Home

Optisure RS Hygrometer

1. OPTISURE Network settings Network Settings IP Address of OPTISURE 10 9 50 4 TimeOut ms 1000 1000 Recommended Success The instrument responded at address o 10 0 50 40 Figure 4 3 Network Settings Screen Issue 2 2 August 2014 38 Kahn Instruments Inc APPLICATION SOFTWARE Optisure RS User s Manual 4 3 Data Acquisition or Edit Variables Mode Once communication has been established the Options Screen is displayed TISURE Apploation Options Move the mouse over the buttons to see an explanation of the choices Communications IP address 10 0 50 40 Setup Figure 4 4 Options Screen Issue 2 2 August 2014 39 Kahn Instruments Inc APPLICATION SOFTWARE Optisure RS User s Manual 4 3 1 Data Acquisition This mode of operation allows all measured instrument parameters to be graphed and logged in real time ioe 20 000 3056 24 ppmv EF 761 0 m m 376 990 Geet Bara 17 1 90 g Kg Control ws 00 01 24 Acquisition state RUNNING Number of readings 30 Next reading countdown 1 Logfile empty Figure 4 5 Data Acquisition Screen Data Acquisition Control Toolbar Name Description pr A filename must be first be selected to enable data logging Pause Pause data acquisition Plot and log interval Time in seconds between graph and log file updates Path and filename of the log file Log filename Click the small folder icon next to t
2. 00000010 Ppm W sf6 00000011 Ppm W sf6 00000011 g Kg 00000100 g Kg 00000100 g m 00000101 g m 00000101 pressure 00000110 pressure 00000110 flow 00000111 flow 00000111 rh 00001000 rh 00001000 temp difference 00001001 temp difference 00001001 Issue 2 2 August 2014 58 Kahn Instruments Inc APPENDIX C Optisure RS User s Manual Register Configuration B Analog Output Configuration 2 is 14 1312 19 10 9 e 7 o s 4 Analog O P 3 DP 00000000 temp 00000001 Ppm V 00000010 Ppm W sf6 00000011 g Kg 00000100 g m 00000101 pressure 00000110 flow 00000111 rh 00001000 temp difference 00001001 0 20mA 4 20mA 0 1V 0 20mA 4 20mA 0 1V 10 Analog O P 2 Analog O P 10 00 01 00 01 Register Configuration D Status Word EEE EPA E EN 0010 0100 00 Standby 1000 01 Cooling 10 Optics Reset Display hold Max Cool Initia Fault Alarm Humidity Alarm External PRT Initiate Standby 0001 Measurement 0000 Frost Assurance DCC In control Heating Max Cool Data Hold 1 1 1 1 1 1 1 00H 01H 3 DP 10H over water 2 Q lt Lu kE 2 LL Il e Reset defaults 1 DP 2 DP 0 Issue 2 2 August 2014 59 Kahn Instruments Inc APPENDIX C Optisure RS User s Manual Register Configuration F Display Setting A amp B 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Display 1
3. Backspace Cancel input Save input Leaving Menus Oe To return from a menu or to cancel a numeric input touch the exit icon Issue 2 2 August 2014 22 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 6 Menu Structure READOUTS STABILITY GRAPH READOUTS READOUTS OPERATIONAL STATUS DISPLAY SENSOR TEMP READOUT MAXCOOL STANDBY DOC OFF MEASURE OPERATE DCC ON fr D DCC LOGGING OUTPUT ALARM DISPLAY H Display Hold Status Output Select Parameter Resolution Network Settings H Period Filename Output Type Setpoint Primary Unit IP Address Pressure Unit el Reset Optics Interval Parameter Subnet Mask L Output Hold PRT Mode Language Press for more information Press to return to Backlight Main Page Figure 3 6 Menu Structure OUOU Issue 2 2 August 2014 23 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 7 DCC Display Hold Setpoint 0 04 Period Interval Reset Optics Output Hold Figure 3 7 DCC Screen f Holds the values on the display while the instrument is in HOLD mode Display Hold Available Input On Off Period Duration of the DCC cycle Available Input 1 to 59 minutes Reset Optics Triggers a reset of the optical signal level on the next DCC cycle Setpoint Mirror heating temperature above measured dew point during DCC cycle Available Input 50 to 104 F 10 to 4
