voltmeter will remain constant 9 27 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 Press ENTR 8 The M400A display will now read ADJUST GAIN A D xx x MV 9 Adjust the Span pot R31 on the V F card until the value on the M400A display matches the value on the voltmeter to within 20mV 10 Press ENTR 11 The ADC is now calibrated and the M400A will automatically calibrate all the DAC s This process takes only a few seconds 12 Press EXIT 4 times to return to the sample menu 9 3 4 1 Output Voltage Range Changes Output voltage ranges are set by DIP switches on the V F board To change the range for the analog outputs 1 Turn off instrument power
22. Locate the red LED at the top left edge of the board It should be flashing at a frequency of about once per second This flashing indicates the board is powered up and is executing instructions Upon power up the CPU does a self test checking RAM EEPROM and other functions If there is a fault it will be shown on the front panel display S cM Mee Testing and operation of the CPU RS 232 port is described in Section 9 3 3 It is possible for the UART driver chip to malfunction in either or both of the input or output ports 9 20 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F x e N a 1 PE oo oo D m N oo 1 oo oo oo oo S5 Sh N NS oo On an oa YW mmm NW ou 9 PEN ao Of gt gt oo gt id oo oo s E EM UGE pde lt Q HH U 00 oo NEC JAPAN 52 D70208L 8 5 LEE VAO gt 9249HVC31 Ze Te mac Bee n mmn NEC JAPAN 5 017051C 911219207 o NEC JAPAN 2 071055 0 925215014 ojo Figure 9 1 CPU Board Ju
23. OUT 7 OFF VOLTAGES ON 9000 mV 1 4 6 sT 2 14 p 7 4 5586 240 040 7 Sa ET 2356 595956 1 2356 250 950 ings V F Board Setti Figure 9 3 9 29 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 5 Optical Bench Assembly 9 3 5 1 Source Lamp Power Supply Diagnosis and Adjustment Basic operation of the source lamp and detector can be determined by observing the value of the REF test function After the analyzer is warmed up 15 min to 30 min after power on this value will give a good indication of the state of Lamp and Detector operation as shown on Table 9 7 Table 9 7 UV Source Lamps and Detector Diagnostics 4700 mV to 5000 mV The Source Lamp and Detector are operating but adjustment is required 4000 mV to 4700 mV The Source Lamp and Detector are operating properly no adjustment is needed 2500 mV to 4000 mV The Source Lamp and Detector are operating Adjustment is useful but not required 175 mV to 2500 mV The Source Lamp and Detector are operating but adjustment is required 75 mV to 175 mV Either the Source Lamp or the UV detector is not functioning Less than 75 mV The Detector Pre Amp or V F Board has failed or is disconnected Checking the Lamp Power Supply A schematic and physical diagram of the Lamp Power Supply are shown on drawings 01217 and 01218 in Appendix E It is not always possible to determine with certainty wheth
24. Os gen tower Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F HOLD DOWN RING GLASS WINDOW 2 f Eg I O RING O RING WITH GUT OUTS FACING UP FILTER ELEMENI Figure 8 1 Replacing the Particulate Filter 8 5 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 8 5 Cleaning the Absorption Tube 1 Remove the center cover from the optical bench 2 Loosen the knurled nuts at each end of the quartz tube 3 Using both hands rotate the tube to free it then slide the tube towards the back of the instrument towards the lamp housing The front of the tube can now be slid past the detector block and out of the instrument CAUTION Do not cause the tube to bind against the metal housings The tube may break and cause serious injury 4 Clean the tube with soapy water by running a swab from end to end Rinse with isopropyl alcohol de ionized water then air dry Check the cleaning job by looking down the bore of the tube It should be free from dirt and lint 5 Inspect the o rings that seal the ends of the optical tube these o rings may stay seated in the manifolds when the tube is removed If there is any noticeable damage to these o rings they should be replaced See Section 8 5 for instructions 6 Re assemble the tube into the lamp housing and leak check the instrument Note It is important for proper optical alignm
25. Perform the Analog Output Step Test DIAGNOSTIC test covered in Section 9 1 3 The output voltages should cycle correctly according to the test If the board fails the Analog Output Step test above the board may be out of calibration The V F board calibration procedure is covered below Confirm the presence of appropriate power by checking for 5V between TP 4 and TP 5 15 at TP 1 and TP 3 15V at TP 2 and TP 3 If any of these voltages are incorrect check the DC Power Supply as described inSection 9 3 8 Confirm that all jumpers on the V F board are set properly as follows Table 9 6 V F Board Jumpers Factory Settings Factory Set Jumpers B2 1 2 B15 Set to match power line frequency 9 26 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 Confirm that the V F board DIP switches are set correctly by referring to Figure 9 3 NOTE If you change the dip switches for analog output range then you must do an V F calibration per this section Due to the stability of modern electronics this procedure should not have to be performed more than once a year or whenever a major sub assembly is exchanged or whenever analog output voltage range is changed To calibrate the Analog toDigital converter on the V F board do the following NOTE The accuracy of this calibration will only be as accurate as the DVM you use 1 Press SETUP MORE DIAG 2
26. Recommended Standards for Establishing Traceability 7 31 7 7 CALIBRATION OF INDEPENDENT RANGES OR AUTORANGING 0 7 32 7 7 1 Zero Span Calibration on Autorange or Dual Ranges 7 32 18 REFERENCES ee 7 33 8 MAINTENANCE een te 8 1 8 1 MAINTENANCE SCHEDULES 7 EE e nee 8 1 8 2 REPLACING THE SAMPLE PARTICULATE 8 3 8 3 CLEANING EXTERIOR SURFACES OF THE MAODA nunenssssnnnnnnnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nennen 8 4 8 4 REPLACING THE IZS ZERO AIR SCRUBBER esses esent nnn nnn 8 4 8 5 CLEANING THE ABSORPTION TUBE a ccn eta en nenne 8 6 8 6 LEAK CHECK PROCEDURE GS certe D A AD 8 10 8 07 Auto beak ODD 8 10 8 6 2 Leak Check Procedure for Standard 8 11 8 6 3 Leak Check Procedure for Units with IZS 8 11 8 6 4 Leak Check Procedure for Units with Zero Span 8 11 8 7 PROM REPLACEMENT PROGCED RE 8 12 9 TROUBLESHOOTING ADJUSTMENTS 9 1 9 1 OPERATION VERIFICATION M400A DIAGNOSTIC 9 2 9 1 1 Fault Diagnosis with
27. Remove instrument cover Locate the V F board near the front of the analyzer using Figure 2 3 2 Locate switches along the top edge of the card Select the desired range per Figure 9 3 3 Recalibrate the ADC as described in this section NOTE To adjust the recorder offset see Section 9 1 3 3 NOTE Do not attempt to change the voltage range for DAC3 S4 Doing so will result in malfunction of the IZS ozone generator 9 28 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F CLOCK OUT EXAMPLE BIPOLAR SVOL 15V AGND 15V 03 GEN DAC 3 NO RECORDER JAC 2 DAC 1 JAC 0 SWITCH POSITIONS OTHER SWITC NOTE SWITCHES 1 2 7 U NN OWING S ON 0 O 9 FULLSCALE WITH OVERRANGE 1 AND 4 ON POSITIONS OFF AVE THE OUTPU EST POIN 9 12 SWITCH POSITION 1 amp 2 3 4 5 6 7 APPROXIMAT FUNCTION BIPOLAR UNIPOLAR FULLSCALE OUTPU RANGES GAIN LIMIT TARG FOR V F CALIBRAT OUTPUT RANGE 100mV 1V 10 OF SCALE 1 2 mV 12 mV 120 mV OFF POSITION ON POSITION BIPOLAR 1 2 0FF UNIPOLAR 2 ON 1 OFF 10 5zON 4 5 6 0f 5V 4 3 5 6 0 1V 5zON 3 4 6 OFF 100mV 6 3 4 5 OFF FULLSCALE OUT 7 OVERRANGE
28. SETUP ACAL menu there are three separate auto sequences called SEQ SEQ2 and SEQ3 Under each SEQ there are five setup parameters that affect zero span checking the mode the starting date of the check the time of day for check the number of days delay between checks and time shift each check is executed These are described individually below Use the PREV and NEXT buttons to scroll through the three sequences The mode for each sequence is displayed To change the mode for any of the sequences scroll to the desired sequence and press the MODE button Use the PREV and NEXT buttons to select one of the modes shown below and press ENTR Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F Sequence Mode DISABLED Sequence is disabled ZERO ZERO LO ZERO HI ZERO LO HI LO HI LO HI LEUR oec spo SES Sms To change the setup parameters for a sequence press the SET button Pressing the SET and gt buttons allows you to scroll through the setup parameters and edit them by pressing the EDIT button The function of each setup parameter is described below Starting Date The starting date for the sequence is entered in the format of MM DD YY where MM is the month DD is the date and is the year Enter starting date and press ENTR or EXIT to leave the date unchanged Starting Time To set the time of day for the sequence enter in the format HH MM where HH is the hour in 24 hour forma
29. SPAN CHECK OR CAL WITH ZERO SPAN VALVES 7 7 7 3 MANUAL ZERO SPAN CHECK WITH 125 7 8 7 4 AUTOMATIC ZEROSPANIGHE DR e dde 7 8 7 5 USE ZERO SPAN VALVES OR 125 WITH REMOTE CONTACT 2 7 12 7 6 EPA PROTOCOL VAR MER AR 7 13 7 6 1 M400A Calibration General Guidelines 7 13 7 6 2 Calibration Equipment Supplies and 7 15 7 6 3 Calibration Gas and Zero Air 2 4440 000 1 11 7 16 7 6 4 Data Recording Device ame aeg 7 17 7 6 5 Record KGeoplh o ee 7 17 7 6 6 Dynamic Multipoint Calibration 7 18 7 6 7 Multipoint CallDraltlOti oci nope t ten teren dene me eden 7 20 Audiung itis atq xenon dax aep ta ted iu tax pede deg 7 23 7 6 9 Multipoint Calibration aede ce re 7 23 7 6 10 System AUD tote petro een 7 25 7 6 11 GalibrationFrequern6y x t catio Lodi t va foc Uu aci 7 25 7 6 12 Summary of Quality Assurance 7 26 7 0 19 ZERO and SPAN Checks ana han 7 30 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 14
30. TEST 000 9 2 9 1 2 Fault Diagnosis with WARNING 9 5 9 1 3 Fault Diagnosis using DIAGNOSTIC 9 7 9 1 4 M400A Internal Variables uunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn 9 12 9 2 PERFORMANCE PROBLEMS ine near ERO AES ssn tare aes sees UM Re 9 14 9 2 1 AC Power Ohe k ern Ac LA CL EA A CA ce 9 15 9 2 2 Temperature 9 15 9 2 9 EXCESSIVE NOISE see 9 17 9 2 4 UnistaDle Span eee 9 17 98 2 5 unstable acu band DE AD CLAN 9 17 9 26 Inability to Spa 9 18 2 TMA WILY tO Zee coco te 9 18 9 2 8 Analog Output Doesn t Agree with Display Concentration 9 18 9 3 SUBSYSTEM TROUBLESHOOTING AND ADJUSTMENTS eene 9 19 9 3 1 Computer Display 00242244 9 19 9 3 2 126 Submux Board ee rear 9 22 9 3 9 09 232 COMMUMICAUONS ae Pla Cu R ERE Eaa Ena 9 24 9 3 4 Voltage Frequency V F Board Diagnosis and Calibration
31. V F assembly to the rest of the instrument taking note of the polarity 4 Remove the assembly laying it down on an insulating surface such that the CPU is face up and the backplane card is on the left The PROM chip should be at the top center of the CPU See Figure 9 1 for component location The current chip should be labeled with something like 11AB7STD 1 1 Gently pry the chip from its socket and replace it with the new chip Install the chip in the left end of the socket with the notch facing to the right Make sure that all of the legs insert into the socket correctly 5 Re attach all cables making sure to observe the polarity then replace the CPU V F assembly and tighten the screw on the backplane bracket 6 Turn instrument power ON and observe the front panel display As the analyzer goes through the setup the version number will be displayed on the front panel It should read the same as the version number that was located on the top right corner of the label on the PROM 7 Re enter any non default settings such as RANGE or AUTOCAL Check all settings to make sure that expected setup parameters are present 8 Re calibrate the analyzer so that the default slope and intercept are overwritten with the correct values 8 12 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 9 TROUBLESHOOTING ADJUSTMENTS NOTE The operations outlined in this chapter are to be performed by qualified maintenance
32. and adjust as required 9 2 5 Unstable Zero 1 2 3 4 Check for leaks in the pneumatic system as described in Section 9 3 12 Confirm that the Zero gas is free of Ozone Check for a dirty particulate filter and replace as necessary as described in Section 8 2 Confirm that the Source Lamp is fully inserted and that the lamp hold down thumb screw is tight Check for a dirty Absorption Cell and or pneumatic lines Clean as necessary as described in Section 8 4 Disconnect the exhaust line from the optical bench the pneumatic line at the lamp end of the bench and plug the port in the bench If readings remain noisy the problem is in one of the electronic sections of the instrument If readings become quiet the problem is in the instrument s pneumatics 9 17 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 2 6 Inability to Span I Confirm that the ozone span gas source is accurate this is the 1 problem reported by our service department Check for leaks in the pneumatic systems as described in Section 9 3 12 Check for proper operation of the Main Switching Valve and Ozone Scrubber as described in Section 9 3 6 Check for a dirty particulate filter and replace as necessary as described in Section 8 2 Check for dirty pneumatic system components and clean or replace as necessary as described in Section 9 3 12 Check for proper adjustment of DAC and ADC electronics by performin
33. and displays information The first field 1s the mode field A list of operating modes is given in Table 4 1 The center field displays TEST values or WARNING messages The TEST functions are described in Table 9 1 The meaning of the WARNING messages is given in Table 9 2 In DIAGNOSTIC mode the center field is used to report the results of the diagnostic tests The right hand field shows current ozone concentration Table 4 1 System Modes Mode Meaning SAMPLE Sampling normally flashing indicates adaptive filter is on SAMPLE xx 1 Sampling normally with AutoCal enabled ZERO CAL x 2 Doing a zero check or adjust SPAN CAL x 2 Doing a span check or adjust MP CAL Doing a multi point calibration SETUP xxx 3 Configuring analyzer sampling continues DIAG I O Diagnostic Mode Test digital I O signals DIAG AOUT Diagnostic Mode Test analog output channels DIAG D A Diagnostic Mode Configure and Calibrate D A outputs DIAG O3GEN Diagnostic Mode Ozone Generator Calibration DIAG TCHN Diagnostic Mode Configure Test Channel output 1 xx A AutoCal enabled 2 x M manual cal A cal with AutoCal sequence R cal using remote contact closure or RS 232 3 xxx software revision 4 3 5 2 Programmable Pushbuttons The 8 pushbuttons below the display are programmable by the CPU in that their functions change depending on the mode of the Analyzer or the operations being performed Th
34. calibration data is not added to the DAS averages If the SPAN button is not displayed this means that the span reading is too far out of adjustment to do a reliable calibration The reason for this must be determined before the analyzer can be calibrated See Section 9 2 for troubleshooting calibration problems 7 5 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F ZERO AIR MODEL 701 SOURCE MODEI W UV 7 00 CALIBRATOR PHOTOM ETER O PTION M400A ANALYZER NOTE MAXIMUM TUBING LENGTH METERS NOTE TUBING 1 4 PTFE OR CLASS SAMPLE INLE EXHAUST VENT TO ATMOSPHERE Figure 7 1 Calibration Pneumatic Diagram 7 6 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 2 Manual Zero Span Check or Cal with Zero Span Valves Option Zero and Span checks using the Zero Span Valves option is similar to that described in Section 7 1 except that external zero and span gas is supplied to the analyzer through the zero span valves rather than through the sample inlet port Procedures are covered in Table 7 6 and Table 7 7 The Zero Span valve option can be operated from the front panel keyboard With the Zero Span valve option the zero and span gas come enters through ports on the rear panel of the instrument Table 7 6 Manual Zero Calibration Procedure Z S Valves Step Number Action
35. dilution ratio R is calculated as the flow of the original concentration F divided by the total flow F Fa F gt F F 7 18 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F With stable high resolution flowmeters and with careful technique R should be accurate to within 1 When has been adjusted and has been calculated assay the diluted concentration with the photometer and then compare the diluted assay A2 with the original undiluted assay A1 by calculating the percentage of linearity error E according to the following equation A A R pou se 1 This linearity error must be lt 5 in magnitude and should be lt 3 for well performing system NOTE The result is not the true linearity error because it includes possible errors in the flow measurements the test is only an indicator If the linearity error is gt 5 or is greater than you expect it to be check and verify the accuracy of the flow dilution carefully before assuming that the photometer is inaccurate The test should be carried out several times at various dilution ratios and an averaging technique should be used to determine the final result If the linearity error is excessive and cannot be attributed to flow measurement inaccuracy check the photometer system for Dirty or contaminated cell lines or manifold Inadequate conditioning of the system Leaking of two way valve
36. edit followed by ENTR The High and Low ranges have separate slopes and offsets for computing the ozone concentration Therefore the two ranges must be independently calibrated See Section 7 7 for details on calibrating the two ranges 5 3 4 3 Auto Range Mode In auto range mode the analyzer automatically switches between the Low and High range depending on the concentration When the concentration increases to 9896 of the Low range value the analyzer will switch to the High range The analyzer will remain in the High range until the concentration drops to 75 of the Low range value It will then switch back to the Low range Auto ranging changes the range for the REC and DAS outputs simultaneously To set the ranges press SETUP RNGE SET and select which range you want to edit followed by ENTR The High and Low ranges have separate slopes and offsets for computing the ozone concentration Therefore the two ranges must be independently calibrated See Section 7 7 for details on calibrating the two ranges 5 12 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 3 4 4 Concentration Units The M400A can display concentrations in ppb ppm ug m mg m units Concentrations displayed in mg m and ug m use 0 C 760 mmHg for STP Consult your local regulations for the STP used by your agency The following equations give approximate conversions O ppb x 2 14 ug m ppm x 2 14 mg m
37. for Prevention of Significant Deterioration PSD Air Monitoring Code of Federal Regulations Title 40 Part 50 Appendix D Aeros Manual Series Volume II Aeros User s Manual EPA 450 2 76 029 OAQPS No 1 2 039 December 1976 Quality Assurance Handbook for Air Pollution Measurement Systems Volume II abbreviated Q A Handbook Volume IT National Technical Information Service NTIS Phone 703 487 4650 part number PB 273 518 or the USEPA Center for Environmental Research Information 513 569 7562 part number EPA 600 4 77 027A 7 33 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F INTENTIONALLY BLANK 7 34 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 8 MAINTENANCE 8 1 Maintenance Schedule Table 8 1 shows a typical maintenance schedule for the Model 400A Please note that in certain environments i e dusty very high ambient pollutant levels some maintenance procedures may need to be performed more often than shown NOTE The M400A must be re calibrated after any of the maintenance procedure are performed Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F Table 8 1 M400A Maintenance Schedule Sample Filter Element IZS Zero Air Scrubber Pump Diaphragm ZERO Air Filter Scrubber Sample Cell Sample Flow Leak Check IZS Zero Air Filter 8 2 Replace weekly or as needed R
38. indicates an off scale and therefore meaningless reading To use the TEST functions to diagnose instrument faults refer to Troubleshooting Section 9 Range This is the range of the instrument The M400A has one physical range that covers the entire concentration range from 100 to 20 000 ppb full scale The front panel display will always show the concentration correctly no matter what range the instrument is operating in The rear panel analog output for each range is scaled to fit the range of voltage or current the instrument is set up for There are 3 range modes to choose from 1 Single range mode sets a single maximum range for the instrument analog output 2 Autorange mode allows a low range and high range The M400A will automatically switch to the other range dynamically as concentration values require The TEST values will show the range the instrument is currently operating in and will dynamically display the alternate range as the range changes occur 3 Dual range provides 2 continuous analog outputs on the rear panel each output is scaled to the range selected by the user NOTE Each of the range modes Single range Autorange and Independent ranges are mutually exclusive Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F Stability The instrument noise is computed using the standard deviation of the last 10 minutes of data with the value being updated at the end of each
39. measure reference cycle The value only becomes meaningful if sampling a constant concentration for more than 10 minutes The value should be compared to the value observed in the factory checkout O Measure Voltage The Measure Signal is the intensity of light when sample gas was in the Optical Bench during the most recent measurement cycle This voltage is the digitized mV reading measured by the V F board O Reference Voltage The O Reference Signal is the intensity of light when reference gas was in the Optical Bench during the most recent measurement cycle This voltage is the digitized mV reading measured by the V F board O Generator Reference Detector IZS option only This is the Ozone Generator UV lamp intensity measured by the Reference Detector option in the IZS ozone generator This signal is used to control the drive current to the lamp thus improving the stability of the IZS ozone output Generator Drive Voltage IZS option only The Drive Voltage a DC voltage used to program the power supply for the ozone generating UV lamp in the IZS option The value of this voltage determines the concentration of ozone generated by the IZS Vacuum Vacuum is the absolute pressure measured down stream of the sample flow orifice Typical readings are 12 in Hg Abs Sample Pressure The pressure in the sample inlet line is measured by a solid state pressure sensor which measures absolute pressure Absolute pressure wa
40. of the intensity of light passing through the scrubbed gas to that of the sample forms a ratio 1 0 This ratio forms the basis for the calculation of the ozone concentration The Beer Lambert equation shown below calculates the concentration of ozone from the ratio of light intensities 10 T 2992inHg I x4 Co x x 3 axl 273 P I Where I Intensity of light passed through the sample I Intensity of light through sample free of ozone absorption coefficient path length Co concentration of ozone in ppb 3 T sample temperature in degrees Kelvin P pressure in inches of mercury As can be seen the concentration of ozone depends on more than the intensity ratio Temperature and pressure influence the density of the sample The density changes the number of ozone molecules in the absorption tube which changes the amount of light removed from the light beam These effects are addressed by directly measuring temperature and pressure and including their actual values in the calculation Temperature and pressure compensation are done automatically Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 4 1 4 1 The absorption coefficient is a number that reflects the inherent ability of ozone to absorb 254 nm light Most current measurements place this value at 308 cm at STP The value of this number reflects the fact that ozone is a very efficient absorber of UV
41. operated in Dual Range mode or Auto Ranging mode then the High and Low ranges must be independently calibrated When the analyzer is in Dual or Auto Range mode you will be prompted to enter the range to calibrate whenever you enter a calibration command from the front panel Press HIGH or LOW followed by the ENTR button to proceed with the calibration To calibrate the other range you must exit to the sample menu and restart the calibration See Section 5 3 4 for more information on the Range Modes Table 7 18 shows an example of how to calibrate the two ranges with calibration gas coming in through the sample port Table 7 18 Calibration of AutoRange or Dual Range 2 Press LOW ENTR 4 Press ZERO ENTR 5 Press CONC SPAN Key in span concentration e Press SPAN ENTR Comment AutoRange or Dual Range features must be selected from the SETUP RNGE menu before calibration Analyzer enters M P calibration mode Calibration gas source should be set to deliver zero gas to the sample port Select range to calibrate This will enable zero calibration on the low range Wait for O reading to stabilize at zero value Changes calibration equations for Low range so analyzer will read zero Enter span gas concentration for Low range Enter span gas concentration for Low Range Set calibration gas source to deliver span concentration Wait for reading to stabilize at Low span value Changes calibration equa