4. Issue 2 2 August 2014 12 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 5 5 USB Ethernet Communications Port Connector The instrument features a USB port and an optional Ethernet port for communication with the application software The appropriate cable will be supplied with the instrument 1 Check the orientation of the connector and gently push it into the communications socket see Figure 2 7 2 To remove the connector pull it out of the socket by holding the connector body If using an Ethernet cable there will be a small locking tab that needs to be depressed in order to release the connector Do not attempt to remove the connector from the socket by pulling on the cable Figure 2 7 Communications Port Connection Issue 2 2 August 2014 13 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 6 Conversion of Optisure RS to Rack Mount To convert an Optisure RS to a rack mounted version a rack mounting kit Part No S8K PKI is required This conversion pack comprises two steel wings 3 and eight cap screws 1 Each wing bolts to the side of the instrument with four screws as shown in Figure 2 8 Figure 2 8 Conversion to Rack Mount 1 Turn the unit on its left hand end and remove the four screws and washers from the side panel 2 Line up the attachment holes on the right hand side of the instrument wit
5. 11 10 9 8 716 5 4 3 2 12 o r w c w r w r w r w r w r w r w r w r w r w r w r w r w r w r w Mm Mall AAA Val 2 Val 1 amp 2 are in BCD therefore 10H 10 58H 58 and 09H 9 etc so as a result A to F are not valid values Register Configuration L 5 14 13 12 11 10 9 8 7 6 5 4 3 2 ERR r w r w r w r w r w r w r w r w r w r w r w r w r w r w r w r w Mm _ Val 1 a Values in HEX i e 17th March 11H for Vali and 03H for Val2 Register Configuration M signed int Sign bit 1 for e values signed int 7FFF 32767 8000 32768 Issue 2 2 August 2014 61 Kahn Instruments Inc APPENDIX C Optisure RS User s Manual Register Configuration N Floating Point Representation The humidity values for sensors 1 amp 2 are represented in IEEE 754 single precision floating point format in order to cater for the wide range in the value of ppm v This format is Big Ended which means that the Hi byte is at a lower address in memory than the Lo byte and is represented as such in the register memory map The IEEE 754 format is shown below Bit 31 Bits 30 to 23 Bits 22 to 0 Sign Bit Exponent Field Mantissa O Has a 127 bias value Decimal representation of binary 1 Where 1 0 lt value lt 2 0 Examples of floating point to HEX are shown below Example 1 10 3 Sign bit 0 Exponent 3 therefore exponent
6. 3 1 Clean the mirror surface and optics window with a Q Tip soaked in distilled water If the sensor has been exposed to oil based contamination then use one of the following solvents methanol ethanol or isopropyl alcohol To avoid damage to the mirror surface do not press too firmly on the cotton bud Q Tip when cleaning Allow the cleaning solvent to fully evaporate 4 Replace the optics block taking care to align the gold contacts on the block with the gold contacts on the instrument 4 5 Replace the large stainless steel cover screwing it in firmly but taking care not to overtighten it Issue 2 2 August 2014 46 Kahn Instruments Inc GOOD MEASUREMENT PRACTICE Optisure RS User s Manual 6 GOOD MEASUREMENT PRACTICE The Optisure RS is designed to operate in a flowing gas stream Its sensor which measures the moisture content of the sample using a Peltier chilled gold plated copper mirror is designed to operate at pressures up to 145 psig 10 barg When installed within a sealed gas system the sensor is designed for operation with flow rates of 1 and 2 1 scfh 500 to 1000 ml min It is important to insure that the flow rate through the sample line connecting the source to the Optisure RS sensor is high enough to avoid long time lags in response to humidity changes at the sample source 6 1 General Guidelines General guidelines to be followed when setting up a sampling system are as follows H Insure that th