42. or other system components Contaminated zero air Non linear detectors in the photometer Ov UL Faulty electronics in the photometer 7 19 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 6 2 Loss Correction Factor In spite of scrupulous cleaning and preconditioning some may be lost on contact with the photometer cell walls and the gas handling components Any significant loss of must be quantitatively determined and used to correct the output concentration assay In any case the loss must not exceed 5 To determine O loss calibrate a stable ozone analyzer with the UV calibration system assuming no losses Then generate an concentration and measure it with the analyzer as close as possible to the actual inlet of the photometer cell Similarly measure the concentration as close as possible to the outlet of the cell Repeat each measurement several times to get a reliable average and measure the concentration at the output manifold The tests should be repeated at several different concentrations The percentage of O loss is calculated as C C C Ri 0O loss x 100 where concentration measured at cell inlet ppm Co concentration measured at cell outlet ppm and Cm Os concentration measured at output manifold ppm For other configurations the O5 loss may have to be calculate
43. reading T PHOTOREF Current reference reading T O3GENREF Ozone generator reference reading T O3GENDRIVE Ozone generator lamp drive voltage 5 28 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 4 WARNING Commands and Messages Warning messages are sent both to the display and to the RS 232 output See Table 5 13 for a list of the warning messages These messages are very helpful when trying to track down a system problem and for determining whether or not DAS average data is actually valid An example of an actual warning message is W 194 11 03 0000 SAMPLE FLOW WARN Warnings may be cleared via the RS 232 interface by issuing a command of the form W command where command indicates which warning message to clear For example to clear the SAMPLE FLOW WARN message the host computer can issue the command W WSAMPFLOW Attempting to clear a warning which is not active has no effect Table 5 13 lists the command to use to clear each possible warning message W CLEAR ALL clears all warning messages Table 5 13 Warning Message Clear Commands Command Warning Message Cleared W CLEAR ALL CLEARS ALL WARNING MESSAGES CLEARS ALL WARNING MESSAGES WWPHOTOREF W WSAMPFLOW SAMPLE FLOW WARNING WWSAMPRES WWSAMPTEME WWROXTEME W WO3GENTENP W WPHOTOLTEMP PHOTO LAMP TEMP WARNING W WVFINS V F NOT INSTALLED 5 29 Teledyne Model 400A
44. should be used NOTE If there are any problems completing the following procedures refer to Section 9 2 6 and 9 2 7 Inability to Span and Zero Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 1 Types of Zero Span Check and Calibration Section Type of Cal or Check Description Manual Z S Check or Calibration This calibration option uses calibration gas through the sample port coming in through the sample port IZS and Zero Span valves if present do not operate Manual Z S Check or Calibration with How to operate Zero Span Valves Option Can be Z S Valves Option used to check or adjust calibration Manual Z S Check with IZS Option How to operate IZS option Can be used to check or adjust calibration Automatic Z S Check with Z S Valves Use of AutoCal to operate Z S valves or IZS once or IZS Options per day to check the calibration Use of Z S Valves or IZS with Remote Operates Z S valves or IZS with rear panel Contact Closure contact closures Without valves or IZS can be used to switch instrument into zero or span cal mode Used for either checking or adjusting zero span 7 6 EPA Protocol Calibration Covers methods to be used if data is for EPA equivalency monitoring 7 7 Special Calibration Requirements for Covers special requirements if using Independent Independent Ranges or AutoRanging Range or AutoRange 7 8 References Contains a list of references on
45. temp Ozone Generator heater Should cycle ON OFF every 5 sec to 1 min On continuously until up to temp 9 40 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F YOLOSLAC STVNOIS MMd HON3H AN 5 3snivdddW3l 1139 YMd W3lv3H dWVI 34nivM3dW3l 37 M3MOd 3ATVA M3MOd M31V3H MJMOd JATVA VNSIS dN3L MJMOd 31n00N 252535 M3MOd W3lV3H M3MOd M3lv3H dans M3MOd QMVOSN3HION 91901 STVNOIS 33MOd M3MOd IVNOIS auvog A A OV sng 0 1 5 Ndo QMvOS m MOLOINNOI INO EN _ T3Nvd 2 VNSISINI M3MOd zez sy 91901 2 6 N S M3MOd san aa MS M3MOd OV davoga 1 3Nvd 1NOMJ Figure 9 5 Electrical Block Diagram 9 41 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Checking the Power Sub Systems Refer to the electrical block diagram in Figure 9 5 for help 1 Check incoming line power for proper Voltage and Frequency 2 Check the Circuit breaker on the Analyzer s rear panel 3 Check the 3 wire safety power input plug on the Analyzer s rear panel CAUTION Hazardous voltages are present on the power supply module Always re
46. terminal mode echo edit Control C ASCII 3 decimal Switch to computer mode no echo no edit If the command line doesn t seem to respond to keystrokes or commands one of the first things you should do is send a Control T to switch the command line interface into terminal mode Also some communication programs remove CTRL T and CTRL C characters from the byte stream therefore these characters will not be sent to the analyzer Check your communications program owners manual Entering Commands in Terminal Mode In terminal mode all commands must be terminated by a carriage return commands are not processed until a carriage return is entered While entering a command you may use the following editing keys Table 5 9 RS 232 Terminal Mode Editing Keys Key Function CR carriage return Execute command BS backspace Backspace one character to the left ESC escape Commands are not case sensitive you should separate all command elements i e keywords data values etc by spaces Words such as T SET LIST etc are called keywords and are shown on the help screen in uppercase but they are not case sensitive You must type the entire keyword abbreviations are not accepted NOTE To open the help screen Type and press the Enter key 5 23 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 1 1 Protocol Selection The RS 232 interface will support more than one c
47. to lead and lead to chassis Heater resistance should be in the range 200 2000 ohms depending on the wattage of the heater Resistance of heater to chassis should be infinite WARNING Hazardous voltages present use CAUTION 9 16 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 2 3 Excessive Noise 15 2 Check for leaks in the pneumatic systems as described in Section 9 3 12 Confirm the Sample Temperature Sample Pressure Photo Lamp Temperature and Sample Flow readings are correct Check and adjust as required UV Lamp may need replacement If spare lamp is available replace lamp and check noise If spare lamp is not available consult factory for assistance Unplug lamp and plug back in If noise goes away change lamp or power supply change PROM to updated software 9 2 4 Unstable Span Check for leaks in the pneumatic systems as described in Section 9 3 12 Check for proper operation of the Main Switching Valve and Ozone Scrubber as described in Section 9 3 6 Check for a dirty particulate filter and replace as necessary as described in Section 8 2 Check for dirty pneumatic system components and clean or replace as necessary as described in Section 9 3 12 Check for proper adjustment of DAC and ADC electronics by performing the adjustment procedure in Section 9 3 4 Confirm the Sample Temperature Sample Pressure and Sample Flow readings are correct Check
48. without any special preparation or adjustment of the system Routine quality control checks such as zero and span checks in Section 7 1 conducted by the operator are necessary for obtaining and reporting good quality data but they are not considered part of the auditing procedure Three audits are recommended two performance audits and a systems audit These audits are summarized in Table 7 15 at the end of this section See Sections 2 0 11 and 2 0 12 of the Manual Ref 11 for detailed procedures for a systems audit and for a performance audit respectively Proper implementation of an auditing program will serve a twofold purpose 1 to ensure the integrity of the data and 2 to assess the data for accuracy The technique for estimating the accuracy of the data is given in Section 2 0 8 of the Manual Ref 11 7 6 9 Multipoint Calibration Audit A performance audit consists of challenging the continuous analyzer with known concentrations of Os within the measurement range of the analyzer The difference between the known concentration and the analyzer response is obtained and an estimate of the analyzer s accuracy is determined 7 6 9 1 Multipoint Audit Procedure Known concentrations of must be generated by a stable source and assayed by the primary UV photometric procedure or may be obtained using a certified transfer standard Procedures used to generate and assay Os concentrations are the same as those d
49. 0000000000 10 2 TABLE 10 1 TELEDYNE API M400A SPARE PARTS LIST 2 2 2 2 1421010 00000000000000000000000500050800 nennen nennen 10 3 TABLE 10 2 TELEDYNE API MODEL 400A LEVEL 1 SPARES nest net nnn nnne 10 3 TABLE 10 3 TELEDYNE API MODEL 400A EXPENDABLES KIT FOR IZS enne ener nennen 10 4 TABLE 10 4 TELEDYNE API MODEL 400A SPARES KIT FOR 1 10 4 TABLE 1 ELECTRICAL SCHEMATICS S eniti seit catu rata anu Rat A 1 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F INTENTIONALLY BLANK Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 1 HOW TO USE THIS MANUAL Teledyne API is pleased that you have purchased the Model 400A UV Photometric Ozone Analyzer The keyboard with it s talking keys allows you to quickly and easily set up the instrument The built in tests and diagnostics make problem location and diagnosis easy In addition our customer service department is available to assist with any problems you may have The 400 microprocessor continually checks operating parameters such as temperature flow and critical voltages If you encounter any difficulty refer to Section 9 General Troubleshooting Hints We recognize that the need for information in this manual changes as time passes When the in
50. 01r I Rm B E Alddns M4IMOd JV 431009 A3HALIMS 9f MJMOd OV INANI 97 Figure 9 4 Power Supply Module Layout 9 39 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F PSM Diagnostic Procedures The Linear Power Supply board can be tested by checking the DCPS TEST function on the front panel It should read 2500mV 100mV If the value is outside this range individual output voltages can be tested on connector P3 see Schematic in the Appendix for pinouts The Switching Power Supply output can be tested by observing the REF VOLTAGE TEST function on the front panel It should be between 2500 and 4500mV The Switch Board can be tested by observing the diagnostic LEDS along the top edge of the board The following Table 9 9 describes the typical operation of each LED Table 9 9 Power Supply Module LED Operation No Function Description Measure Reference Valve Should switch about every 3 sec On Measure mode Off Reference mode Sample Cal Valve Should switch ON when CALZ or CALS button is pressed No function Zero Span Valve Should switch ON when CALS button is pressed Pump power Switches the power to the sample pump On if instrument is powered up Source lamp heater Should cycle ON OFF every 5 sec to 1 min On continuously until up to temp Sample flow control block Should cycle ON OFF every 5 sec to 1 min On heater continuously until up to
51. 0A Analyzer Instruction Manual 02260 Rev F 9 2 1 AC Power Check 1 Check that power is present at main line power input Verify that correct voltage and frequency is present If unit is set for 240V AC and is plugged into 115V AC it will appear as no power fault 2 Check that the unit is plugged into a good socket Analyzer must have 3 wire safety power input 3 Check circuit breaker Circuit breaker is part of the front panel power switch It is set each time the instrument power is turned on If there is an internal short causing a trip the switch will automatically return to the OFF position when an attempt is made to turn it on 9 2 2 Temperature Problems The Model 400A has been designed to operate at ambient temperatures between 59C and 40 C As a first step in troubleshooting temperature problems confirm the ambient temperature is within this range and that the air inlets slots on the sides of the cover and the fan exhaust on the rear panel are not obstructed The instrument monitors five temperatures Sample Temperature Inside Chassis Temperature 1 2 3 Source Lamp Temperature 4 IZS Lamp Temperature Option 5 Orifice Manifold Temperature and controls the temperatures of three components by heating 1 Orifice Manifold 2 Source Lamp 3 IZS Lamp Option If any of the temperature readings appear to be incorrect check for proper thermistor operation by measuring the resistance of the thermistor s
52. 13 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 2 Performance Problems Dynamic problems i e problems which only manifest themselves when the analyzer is monitoring sample gas can be the most difficult and time consuming to isolate and resolve Additionally analyzer behavior which appears to be a dynamic problem is often a symptom of a seemingly unrelated static problem For these reasons it is recommended that dynamic problems not be addressed until all static problems and warning conditions as described in the preceding sections have been isolated and resolved If all the checks described in the preceding sections have been successfully performed the following will provide an itemization of the most common dynamic problems with recommended troubleshooting checks and corrective actions NOTE It has been our experience that about 50 of all analyzer performance problems are sooner or later traced to leaks in some part of the system 1 Fluctuations in flow such as leaks or plugged orifices 2 Lack of preventive maintenance dirty plugged sample filter 3 Change in zero air source A Aircontaining ozone leaking into zero air line B Saturation of IZS zero air scrubbers 4 Change in span gas concentration A Zero air or ambient air leaking into span gas line Leak Ref Measure switching valve D Loose pneumatic fittings 9 14 Teledyne Model 40
53. 9 for information on how to calibrate the IZS concentration setting If the IZS feedback option is purchased the ozone generator feedback mode should be set to REF To set the feedback mode to REF press SETUP MORE O3 MODE REF and press ENTR The IZS ozone lamp drive circuit will be actively adjusted to maintain the IZS reference set point 6 1 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Setup the IZS Option To set the Low Span concentration precision point for Auto Cal Sequences press SETUP MORE VARS Press NEXT until the GEN LOWI variable is displayed To change the concentration press EDIT and enter the desired concentration If the analyzer is being operated in Dual or Auto Range mode then there is a second variable named GEN LOWZ2 that sets the Low Span concentration for the High range This variable can be changed using the method described above When the CALS button is pressed the ozone generator is turned on and the lamp drive is determined by looking up the user specified concentration in the table computed during the calibration procedure and interpolating between the two nearest concentration readings in the table This yields the initial lamp drive setting and the IZS reference set point 6 4 Autocal Setup to Support IZS and Z S Valve Option The AutoCal system allows unattended periodic operation of the IZS and Z S valve options by using the M400A s internal time of day clock
54. A Analyzer Instruction Manual 02260 Rev F 7 5 Use of Zero Span Valves or IZS with Remote Contact Closure A span or zero check may be initiated by means of two rear panel contact closures See Figure 2 2 for connector location The CPU monitors logic signals once each second and looks for a positive level on either signal The instrument responses are shown in Table 7 8 The external contact closure should be closed for at least 1 second When both states go to 0 open the CPU will go into DAS hold off The remote calibration signals may be activated in any sequence It is recommended that contact closures remain closed for at least 10 minutes to establish a reliable reading See Section 6 2 and 6 3 for further details Table 7 8 Remote Contact Closure Truth Table Contact Closure States EXT ZERO CAL EXT SPAN CAL 0 open Sample Mode 1 Span check 7 12 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 EPA Protocol Calibration In order to insure that high quality accurate measurement information is obtained at all times the Model 400A O Analyzer must be calibrated prior to use A quality assurance program centered on this aspect and including attention to the built in warning features of the Model 400A periodic inspection regular zero span checks and routine maintenance is paramount to achieving this See Table 7 9 In order that the users have a more complete appreciation and better un
55. AM HE 4 4 lade ud IUD 4 9 SAMPLE MENU TREE Ka aan amet SI ds 5 2 SETUP MENU TREE nass er ety te bae tee e delectet e ite eee Ec PE ERE aes 5 3 CALIBRATION PNEUMATIC DIAGRAM 2 02 20222 04 0002000000000000000000000000000 7 6 REPLACING THE PARTICULATE 8 5 OPTICAL BENCH ASSEMBLY unse ehe einsamen ec nhe eee C Rev stein e repe 8 7 PNEUMATIC DIAGRAM STANDARD CONFIGURATION 2 0 011 8 8 PNEUMATIC DIAGRAM ZERO SPAN VALVES amp IZS 8 9 CPU BOARD JUMPER SETTINGS innen tiet pee aedes dv ee 9 21 RS 232 PIN ASSIGNMENTS V F BOARD SETTINGS POWER SUPPLY MODULE LAY OUT 5 5 QN VERF ERE EE 9 39 ELECTRICAL BEOCK DIAGRAM 52 5 etre e nie are t a ate de eai d 9 41 IZS MODULE rr e Ep aerea leer idea t itt eee conde cau ed e arre ee 9 44 PRESSURE FLOW SENSOR MODULE essen nennen enne eth 9 46 vii Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F LIST OF TABLES TABLE 2 1 FINAL TEST AND CALIBRATION 5 2 21 0 2 0110100000000000000000000000000000000 0 2 9 TABEE4 1 SYSTEMI MODES iere etr ie eurer e nn de EE EE ER e 4 7 2 S TATUSIEBD
56. AN VALVE Table 10 2 Teledyne MODEL 400A Level 1 Spares Kit 028180000 M400A LEVEL 1 SPARES KIT 000941000 ORIFICE 13 MIL 006120100 UV LAMP ASSY IZS GEN 022400000 M400A VALVE MODULE 1 1 2 022710000 ABSORPTION TUBE M400A FL0000005 M400 OZONE SCRUBBER INTERNAL 022550000 ASSY IZS HEATER THERMISTOR M400A PU0000022 PUMP REBUILD KIT 10 3 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 10 3 Teledyne API MODEL 400A Expendables Kit For IZS Part No 028190000 M400A EXPENDABLES KIT IZS 005960000 006900000 FL0000001 FL0000003 PU0000022 ACTIVATED CHARCOAL Table 10 4 Teledyne API MODEL 400A Spares Kit for 1 Unit Part No 028180100 M400A SPARES KIT FOR 1 UNITS 024190000 022550000 0000010 ASSY HEATER THERMISTOR OPTICAL BENCH ASSY IZS HEATER THERMISTOR M400A 10 4 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F APPENDIX A ELECTRICAL SCHEMATICS Table A 1 Electrical Schematics UV Lamp Power Supply Assembly DC Power Supply Assembly Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev INTENTIONALLY BLANK A 2
57. An O REF value of approximately 125mV usually indicates a total failure of either the source lamp or the detector To determine which component is at fault remove the top cover of the optical bench and observe the lamp end of the quartz absorption tube If a blue white light is visible the lamp is operating and the detector is at fault and should be replaced If no light is visible the lamp power supply should be checked as described in this Section If the Lamp Power Supply check is satisfactory then the lamp has failed and should be replaced NOTE In cold ambient conditions it may require 5 to 15 minutes of warm up before the source lamp initially fires Be sure to wait for this period before troubleshooting the lamp detector 9 31 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Adjust the drive power of the lamp power supply as follows 1 Remove the cover of the lamp power supply Attach a DVM across TP7 and TP14 and adjust the pot RV1 until the DVM reads 20 volts 1 volt 2 Remove the cap on the detector preamp cover Turn pot 25 turns CW then 5 turns CCW 3 Adjust the positioning of the source lamp as follows A At the front panel of the instrument Press the TEST key until REFZXXXXX is displayed B Loosen the lamp retaining thumb screw and rotate the lamp until the O3 REF reading on display is 4500 mV x 320 mV Re tighten the thumb screw Note that the full range of
58. E MODE I O SIGNALS kan ep E Ee Cu EXE RE 9 8 TABLE 9 3 DIAGNOSTIC MODE I O SIGNALS 2 4 40 0 0020000440000000000000000000000008000000050000 9 9 TABLE 9 3 DIAGNOSTIC MODE I O SIGNALS 9 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F TABEEI 4 TEST CHANNEL QUTPUTS 2 4 a aote aea ctia arde e e GE dra I eie OR ET quee 9 12 TABEE9 5 MODEL 400A V ARIABLES co aeree tette den 9 13 TABLE 9 6 V F BOARD JUMPERS FACTORY SETTINGS cccccccccscssssscecececeesesseseceeccecsesssaeceeececsesssaececececsensaaeseceeeeseseasaeseeeess 9 26 TABLE 9 7 UV SOURCE LAMPS AND DETECTOR DIAGNOSTICS 2000000 0 0 0000000000000000000000000000000000 9 30 TABLE 9 8 POWER SUPPLY MODULE SUBASSEMBLIES 2 2 171 020 2220 010000000000000000000000000000000000 ganas esset seen 9 38 TABLE 9 9 POWER SUPPLY MODULE LED OPERATION c cccccccsesessscesececeesenseaeceeececsesaaeceeececseseaascecececeenesaeseceesceeseaaaeeeeeens 9 40 TABLE 10 1 TELEDYNE API M400A SPARE PARTS LIST eese enne 10 1 TABLE 10 1 TELEDYNE API M400A SPARE PARTS LIST CONTINUED cesses 00
59. ENTER Whenever the diagnostic mode is entered or exited a report is issued to the RS 232 output Table 5 17 summarizes the diagnostic reports Table 5 17 Diagnostic Reports Report C DDD HH MM IIII ENTER DIAGNOSTIC MODE C DDD HH MM IIII EXIT DIAGNOSTIC MODE 5 32 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 7 DAS Commands and Message Data from individual Data Channels in the DAS system can be retrieved through the RS 232 interface The command format for printing the data for a Data Channel is shown below D id REPORT name RECORDS number COMPACT VERBOSE parameters in are optional id is the analyzers ID number SETUP MORE COMM ID name is the Data Channel name must be enclosed in quotes number is the number of records to print beginning with the most recent if this parameter is not specified then all available records for the Data Channel are printed COMPACTIVERBOSE refers to the report format 5 5 7 1 Average Concentration Report To report the last record from the CONCI Data Channel in VERBOSE format type D REPORT 1 RECORDS 1 VERBOSE D 63 11 40 0400 CONC AVG CONCI 482 7 PPB lt CRLF gt CONC is a user defined name used to identify the data channel Following the colon the report indicates that the average concentration of range 1 CONCI is 482 7 PPB 5 5 7 2 Calibration Parameter Report The following DAS report shows the calibr
60. Generator UV detector reading Typically 2500 4500mV 10 PHOTO SAMP PRES NO Sample pressure in mV Typical sea level value 4300mV for 29 9 HG A Typically 2500mV Orifice manifold temperature inmV Generator temp Typically 2270mV for 48C 9 8 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 9 3 Diagnostic Mode Signals Continued Ier SAMPLE TEMP NO Sample temp in mV Photometer Lamp temp Typically 2740 mV for 52 REF TEMP 70 Calibration for thermistors Calibration voltage for thermistors 7C C Po concour ves Orne ECV o 28 EXT_ZERO_CAL NO Shows state of status input bit to cause the M400A to enter Zero Calibration mode Use to check external contact closure circuitry 29 EXT_LO_SPAN NO Shows state of status input bit to cause the M400A to enter the precision point Calibration mode Use to check external contact closure circuitry 30 EXT_SPAN_CAL NO Shows state of status input bit to cause the M400A to enter the Span Calibration mode Use to check external contact closure circuitry CONTROL IN 1 Shows state of control input bit for low span check CONTROL IN 2 Unused control input bit spare CONTROL IN 3 Unused control input bit spare 34 ST SYSTEM OK YES Status Bit System OK Logic High No instrument warning present Logic Low z 1 or more alarm present 35 ST LAMP ALARM YES Status
61. INSTRUCTION MANUAL MODEL 400A OZONE ANALYZER TELEDYNE INSTRUMENTS ADVANCED POLLUTION INSTRUMENTATION DIVISION T API 6565 NANCY RIDGE DRIVE SAN DIEGO CA 92121 2251 TOLL FREE 800 324 5190 FAX 858 657 9816 TEL 858 657 9800 E MAIL api sales teledyne com WEB SITE www teledyne api com 02260 REV F Copyright 1999 API Inc 07 20 99 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F SAFETY MESSAGES Your safety and the safety of others is very important We have provided many important safety messages in this manual Please read these messages carefully A safety message alerts you to potential hazards that could hurt you or others Each safety message is associated with a safety alert symbol These symbols are found in the manual and inside the instrument The definition of these symbols is described below GENERAL WARNING CAUTION Refer to the instructions for details on the specific danger CAUTION Hot Surface Warning CAUTION Electrical Shock Hazard Technician Symbol operations marked with this symbol are to be performed by qualified maintenance personnel only CAUTION The analyzer should only be used for the purpose and in the manner described in this manual If you use the analyzer in a manner other than that for which it was intended unpredictable behavior could ensue with possible hazardous consequences Teledyne Model 400A Analyzer I
62. IS ee a am bU 4 8 9 12 HT 5 9 TABLEE2 2 PASSWORD LEVELS tete ee ene EHE CE UNE rte ENDE rt eet cte HR ER PUE ev ERN TRUE RES 5 14 TABEES 3 RS 232 VARIABEE NAMES ea e Sou vine rere Sedu E DI doen Seca ERU REED e a ope te eu 5 16 TABLE 5 4 STATUS OUTPUTS a uni dese reb eran dude 5 17 TABLE 5 5 RS 232 MESSAGE TYPES cccccccccccssssssececececsessnaececccecsesenseaesececeesesaaesecececsessaaeceeececsessasececececeeseaaececececeesenssaeseecees 5 18 TABLE 5 6 RS 232 MODE SETUP FRONT 000200000 01000000000000000000000000000000000000000 5 20 TABLE 5 7 TYPICAL RS 232 CONFIGURATIONS cccccccecssssssscecececeeseuececececeesesaseceeccecsensaeceeececeesesaececececeeseaeeeseeeceesenssaeseeeens 5 21 TABLE 5 8 RS 232 SWITCHING FROM TERMINAL MODE TO COMPUTER 5 23 TABLE 5 9 RS 232 TERMINAL MODE EDITING KEYS cccccccccccsesessscecececeesenseaeceeccecsesnsaeceeccecseesaesecececeeseasaeseesesenenssaeceeeens 5 23 TABLE 5 10 RS 232 COMMAND SUMMARY ssssssssccececssssnsececececsensesecececeesesaaesecececeesaaeceeececsessaaececececseseaaeaeseesesessnseaeeeeeens 5 25 TABLE 5 10 RS 232 COMMAND SUMMARY CONTINUED iicet en tenen nennen tenes reete erinnern rennen nenne 5 26 TABLE 5 11 RS 232 C