7. Table 3 7 Alarm Parameters Issue 2 2 August 2014 Kahn Instruments Inc 27 OPERATION Optisure RS User s Manual 3 2 11 DISPLAY Display Resolution 2DP FAST Primary Unit yo PRT Mode Internal Pressure Unit psig Language English Stability 5 00 Brightness Figure 3 11 Display Screen Number of decimal places used when displaying parameters on the Resolution Main Screen Available Input 1 2 3 Primary Unit Temperature unit to be used on the display and menus ry Available Input F C Available Input psig barg kPa MPa Stability Time scale in minutes for the Stability Graph on the Main Screen Available Input 1 to 600 minutes Enables or disables the Frost Assurance System Technology See Section 3 3 7 Available Input OFF ON If required for the calibration process or for external monitoring the internal PRT can be made available for external connection via the 4 banana sockets on the back of the instrument Please note that this will disable the internal PRT measurement circuit of the instrument Available Input INTERNAL EXTERNAL Selects the language used for the menu screens Language Available Input English Deutsch Espa ol Francais Italiano Portugu s USA Russian Chinese The brightness of the backlight Available Input 5 to 100 PRT Mode Backlight Table 3 8 Display Parameters Issue 2 2 August 2014 Kahn Instruments Inc 28 OPERATION Optisure RS User s Manu
8. Operational Status Display 20000 20 Table 3 3 1 Cooler Tee Une 20 Table 3 4 Re 24 Table 3 5 Logging Parameters EE 25 Table 3 6 SDCard Stats Indicators ad 26 Table 3 6 1 L llgen EE 27 Table 3 7 Alarm Parametros 27 Table 3 8 Display Parametros 28 Table 3 9 Clock Para Meters ra 29 Table 3 10 Network Parameters oia 29 Table 4 1 Data Acquisition Control Description ccccoonnnccnconnnnonrononnornrnnnnrornananarnrnnnnns 40 Table 4 2 Graph Control Description EE 41 Table 4 3 Status Bar DESCHIPUOMN iii dat 41 Table B 1 Default Set Up Parameters ici aii 54 Table C 1 Register MaPrusesocaaio ira RRA ros 56 Issue 2 2 August 2014 ii Kahn Instruments Inc Optisure RS User s Manual Figures Figure 1 1 EAN E O eet 2 Figure 2 1 e eene 4 Figure 2 2 FONE PANG seit eit tata 6 Figure 2 3 Reak PANG A EE EE egene Z Figure 2 4 POWER SUDO TIIDU EE 8 Figure 2 5 Alarm and Analog Output Connection 10 Figure 2 6 Remote PRI COMNECHON eessen 12 Figure 2 7 Communications Fort e aid 13 Figure 2 8 Conversion tOo Rack MOUN arassa sae E E E E E EA E REE 14 Figure 2 9 ROCK FIRING MONOT EE 15 Figure 3 1 ITmtialising Overlay STen EE 17 Figure 3 2 UE IA 17 Figure 3 3 MANSCOON LIV OU Ei ARA AAA AR AAA AA ERA AA 18 Figure 3 4 Setup Menu SCHOGW ti a A A eatin 21 Figure 3 5 Virtual E arrene crete aia A AAA ia 22 Figure 3 6 MORE SOUCO re Ee 23 Figure 3 7 DESTA Ni AE AAA REA 24 Figure 3 8 LOGGING STEEN iii AA AAA AAA AAA 25 Figure 3 9 DUDES aaa 27 Figure 3 10
9. each of the positive lines Issue 2 2 August 2014 9 Kahn Instruments Inc INSTALLATION Otisure RS User s Manual For each output 1 Remove the terminal block fitted into the analog output socket 2 Strip back the wire for the common black connection to the CH1 output exposing approximately 6mm 0 25 Insert the wire into the COM1 terminal way and screw into the block Do not overtighten the screw 3 Strip back the wire for the signal e g red connection to the OP1 output exposing approximately 6mm 0 25 Insert the wire into the OP1 terminal way and screw into the block Do not overtighten the screw 4 Repeat operations 1 and 2 for the other analog outputs selecting a different color wire for the OP2 and OP3 outputs 5 Locate the terminal block over the connector labelled ANALOG OUTPUTS and push the terminal block firmly into the connector Figure 2 5 Alarm and Analog Output Connection Issue 2 2 August 2014 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 5 3 Alarm Output Connections Two alarm outputs are provided from a terminal block located on the rear panel of the instrument as two pairs of potential free change over relay contacts These are designated as a PROCESS alarm and a FAULT alarm Under the Setup Menu Screen refer to Section 3 2 5 the PROCESS alarm can be configured to represent any one of the measured or calculated parameters and set up to opera
10. field 127 3 130 and bits 30 to 23 10000010 The mantissa 1 2875 which in binary representation 1 01001001 1001 1001 1001 101 Adjusting the mantissa for the exponent moves the decimal point to the right if positive and to the left if negative As the exponent is 3 then the mantissa becomes 1010 0100 1100 1100 1100 1101 therefore 1010 1x23 0x22 1x21 0x20 10 and 0100 1100 1100 1100 1101 0x2 1 1x2 2 1x2 20 0 3 Therefore the word value 0100 0001 0010 0100 1100 1100 1100 1101 4124CCCD Consequently for sensor 1 register 0001 4124 and register 0002 CCCD Example 2 0 0000045 Sign bit 1 Exponent 18 therefore exponent field 127 18 109 and bits 30 to 23 01101101 The mantissa 1 179648 which in binary representation 1 00101101111111010110101 i e 1x2 18 1x2 21 1x2 23 etc 0 0000045 Therefore the word value 1011 0110 1001 0110 1111 1110 1011 0101 B696FEB5 Consequently for sensor 1 register 0001 B696 and register 0002 FEB5 Issue 2 2 August 2014 Kahn Instruments Inc 62
11. instrument should be returned to Kahn Instruments for re calibration Safety Conformity This product meets the essential protection requirements of the relevant EU directives Further details of applied standards may be found in the product specification Issue 2 2 August 2014 d Kahn Instruments Inc Optisure RS User s Manual Abbreviations The following abbreviations are used in this manual DCC FAST MAXCOOL AC atm bar C oF COM dp EU g K aint HMI Hz IEC NI min Ib mA max min mV N C N O No ppmV ppmW PRT psig rh RTU scfh SD sec temp USB V Warnings Dynamic Contamination Correction Frost Assurance System Technology Maximum Sensor Cooling alternating current pressure unit atmosphere pressure unit 100 kP or 0 987 atm degrees Celsius degrees Fahrenheit common dew point European Union grams per kilogram grams per cubic meter Human Machine Interface Hertz International Electrotechnical Commission normal liters per minute pound milliampere maximum minute s millivolt s normally closed normally open number parts per million by volume parts per million by weight Platinum resistance thermometer typically type Pt100 pound s per square inch gauge relative humidity Remote Terminal Unit standard cubic feet per hour storage device card memory card for storing datalog files second s temperature Universal Serial Bus Volts The foll
12. loss of measurement accuracy which results from mirror surface contamination During the DCC process the mirror is heated to a default temperature of 36 F 20 C above the dew point to remove the condensation which has formed during measurement The surface finish of this mirror with the contamination which remains is used by the optics as a reference point for further measurements This removes the effect of contamination on accuracy After switch on the mirror is assumed to be clean therefore the instrument will only run a DCC for 2 minutes to quickly establish a clean mirror reference point By default every subsequent DCC is 4 minutes in duration and will automatically occur every 4 hours At certain times it may be desirable to disable the DCC function in order to prevent it from interrupting a measurement cycle e g during a calibration run A manual DCC can be initiated or cancelled by touching the DCC button on the Main Screen The DCC button is context sensitive i e if DCC is on the Main Screen shows DCC OFF as being selectable Similarly if DCC is off DCC ON is shown It is possible to change the parameters relating to the DCC cycle on the DCC Setup Screen refer to Section 3 2 7 MAXCOOL Function The MAXCOOL function over rides the dew point control loop and applies maximum cooling drive to the Peltier heat pump It can be used H to determine what temperature the mirror can be driven down to with reference to the s