63. LT LED blinks For certain WARNINGS a STATUS bit is set A warning indicates that something in the system may need to be checked or adjusted Failure to respond to a warning may result in poor system performance and or less accurate data acquisition When a warning is displayed MSG and CLR buttons will appear on display Pressing MSG will scroll through the warning messages if there is more than one CLR will clear the currently displayed warning message If a warning message reappears every time after CLR is pressed the problem should be corrected and the Analyzer restarted Some problems may be temporary and may not reappear after CLR is pressed for example the SYSTEM RESET message when the instrument is powered up To ignore the warning messages and display the test measurement again simply press TST gt The warning messages will remain active and may be viewed again by pressing MSG 9 1 3 Fault Diagnosis using DIAGNOSTIC Mode Diagnostic mode can be thought of as a tool kit to help troubleshoot the instrument To access DIAG mode press SETUP MORE DIAG then press NEXT PREV to select the desired mode then press ENTR The diagnostic modes are summarized in Table 9 3 9 1 3 1 Signal I O The signal I O diagnostic mode gives the user access to the digital and analog inputs and outputs on the V F board The digital outputs can be controlled through the keyboard Any signals manually changed through the signal I O menu will remain in e
64. NC Data Channel in Verbose format type D REPORT CONC RECORDS 100 VERBOSE Example 2 To report all the records from the PNUMTC Data Channel in Compact format type D REPORT PNUMTC COMPACT Automatic DAS Report Generation Automatic RS 232 reporting can be independently enabled and disabled for each Data Channel For all default data channels automatic reporting is initially set to OFF If this property is turned on the Data Channel will issue a report with a time and date stamp to the RS 232 port every time a data point is logged The report format is shown below D 31 10 06 0412 CONC AVG O3CNC1 6 8 PPB To enable RS 232 reporting for a specific Data Channel follow the procedure in Table 5 18 Table 5 18 Setup DAS Data Channel Step Action Comment Press SETUP DAS EDIT Enter DAS menu to edit Data Channels Press PREV NEXT Select Data Channel to edit Press EDIT Edit selected Data Channel 4 Press SET 5 times Scroll through setup properties until RS 232 REPORT OFF is displayed Edit selected setup property 6 ToggleOFFtoON Change RS 232 REPORT property 8 PresEXIT 4times Exits back to sample menu 5 35 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 8 Internal Variables The M400A s internal variables can be viewed and modified via the RS 232 port just as the operator modifies the variables using the SETUP mode To view a variable s val
65. OMMAND SUMMARY cssssssccccecsessssececccecsensseeecececeeseseaeeecccecseaaececececsesauececececeessaaesecececsesenssaeeeeeess 5 26 TABLE 5 12 TEST MEASUREMENTS REQUEST 8 4 2 002 2000000000 000000000000000000000000000 0 5 28 TABLE 5 13 WARNING MESSAGE CLEAR 8 1 12 242424 1 20200010000000000000000000000000000000000 5 29 TABEEO TA STATUS REPORTS 5 30 TABEE2S I5 CALIBRATION COMMANDS nase Ite 5 31 TABLE 5 16 DIAGNOSTIC COMMANDS a ar nennen nhan sess enne assesses setate gases esset tete ga nasse 5 32 TABLE S 17 DIAGNOSTIC REPORTS ette eve ete eee PR a e recede eee ydus 5 32 TABLE 5 18 SETUP DAS DATA CHANNEL tesa assess etta tesa 5 35 TABLE 6 1 AUTOCAL MODE SETUP 6 1 1 41 7 1 22 100000000 000000000000000000000000000 6 2 TABLE 6 2 AUTOCAL ATTRIBUTE SETUP PARAMETERS 2 1 7 1 100000000000000000000000000 6 3 TABLE 6 3 AUTOCAL EXAMPLE SEQUENCE SETUP 6 3 TABLE 6 4 AUTOCAL EXAMPLE SEQUENCE KEYSTROKES
66. Press CAL The M400A enters the calibrate mode from sample mode 3 Wait 10 min Wait for reading to stabilize at the zero value If you wait less than 10 minutes the final zero value may drift 4 Press ZERO The ZERO button will be displayed Press ENTR Pressing ENTR actually changes the calculation equations and zeroes the instrument 6 Input Span Gas Switch gas streams to span gas 7 Wait 10 min Wait for reading to stabilize at the span value If you wait less than 10 minutes the final span value may drift 8 Press SPAN The SPAN button should be displayed If it is not check the Troubleshooting Section 9 2 6 for instructions on how to proceed In certain circumstances at low span gas concentrations 100ppb both the ZERO and SPAN buttons will appear 9 Press ENTR Pressing ENTR actually changes the calculation equations so that the concentration displayed is the same as the expected span concentration you entered above thus spanning the instrument 10 Press EXIT Pressing EXIT returns the instrument to SAMPLE mode The Model 400A Analyzer is now ready for operation 2 8 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 2 1 Final Test and Calibration Values Test Values CD ed Units Nominal Range Value RANGE STABIL O3 MEAS O3 REF O3 GEN O3 DRIVE A PRESS SAMPLE TEMP PHOTO LAMP O3 GEN TEMP BOX TEMP DCPS SLOPE OFFSET C C C C mV N A PB Spa
67. SZI 3 AINO NMOHS x HJINJ M31N3 ONOO NVdS 0431 xS 1 2 xZ WO WoO AIL dN3l N39 0 dN3L dINVI OlOHd dal dN3l 31dWvs Sdod 138440 34015 JANG O NaS 0 434 lt 0 SVAN CO MOT 141553444 118 15 39NVM 151 gt lt 151 II4NVS SYNLONALS nN3N SIdWVS AVIdSIG TANVd LNOYS YOO 130O0N Idy Figure 5 1 Sample Menu Tree 5 2 LINdLNO 2560 54 Teledyne API Model 400A O Analyzer Instruction Manual 02260 Rev F 9 INdiNO NvHO 1531 G 2 01 N39 S WO N39 lt 0 N39 IVO v a dN3L N39 O INdINO SONY 72 dW3l 2 0 1 IWNOIS 440 Q10H 300N AWMF AXIN co Ovid 2 cogs 0935 1935 SZI dl AINO NAOHS GOW lX3N Q318VN4d 19 sl AINO NMOHS x IvaIvO lt lt N39 0 OLNnNd j3uc0 Z WOW NON Ndd Add 319NIS ING 10 9NOD 1 1 1 ma 1511 IXIN 3v0 440 NO Ten 135 300n al _ as eee 949 SHOW 0019 SSVd 35NV sya ex VOV df1L3S SYNLONYLS ANIN ANIIS AVIdSIG TSNVd 1 YOO 13QOW Setup Menu Tree 5 3 Figure 5 2 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 2 Sample Mode 5 2 1 Test Functions NOTE In any of the following TEST functions if a value of XXXX is displayed that
68. T LED on the front panel SAMPLE LED CAL LED YES YES YES YES YES YES Status Bit Power OK YES YES YES YES ES 9 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 1 3 2 Analog Output Step Test This test steps the analog output channels from 0 to 10096 of Full Scale in 20 steps To enter the analog output test press SETUP MORE DIAG Scroll using PREV NEXT until ANALOG OUTPUT appears then press ENTR It starts by outputting O volts then every five seconds the output is increased 2096 The analog outputs will cycle through the following values The display will indicate the current step 0 20 40 60 80 100 0 Pressing the key under the display will halt the stepping To resume automatic cycling press the button again 9 1 3 3 Setting the Analog Output Offset The analog outputs can be biased to offset the output voltage of each channel 10 of the output voltage setting The default offset is OmV To change it press SETUP MORE DIAG press NEXT until D A CALIBRATION is displayed and press ENTR Press CFG to enter the D A configuration menu Use the NEXT and PREV buttons to select the desired analog output and press SET Enter a value of from 500 mV to 500 mV other ranges will ratio accordingly followed by ENTR to accept the change or EXIT to leave it unchanged The offset will be reflected immediately on the analog output 9 1 3 4 Test Channel Outp
69. UST PREAMP VACUUM SAMPLE IN i PUMP 1 DETECTOR PRESS FLOW I dud Ee SENSOR OZONE SCRUBBER 5 mz O ge MEASURE REFERENCE VALVE m UV LAMP PANG POWER TEMP CONTROL Figure 4 1 Block Diagram 4 4 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 4 3 Operation Summary 4 3 1 Optical Bench Assembly The Optical Bench see Figure 8 2 is where the absorption of UV light by ozone is measured and converted into a voltage It consists of several sub assemblies l A mercury UV lamp lamp block sample exhaust assembly and heater 2 40cm long quartz absorption tube located in a temperature controlled aluminum channel A thermistor attached to the quartz tube for measuring sample temperature Quartz tube mounting block which routs sample gas into the bench assembly 4 The UV detector preamplifier The detector converts UV light to a current which is amplified and scaled by the preamp 4 3 2 Pneumatic Sensor Board The pneumatic sensor board measures the absolute pressure of the sample gas up stream and down stream of an orifice The up stream pressure is used to calculate the sample flow through the orifice based on a nominal 800 scc min flow There is a TEST function reported for 1 Sample flow reported in scc min 2 Sample pressure reported in in Hg Absolute 3 Sample vacuum reported in in Hg Absolute The M400A dis
70. able uses warning limits They are optional for variables that use warning limits and if not given the warning limits are not changed 5 36 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F After changing the variable s value the CPU will respond with V VARIABLE VALUE WARNLO WARNHI DATALO DATAHI which should reflect the new value The values in square brackets are not required for all variables If needed the values are included on the command line separated by spaces For example to change the instrument ID the host computer would issue a command like this V MACH D 21234 NE and the CPU should respond with V DDD HH MM MACHINE ID 1234 0 9999 5 37 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F INTENTIONALLY BLANK 5 38 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 6 OPTIONAL HARDWARE AND SOFTWARE 6 1 Rack Mount Option This option including slides and rack mounting ears permits the Analyzer to be mounted in a standard 19 wide x 30 deep RETMA rack 6 2 Zero Span Valve Option The Zero Span Valve option consists of two PTFE solenoid valves inside the instrument that admit sample gas or externally generated calibration gas The valves are controlled from the front panel push buttons an AutoCal sequence RS 232 commands or by remote c
71. atio of the probe is entered by SETUP RANGE DIL Accepted values are 1 to 1000 Press ENTR and EXIT to return to upper level menus A value of 1 disables the dilution feature 5 13 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 3 SELECT RANGE The range selection is the same with dilution as with normal monitoring See Section 5 3 4 for information on range selection You should note however the value entered should be the actual concentration of the un diluted calibration gas The units of this number is ppm 4 CALIBRATION When the above selections have been made the instrument now must be calibrated with the dilution system in place See Section 7 for calibration methods 5 3 5 Password Enable PASS The M400A provides password protection of the calibration and setup functions to prevent incorrect adjustments There are three levels of password protection which correspond to operator supervisor maintenance and configuration functions When prompted for a password any of the valid passwords can be entered but the CPU will limit access to the functions allowed for that password level Each level allows access to the functions of all the levels below plus some additional functions Table 5 2 lists the password levels and the functions allowed for each level To disable passwords press SETUP PASS and select OFF Table 5 2 Password Levels Password Levels Password Level Functio
72. ation parameters measured during the last span calibration Notice that there are three lines of output in the report this is because three data parameters are monitored by this data channel The name used to identify the channel is CALDAT which stands for calibration data In the first line after the colon the report indicates that the new slope SLOPEI calculated 15 0 976 In the second line the report indicates that the new offset OFSETI calculated is 0 0 mV And in the third line the report indicates that the instantaneous concentration ZSCNCI prior to calculating a new slope and offset was 409 9 ppb 5 33 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F To report the last record from the CALDAT Data Channel in VERBOSE format type D REPORT CALDAT RECORDS 1 VERBOSE D 63 11 45 0400 CALDAT INST 5 1 0 976 lt CRLF gt D 63 11 45 0400 CALDAT INST OFSET1 0 0mV lt CRLF gt D 63 11 45 0400 CALDAT INST ZSCNC1 409 9 PPB lt CRLF gt The same calibration parameter report may also appear in compact format with all the parameters on one line as shown below This format reduces the amount of output and is well suited for parsing by a host computer D 63 11 45 0400 CALDAT 1 0 976 0 0 409 9 lt CRLF gt Verbose Data Report Format There are two kinds of data reports verbose with a lot of detail and compact with just t
73. ccur Teledyne API assures its customers that prompt service and support will be available COVERAGE After the warranty period and throughout the equipment lifetime Teledyne API stands ready to provide on site or in plant service at reasonable rates similar to those of other manufacturers in the industry All maintenance and the first level of field troubleshooting is to be performed by the customer NON TELEDYNE API MANUFACTURED EQUIPMENT Equipment provided but not manufactured by Teledyne API is warranted and will be repaired to the extent and according to the current terms and conditions of the respective equipment manufacturers warranty GENERAL Teledyne API warrants each Product manufactured by Teledyne API to be free from defects in material and workmanship under normal use and service for a period of one year from the date of delivery replacement parts and repairs are warranted for 90 days after the purchase If a Product fails to conform to its specifications within the warranty period Teledyne API shall correct such defect by in Teledyne APT s discretion repairing or replacing such defective Product or refunding the purchase price of such Product The warranties set forth in this section shall be of no force or effect with respect to any Product 1 that has been altered or subjected to misuse negligence or accident or ii that has been used in any manner other than in accordance with the instruction provided by Teled
74. cesecsesenesssaeeeeeens 7 22 TABLE 7512 SPAN CALIBRATION PROCEDURE y e rot donates Oe HEN evene 7 22 TABLE 7 13 DEFINITION OF LEVEL 1 AND LEVEL 2 ZERO AND SPAN CHECKS 4 000 0 200000000000010100000000000000000000055 7 27 TABLE 7 14 DATLY ACTIVITY MATRIX ei eerie eget ear er ee OP 7 28 TABLE 7 15 ACTIVITY MATRIX FOR AUDIT 1 11 11 nnne en en tete nn nsns eset tete ess seen eite sane seen 7 29 TABLE 7 16 ACTIVITY MATRIX FOR DATA REDUCTION VALIDATION AND 7 29 TABLE 7 17 ACTIVITY MATRIX FOR CALIBRATION PROCEDURES ss cccccscessessssececececeesssueceeececsesssaesecececsensaeeeseeecsesenssaeeeeeens 7 30 TABLE 7 18 CALIBRATION OF AUTORANGE OR DUAL 2 2 1 1 7 32 TABLE 8 1 M400A MAINTENANCE SCHEDULE ccccccecesssscececececsesseaececececseaaececccecseneeaeceeececeessaaececececseseaaeceeeeeeseseneseeececeeneas 8 2 TEST EUNCTION VALUES ein rnc it RU 9 3 TABLE 9 1 TEST FUNCTION VALUES CONTINUED rennen tennis 9 4 TABEEO9 2 2WARNING MESSAGES irn repeat e ER OU Ete e arte A OPERAR AERE be GR Tose oes tes 9 6 TABEE 9 35 DIAGNOSTI
75. ctor as maximum output or the IZS described in Section 9 3 9 feedback control is adjusting the Ozone generator drive signal by more than a factor of two GEN TEMP WARNING Temperature control of the IZS Check source lamp heater and Gen Lamp cannot be maintained at thermistor as described in its 48 C set point Section 9 3 9 SAMPLE PRESSURE The Sample Pressure is less than Check for pressure transducer WARNING 15 Hg or is greater than 35 Hg problems as described in Section 9 3 10 SAMPLE FLOW WARNING The sample flow is less than 500 Check pressure sensor assembly cc min or greater than 1000 cc min using Section 9 3 10 Check pneumatic system using Section 9 3 12 SAMPLE TEMP WARNING The Sample Temperature is less than See Section 9 3 2 109C or is greater than 509C BOX TEMP WARNING The inside chassis temp is less than See Section 9 3 2 109C or is greater than 509C ORIFICE TEMP WARNING Orifice manifold temp cannot be maintained at 48 C check heater or thermistor SYSTEM RESET A power Off On cycle has occurred RAM INITIALIZED Dynamic memory has been re None required initialized in response to the installation of a new PROM or memory chip 9 6 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F When certain monitored values get outside of normal limits WARNING occurs A warning message is displayed on the front panel and a message is sent out the RS 232 port the FAU
76. ctual sample flow should be measured by connecting an independently calibrated flowmeter to the sample inlet and measuring the actual flow Below are listed some of the possible fault conditions and their solution Displayed flow This warning means that the condition for critical flow are not being maintained This condition is that the ratio of the downstream pressure to the upstream pressure must be 0 53 or higher There are two conditions which might cause this a flow obstruction upstream of the orifice or a loss of vacuum downstream of the orifice To determine which is the case scroll to the Sample Pressure and Vacuum test functions on the front panel If the sample pressure is reading abnormally low then the cause is likely a flow obstruction upstream of the orifice First check the sample filter and make sure it is not plugged and then systematically check all the other components upstream of the orifice to ensure that they are not obstructed If the sample pressure is reading normal but the vacuum pressure is reading more than half the sample pressure value it is likely that the pump diaphragm is worn and it should be replaced Actual Flow Does Not Match Displayed Flow If the actual flow measured does not match the displayed flow but is within the limits of 720 880 cc min the flow measurement can be calibrated from the front panel per Section 9 3 10 1 9 3 10 1 Flow Calibration To calibrate the flow measurement c
77. d differently The ozone loss correction factor is calculated as L 1 0 01 x loss 7 6 7 Multipoint Calibration The procedures for multipoint calibration of an analyzer by UV photometry or a transfer standard have been specified in the Federal Register To facilitate these procedures operational and calculation data forms have been developed These forms will aid in conducting calibrations and quality assurance checks A detailed description of the calibration theory and procedures for UV photometry and transfer standards is in the Federal Register and TAD Table 7 15 is a matrix for the actual dynamic calibration procedure In general ambient monitors are always calibrated in situ without disturbing their normal sampling setup except for transferring the sample inlet from the ambient sampling point to the calibration system 7 20 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 7 1 The Calibration Procedure Calibration should be performed with a primary UV photometer or by a transfer standard The user should be sure that all flow meters 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 and 760 mm Hg A discussion of the calibration of flow meters is in Section 2 1 2 Ref 11 A newly installed M400A should be operated for several hours or preferably over
78. d to Section 9 3 9 2 to finish calibration of the IZS 9 43 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F DETECTOR PCA N 0 64 0 9 amp Iv Figure 9 6 IZS Module 9 44 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 9 2 IZS Ozone Generator Calibration The IZS ozone generator can be calibrated against the analyzer calibration by using the analytical section of the M400A to determine the ozone generator s output Calibration of the generator allows the operator to enter the desired calibration concentration directly in ppb The M400A should be calibrated from an external ozone source using one of the methods described in Section 7 before doing this procedure Press SETUP MORE DIAG and scroll to O3 GEN CALIBRATION to start the calibration process which works as follows 1 The M400A will measure the IZS reference signal and the concentration at 6 different IZS lamp drive points 400 600 800 1000 2000 and 5000 mV 2 Foreach test point the machine outputs the drive setting and waits 10 minutes for the M400A to stabilize Then it takes two readings and stores them in a table for future use 3 During calibration the analyzer displays o completion so that you can monitor the progress of the calibration Full calibration will take 1 hour 6 points x 10 minutes point 4 You can abort calibration by pressi
79. deral Register Action if Requirements are not Met Return to supplier or take corrective action with generation system as appropriate Return to supplier or take corrective action with system as appropriate Repeat the calibration A system of Level 1 and Level 2 zero span checks see Table 7 13 is recommended These checks must be conducted in accordance with the specific guidance given in Subsection 9 1 of Section 2 0 9 Ref 11 Level 1 zero and span checks should be conducted at least every two weeks Level 2 checks should be conducted in between the Level 1 checks at a frequency determined by the user Span concentrations for both levels should be between 70 and 9096 of the measurement range 7 30 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 13 1 Assessment of Monitoring Data for Precision and Accuracy A periodic check is used to assess the data for precision A one point precision check must be carried out at least once every 2 weeks on each analyzer at an concentration between 0 08 and 0 10 ppm The analyzer must be operated in its normal sampling mode and the precision test gas must pass through all filters scrubbers conditioners and other components used during normal ambient sampling Those standards used for calibration or auditing may be used Estimates of single instrument accuracy for ambient air quality measurements from continuous methods are calculated accordin
80. derstanding of the factors involved in assuring continuous and reliable information from the Model 400A it is strongly recommended that the publication Quality Assurance Handbook for Air Pollution Measurement Systems abbreviated Q A Handbook Volume II be purchased from the National Technical Information Service phone 703 487 4650 or Center for Environmental Research Information or the U S Government Printing Office phone 202 783 3238 Special attention should be paid to Section 2 7 which deals with analyzers and ozone photometers and upon which most of this section is based Specific regulations regarding the use and operation of ambient O analyzers can be found in Reference 1 at the end of this Section References given in Sections 7 6 and 7 7 are listed in Section 7 8 7 6 1 M400A Calibration General Guidelines In general calibration is the process of adjusting the gain and offset of the 400 against some recognized standard The reliability and usefulness of all data derived from any analyzer depends primarily upon its state of calibration In this section the term dynamic calibration is used to express a multipoint check against known standards and involves introducing gas samples of known concentration into the instrument in order to adjust the instrument to a predetermined sensitivity and to produce a calibration relationship This relationship is derived from the instrumental response to successive samples of diff
81. described below CONC Samples ozone concentration Low Range at one minute intervals and stores an average every hour with a time and date stamp Readings during calibration and calibration hold off are not included in the data The last 800 hourly averages are stored O3REF Samples detector reference value at five minute intervals and stores an average once a day with a time and date stamp This data is useful for monitoring lamp intensity over time to predict when adjustment or replacement of the lamp will be required The last 730 daily averages about 2 years are stored PNUMTC Collects sample flow and sample pressure data at five minute intervals and stores an average once a day with a time and date stamp This data is useful for monitoring the condition of the pump and critical flow orifice sample flow and the sample filter clogging indicated by a drop in sample pressure over time to predict when maintenance will be required The last 360 daily averages about 1 year are stored O3GEN Samples ozone generator lamp drive voltage at five minute intervals and stores an average once a day with a time and date stamp This data is useful for monitoring the condition of the ozone generating lamp in the IZS option A rise in lamp drive voltage when the ozone generator is being operated in REF mode is a measure of lamp decay The last 360 daily averages are stored CALDAT Logs new slope and offset every time a zero or span calibration is pe