13. options a drop down arrow will appear in the right hand column Choose a new value from the drop down list provided If the variable does not have a fixed list of options type the new value into the right hand column text input area NOTE The variable background colour will turn pink to indicate it has been changed on screen and is pending upload to the instrument Click the Write button to upload changed values to the instrument NOTE Variable values and formatting are checked by the application software before they are uploaded to the instrument A message box will report any errors found Once a modified value has been written to the instrument the background colour will return to white Issue 2 2 August 2014 Kahn Instruments Inc 42 APPLICATION SOFTWARE Optisure RS User s Manual nies th Display hold Prost enzeg Ch Sensor Setpoint RE Interval freca ES Analoque output 1 Arelogue op 1 type Anelogue op Lunt Analogue olp Lan Aralogue op I rear ES Analogue output 2 Analogue ob 2 type Analogue op Zum Analogue pp 2 ran pb 2 rasa SS Analogue output 3 Analogue op 3 type Pernod mins eisie Figure 4 6 Series Variables Editor Screen EE ar Issue 2 2 August 2014 43 Kahn Instruments Inc MAINTENANCE Optisure RS User s Manual 5 MAINTENANCE There are few user serviceable parts on the Optisure RS These include removal and replacement of the AC power supply fuse and cleanin
14. sample tubing to the gas inlet and the vent line to the gas outlet as required 7 Insert the analog and alarm connectors into their respective sockets on the rear of the instrument refer to Figure 2 5 and connect the external PRT probe and USB communications cable and connector as appropriate 8 Connect the power supply cable and switch the ON OFF switch to ON 9 Reinstall any covers to the rack as necessary To remove from the rack follow the directions above in reverse Issue 2 2 August 2014 Kahn Instruments Inc 15 OPERATION Optisure RS User s Manual 3 3 1 OPERATION As supplied the Optisure RS is ready for operation and a set of default parameters has been installed This section describes both the general operation of the instrument and the method of setting it up and changing the default parameters see Section 3 2 5 should this become necessary General Operational Information While the instrument can physically operate in a flowing gas stream of between 1 and 2 1 scfh 500 and 1000 ml min Kahn Instruments recommends operating at 1 6 sch 750 ml min which is the flow rate used during calibration Operating at an alternative rate could impact the instrument s response time The sample inside the sensor is passed over a Peltier chilled gold plated mirror The instrument controls the mirror temperature to a point where a level of condensate is maintained on the mirror surface The temperature of the m
15. setup menu system Table 3 1 Main Screen Description Issue 2 2 August 2014 18 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 2 3 2 3 Customizable Readouts The three readouts on the Main Screen can be configured by the user to show any of the following parameters Dew point Temperature Temperature Dew point Relative Humidity RH Water Content ppmV ppmW g Kg g m e Pressure Flow Pressure is only available as an option if a pressure transducer is installed in the instrument The parameters displayed by default are Dew point Water Content ppmV and Flow Follow these instructions to change the parameter 1 Touch the readout once to enable parameter selection 2 Touch the left or right arrows to select the parameter to be displayed 3 Touch the center of the readout to confirm selection Full Screen Mode aus of the readouts can be shown in full screen mode by touching and holding the readout Operational Status Display The Operational Status display includes the following Reports current operational mode This will either be Measure Standby DCC Hold or Maxcool Next Mode Shows the time in Hours Minutes Seconds remaining until the transition to the next mode of operation Process This two state ON OFF notification indicates whether a parameter process alarm is either ON or OFF The process alarm can be set on any parameter refer to Section 3 2 10 Use
16. wet creating conditions which may cause the sensor to saturate Alternatively it may be used in applications requiring infrequent manual measurements to be taken where it is preferable to have the sensor disabled between measurements In STANDBY mode drive to the Peltier heat pump is removed While STANDBY mode is enabled the sensor temperature will remain constant The main use for this feature is during set up when measurements are not required i e when flow rates are being adjusted and the analog outputs are being configured Issue 2 2 August 2014 Kahn Instruments Inc 35 APPLICATION SOFTWARE Optisure RS User s Manual 4 4 1 4 2 Issue 2 2 August 2014 APPLICATION SOFTWARE The Optisure RS features either USB or Ethernet communications depending on the model A copy of the application software is supplied on a CD with the instrument Installation 1 2 3 4 Extract the contents of the supplied zip file to a suitable location Close all currently running Windows programs Launch the installer and follow the on screen instructions The installer will ask for an authorization code enter 7316 MIL1 Restart the PC to complete the installation Establishing Communications When launching the application software the Communications Setup screen will be displayed The following sections explain how to establish communication with the Optisure RS depending on whether it is fitted with a USB or Ethernet m
17. 0 C 68 F The user is responsible for selecting the appropriate sensor temperature set point via the Cooler Setup Page 3 3 2 2 Operating Practice The Optisure RS will only be capable of measuring dew points down to 50 C 58 F with the cooler temperature set to 20 C 68 F When measuring dew points below 50 C 58 F it is necessary to set the sensor tempoerature to approximately 30 C 54 F above the dew point to be measured in order to maintain a fast speed of response If the dew point is not known then it is advisable to operate in automatic mode to allow the instrument to find the correct temperature autonomously If manual cooler operation is essential then the following steps should be taken to determine the dew point before setting the cooler temperature 1 Insure that the mirror is clean and the sample flow rate is correctly set to 750ml min 1 6 scfh 2 Switch the instrument on 3 Insure the sensor temperature is set to 20 C 68 F 4 After the DCC is complete the Optisure RS will cool the mirror down a If the dew point is wetter than 55 C 67 F i The instrument will cool the mirror below 55 C 67 F Frost will Issue 2 2 August 2014 Kahn Instruments Inc 31 OPERATION Optisure RS User s Manual b Issue 2 2 August 2014 ii then begin to form on the mirror after which the mirror temperature will start to increase and settle on that of the dew poin
18. 0 C Interval Time between automatic DCC cycles Available Input 1 99 hours Set to 0 to disable automatic DCCs Time to hold the output at the last measured value after finishing a DCC Output Hold cycle Available Input 1 to 59 minutes Table 3 4 DCC Parameters Issue 2 2 August 2014 24 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 8 LOGGING Logging Status Not Logging Filename Interval 0 05 Figure 3 8 Logging Screen Parameter Description Status Displays the status of the current logging operation Displays the filename of the current log file Interval Time in seconds between recording readings in the log file Available Input 5 to 600 seconds START STOP eo generates a new file name based on current time and Button Starts logging at specified interval Table 3 5 Logging Parameters Issue 2 2 August 2014 25 Kahn Instruments Inc OPERATION Optisure RS User s Manual The table below explains the status of the SD card The icon is shown in the bottom left hand corner of the Logging screen Issue 2 2 August 2014 SD Card not fitted Insert SD Card Initializing SD Card Wait before attempting to start logging SD Card ready to start logging SD Card locked write protected Remove the SD Card and set the write protect switch on the top left side of the card to the UP position SD Card is currently being written to Do not remove the SD Card or p