82. e legend above a button identifies its current function If there is no legend above a button it has no function and will be ignored if pressed 4 7 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 4 3 5 3 Keyboard The second line of the display contains eight fields Each field defines the key immediately below it By redefining the keys dynamically it is possible to simplify the instrument electronics and user interface Figure 5 1 and Figure 5 2 show all of the functions of the keyboard When entering data in the keyboard if the entered value is not accepted the M400A will beep to notify the user that the value keyed in was not accepted The original value remains unchanged 4 3 5 4 Status LED s At the right of the display there are 3 status LED s They can be in three states OFF ON and BLINKING The meanings of the LED s are given in Table 4 2 Table 4 2 Status LED s LED State Meaning Green Sample On Monitoring normally taking DAS data Off NOT monitoring DAS disabled Blinking Monitoring DAS in HOLDOFF mode 1 Yellow Cal Off Auto cal Disabled On Auto Dynamic cal Enabled Blinking Calibrating Red Fault Off No warnings exist Blinking Warnings exist 1 This occurs during Calibration DAS holdoff Power up Holdoff and when in Diagnostic mode 4 3 5 5 Power Switch The power switch has two functions The rocker switch controls overall power to t
83. e messages on the analyzer front panel Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Step 1 Enter the expected span gas concentration Set the Expected Span Gas Concentration Step Number Action Comment Press This key sequence causes the M400A to prompt for the CAL CONC expected concentration Enter the span concentration value by pressing the key under each digit until the expected value is set Press ENTR ENTR stores the expected O span value This value will be used in the internal formulas to compute subsequent concentration values Press EXIT EXIT Returns instrument to SAMPLE mode Step 2 Set the Range of the M400A Set the Range Step Number Comment Press If necessary you may want to change ranges Normally the SETUP RNGE instrument is shipped in single range mode set at 500 ppb We MODE SING ENTR recommend doing the initial checkout on the 500 ppb range 2 Press After SETUP RNGE SET enter 500 and press ENTR The SETUP RNGE SET instrument will now be in the 500 ppb range Press EXIT EXIT Returns instrument to SAMPLE mode 2 7 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Step 3 Calibrate the instrument Zero Span Calibration Procedure Step Number Action Comment 1 Input Zero gas Allow Zero gas to enter the sample port on the rear of the instrument 2
84. e rear panel The status data is generated in the CPU routed to a mezzanine board attached to the CPU where it is serialized and formatted for I2C The signals travel to the rear panel status board where they are received and decoded They are then routed to NPN transistors which can pass 50 ma of direct current See Section 5 4 for status output pin assignments Remote contact closures can be used to provide the following functions 1 If no IZS or Z S valves option is present the contact closures will switch the instrument into Zero or span calibration mode if closed If Z S valves option is present the contact closures operate the valves and switch the instrument into zero or span mode if closed If the IZS option is present the contact closures operate the valves and ozone generator zero air system plus switch the instrument into zero or span mode if closed The external circuitry should be capable of switching 12VDC at 50 ma 9 35 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 7 3 20 mA Current Output Optional A current loop option can be ordered that will provide 0 20mA or 4 20mA analog output on the REC channel The current loop channel can be independently calibrated without affecting the voltage output This calibration must be repeated every time an A D D A calibration is performed To calibrate the current output perform the following steps 1 Perform an A D D A calibration a
85. ederal Regulations Part 50 Appendix D 40 CFR Part 50 2 transfer standard is a transportable device or apparatus which together with associated operational procedures is capable of accurately reproducing concentration standards or producing accurate assays of concentrations which are quantitatively related to a primary O standard A Standard Reference Photometer SRP has been developed as a primary standard by the U S National Institute of Standards and Technology NIST and the EPA It is a highly stable highly precise computer controlled instrument for assaying concentrations NIST maintains one or more master SRP s in lieu of an SRM for ozone A nationwide network of regionally located SRPs enables State and local air monitoring agencies to compare their standards with authoritative standards maintained and operated under closely controlled conditions Other SRPs are located in foreign countries 7 16 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Currently the U S SRP Network consists of SRP s located at 1 EPA s National Exposure Research Laboratory NERL in Research Triangle Park North Carolina EPA s Region I Environmental Services Division in Lexington Massachusetts EPA s Region II Environmental Services Division in Edison New Jersey EPA s Region IV Environmental Services Division in Athens Georgia EPA s Region V Environmental Science D
86. en or incorrect LOG OFF SUCCESSFUL Logged off The RS 232 LOGON feature must be enabled from the front panel by setting bit 4 See Table 5 6 Once the feature is enabled to logon type LOGON 940331 or LOGON 0400 940331 if instrument ID is used 940331 is the default password The password can be changed to any number from 0 to 999999 by the variable RS232 PASS To change the password enter the command V RS232 PASS NNNNNN which sets the password to the value NNNNNN Protocol of Port Communication The RS 232 interface has two protocols of communication because if the port is attached to a computer it needs to have different characteristics than if used interactively Consequently there are two primary styles of operation terminal mode and computer mode When an operator is communicating with the analyzer via a terminal the analyzer should be placed into TERMINAL MODE which echoes keystrokes allows editing of the command line using the backspace and escape keys and allows recall of the previous command When a host computer or data logger is connected to the analyzer it should be placed into COMPUTER MODE which does not echo characters received or allow the special editing keys See Table 5 8 and Table 5 9 for relevant commands 5 22 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F Table 5 8 RS 232 Switching from Terminal Mode to Computer Mode Key Function Control T ASCII 20 decimal Switch to
87. ent that the tube be pushed all the way towards the front of the optical bench when it is re assembled When tightening the knurled nuts tighten the nut with one hand and with the other hand pull the tube gently towards the front of the optical bench as the nut is tightened This will ensure that the tube is assembled with the forward end against the stop inside the detector manifold Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F F T Cu 1 SH i qd Ug 29 E B d WC 09 22 Figure 8 2 Optical Bench Assembly 8 7 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Figure 8 3 Pneumatic Diagram Standard Configuration 8 8 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F Figure 8 4 Pneumatic Diagram Zero Span Valves amp IZS Option 8 9 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 8 6 Leak Check Procedure There are two methods of leak checking By vacuum This is the simplest method but it does not show the location of a leak If you want to confirm that you do not have a leak use vacuum By pressure By using bubble solution this method shows a leak location If you know you have a leak use pressure CAUTION Do not use bubble solution with vacuum The solution may contaminate the instrument Do not exceed 15 PSI pressure 8 6 1 Aut
88. eplace every 6 months Replace every 12 months Replace every 12 months Replace every 2 years Inspect annually Clean as necessary Check annually Check after maintenance Replace every two years Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 8 2 Replacing the Sample Particulate Filter Procedure Refer to Figure 8 1 The particulate filter should be inspected often for signs of plugging or contamination It is also common for dirt particles to absorb thus causing those readings to be low Any contamination on particulate filter or its holder can affect the output of the analyzer for 15 min to an hour This contamination can be as little as fingerprints on the filter element or on the wetted surfaces of the housing We recommend that when you change the filter handle it and the wetted surfaces of the filter housing as little as possible Try not to touch any part of the housing filter element teflon retaining ring glass cover and the Viton o ring The analyzer might show a slight decrease in span concentration after changing the filter If this is the case allow the unit to run until the concentration comes up to the expected span value this usually takes 15 min to 1 hour To check and change the filter 1 Fold down the M400A front panel 2 Locate the filter on the left side of the analyzer front panel See Figure 8 1 for an exploded view of the filter assembly Visual
89. er a problem is the result of the UV Lamp or the Lamp Power Supply However the following steps will provide a reasonable confidence test of the Lamp Power Supply WARNING Hazardous voltages present use CAUTION 9 30 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 1 Unplug the cable connector at J1 on the Lamp Power Supply and confirm that 24VDC is present between Pins 1 and 2 on the cable connector If this voltage is incorrect check the Power Supply Module as described in Section 9 3 8 2 Remove the cover of the Lamp Power Supply and check for the presence of the following voltage 24VDC between TP1 and TP14 3 Ifthis voltage is incorrect the Lamp Power Supply is faulty and should be replaced If the above checks are successful it is more likely that a problem is due to the UV Lamp than due to the Lamp Power Supply Replace the Lamp and if the problem persists replace the Lamp Power Supply Adjustment Required or Adjustment Useful Adjust the Lamp and Detector Preamp as described in Section 9 3 5 If it is not possible to achieve an acceptable REF test Value by means of adjustment it is possible that the lamp has deteriorated beyond its useful range and should be replaced WARNING UV light present Do not look directly at the UV lamp since UV light could cause eye damage Always use UV filtering glasses or view through glass Lamp or Detector Failure
90. erent known concentrations As a minimum three reference points and a zero point are recommended to define this relationship The true values of the calibration gas must be traceable to an ozone primary standard monitoring instrument systems are subject to some drift and variation in internal parameters and cannot be expected to maintain accurate calibration over long periods of time Therefore it is necessary to dynamically check the calibration relationship on a predetermined schedule Zero and span checks must be used to document that the data remains within control limits These checks are also used in data reduction and validation To ensure accurate measurements of the levels the Model 400A must be calibrated at the time of installation and re calibrated as necessary Section 2 7 2 of the Q A Manual n 7 13 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Care must be exercised to ensure that the calibration system meets the guidelines outlined in the revised Appendix D 40 CFR 50 Detailed calibration procedures are also discussed in the Technical Assistance Document TAD Dynamic multipoint calibration of the M400A must be conducted by using either the UV photometric calibration procedure or a certified transfer standard The equipment i e calibrator and UV photometer that is needed to carry out the calibration is commercially available or it can be assembled by the user Calibrations s
91. escribed in Section 7 6 6 If during a regular field audit the differences recorded for most analyzers are either negatively or positively biased a check of the calibrator used in routine calibrations of the analyzers may be advisable 7 23 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F The test atmosphere must pass through all filters scrubbers conditioners and other components used during normal ambient sampling and through as much of the ambient air inlet system as practical Be sure the manifold includes a vent to assure that the M400A inlet is at atmospheric pressure Audit Procedure 1 Turn on the zero air flow in the audit device 2 After stabilization record the analyzer zero 3 Generate an up scale audit point 4 After stabilization record the analyzer response 5 Assay the audit concentration using an audit UV photometer or certified transfer standard 6 Repeat steps 4 and 5 for the two remaining up scale audit points If analyzer is operated on 0 1 0 ppm range four up scale audit points must be used Results Results of the audit will be used to estimate the accuracy of the ambient air quality data Calculation of accuracy is described in Section 2 0 8 of the Manual 7 6 9 2 Data Processing Audit Data processing audit involves reading a strip chart record calculating an average and transcribing or recording the results on the SAROAD form The data processing audi
92. etc Level 2 zero and span checks are not to be used as a basis for analyzer zero or span adjustments calibration updates or adjustment of ambient data They are intended as quick convenient checks to be used between zero and span calibrations to check for possible analyzer malfunction or calibration drift Whenever a Level 2 zero or span check indicates a possible calibration problem a Level 1 zero and span or multipoint calibration should be carried out before any corrective action is taken If a Level 2 zero and span check is to be used in the quality control program a reference response for the check should be obtained immediately following a zero and span or multipoint calibration while the analyzer s calibration is accurately known Subsequent Level 2 check responses should then be compared to the most recent reference response to determine if a change in response has occurred For automatic Level 2 zero and span checks the first scheduled check following the calibration should be used for the reference response It should be kept in mind that any Level 2 check that involves only part of the analyzer s system cannot provide information about the portions of the system not checked and therefore cannot be used as a verification of the overall analyzer calibration 7 27 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 14 Daily Activity Matrix Characteristic Shelter Te
93. ffect until you leave the signal I O menu At that time the analyzer will regain control of these signals To enter the signal I O test mode press SETUP MORE DIAG ENTR When the diagnostic mode is entered a message is sent to the RS 232 channel indicating entry into the diagnostic mode Use the PREV and NEXT buttons to scroll through the signals Edit buttons will appear for the signals that can be controlled by the user Press JUMP to skip to a specific I O Signal Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F e e D 5 E o 5 D Signal Control SPAN VALVE YES Switches the Zero Span valve Use this bit to test the valve function Description CAL VALVE YES Switches the Sample Cal valve Use this bit to test the valve function HOTO REF VALVE YES Switches the photometer ref meas valve Use this bit to test the valve function PHOTO LAMP HTR YES Shows the status of the photometer lamp heater This has the same function as the LED in the power supply module O3 GEN HTR YES Shows the status of the ozone generator heater This has the same function as the LED in the power supply module gt N LAMP_POWER YES Controls input power to the lamp power supply ORIFICE_TEMP NO Orifice manifold temperature in mV _ _ O Generator temp Typically 2270mV for 48C table continued 4500mV NO
94. g requirements of the protocol very carefully Problems arise when trying to specify connectors and wiring diagrams that attach the analyzer to various devices See Figure 9 2 for pin out 9 3 3 2 RS 232 Connections Connectors The problem centers around two areas First is the physical incompatibility of connectors Second is the wiring of the connectors We will attempt to provide some guidelines for connecting the Teledyne API analyzers to other equipment There are a wide variety of connectors and cables that are specified to operate with the RS 232 protocol This is because electronics have decreased in size over the years and connectors have been downsized to match the electronics Cables amp Adapters come in the following 4 general types 1 Cables cables are provided in various lengths from 6 to 50 feet In most cases they have a male connector at one end and a female at the other Variations on this are ones that provide both a cable and adapter For example the cable provided with our analyzer adapts a female DB 9 to a male DB 25 connector Most cables do not contain a Null modem 2 Gender changers convert a male connector to a female connector or vice versa They do so WITHOUT changing the pin to pin wiring 3 Adapters these change from one type plug DB 9 to another type plug DB 25 They do so WITHOUT changing the wiring 4 Null modems here the connector changes the internal wiring so that DTE devices can beco
95. g the adjustment procedure in Section 9 2 Confirm the Sample Temperature Sample Pressure and Sample Flow readings are correct Check and adjust as required 9 2 7 Inability to Zero l 2 3i Check for leaks in the pneumatic system as described in Section 9 3 12 Confirm that the zero gas is free of ozone Place a charcoal scrubber in sample inlet line Check for a dirty particulate filter and replace as necessary as described in Section 8 2 9 2 8 Analog Output Doesn t Agree with Display Concentration 1 2 Confirm that the DAC offset is set to zero See Section 9 1 3 3 Perform a DAC calibration and Dark Signal adjustment by following the procedures described in Sections 9 2 and 9 3 5 Perform analog output step test by pressing SETUP MORE DIAG then scroll to the analog output step test 9 18 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 Subsystem Troubleshooting and Adjustments 9 3 1 Computer Display Keyboard When the analyzer is turned on the front panel display should energize and the green Sample LED should light If proper DC power is present see Section 9 3 8 the absence of these will usually indicate either a CPU or Display failure To determine which module is defective perform the following procedure 9 3 1 1 Front Panel Keyboard During normal Analyzer operation depressing the right most key of the keyboard should cause a change of display modes If it does n
96. g to the procedure in Section 2 0 8 Ref 11 The audit procedure is described in Section 7 6 8 7 6 14 Recommended Standards for Establishing Traceability Ozone is the only criteria pollutant for which standard concentrations for calibration cannot be directly traceable to an NIST SRM National Institute of Standards Standard Reference Material 7 6 14 1 Ozone Working Standard Traced to NIST Ozone Standard To maintain a uniform and consistent set of references the USEPA maintains 9 Standard Reference Photometers SRP around the US It is suggested that the regional office of the EPA be contacted for the location of a SRP nearby and that the standards be intercompared This assures a uniform standard for ozone concentration is applied everywhere 7 6 14 2 Other Methods of Establishing Traceability To provide a reference against which calibration standards for must be compared the U S EPA has prescribed a reference calibration procedure based on the principle of UV light absorption by ozone at a wavelength of 254 nm This procedure provides an authoritative standard for all O3 measurement Ozone transfer standards may also be used for calibration if they have been certified against the UV calibration procedure 7 31 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 7 7 Calibration of Independent Ranges or Autoranging 7 7 1 Zero Span Calibration on Autorange or Dual Ranges If the analyzer is being
97. gned to accommodate both printers and host computers Tips on connecting the RS 232 port can be found in the Section 9 3 3 All message outputs from the Model 400A have the following format X DDD HH MM MESSAGE lt CRLE gt The X is a character indicating the message type shown in Table 5 5 5 17 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 5 5 RS 232 Message Types First Character Message Type 2 The DDD HH MM is time stamp indicating the day of year DDD as a number from to 366 the hour of the day HH as a number from 00 to 23 and the minute MM as a number from 00 to 59 The is 4 digit Analyzer I D number The MESSAGE field contains variable information such as warning messages test measurements DAS reports etc The lt CRLF gt is a carriage return line feed combination which terminates the message and also makes the messages appear neatly on a printer All RS 232 messages from the analyzer are terminated in this manner The uniform nature of the output messages makes it easy for a host computer to parse them Input messages to the Model 400A have a format which is similar to that for output messages X command lt CRLF gt The X indicates the message type as shown above in Table 5 5 and command is the command type each of which is described individually below The lt CRLF gt is used to ter
98. he sample line between the valve and the optical bench from the valve s common port and reconnect it directly to the output port of the Ozone Scrubber Repeat Steps through 4 above If the decrease in the REF value is now within tolerance then the main switching valve is defective and should be replaced or rebuilt If an out of tolerance decrease in the REF value persists the Ozone scrubber should be replaced 9 3 7 Rear Panel Status Analog Output PCA The Rear Panel Status Analog Output PCA is a multifunction board The functions are 1 2 3 4 Provide 3 channels of analog voltage current loop output Provide instrument status bits through the 50 pin connector Provide contact closure inputs to control calibration Provide RS 232 communications The sections below provide an operational test for each one of these functions 9 34 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 7 1 Analog Outputs There are 4 analog output channels Channel assignments are 0 l 2 3 Ozone output O31 Output O32 Ozone Generator Drive TEST Output TCH In the DIAGNOSTIC menu there is an Analog Output Step Test which writes stepped voltages to the DAC s This test will verify the correct operation of the analog outputs refer to Section 9 1 3 9 3 7 2 Status Output Lines External Contact Closures The status output function reports Analyzer conditions to a 50 pin connector on th
99. he data point values The verbose format looks like the following D 31 10 06 0412 CONC AVG O3CNC1 6 8 PPB This report uses the format of a leading first character D in this example a time stamp 31 10 06 and the instrument ID 0412 The other fields in the report are the data collector name CONC the sampling mode AVG the data point O3CNC1 the data point value 6 8 and the units PPB Due to the length of the message only one data point may be printed per line Compact Data Report Format The compact format looks like the following D 31 10 06 0412 CONC 1 6 8 The fields up to the colon are the same as for the verbose format but the next fields are different The fields following the colon are the line number 417 in the example and the data point value 6 8 Presumably the user or remote computer knows all of the other information about the data point value This report format is particularly useful when you are sampling more than one data point because up to five data points may be printed per line The line number field is necessary because a single report may span multiple lines A compact report with two data points such as the PNUMTC Data Channel looks like this D 31 10 06 0412 PNUMTC 1 800 0 29 7 5 34 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Example 1 To report the last 100 records from the CO
100. he frequency of replacement Section 10 contains a list of spare parts and kits of expendables Based on these requirements the management of the monitoring network can determine which parts and the quantity of each that should be available at all times 7 15 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 3 Calibration Gas and Zero Air Sources Production of Zero Air Devices that condition ambient air by drying and removal of pollutants are available on the commercial market such as the Teledyne API Model 701 Zero Air Module We recommend this type of device for generating zero air Detailed procedures for generating zero air are TAD Production of Span Gas Because of the instability of the certification of concentrations as Standard Reference Materials SRMs is impractical if not impossible Thus when concentration standards are required they must be generated and certified locally Ozone concentration standards may also be required at the monitoring site to check the span and precision of ambient monitors between calibrations Ozone standards can be classified into two basic groups primary standards and transfer standards 1 A primary standard is an concentration standard that has been dynamically generated and assayed by UV photometry in accordance with the procedures prescribed by the U S Environmental Protection Agency EPA under Title 40 of the Code of F