19. 00 temperature probe Application software CD H Microscope optional Optics cleaning kit optional 19 Rack mount kit optional e Transport case optional If there are any shortages please notify Kahn Instruments immediately Issue 2 2 August 2014 3 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual Figure 2 1 Unpacking the OPTISURE RS Open the transportation case 5 and unpack carefully as follows 1 Remove the accessories box 4 and the optional rack mount kit box 6 2 Lift out the instrument 2 together with its end packing pieces 1 and 3 3 Remove the end packing pieces 1 and 3 set the instrument down at the site of installation 4 Save all the packing materials for the purpose of returning the instrument for re calibration or any warranty claims Issue 2 2 August 2014 4 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 3 Operating Requirements 2 3 1 Environmental Requirements It is important to operate the OPTISURE RS within the following environmental conditions Minimum Operating Temperature 40 F 5 C Maximum Operating Temperature 86 F 30 C Maximum Relative Humidity 2 3 2 Electrical Requirements The Optisure RS requires the following electrical supply e 85 to 264 V AC 47 to 63 Hz 100 VA max H Alarm outputs comprise two sets of changeover relay contacts one set for a PROCESS alarm and one set for an INSTRUMENT FAU
20. Alarm STOT O NN 27 Figure 3 11 Ee EE 28 Figure 3 12 IOK Eege 29 Figure 3 13 NGLWOIK SCTUINGS STOEN E EELER 30 Figure 3 15 Ee EE eege 20 Figure 4 1 COMMUNICATIONS SCLUD SCHOEN eege eene eebe Eege SES 36 Figure 4 2 Windows Device Manager STen iii Eege SEENEN 37 Figure 4 3 Network SENGS STEEN ee dba 38 Figure 4 4 ODORS SOOO aiar E PO E A ee 39 Figure 4 5 Data EE 40 Figure 4 6 Senes Variables e E 41 Figure 5 1 Fuse RODIGCONMONE EE 42 Figure 5 2 e 43 Figure 5 3 SSSI POOF e 44 Figure 7 1 ee 45 Figure A 1 OPTISURE RS EE enee Eed 52 Figure A 2 RE 52 Appendices Appendix A Technical e tele 50 Appendix B Default Set Up Parameter msi 53 Appendix C Modbus Holding Register Map ciar 55 Issue 2 2 August 2014 ii Kahn Instruments Inc Optisure RS User s Manual Safety The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual The user must not use this equipment for any other purpose than that stated Do not apply values greater than the maximum value stated This manual contains operating and safety instructions which must be followed to ensure the safe operation and to maintain the equipment in a safe condition The safety instructions are either warnings or cautions issued to protect the user and the equipment from injury or damage Use qualified personnel and good engineering practice for all procedures in this manual Electrical Safety The instrument is designed to be compl
21. Connector Table 2 2 Rear Panel Connections Issue 2 2 August 2014 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 5 Rear Panel Connections These tasks should be undertaken only by competent personnel All the connections to the rear panel are electrical connections DANGER Exercise due caution particularly when connecting to Electric external alarm circuits which could be at high potential Shock Risk Connections to the rear panel of the instrument are explained in the following sections 2 5 1 Power Supply Input The AC power supply is a push fit into the power input socket as shown in Figure 2 4 The method of connection is as follows 1 Insure that both ends of the power cable are potential free i e not connected to an AC power supply 2 Check that the ON OFF switch 1 is switched to OFF 3 Push the connector 3 firmly into the power input socket 2 4 Connect the free end of the power cable to a suitable AC power supply source voltage range 85 to 264 V AC 47 to 63 Hz and switch on the AC supply Switch on the instrument as required using the power ON switch Figure 2 4 Power Supply Input Issue 2 2 August 2014 8 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 5 2 Analog Output Connections The three analog outputs can be configured to represent any of the directly measured or calculated output parameters They are provided as 2 wi