101. he instrument in addition it includes a circuit breaker If attempts to power up the M400A result in a circuit breaker trip the switch automatically returns to the off position and the instrument will not power up 4 8 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F WO FIINVS fa 1300N S3ZAlVNV 7 OlYLAWOLOHd INI NOHVLNINNALSNI MOUNT 109 IONMAOV WoO ZWNO 151 151 gt L IIaNVS IVO lt HddOO0S jon n iuaoseupunpuniueug voOZ POW idv SUL 180 27760 voo3 GOHLIN LNSWAINDS H 7 NOLLVS IN3JONOO 3NOZO Q 1313 10 554 SNOLLINIJ3C 913134 3GON Figure 4 2 Front Panel 4 9 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 4 3 6 Power Supply Module The Power supply module supplies AC and DC power to the rest of the instrument It consists of a 4 output linear DC power supply and a 24 volt switching supply In addition it contains the switching circuitry to drive the DC operated valves and several switched AC loads to operate the Bench IZS and UV lamp heaters 4 3 7 Pump Valves Pneumatic System The M400A is equipped with a vacuum pump capable of pulling 800 cc min across a critical flow orifice This allows a smooth stable flow of sample through the Analyzer An internal pump c
102. hen little current is required from the supply Switch Board The Switch Board has many different functions It takes logic signals from the V F board and uses them to switch 4 115 VAC and 4 12VDC loads The board also contains the instrument central grounding tie point It routes unswitched AC and DC power as needed Connector J2 programs the power transformers to take 115 220 230 and 240 VAC inputs Power Transformers There are potentially 2 input power transformers in the instrument The multitap transformer T1 is in every M400A and supplies input power for the Linear Power Supply board described above A second transformer T2 is added if 220 or 240 VAC input is required Input power selection is done via a programming connector P2 which provides the proper connections for either foreign or domestic power Circuit Breaker Power The front panel contains a combination circuit breaker input power Switch switch It is connected to the PSM through J6 on the Switch Board If an overload is detected the switch goes to the OFF position Switching the power back on resets the breaker also 9 38 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F FT SN no h 1 td 20 21501 QuvOB gt HOLIMS HU HOLMS ugWoJSNvS 20 dawod a Li DEN od 7 L Q3HOLIMS 1 5 Me ENT ii 431002
103. hould be carried out at the field monitoring site The Analyzer should be in operation for at least several hours preferably overnight before calibration so that it is fully warmed up and its operation has stabilized During the calibration the M400A should be in the CAL mode and therefore sample the test atmosphere through all components used during normal ambient sampling and through as much of the ambient air inlet system as is practicable If the instrument will be used on more than one range it should be calibrated separately on each applicable range See Section 7 7 Calibration documentation should be maintained with each analyzer and also in a central backup file Personnel equipment and reference materials used in conducting audits must be independent from those normally used in calibrations and operations Ozone audit devices must be referenced to a primary UV photometer or one of the Standard Reference Photometers maintained by NIST and the USEPA Table 7 9 Activity Matrix for Procurement of Equipment and Supplies Equipment Acceptance Limits Frequency and Method Action if Requirements Supplies of Measurement are not Met Model 400A Performance according to Manufacturer strip chart Have the manufacturer specifications in recording of analyzer s adjust and rerun the Table 4 1 Sec 2 0 4 performance or performance checks Ref 11 equipment documentation Strip chart Compatible with output Visually observe upon Return to supp
104. including ID numbers would be executed only if the instrument s ID number was set to 100 5 24 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 2 Command Summary Table 5 10 contains a summary of the RS 232 port commands Table 5 10 RS 232 Command Summary Commands Definition id Print help screen ID is an optional instrument ID number T id LIST Print all active test messages T id LIST name or Print single test message name from Table 5 13 T id name W id LIST Print all active warnings W id CLEAR name or Clear single warning message name from Table 5 14 W id name W id CLEAR ALL Clears all warning messages C id LOWSPAN 112 Start remote low span calibration C id ASEQ number Start remote calibration sequence number 1 3 C id COMPUTE ZERO Calculates a new slope and offset during zero calibration Must be in zero calibration first C id COMPUTE SPAN Calculates a new slope and offset during span calibration Must be in span calibration first D id RESET RAM System reset plus erases RAM Initializes DAS conc readings calib not affected table continued 5 25 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F Table 5 10 RS 232 Command Summary Continued Commands Definition D id RESET EEPROM System reset plus erases EEPROM RESET RAM actions setup variables calibration to default values Resto
105. ing span calibration Must be in span calibration first This parameter selects the range to calibrate Nothing or a value of 1 selects the low range a value of 2 selects the high range Calibration commands are shown on Table 5 15 When a calibration command is issued the CPU will respond by issuing a status report For example if the host computer issues the command C SPAN to do a zero check the CPU will send the status report C DDD HH MM START SPAN CALIBRATION to the RS 232 output 5 31 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 6 DIAGNOSTIC Commands and Messages The diagnostic Signal I O mode and Ozone Generator Calibration IZS option can be entered from the RS 232 port as well as from the front panel The diagnostics commands available are listed in Table 5 16 Table 5 16 Diagnostic Commands D name value Examines or sets I O signal See Table 9 3 for a list of signals Must issue D ENTER SIG before using this command D RESET Reset analyzer same as power on D RESET RAM Resets analyzer and erases RAM Erases all DAS data Keeps setup variables and calibration D RESET EEPROM Resets analyzer and erases RAM and EEPROM Erases all DAS data Resets all setup variables to factory default Resets calibration values These commands may be used whether the diagnostics have been entered from the keyboard SETUP DIAG or the RS 232 D
106. ion values being sent to a D A converter to produce the instrument analog output The computer memory is divided into 3 sections ROM memory contains the multi tasking operating system code plus the instructions that run the instrument The RAM memory is used to hold temporary variables and current concentration data The EEPROM memory contains the instrument set up variables such as range and instrument ID number The EEPROM data is non volatile so the instrument can lose power and the current set up information is preserved 4 3 4 V F Board Computer communication is done via 2 major hardware assemblies These are the V F board and the front panel display keyboard The V F board is multi functional consisting of A D input channels digital I O channels and analog output channels Communication with the computer is via a STD bus interface The computer receives all of the instrument data and provides all control functions through the V F board 4 3 5 Front Panel The front panel of the M400A is shown in Figure 4 2 The front panel consists of a 2 line display keyboard 3 status LED s and power switch Communication with the display keyboard and status LED s is done via the computer s on board parallel port All major operations can be controlled from the front panel display and keyboard Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 4 3 5 1 Display The top line of the display is divided into 3 fields
107. ir After corrective action recalibrate analyzer Calculate report precision Sec 2 0 8 Ref 11 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 15 Activity Matrix for Audit Procedure Audit Multipoint calibration audit Data processing audit Systems audit Acceptance Limits The difference between the measured and the audit values as a measure of accuracy Sec 2 0 8 of Ref 11 Adhere to stepwise procedure for data reduction Sec 8 4 no difference exceeding 0 02 ppm Method described in this section of the Handbook Frequency and Method of Measurement At least once a quarter Sec 2 0 8 of Ref 11 Perform independent check on a sample of recorded data e g 1 day out of every 2 weeks of data 2 hours for each day At the startup of a new monitoring system and periodically as appropriate observation and checklist Action if Requirements are not Met Re calibrate the analyzer Check all remaining data 1f one or more audit checks exceeds 0 02 ppm Initiate improved methods and or training programs Table 7 16 Activity Matrix for Data Reduction Validation and Reporting Activity Acceptance Limits Frequency and Method of Measurement Action if Requirements are not Met Data reduction Stepwise procedure Follow the method for Review the reduction Sec 2 7 4 Ref 11 each strip chart procedure Span drift check
108. is enabled there are 2 slope terms one for each range O Offset Value The offset term is the b coefficient of the straight line equation y mx b The value of the offset term sets the zero point of the M400A Test Value Many of the internal voltages measured by the M400A can be routed to this analog output channel for test purposes See Trouble shooting Section 9 for details on using this function Time This is the output of the M400A s internal time of day clock 5 2 2 CAL CALS CALZ Calibration Functions 5 2 2 1 CAL CALS CALZ The CAL button switches the M400A into calibration mode CAL mode allows the instrument to be calibrated with zero or span gas coming in through the sample port When in calibration mode the expected span gas concentration can be entered See Section 7 for details on instrument calibration The CALS and CALZ buttons control the operation of the IZS option or Zero Span Valves option CALS switches the IZS valve to admit span gas into the Optical Bench Span checks or span calibrations can be done in CALS mode CALZ switches the IZS valve to admit zero gas into the Optical Bench Zero checks or zero calibration can be done in CALZ mode NOTE When operating the M400A with the IZS option the CALZ and CALS operations should be used only to perform zero and span checks and should not be used to calibrate the instrument Teledyne Model 400A Analyzer Instruction Manua
109. ivision in Chicago Illinois EPA s Region VI Environmental Services Division in Houston Texas EPA s Region VII Environmental Services Division in Athens Georgia EPA s Region VIII Environmental Services Division in Denver Colorado O AR OD o The State of California Air Resources Board CARB in Sacramento California Commercial UV photmeters meeting the requirements of a primary ozone standard as set forth in 40 CFR Part 50 are available and are currently being used by air monitoring agencies Agencies have been encouraged to intercompare their primary standards and transfer standards as part of their routine quality assurance QA programs 7 6 4 Data Recording Device Either a strip chart recorder data acquisition system digital data acquisition system should be used to record the data from the M400A RS 232 port or analog outputs If analog readings are being used the response of that system should be checked against a NIST referenced voltage source or meter Data recording device should be capable of bi polar operation so that negative readings can be recorded Strip chart recorder should be at least 6 15 cm wide 7 6 5 Record Keeping Record keeping is a critical part of all quality assurance programs Standard forms similar to those that appear in this manual should be developed for individual programs Three things to consider in the development of record forms are 1 Does the form serve a necessary func
110. l 02260 Rev F 5 2 2 2 Zero Pressing the ZERO key along with ENTR will cause the instrument to adjust the OFFSET value of the calibration equation The M400A will only allow zero adjustment over a limited range of signal levels therefore the signal does not have to be exactly zero for the instrument to do a zero cal The instrument will not however allow a zero cal on any signal level therefore it is not possible to zero the instrument with span gas in the optical bench If the ZERO key does not come on as expected check Section 9 2 7 5 2 2 3 Span Pressing the SPAN key along with ENTR will cause the instrument to adjust the SLOPE value of the calibration equation The concentration value will be adjusted to the value entered for the expected span concentration Like ZERO calibration the instrument will not allow span on any ozone concentration If the SPAN key is not illuminated as expected see Section 9 2 6 It is also possible that at low levels of ozone that BOTH the ZERO and SPAN keys will be illuminated If this condition occurs use extra caution so the correct operation is done so the M400A does not become mis calibrated 5 2 2 4 Ozone Calibration Concentration Before the M400A can be span calibrated the expected ozone span concentration must be entered This is done by entering CAL CONC SPAN then keying in the expected span value Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 5 3 Set Up M
111. lamp adjustment can be achieved within 44 revolution of the lamp Note also that the REF display is updated approximately once every six seconds and slow rotation of the lamp is needed for proper adjustment 4 Adjust the UV Detector Pre Amp gain as follows A Remove access cap on the Detector cover at the front end of the optical bench and adjust the pot R7 until the REF reading on the display is 4500mV x 50mV WARNING UV light present Do not remove lamp from housing when adjusting B If it is still not possible to achieve a 4500 mV REF reading increase the UV lamp drive power by adjusting the lamp power supply as described in Step 1 DO NOT however allow the voltage measured across the TP7 and TP14 to exceed 21 volts 5 Re calibrate the automatic Detector Dark Current compensation by pressing SETUP MORE O3 DARK CAL See Section 9 3 5 3 for dark current adjustment procedure 9 3 5 2 Detector Pre Amp O REF test value of less than 75mV usually indicates a failure of the Detector Pre Amp Confirm that the V F is operating properly as described in Section 9 3 4 If the V F check is successful the Detector pre amp has failed and should be replaced 9 32 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 5 3 Dark Current Signal Adjust Procedure The detector dark current changes little as the detector ages Therefore this procedure should not need to be perfor
112. lier recorder signal of analyzer receipt recommended chart width of 15cm 6 inches Sampling lines Constructed of Teflon As above As above and manifold quartz glass fittings may be S S Calibration Meets the guidelines of Check upon receipt As above system Section 2 7 9 Ref 11 and TAD 2 or TAD 3 7 14 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 2 Calibration Equipment Supplies and Expendables The measurement of O in ambient air requires a certain amount of basic sampling equipment and supplemental supplies These include but are not limited to the following Equivalent Method UV Photometric analyzer such as the Teledyne API Model 400A Strip chart recorder and or data logging system Sampling lines Sampling manifold UV ultraviolet photometric calibration system Certified calibration transfer standards Zero air source Ozone generation device calibrator Mer 296 120 ND ror USES ems Spare parts and expendable supplies 10 Record forms 11 Independent audit system When purchasing these materials a log book should be maintained as a reference for future procurement needs and as a basis for future fiscal planning Spare Parts and Expendable Supplies In addition to the basic equipment discussed above it is necessary to maintain an inventory of spare parts and expendable supplies Section 8 describes the parts that require periodic replacement and t
113. lity the checks should still be carried out monthly as the possibility of malfunction is always present A well designed properly built photometer is a precision instrument and once it is operating adequately it is likely to continue to do so for some time particularly if the photometer is stationary and is used intermittently under ideal laboratory conditions If the photometer is commercially manufactured it should include an operation instruction manual Study the manual thoroughly and follow its recommendations carefully and completely 7 6 6 1 Linearity test Because the required photometric measurement is a ratio a simple linearity check of the photometer is a good indication of accuracy Linearity of commercially made photometers may be demonstrated by the manufacturer The linearity test is conducted by first generating and assaying an ozone concentration near the upper range limit i e 0 1 0 5 or 1 0 ppm of the system Then dilute the concentration using a configuration similar to that shown in Figure 7 1 Add a flow of zero air Fa to the flow of original generated concentration Fo and pass the mixture through a mixing chamber to ensure a homogeneous concentration at the output manifold For this test the flow rates F and Fy must be accurately measured within 2 of the true value To help ensure accurate flow measurements the two flowmeters should be of the same general type and one should be standardized against the other The
114. loop 1 part in 1024 of selected full scale voltage 12 Status outputs from opto isolators at constant temperature and voltage 3 1 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 3 2 EPA Equivalency Designation Teledyne Advanced Pollution Instrumentation Devision Model 400A Ozone Analyzer is designated as Reference Method Number EQOA 0992 087 as defined in 40 CFR Part 53 when operated under the following conditions 1 Range Any range from 100 parts per billion ppb to 1 ppm 2 Ambient temperature range of 5 to 40 C 3 Line voltage range of 105 125 VAC 60 Hz 220 240 VAC 50 Hz 4 With 5 micron TFE filter element installed in the internal filter assembly 5 Sample flow of 800 80 cc min 6 Internal or External sample pump 7 Software settings A Dilution factor 1 0 B AutoCal ON or OFF C Dual range ON or OFF D Autorange ON or OFF E Temp Pres compensation ON Under the designation the Analyzer may be operated with or without the following options Rack mount with slides Rack mount without slides ears only Rack mount for external pump w o tray Sample Cal valve Internal zero span 4 20mA isolated output Ii ON I dee c db Internal pump or external pump Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 3 3 Warranty WARRANTY POLICY 02024c Prior to shipment Teledyne API equipment is thoroughly inspected and tested Should equipment failure o
115. ly inspect the filter through the glass window 4 Ifthe filter appears dirty unscrew the hold down ring remove the teflon o ring and then the filter 5 Replace the filter being careful that the element is fully seated in the bottom of the holder 6 Replace the teflon o ring with the notches up then screw on the hold down ring and hand tighten Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 8 3 Cleaning Exterior Surfaces of the M400A If necessary the exterior surfaces of the M400A can be cleaned with a clean damp cloth Do not submerge any part of the instrument in water or cleaning solution CAUTION Risk of electrical shock Disconnect power before performing the following operations NOTE The operations outlined in this chapter are to be performed by qualified maintenance personnel only 8 4 Replacing the IZS Zero Air Scrubber Procedure 1 Turn off the analyzer 2 Fold down the Instrument rear panel 3 Remove the old scrubber by disconnecting the 9 16 fitting at the top of the gen tower then removing the DFU filter and scrubber 4 Replace the DFU filter if necessary see Table 8 1 Maintenance Schedule 5 Unscrew the top of the scrubber canister and replace the activated charcoal 6 Tighten the cap on the scrubber HAND TIGHTEN ONLY 7 Replace the scrubber in its clip on the rear panel 8 Re connect the 9 16 fitting to the top of the
116. ly varying signals 2 Examining the Ozone Formula Slope and Offset The slope and offset parameters can be examined by pressing the lt TST or TST gt buttons until the slope and offset TEST functions appear The slope and offset parameters are set only during zero and span calibration routines These parameters are used to adjust the span and zero values to the expected values entered in the CAL menu If the instrument s range mode is set to Dual or Auto then a second set of slope and offset parameters is used for computing the concentration for the high range The current value of the ozone reading that is displayed on the front panel and output on the D A terminals on the back panel is computed as follows Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 1 2 The Model 400A Analyzer switches into reference mode The Analyzer waits 2 seconds to purge the sample tube The instrument measures the intensity of light striking the detector during the next 1 067 sec This reading forms the reference intensity I in the ozone concentration equation The analyzer now switches to the sample mode and waits 2 seconds as in step 2 above The instrument measures the intensity of light striking the detector during the next 1 067 sec This reading forms the sample concentration intensity I in the ozone concentration equation The concentration of ozone is computed using the Beer Lambent equation corrected for tempe
117. me DCE or vice versa The main internal change is swapping pin 2 and 3 so that data is transmitted and received on opposite pins CAUTION Null modems can also combine gender changer or adapter features in the design When making up an adapter cable be EXTREMELY CAREFUL to note what you are using especially with combination null modem adapter connectors 9 24 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F DTE DCE Wiring As technology has progressed it has become ambiguous which equipment should be DCE or DTE The M400A has a switch that allows you to switch between DTE and DCE Once your equipment is plugged in and turned on correct wiring can be confirmed if BOTH red and green LED s are illuminated on the instrument rear panel If only one LED is on switch the DTE DCE switch 9 3 3 3 Connecting the Analyzer to a Modem Modem s are configured as Data Communications Equipment DCE All that is needed is a straight through adapter to connect from the analyzer to the modem Make sure that none of the adapters contain a null modem In addition to DTE DCE wiring modems have pins that need to be at certain logic levels before the modem will transmit data The most common requirement is the Ready to Send RTS signal must be at logic high before the modem will transmit The M400A sets pin 7 RTS to 10 volts to enable modem transmission DSR and CTS are at ground Make sure the
118. med more than once per year or whenever a major sub assembly is changed such as a new UV lamp or UV lamp power supply or gain pot on the preamp board is adjusted To calibrate the dark current signal press SETUP MORE O3 DARK CAL and the analyzer will do the following 1 Turn the analyzer lamp off 2 Average 6 successive detector readings taken 1 second apart 3 Turn the analyzer lamp back on This offset will then be stored and subtracted from all future detector readings To view the current dark offset press SETUP MORE O3 DARK EDIT Press EXIT when finished No password is required to view the dark offset only to change it CAUTION Do not change the DARK value once it has been calibrated Doing so will give erroneous readings 9 3 5 4 Source Lamp Temp The UV lamp on the Optical Bench is temperature controlled to 52 The heater is a dia heater the temperature is measured by a thermistor The most common problem is that the temperature will become too high because the Box Temperature is greater than 52 C 1 Check the TEST functions to see if the heater is controlling to the correct temperature 2 Check Optical Bench to see that both the heater and thermistor are fully seated in their respective holes 3 Check the cycling of power to the heater by observing the Photometer Lamp Heater LED on the top of the Power Supply Module 4 Usea DVM to see if heater is getting power The voltage across the heate
119. minate the command Typing lt CRLF gt a few times by itself is a good way to clear the input buffer of any extraneous characters 5 18 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 1 Setting Up the RS 232 Interface The RS 232 communications protocol allows the instrument to be connected to a wide variety of computer based equipment The interface provides two basic functions in the M400A 1 First is a comprehensive command interface for operating and diagnosing the analyzer 2 The interface can also provide an audit trail of analyzer events In this function the port sends out messages about instrument events like calibration or warning messages If these messages are captured on a printer or remote computer they provide a continuous audit trail of the analyzers operation and status The baud rate is set from the front panel by SETUP MORE COMM B AUD Select the baud rate appropriate for your application 300 1200 2400 4800 9600 or 19 200 It is important to note that the other device must have identical settings in order for the communications to work correctly Second is physical wiring of the analyzer to the other unit We have incorporated into the Analyzer LED s that signal the presence of data on the communications lines and also switches to easily re configure the analyzer from DCE to DTE if necessary In addition the front panel diagnostics allow test data streams to be sent out of the
120. mment 1 Press CAL CONC This key sequence causes the M400A to prompt for the SPAN expected ozone span concentration Enter the span concentration value by pressing the key under each digit until the expected value is set This menu can also be entered from CALS or CALZ Press ENTR ENTR stores the expected span value Press EXIT Returns instrument to SAMPLE mode Span the instrument by following the procedure in Table 7 12 Table 7 12 Span Calibration Procedure Number Action Comment The M400A enters the calibrate mode from sample mode Wait for readings to stabilize at span values If you change your mind after pressing SPAN you can still press EXIT here without spanning the instrument Pressing ENTR actually changes the calculation equations M400A returns to SAMPLE mode The analog voltage output should measure 8046 of the voltage range selected e g 4 00VDC if 0 5V output is selected The readings on the front panel display should be equal to the expected span concentration entered in the procedure given in Table 7 11 See the Troubleshooting Section 9 2 8 if there are problems After the zero and the 80 URL points have been set generate five approximately evenly spaced calibration points between zero and 8096 URL without further adjustment to the instrument Allow the instrument to sample these intermediate concentrations for about 10 minutes each and record the instrument responses Plot the analyzer resp
121. monitors the integrity of the I2C bus by sending commands to the rear panel slave device every 30 sec and checking for a valid reply If the check fails a warning message is sent to the front panel and RS 232 port Front Panel Warning Message REAR PANEL NOT DETECTED RS 232 Message WRPANELDET REAR PANEL NOT DETECTED 9 22 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F PIN ASSIG MENTS N CTION HOUSE O1 WN DSR RIS TX DATA RX DATA SIG GROUND R5 252 CONFIGURATION PARAMETERS 19 200 BAU AULT 8 DATA BITS 1 STOP NO PARITY SETTABLE SOS 19 200 BAUD 1 SWITCH SETTABLE ON REAR PANEL CONNECTOR Figure 9 2 RS 232 Pin Assignments 9 23 BOARD Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 3 RS 232 Communications 9 3 3 1 RS 232 Diagnostic Procedures Teledyne API analyzers use the RS 232 communications protocol to allow the instrument to be connected to a variety of computer based equipment RS 232 has been used for many years and as equipment has become more advanced connections between various types of hardware have become increasingly difficult Generally every manufacturer observes the signal and timin
122. move AC power cord from instrument before attempting to remove or replace any parts Check for proper DC Voltages by measuring for the following voltages on the V F Board 5 between TP4 and TP5 15V between TP1 and TP3 15V between TP2 and TP3 If any of these voltages are incorrect check the DC Power Supply schematic in Appendix 11 1 9 42 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 9 IZS Option Diagnosis and Troubleshooting 9 3 9 1 IZS Ozone Generator Lamp This procedure only needs to be done if the lamp is replaced or if the lamp is accidentally moved The procedure adjusts the lamp for optimum operation of the IZS and its feedback circuit Reference Figure 9 6 IZS Module 1 Enter the SETUP menu by pressing SETUP MORE O3 ADJ This causes the lamp drive circuit to output a constant 2 5 V 2 If you are installing a new lamp allow approximately 30 min for lamp output to stabilize Select the O3 GEN Test function on the front panel display Loosen the IZS lamp and rotate until the reading on the display is 2500 mV 500 mV CAUTION UV light present Do not pull the lamp from the IZS assembly 4 Re tighten the hold down screws securing the ozone lamp to the IZS generator assembly 5 Remove access cap from the IZS preamp cover and adjust the pot to refine the front panel reading to 2500 mV 25 6 The IZS lamp and feedback circuit are now set up Procee
123. mper Settings 9 21 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 2 2 Submux Board This board is mounted as a mezzanine board on the CPU card It serves two purposes the first is to transmit digital signals from the CPU to the rear panel status board and secondly to convert the thermistor resistance into a voltage which goes to the mother board then to the V F board The digitized number is sent to the CPU via the STD bus for scaling and linearization 9 3 2 1 Temperature Amplifier Section Four thermistors are brought onto the board through connector P2 A single thermistor is selected from the amp lines which are then decoded by U2 The analog mux U4 selects the appropriate signal which is then routed to U7 for conditioning and scaling then routed back off the board via P2 to the V F board The temperatures measured are 1 Box Temp 2 Sample Temp 3 Ozone Generator Temp 4 Block Temp Proper functioning of this part of the board can be verified by looking at the temperatures using the front panel TEST functions Each voltage being read by the V F board can be checked by using the SIGNAL VO feature in the DIAGNOSTIC menu 9 3 2 2 2 Serial Bus Section The second section of this board takes CPU board digital signals from the P1 connector and passes them to U1 which serializes the signal and sends them to the rear panel board via P2 The CPU continually
124. mperature Sample Introduction System Recorder Analyzer Operational Settings Analyzer Operational Check Precision Check Acceptance Limits Mean temperature between 229 C and 289 C 729 F and 829 daily fluctuations not greater than 2 C No moisture foreign material leaks obstructions sample line connected to manifold Adequate ink supply and chart paper Legible ink traces Correct settings of chart speed and range switches Correct time Flow and regulator indicators at proper settings Temperate indicators cycling or at proper levels Analyzer in samp mode Zero span controls locked Zero and span within tolerance limits as described in Subsec 9 1 3 of Sec 2 0 9 Ref 11 Assess precision as described in Sec 2 0 8 Ref 11 7 28 Frequency and Method of Measurement Check thermograph chart daily for variations not greater than 29C 49F Weekly visual inspection Weekly visual inspection Weekly visual inspection Level 1 zero and span every 2 weeks Level 2 between Level 1 checks at frequency desired by user Every 2 weeks Sec 2 0 8 Ref 11 Action if Requirements are not Met Mark strip chart for the affected time period Repair adj temp control Clean repair or replace as needed Replenish and chart paper supply Adjust recorder time to agree with clock note on chart Adjust or repair as needed Isolate source error and repa
125. n and Cal Values Span Conc Noise at Zero rms PPB 0 2 0 3 Noise at Span rms PPB 0 5 of reading Measured Flows Factory Installed Options Option Installed Power Voltage Frequency Rack Mount w Slides Internal Zero Span IZS Zero Span Valves REC Voltage Range DAS Voltage Range TCHAN Voltage Range PROM Serial Date Technician 2 9 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F J ALB o ang E a8 JINGOW AlddNS 4I3MOd o Hanys __ gt m 2 O 9 97 eco 9 E S 3NW 521 Sg m NI LG 8 o 6 5 het A Cs ai HD jON3H343H WU S 5 SAYA M ONENE i 2 S FOROR EE 3 B Alddns dvi n VOd JJ 410 fe UUUUUSUUUUUUUUU gt A s S l fof 2 2 e a Oo P oF HON3H z o U e U e 3osnos AN V LNOdS 3 Assembly Layou
126. n drifts do not exceed the calibration limits in Section 2 0 9 Q A Manual Ref 11 or limits set by the local agency a calibration need not be performed 7 25 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 12 Summary of Quality Assurance Checks Essential to quality assurance are scheduled checks for verifying the operational status of the monitoring system The operator should visit the site at least once each week Every two weeks a Level 1 zero and span check must be made on the analyzer Level 2 zero and span checks should be conducted at a frequency desired by the user Definitions of these terms are given in Table 7 13 In addition an independent precision check between 0 08 and 0 10 ppm may be required at least once every two weeks Table 7 16 summarizes the quality assurance activities for routine operations A discussion of each activity appears in the following sections To provide for documentation and accountability of activities a checklist should be compiled and then filled out by the field operator as each activity is completed 7 26 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 13 Definition of Level 1 and Level 2 Zero and Span Checks from Section 2 0 9 of Q A Handbook Ref 11 LEVEL 1 ZERO AND SPAN CALIBRATION A Level 1 zero and span calibration is a simplified two point analyzer calibration used when analyzer linearity does
127. n included in the Model 400A software These are described Section 5 3 3 1 For more information on programming custom Data Channels a supplementary document containing this information can be requested from Teledyne API 5 3 3 1 Data Channels The function of the Data Channels is to store report and view data from the analyzer The data may consist of ozone concentration or may be diagnostic data such as the sample flow or detector output 5 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F The M400A comes pre programmed with a set of useful Data Channels for logging ozone concentration and predictive diagnostic data The default Data Channels can be used as they are or they can be changed to fit a specific application They can also be deleted to make room for custom user programmed Data Channels The data in the default Data Channels can be viewed through the SETUP DAS VIEW menu Use the PREV and NEXT buttons to scroll through the Data Channels and press VIEW to view the data The last record in the Data Channel is shown Pressing PREV and NEXT will scroll through the records one at a time Pressing NX10 and PV10 will move forward or backward 10 records For Data Channels that log more than one parameter such as PNUMTC buttons labeled lt PRM and gt will appear These buttons are used to scroll through the parameters located in each record The function of each of the default Data Channels is
128. ng EXIT This will not restore the table contents already computed however If you EXIT within the first 10 minutes of the calibration none of the calibration points will be modified 5 Ifthe procedure is allowed to complete the IZS is ready for use 9 3 9 3 IZS Reference Feedback Option The Internal Zero Span Feedback Option senses the output of the IZS ozone generating lamp and uses this signal to control the lamp drive current This option assures very stable and repeatable ozone concentrations If the IZS reference detector feedback option is present press SETUP MORE O3 MODE REF ENTR to activate this option 9 45 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F ee E mer LE 2 Figure 9 7 Pressure Flow Sensor Module 9 46 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 10 Flow Pressure Sensor The Model 400A uses a critical flow orifice upstream of the sample pump to provide stable flow through the analyzer The module is shown in Figure 9 7 Flow is calculated by measuring the pressure and temperature on the upstream side of the critical flow orifice and performing an ideal gas law correction on the nominal flow through the orifice The downstream pressure is also measured to ensure that the conditions for critical flow are met When any flow problem is being diagnosed the a
129. night before calibration to allow it to stabilize A brand new M400A fresh from the factory may require several days of operation to fully stabilize Allow the photometer or transfer standard to warm up and stabilize before use particularly if stored or transported in cold weather 7 6 7 2 Zero Calibration Procedure Since the zero gas concentration is defined as 0 ppb it is not necessary to enter the expected zero value The following Table 7 10 details the zero calibration procedure Table 7 10 Zero Calibration Procedure Step Number Action Comment 1 Press CAL The M400A enters the calibrate mode from sample mode Note The analyzer does not operate the zero span valves in this mode the zero gas enters through the sample port Wait for reading to stabilize at the zero value If you change your mind after pressing ZERO you can still press EXIT here without zeroing the instrument Pressing ENTR actually changes the calculation equations M400A returns to the SAMPLE mode 7 6 7 3 Span Calibration Procedure Adjust the ozone generation system to produce 80 of the URL Enter the ozone span gas concentration using the procedure in Table 7 11 The expected span concentrations need not be re entered each time a calibration is performed unless they are changed 7 21 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 11 Expected Span Gas Concentration Procedure Step Number Action Co
130. not need to be checked or verified Sometimes when no adjustments are made to the analyzer the Level 1 calibration may be called a zero span check in which case it must not be confused with a Level 2 zero span check Since most analyzers have a reliably linear or near linear output response with concentration they can be adequately calibrated with only two concentration standards two point concentration Furthermore one of the standards may be zero concentration which is relatively easily obtained and need not be certified Hence only one certified concentration standard is needed for the two point Level 1 zero and span calibration Although lacking the advantages of the multipoint calibration the two point zero and span calibration because of its simplicity can be and should be carried out much more frequently Also two point calibrations are easily automated Frequency checks or updating of the calibration relationship with a two point zero and span calibration improves the quality of the monitoring data by helping to keep the calibration relationship more closely matched to any changes drifts in the analyzer response LEVEL 2 ZERO AND SPAN CHECK A Level 2 zero and span check is an unofficial check of an analyzer s response It may include dynamic checks made with uncertified test concentrations artificial stimulation of the analyzer s detector electronic or other types of checks of a portion of the analyzer
131. ns Allowed No password 0 TEST MSG CLR Operator 101 1 CALZ CALS CAL Setup 818 2 SETUP SETUP VARS SETUP DIAG 5 14 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 3 6 Time of Day Clock CLK The M400A has a time of day clock that supports the AutoCal timer time of day TEST function and time stamps on most RS 232 messages To set the time of day press SETUP CLK TIME The CPU will display the current time of day as four digits in the format HH MM where is the hour in 24 hour format i e hours range from 00 to 23 and is the minute 00 59 The operator may change the time of day and then press ENTR to accept the new time or press EXIT to leave the time unchanged To set the current date press SETUP CLK DATE The CPU will display the current date as DD For example April 1 1997 would be displayed as 01 APR 97 Change the date by pressing the button under each field until the desired date is shown Then press ENTR to accept the new date or press EXIT to leave the date unchanged In order to compensate for clocks which run a fast or slow there is a variable to speed up or slow down the clock by a fixed amount every day To change this variable press SETUP MORE VARS Press NEXT until the CLOCK_ADJ variable is displayed To change the setting press the EDIT key and enter the value from the keyboard Press ENTR to accept the change The value entered rep
132. nstruction Manual 02260 Rev F TABLE OF CONTENTS SAFE IY MESSAGES un a et 1 TABLE OF CONTENTS 2 25 2 e cuu sea aerae ranae dus LIST OF FIGURES VII LIST OF TABLES 22 2 ea et VIII 1 1 2 GETTING STARTED ass nnse 2 1 2 WINE AC ING e eu 2 1 2 2 ELECTRICAL AND PNEUMATIC 2 3 2 3 NITIAL OPERATION uns 2 6 3 SPECIFICATIONS AGENCY APPROVALS WARRANTY 3 1 vw Eel ue E 3 1 3 2 EPA EQUIVALENCY DESIGNATION c Diss 3 2 9 9 WARRANTY hilar a aceon oh a ries oe eee IM CREE 3 3 4 THE M400A OZONE enhn nnn nnn 4 1 4 1 PRINCIPLE dede dede tec dettes 4 1 zo P Vo Tercio Alii pee RR HC 4 2 4 1 2 Examining the Ozone Formula Slope and 4 2 4 2 INTEBEERENT REJECTION ts ae meine een 4 3 4 3 OPERATION SUMMARY nassen 4 5 4 3 1 Optical Bench
133. o Leak Check A quick automatic leak check can be done by the instrument as follows 1 Press SETUP MORE DIAG and enter password 2 Press NEXT until AUTO LEAK CHECK appears on the top line of the display 3 Press ENTR 4 Follow the prompts on the display You will be asked to cap the sample inlet port standard configuration or the Dry Air Inlet port units with IZS option The rest of the leak check will be performed automatically and the results of the test will be displayed when it is complete If the instrument fails this test proceed with a manual leak check as described in the sections below to pinpoint the leak source 8 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 8 6 2 Leak Check Procedure for Standard Unit 1 See Figure 8 3 Disconnect the tubing between the Pressure Flow Module and the Pump and cap the tubing end 2 Cap the end of the Critical Flow Orifice assembly that you just removed Connect leak checker to sample inlet Using pressure or vacuum check for leaks When applying pressure or vacuum be sure to allow enough time 30 sec minimum for air to bleed through the critical flow orifice located in the Pressure Flow Module 4 The leak down rate should be less than 1 drop in pressure in 5 min 8 6 3 Leak Check Procedure for Units with IZS Option 1 See Figure 8 4 Disconnect the nut from the inlet fitting to the sample pump 2 Cap the end of the tubing that you just
134. ode This section describes how to configure the Analyzer The setup variables are summarized in Table 5 1 in terms of the button sequences used to access them Table 5 1 Setup Variables Button Sequence Function Default Limits CAL CONC SPAN Set O5 span value 400 ppb 0 10000 ppb CALS CONC O3GEN IZS concentration 400 ppb 0 1500 ppb SETUP ACAL SEQI Setup auto cal sequence Disabled SETUP ACAL SEQ2 Setup auto cal sequence Disabled SETUP ACAL SEQ3 Setup auto cal sequence Disabled SETUP DAS VIEW View DAS data SETUP MORE COMM BAUD RS 232 baud rate 19 200 baud 21 SETUP MORE COMM ID Analyzer ID number 0400 0000 9999 SETUP MORE O3 ADJ IZS lamp setup adj SETUP MORE O3 DARK Detector dark offset CAL calibration nn Dark signal offset 125 mV 75 175 mV SETUP MORE O3 MODE IZS feedback enable SETUP CLK TIME Current time of day 00 00 00 00 23 59 SETUP CLK DATE Current date 01 JAN 00 ed 2 SETUP RNGE SET D A output range 500 ppb 100 20000 SETUP RNGE MODE D A output range mode SNGL DUAL SETUP RNGE UNITS O conc units ppb ppb ppm ug mg SETUP PASS Cal Password enab OFF OFF ON SETUP CFG Software config ALL the setup variables are stored in the Analyzer s EEPROM and are retained during power off and even when new software revisions are installed 5 9 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F NOTE If a
135. oftware contains many adjustable parameters Most of the parameters are set at time of manufacture and do not need to be adjusted for the lifetime of the instrument Some of the variables are user adjustable they are listed in Table 9 5 To access the VARS menu press SETUP MORE VARS ENTR Use the PREV NEXT buttons to select the variable of interest then press EDIT to examine change the value then press ENTR to save the new value and return to the next higher menu If no change is required press EXIT 9 12 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 9 5 MODEL 400A Variables Default Value ee No Name Units Value Range Description DAS_HOLD_OFF Time that data is not put into DAS after CAL or DIAG modes 2 O3 GEN LAMP Me 48 Ozone Generator Lamp Temperature 3 O3 GEN LOWI 100 0 1500 Ozone Generator Low Concentration Setpoint Precision point for Range 1 4 O3 GEN LOW2 100 0 1500 Ozone Generator Low Concentration Setpoint Precision point for Range 2 5 ORIFICE SET C 48 Setpoint for orifice manifold See control 6 SFLOW SET SET Ic mi 5000 400 1000 Nominal Nominal sample flow rate flow rate RS232_MODE Bit 0 99999 Value is SUM of following Field decimal numbers 1 enable quiet mode 2 enable computer mode 4 enable security feature 8 enable front panel RS 232 menus 16 enable alternate protocol 32 enable multidrop protocol CLOCK_ADJ EM time clock speed 9
136. omes as standard equipment with the M400A As an option the M400A can be supplied with an external sample pump A critical flow orifice is used to control the sample flow The orifice is a precision drilled sapphire jewel protected by a 20 micron sintered filter The critical flow orifice never needs adjustment and maintains precise flow control as long as the ratio of the up stream to down stream pressures is greater than 0 53 sonic flow conditions A standard M400A comes with 1 valve The Sample Reference valve switches sample gas either directly from the sample inlet port or gas from the ozone scrubber into the Optical Bench Assembly An optional second valve can be supplied either as part of the IZS option or to supply external calibration gas Sample enters the Analyzer through a 5 micron TFE particulate filter element 37 mm dia Std or 47 mm dia optional located behind the fold down front panel The sample then enters directly into the sample cell Flow diagrams are shown in Figure 8 3 and Figure 8 4 4 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 SOFTWARE FEATURES 5 1 Index To Front Panel Menus Figure 5 1 and Figure 5 2 show a tree menu structure to let you see at a glance where each software feature is located in the front panel menus 5 1 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 41135 O3 TIVISNI SI S3JATVA NvdS OH3Z MO NOlLdO
137. ommand protocol Decimal flags 8 and 16 select which protocol is active 5 5 1 2 Multidrop Mode The RS 232 interface supports a multidrop configuration by means of additional external hardware to handle the line arbitration which allows multiple instruments to be connected to the same RS 232 bus The principal difference between multidrop and non multidrop mode is that the RS 232 RTS signal is used to turn the drivers in the external hardware on prior to transmitting messages and turn the drivers off again shortly after transmitting This multidrop protocol assumes that only one instrument will be transmitting at a time It is up to the controlling host computer to ensure that this protocol is adhered to In addition to hardware level support all of the RS 232 interface commands allow an instrument ID number as part of the command Regardless of whether multidrop mode is enabled if you include an ID number in a command the instrument will only process the command if the ID number matches the instrument s ID number In general the ID number should appear in a command after the first token in the command and preceded by a space The printout below shows several commands each with and without ID numbers 100 logon 940331 logon 100 940331 C zero c 100 zero v baud rate 2400 V 100 baud rate 2400 Notice in all of the commands the ID number of 100 appears after the first token in the command The commands
138. on Manual 02260 Rev F Table 9 1 Test Function Values A Corrective Action for sous eae eres Unacceptable Values RANGE The full scale range of the analyzer s 100 to 10 000 ppb None required analog outputs STABIL Standard deviation of noise reading for Check Table 2 1 for noise Check Section 9 2 3 for causes and last 10 min of data readings at factory checkout remedies for excess noise O5 MEAS The most recent detector reading taken in 2500 4700mV Check and adjust source lamp and Measure mode UV detector as described in Section 9 3 5 The most recent detector reading taken in 2500 4700mV Check and adjust source lamp and Reference mode UV detector as described in Section 9 3 5 The reading from the IZS feedback 75 175mV generator off Check and adjust the IZS lamp and reference detector option gt 75mV Gen on reference detector as described in Section 9 3 9 GEN DRIVE Drive voltage that programs IZS ozone 0 5000mV generator VACUUM Absolute pressure down stream of the Less than of SAMPLE PRES Most common cause for incorrect sample flow control orifice reading readings is faulty sample pump or leaks The absolute pressure of the sample gas in 0 2 0 Hg below ambient Check for pneumatic system the absorption cell pressure problems See Section 9 3 12 O REF O5 GEN SAMPLE PRES Check for pressure transducer problems See Section 9 3 10 table continued 9 3 Teledyne
139. on of each step of the sequence Enter the duration in minutes 1 60 and press ENTR Range to cal This setup parameter is enabled only if the range mode is set to Dual or Auto This parameter determines which range the sequence will check Examples of possible sequences are as following under any one of three available SEQx Example 1 to perform 15 minute zero span 100 96 check once per day at 10 30 pm 12 20 97 MODE ZERO HI STARTING DATE 12 20 97 STARTING TIME 22 30 DELTA DAYS 1 DELTA TIME 00 00 DURATION 15 Qu en De D Example 2 to perform a 15 min zero low span check once per day retarding 15 minutes everyday starting at 11 30 pm 12 20 97 MODE ZERO LO STARTING DATE 12 20 97 STARTING TIME 23 30 DELTA DAYS 0 DELTA TIME 23 45 DURATION 15 Qv ID 7 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Example 3 to perform zero low high span check once per week starting at 11 30 pm 12 20 97 MODE ZERO LO HI STARTING DATE 12 20 97 STARTING TIME 23 30 DELTA DAYS 7 DELTA TIME 00 00 DURATION 15 Qv Uu dm UN Example 4 to perform zero span check once per day at 10 30 pm and zero low high span check once per week starting at 11 30 pm 12 20 97 1 Select any one of SEQx and program as example 1 2 Select any other SEQx and program as example 3 Avoid setting two or more sequences at the same time of the day 7 11 Teledyne Model 400
140. onnect an independently calibrated flowmeter to the sample inlet From the front panel press SETUP MORE DIAG Press NEXT until FLOW CALIBRATION appears and press ENTR Using the keyboard enter the measured flow and press ENTR The Sample Flow test function should now closely match the measure flow 9 47 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 11 Z S Valves Option The Z S Valves Option allows customer provided zero gas or span gas to be connected to separate ports on the rear panel The calibration gasses are routed into the instrument by 2 valves Testing these valves can be done by l Pressing the CALZ button on the front panel energizes the Sample Cal valve shutting off sample flow and admitting zero air to the instrument through the unenergized Zero Span valve 2 Pressing the CALS button on the front panel energizes the Sample Cal valve and the Zero Span valve shutting off sample flow and admitting cal gas to the instrument through the energized Zero Span valve 3 These two valves can be also tested by using the SIGNAL I O part of the DIAGNOSTIC menu 9 3 12 Pneumatic System 9 3 12 1 Troubleshooting Flow Problems In general flow problems can be divided into 3 categories 1 Flow is zero no flow 2 Flow is greater than zero but is too low and or unstable 3 Flow is too high When troubleshooting flow problems it is a good idea to first confirm that the actual flow and no
141. onses versus the corresponding calculated concentrations to obtain the calibration relationships Determine the straight line of best fit y mx b determined by the method of least squares e g see Appendix J of Volume I of the Q A Handbook After the best fit line has been drawn determine whether the analyzer response is linear To be considered linear no calibration point should differ from the best fit line by more than 2 of full scale 7 22 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 7 4 Span Drift Check The first level of data validation should accept or reject monitoring data based upon routine periodic analyzer checks It is recommended that results from the Level 1 span checks Section 2 7 2 Ref 11 be used as the first level of data validation This means up to two weeks of monitoring data may be invalidated if the span drift for a Level 1 span check is 2 2596 For this reason it may be desirable to perform Level 1 checks more often than the minimum recommended frequency of every 2 weeks 7 6 8 Auditing Procedure An audit is an independent assessment of the accuracy of data Independence is achieved by having the audit made by an operator other than the one conducting the routine field measurements and by using audit standards and equipment different from those routinely used in monitoring The audit should be a true assessment of the measurement process under normal operations
142. ontact closure See Figure 2 2 for details on the pneumatic connections to the zero span valves Zero air and span gas should be supplied in excess of 800 cc min demand of the Analyzer The manifold should be vented outside the enclosure and be of sufficient length and diameter to prevent back diffusion and pressure effects Span gas can by generated by a M700 Mass Flow Calibrator equipped with appropriate options or an M401 UV Photometric Ozone Calibrator Zero air can be supplied by the Teledyne API M701 Zero Air Module 6 3 Internal Zero Span IZS Option The IZS option includes a Sample Cal valve a Zero Air Scrubber and a temperature controlled ozone generator The concentration of ozone can be set through front panel controls or the RS 232 port The ozone generator lamp intensity can be monitored and fed back via the CPU for very accurate and stable ozone concentration if the feedback detector option is purchased In the Zero mode ambient air is drawn through the charcoal scrubber and filter through the un energized ozone generator the energized sample cal valve and into the Analyzer see Figure 8 4 In the Span mode the ozone generator is energized and the resulting span gas is drawn through the energized sample cal valve into the analyzer To set the ozone concentration for the IZS ozone generator press CALS CONC O3GEN and enter a value from 50 to 1500 in the current units A value of turns the lamp OFF See Section 9 3
143. ot check 1 Cable connections 2 CPU and Display operation see Section 9 3 1 If these checks are satisfactory it is probable that the keyboard is defective and should be replaced 9 3 1 2 Front Panel Display 1 Turn off power 2 Remove the ribbon cable from the CPU board to the Display 3 Turn Power on 4 A cursor character should appear in the upper left corner of the display If it does not the display is defective and should be replaced If the cursor does appear it is probable that the CPU is faulty 9 3 1 3 Single Board Computer The SBC40 is a full function computer designed for instrument control applications It consists of a 16 bit 8080 microprocessor 2 serial and one parallel ports standard bus interface and 4 sockets for memory The memory sockets consist of 256k ROM containing the multitasking operating system and application code 8k EE prom containing the setup variables 256k RAM containing data collected by the instrument and a time of day clock to provide event timing services The overall function of this board is quite complex Complete testing of this board s functions is not possible in the field The board outline is shown in Figure 9 1 9 19 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Like the display the overall functioning of the CPU can be confirmed by a simple test Locate the CPU board on the mother board by referring to Figure 2 3 Power the instrument on
144. ot displayed this means that the zero reading is too far out of adjustment to do a reliable calibration The reason for this must be determined before the analyzer can be calibrated See Section 9 2 for troubleshooting calibration problems Pressing EXIT will bring you back to the Sample menu or you can leave the instrument in CAL mode if you are also going to make a span check 7 4 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 4 Enter Expected Span Gas Concentrations Procedure Step Number Action Press CAL CONC Comment This key sequence causes the M400A to prompt for the expected ozone concentration Enter the ozone span concentration value by pressing the key under each digit until the expected value is set This menu can also be entered from CALS or CALZ ENTR stores the expected ozone span value Returns instrument to SAMPLE mode Table 7 5 Manual Span Calibration Procedure Span Gas thru Sample Port Step Number Action 4 Press ENTR Comment The M400A enters the calibrate mode Ozone span gas should be entering the sample port Wait for reading to stabilize at span value If you change your mind after pressing SPAN you can still press EXIT here without spanning the instrument Pressing ENTR actually changes the calculation equations and causes the instrument to read the ozone span value entered in Table 7 4 M400A returns to sampling Immediately after
145. ozone To work effectively the scrubber must be heated The temperature is not critical therefore the scrubber is continuously heated with a 12 watt heater which produces a typical temperature of about 70 C at an ambient temperature of 25 C Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F INTENTIONALLY BLANK 6 6 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 CALIBRATION AND ZERO SPAN CHECKS There are several ways to check and adjust the calibration of the M400A These different methods are summarized in Table 7 1 Calibration controls are shown in Table 7 2 In addition all of the methods described in this section can be initiated and controlled via the RS 232 port Zero air is used for all calibration procedures less than 1 ppb of major interferents and a dew point of 5 C or less Ozone should be generated by a stable source and its concentration verified with an Ozone Primary Standard or Transfer Standard Before Calibration 1 Use the SETUP RNGE menu to set the range the instrument will be operated in 2 If you are using any of the following features they must be set up before calibration A Autoranging or Remote Ranging See Section 7 7 B Independent Ranges See Section 7 7 C Normal calibration assumes that these features are already set up NOTE If you are using the M400A for EPA monitoring only the calibration method described in Section 7 6
146. personnel only CAUTION Risk of electrical shock Disconnect power before performing the following operations General Troubleshooting Hints The Model 400A has been designed so that problems can be rapidly detected evaluated and repaired During operation the analyzer continuously performs self check diagnostics and provides the ability to monitor the key operating parameters of the instrument without disturbing monitoring operations A systematic approach to troubleshooting will generally consist of the following four steps performed in order 1 Confirm the proper operation of fundamental instrument sub systems power supplies CPU display 2 Note any warning messages and take corrective action as required 3 Examine the values of all TEST functions and compare to Factory values Note any major deviations from the factory values and take correction action as required 4 Address any dynamic sample related problems 5 Data from our Service Department indicates that 5096 of ALL problems are eventually traced to leaks in the analyzer calibrator zero air system or sample delivery system Suspect a leak first The following sections provide a guide for performing each of these steps Figure 2 3 in this manual shows the general layout of components and sub assemblies in the analyzer and can be referenced in performing the checks described in the following sections Teledyne API Model 400A Analy
147. plays all pressures in inches of mercury absolute in Hg A Absolute pressure is the reading referenced to a vacuum or zero absolute pressure This method was chosen so that ambiguities of pressure relative to ambient pressure can be avoided For example if the vacuum reading is 25 Hg relative to room pressure at sea level the absolute pressure would be 5 Hg If the same absolute pressure was observed at 5000 ft altitude where the atmospheric pressure was 5 lower the relative pressure would drop to 20 Hg however the absolute pressure would remain the same 5 Hg A Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 4 3 3 Computer Hardware and Software The M400A Analyzer is operated by an NEC V40 micro computer The computer s multitasking operating system allows it to do instrument control monitor test points provide analog output and provide a user interface via the display keyboard and RS 232 port These operations appear to be happening simultaneously but are actually done sequentially based on a priority queuing system maintained by the operating system The jobs are queued for execution only when needed therefore the system is very efficient with computer resources The M400A is a true computer based instrument The microprocessor does most of the instrument control functions such as temperature control valve switching Data collection and processing are done entirely in the CPU with the final concentrat
148. port on command This flexibility and diagnostic capability should simplify attaching our equipment to other computers or printers If problems occur see the Troubleshooting Section 9 3 3 Setup from the Front Panel There are 2 additional RS 232 setups that can be done via the front panel 1 Set the instrument ID number by SETUP MORE COMM ID and enter 4 digit number from 0000 9999 This ID number is part of every message transmitted from the port 2 Setthe RS 232 mode bit field in the VARS menu To get to the variable press SETUP MORE VARS then ENTR and scroll to RS232 MODE then press EDIT The possible values are shown in Table 5 6 Typical RS 232 configurations are shown in Table 5 7 5 19 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 5 6 RS 232 Mode Setup Front Panel Decimal Value Description Turns on quiet mode messages supressed Places analyzer in computer mode no echo of chars Enables Security Features Logon Logoff X 3 Enables Teledyne API protocol and setup menus Enable alternate protocol Enable multidrop protocol NOTE To enter the correct value ADD the decimal values of the features you want to enable For example if LOGON and front panel RS 232 menus are desired the value entered would be 4 8 12 5 20 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 5 7 Typical RS 232 Configurations Normal
149. quality control and calibration 7 2 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 7 2 Calibration Controls CALZ ZERO ENTR AdjustO conctozeo CALS CONC SPAN CALS CONC O3GEN Set O generator setpoint CALS SPAN ENTR Adj conc to span value SETUP ACAL SEQI SETUP ACAL SEQ2 SETUP ACAL SEQ3 7 3 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 1 Manual Zero Span Check or Cal with Input from Sample Port Operators can manually check the zero and span set points of the Analyzer while in sample mode by allowing the instrument to sample calibration gas and pressing the CAL button This is also referred to as a multi point calibration To do this type of calibration refer to Table 7 3 Table 7 4 and Table 7 5 Figure 7 1 shows the pneumatic diagram for calibration Table 7 3 Manual Zero Calibration Procedure Zero Gas Thru Sample Port Step Number Action Comment 1 Press CAL The M400A enters the calibrate mode from sample mode The Zero gas must come in through the sample port Wait for reading to stabilize at zero value 3 Press ZERO If you change your mind after pressing ZERO you can still press EXIT here without zeroing the instrument Press ENTR Pressing ENTR actually changes the calculation equations 5 Press EXIT M400A returns to sampling Immediately after calibration data is not added to the DAS averages If the ZERO button is n
150. r should be 115 VAC regardless of the instrument in input voltage The voltage should cycle between 0 and 115 VAC synchronized with the LED on the PSM If no power is observed at the heater the solid state switch in the PSM could be bad 9 33 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 6 Checking the Ozone Scrubber and Main Switching Valve Proper operation of the selective Ozone Scrubber and main Switching Valve can be determined by performing the following procedure 1 Introduce Zero gas at the sample inlet port using either the optional IZS or an external zero gas source and allow the analyzer to stabilize Observe the O5 REF Test Function and make a note of its value 3 Introduce Span gas of approximately 400 ppb concentration at the sample inlet port using either the optional IZS or an external Span gas source and allow the analyzer to stabilize Observe the REF Test Function and note its value If the REF value has decreased by more than 5mV from its value with Zero gas then either the Ozone Scrubber has failed or there is a cross port leak in the main switching valve NOTE If desired this check can be performed using Ozone concentrations higher than 400 ppb In this case the drop in REF in mV should be no greater than REV lt 5 actual concentration 400 To determine which pneumatically bypass the main switching valve by disconnecting t
151. radiation which is why stratospheric ozone protects the life forms lower in the atmosphere from the harmful effects from solar UV radiation Lastly the absorption path length determines how many molecules are present in the column of gas in the absorption tube The intensity of light is converted into a voltage by the detector preamp module The voltage is converted into a number by a voltage to frequency V F converter capable of 80 000 count resolution The digitized signal along with the other variables are used by the CPU to compute the concentration using the above formula Every 6 seconds the M400A completes a measurement cycle consisting of a 2 second wait period for the sample tube to flush followed by a 1 second measurement of the UV light intensity to obtain I The sample valve is switched to admit scrubbed sample gas for 2 seconds followed by a 1 second measurement of the UV light intensity to obtain Ij Measurement of I every 6 seconds minimizes instrument drift due to changing intensity of the lamp due to aging and dirt 1 Adaptive Filter The Teledyne API O3 Analyzer is able to provide a smooth stable output by means of an adaptive filter During conditions of constant or nearly constant concentration the filter is allowed to grow to 32 samples 2 minutes in length providing a smooth stable reading If a rapid change in concentration is detected the filter is cut to 6 samples to allow the Analyzer to quickly respond to rapid
152. rature and pressure Slope and offset corrections are made to the ozone concentration according to the equation Corrected Concentration Slope Measured Concentration Offset An average of the last 32 samples is computed and converted to the number displayed on the front panel This is the ozone concentration The number is also routed to the D A converter and the resulting voltage is output to the back panel 4 2 Interferent Rejection It should be noted that the UV absorption method for detecting ozone is subject to interference from a number of sources The Model 400A has been successfully tested for its ability to reject interference from sulfur dioxide nitrogen dioxide nitric oxide water and meta xylene While the instrument rejected interference from the aromatic hydrocarbon meta xylene it should be noted that there are a very large number of volatile aromatic hydrocarbons that could potentially interfere with ozone detection If the Model 400A is installed in an environment where high aromatic hydrocarbon concentrations are suspected specific tests should be conducted to reveal the amount of interference these compounds may be causing 4 3 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F KEYBOARD DISPLAY STO DIGITAL FS ANALOG BOARD CPU CD ANALOG BUS OUTPUTS FXHA
153. removed Connect leak checker to sample inlet Using pressure or vacuum check for leaks as described above When applying pressure or vacuum be sure to allow enough time 30 sec minimum for air to bleed through the critical flow orifice located in the Pressure Flow Module 4 Toleak check the IZS assembly connect leak checker to Dry Air Inlet port on the rear panel of the instrument Leak check as described above The leak down rate should be less than 1 drop in pressure in 5 min 8 6 4 Leak Check Procedure for Units with Zero Span Valves 1 Disconnect the nut from the inlet fitting to the sample pump 2 Cap the end of the tubing that you just removed Connect leak checker to sample inlet Using pressure or vacuum check for leaks as described above When applying pressure or vacuum be sure to allow enough time 30 sec minimum for air to bleed through the critical flow orifice located in the Pressure Flow Module 4 zero and span gas inlets should also be individually checked Since both of these ports are normally closed simply connect the leak checker and apply pressure or vacuum 8 11 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 8 7 Prom Replacement Procedure 1 Locate the CPU V F card assembly by referring to Figure 2 3 2 Remove the screw that hold the CPU V F card assembly in place and remove the assembly from the motherboard 3 Disconnect the three cables that attach the CPU
154. res all factory defaults D id PRINT Prints properties for all data channels DAS D id PRINT name Prints properties for single data channel Quotes around name are required D id REPORT name Prints DAS records for a data channel Quotes around name are RECORDS number required Parameters in brackets are optional COMPACTIVERBOSE Table 5 11 RS 232 Command Summary Terminal Mode Editing Keys Definition Backspace Erase line Execute command Switch to computer mode Computer Mode Editing Keys Definition Execute command Switch to terminal mode Security Features Definition LOGON id password Establish connection to analyzer LOGOFF id Disconnect from analyzer 5 26 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 5 3 TEST Commands and Messages To request a test measurement the host must issue a command of the form T measurement For example the format of the Reference reading in millivolts would be T 194 11 29 0400 O3 REF 2520mV For a summary of all test functions issue the command T LIST Test measurements request commands are shown in Table 5 12 All the TEST measurements displayed on the front panel display are also available via the RS 232 interface 5 27 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 5 12 Test Measurements Request Commands T RANGE2 Analog output high range T PHOTOMEAS Current meas
155. resents the number of seconds per day the clock gains or loses It should only need to be set once for each Analyzer For example if the clock is running 10 seconds fast each day set the variable to 10 and press ENTR This will cause the clock to run slower by 10 seconds each day 5 3 7 Communications Menu COMM The COMM menu allows you to set the Baud Rate for RS232 communications and the instrument ID To select the Baud Rate press SETUP MORE COMM BAUD and select from the available baud rates and press ENTR To select the Instrument ID press SETUP MORE COMM ID and enter a four digit ID number for the instrument NOTE Multidrop RS232 operation only supports the use of a three digit ID number In this case set the first digit in the ID to 0 See Section 5 5 for more details on the operation of the RS232 interface 5 15 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 3 8 Variables Menu VARS Table 5 3 lists the variable names which are present in the Variables Menu Variables are also accessible through the RS 232 interface Table 5 3 RS 232 Variable Names Variable Name DAS HOLD OFF 0 5 20 min O3 GEN LAMP 0 0 to 100 0 C Legal Values SAMPLE FLOW SET 100 1000 cc min RS232 MODE 0 to 32767 Bit CLOCK ADJ 60 to 60 sec day 5 3 9 Diagnostic Mode DIAG The Diagnostic menu contains several diagnostic tests and setup menus for diagnosing operational problems and pe
156. rformed This Data Channel also records the instrument reading just prior to performing a calibration Note this Data Channel collects data based on an event a calibration rather than a timer This Data Channel will store data from the last 200 calibrations This does not represent any specific length of time since it is dependent on how often calibrations are performed As with all Data Channels a time and date stamp is recorded for every data point logged 5 11 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 5 3 4 Range Menu RNGE The Os concentration range is the concentration value that corresponds to the maximum voltage output at the rear panel The M400A can operate in one of three analog output Range Modes The Range Mode can be changed through the SETUP RNGE MODE menu The modes are described below 5 3 4 1 Single Range Mode In this mode both analog outputs REC and DAS are set to the same range This range can be set to any value between 100 and 20 000 ppb and is accessed through the SETUP RNGE SET menu This is the default range mode for the analyzer 5 3 4 2 Dual Range Mode Selecting dual range mode will allow you to select different ranges for the REC and DAS analog outputs The two ranges are called Low and High The REC output at the rear panel is used for the Low range and the DAS output is used for the High range To set the ranges press SETUP RNGE SET and select which range you want to
157. rforming setup functions that are not part of routine operation The Diagnostic menu is accessed by pressing SETUP MORE DIAG from the front panel and entering the diagnostic password Note The Diagnostic password is always enabled even when the other setup passwords are disabled The diagnostic tests and setup are described in detail in Section 9 1 3 of this manual 5 16 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 5 4 Status Outputs Status outputs report analyzer conditions via contact closures located on the DB 50 connector on the rear panel The pin assignments are listed in Table 5 4 Table 5 4 Status Outputs PIN Pair M low high ZERO CAL N IN ZERO CALIBRATE SPAN CAL N IN SPAN CALIBRATE FLOW ALARM N IF FLOW WARNING TEMP ALARM N 11 12 POWER ON N 13 14 PRESS ALARM N 15 16 LOW SPAN CAL N 17 18 SYSTEM OK N AULT CONDITION EXISTS 19 20 LAMP WARNING N 21 22 HIGH RANGE N o 5 5 RS 232 Interface ANY TEMP WARNING IN DIAGNOSTIC MODE IF M400A IS RUNNING IF LOW PRESSURE IF IN LOW SPAN CALIBRATE IF NO FAULTS PRESENT OFF IF IF UV LAMP INTENSITY IS OUT LIMITS IF UNIT IS IN HIGH RANGE The Model 400A ozone Analyzer features a powerful RS 232 interface which is used both for reporting test results and for controlling the Analyzer from a host computer Because of the dual nature of the RS 232 interface the message format has been carefully desi
158. s Fifty percent of all service problems reported to Teledyne API are eventually traced to leaks in some part of the system Please refer to Section 8 5 for a leak check procedure 9 3 12 3 Pump The pump causes sample to pulled through the instrument To check for proper operation 1 Check that the pump is operating turning 2 Doflow check described in Section 9 3 12 1 If the flow check fails and the pump appears to be otherwise in good condition rebuild it Check the Spare Parts List for pump rebuild part number 9 49 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F INTENTIONALLY BLANK 9 50 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 10 400 SPARE PARTS LIST NOTE Use of replacement parts other than those supplied by Teledyne API may result in non compliance with European Standard EN 61010 1 Table 10 1 Teledyne API M400A Spare Parts List table continued 10 1 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 10 1 Teledyne API M400A Spare Parts List Continued 12 O RING O4 GEN LAMP table continued 10 2 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 10 1 Teledyne API M400A Spare Parts List Continued sw TU009 TUBING 6 1 4 TYGON VA033 TFE 12V SAMPLE REF VALVE VA028 IZS ZERO SP
159. s chosen because it is an unambiguous measure of sample pressure This pressure typically runs 0 5 or so below atmospheric pressure due to the pressure drop in the sample inlet lines Absolute atmospheric pressure is about 29 92 in Hg A at sea level It decreases about 1 per 1000 ft gain in altitude Several additional factors cause changes in atmospheric pressure Air conditioning systems passing storms and air temperature can change the absolute pressure by a few tenths of an inch of Hg Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Sample Flow The SAMPLE FLOW test function is computed from the pressure measured up stream of the sample flow orifice The pressure down stream of the orifice is also checked to assure the assumptions of the equation are valid The Sample Flow TEST function will register variations in flow caused by changes in ambient pressure but will not detect a plugged sample flow orifice The nominal value is 800 80 cc min Sample Temperature Sample temperature is measured in the optical bench assembly at the midpoint of the quartz absorption tube It is used in the computation of the ozone concentration Photo Lamp Temperature The source lamp in the optical bench is temperature controlled to 52 deg C to maintain a stable UV output Once the instrument temperatures have stabilized the photometer lamp temperature should be 52 0 5 deg C O Generator Temperature IZS option only
160. s outlined in Section 9 3 4 2 Connect a Multimeter capable of measuring milliamperes to the current loop output The current output connector is located on pins 7 and 8 of the connector labeled RECORDER on the rear panel Note When measuring the current output with a multimeter or similar low impedance current measuring device a 500 1K ohm resistor must be placed in series with the meter to simulate a load Failure to do this will result in erroneous readings 3 From the front panel press SETUP MORE DIAG Press NEXT until D A CALIBRATION appears and press ENTR Press and the properties for analog output channel will be displayed on the top line The display should show something like DIAG D A 0 CONC 1 CURR NOT CAL NEXT CAL SET This indicates that channel 0 is setup for current output and has not been calibrated If the display shows VOLT instead of CURR then the channel must be setup for current output To do this press SET select CURR as the output type and press ENTR 4 Next press CAL to begin the calibration At this point the display should show DIAG D A CAL CONC 1 CURR ZERO 0100 UP10 UP DOWN DN10 D100 ENTR EXIT EB TEE OU 9 36 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F The zero point for current output can now be set Pressing UP UP10 and U100 will step the Zero point up in incremen
161. strument first arrives it is necessary to get it up and running quickly and verify its correct operation As time passes more detailed information is often required on special configurations calibration alternatives and other operational details Finally there is the need for periodic maintenance and to quickly troubleshoot problems to assure maximum reliability and data integrity To address these needs we have created three indexes to the information inside They are Table of Contents Outlines the contents of the manual in the order the information is presented This is a good overview of the topics covered in the manual There is also a list of Tables and a list of Figures Index to M400A Front Panel Menus The Menu Index Figure 5 1 and Figure 5 2 Table 5 1 and Table 5 2 briefly describes the front panel menus and refers you to other sections of the manual that have a detailed explanation of each menu selection Troubleshooting Section 9 The Troubleshooting Section outlined in the Table of Contents allows you to diagnose and repair the instrument based on variables in the TEST menu the results of DIAGNOSTIC tests and PERFORMANCE FAULTS such as excessive noise or drift The troubleshooting section also explains the operation adjustment diagnosis and testing of each instrument subsystem If you are unpacking the instrument for the first time please refer to Getting Started in Section 2 Teledyne Model 400A
162. t Figure 2 2 10 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 3 SPECIFICATIONS AGENCY APPROVALS WARRANTY 3 1 Specifications Ranges Measurement Units Zero Noise Span Noise Lower Detectable Limit Zero Drift 24 hours Zero Drift 7 days Span Drift 24 hours Span Drift 7 days Linearity Precision Lag Time Rise Fall Time Sample Flow Rate Temperature Range Humidity Range Temp Coefficient Voltage Coefficient Dimensions H x W x D Weight Power Environmental Conditions Recorder DAS Output Analog Output Resolution Status As defined by the USEPA User selectable to any full scale range from 100 ppb to 10 ppm ppb ppm ug m user selectable 0 3 ppb RMS per EPA definition lt 0 5 of reading RMS per EPA definition above 100 ppb lt 0 6 ppb per EPA definition lt 1 0 ppb lt 1 0 ppb lt 1 of reading lt 1 of reading Better than 1 full scale 0 5 reading lt 10 sec per EPA Definition lt 20 sec to 95 per EPA Definition 800 scc min 10 5 40 C 10 90 RH Non Condensing lt 0 05 per 9C 0 05 per V 7 x 17 x 24 178 mm x 432 mm x 610 mm 37 lb 17 kg standard unit 39 16 17 6 kg w IZS 110V 60 Hz 220V 50 Hz 240 V 50 Hz 250 watts 230 V 50 Hz 2 5A Installation Category Overvoltage Category II Pollution Degree 2 2000m maximum altitude 100 mV 1V 5 10 V Bi Polar 0 20 or 4 20 mA current
163. t i e hours range from 00 to 23 and MM is the minute 00 59 Enter the time of day for calibration check and then press ENTR to accept the new time or EXIT to leave the time unchanged NOTE The programmed start time must be a minimum of 5 minutes later than the real time clock See Section 5 3 6 for setting real time clock Delta Days The number of delta days is the number of days between each auto sequence Enter desired number of delay days 0 365 and press ENTR Delta Time The delta time allows the automatic Z S check time of day to be delayed in the format of HH MM where HH is the hour from 00 to 23 and MM is the minutes 00 59 The delta days and delta time are added together to determine the total delay between sequences The delta time parameter allows you to advance or retard the starting time by a fixed amount each time the sequence is run For example Setting the delta days to 1 day and the delta time to 15 minutes will delay the starting time for the sequence by 15 minutes each day If you want to have the sequence run at the same time every day simply set the delta time to zero Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F NOTE Avoid setting two or more sequences at the same time of the day Any new sequence which is initiated whether from a timer the RS 232 or the contact closure inputs will override any sequence which is in progress Duration The durati
164. t should be performed by an individual other than the one who originally reduced the data Initially the audit should be performed 1 day out of every 2 weeks of data For two 1 hour period within each day audited make independent readings of the strip chart record and continue through the actual transcription of the data on the SAROAD form The 2 hours selected during each day audited should be those for which either the trace is most dynamic in terms of spikes or the average concentration is high The data processing audit is made by calculating the difference d O3 A where d the difference between measured and audit values ppm the recorded analyzer response ppm and O3 A the data processing concentration ppm If d exceeds 0 02 ppm check all of the remaining data in the 2 week period 7 24 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 10 System Audit A system audit is an on site inspection and review of the quality assurance activities used for the total measurement system sample collection sample analysis data processing etc itis a qualitative appraisal of system quality Conduct the system audit at the startup of a new monitoring system and periodically as appropriate as significant changes in system operations occur The recommended audit schedule depends on the purpose for which the monitoring data are being collected For example Appendi
165. t the flow meter is in error If the independent flowmeter shows the flow to be correct check the Pneumatic Sensor Board as described in Section 9 3 10 Use an independent flow meter rotameter or mass flow meter to measure sample flow at the sample inlet port at the instrument s rear panel If no independent flow meter is available placing a finger over an inlet port and feeling for a vacuum will at least give an indication whether flow is present Figure 1 3 in this Manual provides a schematic diagram of the Flow in a Model 400A and its optional IZS subsystem Flow is Zero Confirm that the sample pump is operating turning If not check the 115V power to the pump If the pump does not operate with 115V present at its terminal replace the pump Check for plugged pneumatic lines filters or orifices 9 48 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F Low Flow 1 Check for leaks as described in Section 8 5 Repair and re check 2 Check for dirty sample filter or dirty orifice filter Replace filters 3 Check for partially plugged pneumatic lines orifices or valves Clean or replace lines 4 Check if the pump diaphragm is in good condition If not rebuild pump High Flow The most common cause of high flow is a leak around the sample flow orifice To correct remove the orifice replace O rings and re assemble 9 3 12 2 Leak Check An important source of analyzer performance problems is leak
166. tage range 5 When installing the Model 400A allow a minimum of 4 inches of clearance at the back of the instrument and 1 inch of clearance on each side for proper ventilation CAUTION Connect the exhaust fitting on the rear panel to a suitable vent outside the analyzer area Use vent line when sampling from pressurized manifolds Sample pressure should not exceed 1 5 in H 0 over ambient NOTE See Figure 2 2 for rear panel pneumatic connections Sample gas should only come into contact with PTFE quartz or glass Leak check all fittings with soap solution Maximum pressure for leak check is 15 PSI 6 Connect IZS air inlet labeled DRY AIR on the rear panel to a clean dry air supply NOTE The IZS system can be operated successfully at ambient humidity levels However for best stability the imput air should be dried to approximately a 20 dew point Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F NOTE Check that analyzer is set up for proper voltage and frequency CAUTION Power plug must have ground lug NOTE Never disconnect CPU or other PCB cards while under power 510 104100 1 384409 INdLNO INFU4ND 450 13 1531 QNOOSS 915 I3NNVHO 1531 TVO NvdS Wad JONVY ONOO 0 viva XI SM TVO NvdS Way ONOO 0
167. the operator can check the zero and span points of the analyzer by pressing the CALZ or CALS button With the IZS Option installed the CALZ and CALS buttons operate the ozone generator zero air system Pressing CALZ switches the Sample Cal valve to allow the analyzer to draw air through the zero air scrubber and the un energized ozone generator The zero point can be just checked or the instrument can be zeroed when in this mode See Table 7 6 for the procedure Pressing CALS switches the Sample Cal valve so that air is drawn through the zero air scrubber and the energized ozone generator After a few minutes the reading should approach the span level The span point can be checked or adjusted when in this mode See Table 7 7 for the procedure The IZS ozone generator concentration setpoint can be changed by pressing CALS CONC O3GEN and entering the desired ozone concentration Calibration of the IZS ozone generator is covered in Section 9 3 9 2 7 4 Automatic Zero Span Check Automatic zero span checking Z S check must be enabled in the setup mode The Teledyne API model 400A Photometric Ozone Analyzer with IZS or Zero Span Valves option offers capability to check one zero and two span points automatically on a timed basis or through remote RS 232 operation see Section 5 5 If the IZS option is installed its concentration must be set separately Refer to Section 9 3 9 for information on adjusting the IZS concentration Under the
168. tion 2 Isthe documentation complete 3 Will the forms be filed in such a manner that they can easily be retrieved when needed 7 17 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 6 6 Dynamic Multipoint Calibration Procedure The EPA prescribed calibration procedure is based on photometric assays of concentrations in a dynamic flow system It is based on the same principles that the M400A uses to measure ozone The theory is covered in Section 4 1 of this manual Since the accuracy of the calibration standards obtained by this calibration procedure depends entirely on the accuracy of the photometer it is very important that the photometer is operating properly and accurately The fact that the photometer makes a ratio measurement 1 6 rather than an absolute measurement eases this task The checks described in this section if carried out carefully will provide reasonable confidence that a photometer which has the required inherent capability is operating properly Checks should be carried out frequently on a new calibrator and a chronological record of the results should be kept If the record of the photometer performance shows continued adequacy and reliability the frequency of the checks can be reduced with no loss of confidence in the photometer The record however may indicate the need for continued frequent verification of the system condition Even where the record shows excellent stabi
169. tions for Low range so analyzer will read span value Exits back to sample menu Repeat Steps 1 10 for High Range 7 32 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 7 8 References l Calibration of Ozone Reference Methods Code of Federal Regulations Title 40 Part 50 Appendix D Technical Assistance Document for the Calibration of Ambient Ozone Monitors EPA publication available from EPA Department E MD 77 Research Triangle Park N C 27711 EPA 600 4 79 057 September 1979 Transfer Standards for Calibration of Ambient Air Monitoring Analyzers for Ozone EPA publication available from EPA Department E MD 77 Research Triangle Park N C 27711 EPA 600 4 79 056 September 1979 Ambient Air Quality Surveillance Code of Federal Regulations Title 40 Part 58 5 U S Environmental Protection Agency Evaluation of Ozone Calibration Procedures 10 11 600 54 80 050 February 1981 Quality Assurance Handbook for Air Pollution Measurement Systems Vol I EPA 600 9 76 005 March 1976 Field Operations Guide for Automatic Air Monitoring Equipment U S Environmental Protection Agency Office of Air Programs October 1972 Publication No APTD 0736 PB 202 249 and PB 204 650 Appendix A Quality Assurance Requirements for State and Local Air Monitoring Stations SLAMS Code of Federal Regulations Title 40 Part 58 Appendix B Quality Assurance Requirements
170. to come up to temperature During this time temperatures and other conditions are out of specification The software will suppress most warning conditions for 30 minutes after power up After 30 minutes warning messages will be displayed until the respective warning conditions are within specifications Use the CLR key on the front panel to clear warning messages 4 While waiting for instrument temperatures to come up you can check for correct operation by using some of the M400A s diagnostic and test features 5 Check the TEST functions by comparing the values listed in Table 2 1 to those in the display Remember that as the instrument warms up the values may not have reached their final values yet If you would like to know more about the meaning and utility of each TEST function refer to Table 9 1 Also now is a good time to verify that the instrument was shipped with the options you ordered Table 2 1 also contains the list of options Section 6 covers setting up the options 6 When the instrument is warmed up re check the TEST functions against Table 2 1 All of the readings should compare closely with those in the table If they do not see Section 9 7 The next task is to calibrate the analyzer There are several ways to do a calibration they are summarized in Table 7 1 For a preliminary checkout we recommend calibration with zero air and span gas coming in through the sample port The procedure is NOTE Words in all caps ar
171. ts of 1 10 and 100 steps The zero point can be adjusted anywhere between and 4 milliamps Press ENTR when you have reached the desired zero point as measured by your test meter 5 The display will now prompt you to adjust the Gain or full scale output of the current loop Using the UP and DOWN buttons as in step 4 adjust the full scale usually 20ma and press ENTR This completes the current loop calibration Press EXIT several times until you are back at the sample menu 9 3 7 4 RS 232 Port An RS 232 port is provided on the board See Section 5 5 for setup and diagnosis 9 37 Teledyne API Model 400A Analyzer Instruction Manual 02260 Rev F 9 3 8 Power Supply Module The Power Supply Module consists of several subassemblies described in Table 9 8 Table 9 8 Power Supply Module Subassemblies Linear Power Supply The linear power supply board takes multiple voltage inputs from the Board power transformer and produces 5 15 15 12 VDC outputs The outputs are routed to two external connectors P2 and P3 See Figure 9 4 The 5 is used for operating the CPU The 15 is used in several locations for running op amps and IC s The 12 is used for operating fans and valves Switching Power Supply The switching power supply supplies 24 at 2 A to the UV Source lamp power supply The output is made available through J10 on the Switch Board There is a load resistor on the Switch Board to keep the output stable w
172. ue the host computer issues a command of the following format V variable The CPU will respond by sending a message of the following format to the RS 232 output V VARIABLE VALUE WARNLO WARNHI lt DATALO DATAHI gt In both cases VARIABLE is the name of the variable that is being viewed VALUE is the current value of the variable WARNLO and WARNHI are the low and high warning limits respectively but may not appear for all variables since some variables do not have warning limits DATALO and are the low and high data entry limits respectively and are given for all variables The CPU will not set a variable s value or warning limits to values which are outside of the data entry limits For example to see the analyzer UV lamp temperature set point the host computer would issue the command V PHOTO LAMP and the CPU would respond with something like V DDD HH MM 0400 PHOTO LAMP 52 0 51 0 61 0 0 0 TO 100 0 DEGC indicating that the current set point is 52 0 degrees the warning limits are 51 0 to 61 0 degrees and the data entry limits are to 100 degrees To modify a variable s value almost the same format of command is used V variable value warnlo warnhi The variable field is the name of the variable being modified and the value field is the new value warnlo and warnhi are the low and high warning limits respectively and may only be given if the vari
173. ut Additionally the values of most TEST functions can output as an analog voltage at the instrument s rear panel see Figure 2 2 The TEST function to be output is selected by pressing SETUP MORE DIAG Press NEXT until TEST CHANNEL OUTPUT appears Press ENTR Select test channel function and press ENTR Table 9 4 lists the Test functions available for analog output In addition to outputting a value to the analog output channel these tests activate a new test measurement which displays the analog voltage reading on the front panel as TEST XXXX X MV 9 11 Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F Table 9 4 Test Channel Outputs CHASSIS TEMP 0 DegC 70 DegC DCPS VOLTAGE 5000 mV 9 1 3 5 RS 232 Port Test This test is used to verify the operation of the RS 232 port It outputs a 1 second burst of the ASCII letter w During the test it should be possible to detect the presence of the signal with a DVM on pin 2 or 3 depending on the DTE DCE switch setting or by the flickering of the red test LED A detailed procedure is given in the Section 9 3 3 9 1 3 6 V F Board Calibration The V F Board is calibrated when the instrument is set up at the factory Re calibration is usually not necessary but is provided here in case the V F board needs to be replaced and re calibrated The procedure for using the V F Calibration routines is in the Section 9 3 4 9 1 4 M400A Internal Variables The M400A s
174. variable is modified but ENTR is not pressed the variable will not be changed and the analyzer will beep when EXIT is pressed 5 3 1 Configuration Information CFG The software configuration can be displayed by entering the button sequence SETUP CFG PREV NEXT buttons allow scrolling through the configuration parameters For example the should display 400 ANALYZER SBC40 CPU This feature is useful for showing any special features that are present in the currently installed PROM 5 3 2 Automatic Calibration ACAL The AutoCal feature allows the M400A to automatically operate the Zero Span Valve or IZS option to periodically check its calibration Information on setting up AutoCal is in Section 6 4 5 3 3 Data Acquisition System DAS The Model 400A contains a flexible and powerful built in data acquisition system DAS that enables the analyzer to store concentration data as well as many diagnostic parameters in its battery backed memory This information can be viewed from the front panel or printed out through the RS 232 port The diagnostic data can be used for performing Predictive Diagnostics and trending to determine when maintenance and servicing will be required The logged parameters are stored in what are called Data Channels Each Data Channel can store multiple data parameters The Data Channels can be programmed and customized from the front panel A set of default Data Channels has bee
175. x A 40 CFR 58 requires that each analyzer in State and Local Air Monitoring Networks SLAMS be audited at least once a year Each agency must audit 2596 of the reference or equivalent analyzers each quarter If an agency operates less than four reference or equivalent analyzers it must randomly select analyzers for re auditing so that one analyzer will be audited each calendar quarter and so that each analyzer will be audited at least once a year Appendix B 40 CFR 58 requires that each PSD prevention of significant deterioration reference or equivalent analyzer be audited at least once a sampling quarter Results of these audits are used to estimate the accuracy of ambient air data 7 6 11 Calibration Frequency To ensure accurate measurements of the ambient O concentrations calibrate the M400A at the time of installation and recalibrate it 1 No later than 3 months after the most recent calibration or performance audit which indicated the M400A response to be acceptable or 2 Following any one of the activities listed below A An interruption of more than a few days in M400A operation B Anyrepairs which might affect its calibration C Physical relocation of the M400A D Any other indication including excessive zero or span drift of possible significant inaccuracy of the unit Following any of the activities listed in above perform Level 1 zero and span checks to determine if a calibration is necessary If the zero and spa
176. yne API or iii not properly maintained THE WARRANTIES SET FORTH IN THIS SECTION AND THE REMEDIES THEREFORE ARE EXCLUSIVE AND IN LIEU OF ANY IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR PARTICULAR PURPOSE OR OTHER WARRANTY OF QUALITY WHETHER EXPRESSED OR IMPLIED THE REMEDIES SET FORTH IN THIS SECTION ARE THE EXCLUSIVE REMEDIES FOR BREACH OF ANY WARRANTY CONTAINED HEREIN TELEDYNE API SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR RELATED TO THIS AGREEMENT OF TELEDYNE API S PERFORMANCE HEREUNDER WHETHER FOR BREACH OF WARRANTY OR OTHERWISE Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F TERMS AND CONDITIONS units or components returned to Teledyne API should be properly packed for handling and returned freight prepaid to the nearest designated Service Center After the repair the equipment will be returned freight prepaid Teledyne Model 400A Analyzer Instruction Manual 02260 Rev F 4 THE M400A OZONE ANALYZER 4 1 Principle of Operation The detection of ozone molecules is based on absorption of 254 nm UV light due to an internal electronic resonance of the O5 molecule The Model 400A uses a mercury lamp constructed so that a large majority of the light emitted is at the 254nm wavelength Light from the lamp shines down a hollow quartz tube that is alternately filled with sample gas then filled with gas scrubbed to remove ozone The ratio
177. zer Instruction Manual 02260 Rev F 9 1 Operation Verification M400A Diagnostic Techniques 9 1 When the Analyzer is turned on several actions will normally occur which indicate the proper functioning of basic instrument sub systems These actions are 1 The sample pump should start 2 The Display should light and display a log on message followed by a standard Sample display See Figure 4 2 for illustration of a normal display 3 The green sample light on the front panel should turn on If these actions all occur it is probable that the Analyzer s Power Supplies CPU and Display are working properly If any of these actions fail this Section contains procedures for diagnosing the above mentioned subsytems 1 Fault Diagnosis with TEST Variables The Model 400A provides the capability to display the values of TEST functions which show key analyzer operating parameters These TEST functions can be accessed by depressing the TST and TST gt buttons on the front panel By comparing the values of TEST functions to acceptable operating limits it is possible to quickly isolate and correct most problems Table 9 1 provides a list of available Test Functions along with their meaning their range of acceptable values and the recommended corrective actions if the value is not in the acceptable range Additionally Table 2 1 provides a list of TEST values during factory checkout Teledyne Model 400A Analyzer Instructi

instruction manual model 400a ozone analyzer

Contents

Download Pdf Manuals

Related Search

Related Contents