22. Display 1 DP 00000000 DP 00000000 temp 00000001 temp 00000001 Ppm V 00000010 Ppm V 00000010 Ppm W sf6 00000011 Ppm W sf6 00000011 g Kg 00000100 g Kg 00000100 g m 00000101 g m 00000101 pressure 00000110 pressure 00000110 flow 00000111 flow 00000111 rh 00001000 rh 00001000 temp difference 00001001 temp difference 00001001 Gs Ya Ts a Tao Ts Te J7 Te Ts Ta T3 12 To TO 7 rw riw r w r w r w in k w k w k w Hu Un Aw Un Uu p w lu DP Temp Press and Flow are logged DP 00000000 by default emp 00000001 Ppm V 00000010 Ppm V 00000010 Ppm W sf6 00000011 Ppm W sf6 00000011 g Kg 00000100 g Kg 00000100 g m 00000101 g m 00000101 pressure 00000110 rh 00001000 flow 00000111 temp difference 00001001 rh 00001000 temp difference 00001001 Register Configuration H as 14 13 12 11 fio fo s 7 6 5 4 3 2 1 lo r w r w r w r w r w iw iw iw k w Hw dw p w p w f w f w w Unsigned integer Range 0 to 65535 Issue 2 2 August 2014 60 Kahn Instruments Inc APPENDIX C Optisure RS User s Manual Register Configuration J as 14 13 12 11 10o e 7 654 3 2 13 0 lt Value d Sign bit 1 for ve values signed int 7FFF 3276 7 8000 3276 8 The value in bits 15 to 0 1 is divided by 10 to give 0 1 resolution for dew point and temperature values Register Configuration K 15114 13 12
23. LT Both sets of contacts are rated at 24 V 1A NOTE THIS RATING MUST NOT BE EXCEEDED Issue 2 2 August 2014 5 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 4 Exterior Layout The controls indicators and connectors associated with the Optisure RS are located on the front and rear panels of the instrument The controls and indicators relating to the operator interface are located on the front panel The gas outlet gas inlet external PRT connection power socket analog output connector remote temperature probe connector alarm relay connector and the USB RJ45 Ethernet socket are located on the rear panel Front Panel S r O AAA 1 2 wm Figure 2 2 Front Panel fone penton O y Takes an SD card used to store logged data SD Card Slot See Section 3 2 8 for more details on how to use the logging features Displays measured values and enables the user to control the Touch Screen operation of the instrument Display See Section 3 2 for information about the touch screen and menu system Exterior housing of the sensor Sensor Housing See Section 5 2 for instructions on how to remove the housing and clean the mirror Table 2 1 Front Panel Controls Issue 2 2 August 2014 6 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual Rear Panel Figure 2 3 Se E Ya Swagelok C
24. Optisure RS User s Manual Optisure RS Hygrometer Kahn Instruments Inc 2013 This document is the property of Kahn Instruments and may not either in part or whole be copied or otherwise reproduced communicated in any way to third parties nor stored in any data processing system without the written authority of Kahn Instruments Inc Issue 2 2 August 2014 Kahn Instruments Inc Optisure RS User s Manual Contents Safe EE iv Electrical Sai eer dEr iv Pressure Sais iv Toxic Materiales iv Repa and Malntenance asin ia iv Calla viscera a A pn nana aries iv leie E lee v WAS Ad v 1 INTRODUCTION casonas naa 1 L1 Operating PrNNGDl Essun dai 1 2 INSTALLATION WEE 3 Bul o Un 3 2 2 Unpacking the HEED ins 3 2 3 Operating Requirements asian tra 5 2 3 1 Environmental Requirements ccccccssseeeeeeeeeeeeeeeeesseseeeseesaaseeessnaneeeeeeersaeeeenes 5 232 Electrical REquIFe mention da 5 24 Exterior LayoUt EE 6 2 5 Rear Panel COMMEGHONS masa alar 8 25 1 Power Supply INP oi 8 25 2 Analog OUtput CONNECHONS asia 9 253 Alarm Output Connections ege nes 11 25 4 Remote PRI Probe sisteici ok eege a EE ene 12 255 USB Ethernet Communications Port Connector s ssssssssssssrrsereenrerrrenrerernrenne 13 2 6 Conversion of Optisure RS to Rack Mount o ccccoonnccnccnononcorononcnncronnononnnrncoronanaazares 14 2 6 1 Installing Rack Mounted Version into Rack 15 DPERATIO N WE 16 Bil Genera
25. Strip back the wire for the N O e g green connection to the N O connector way for the FAULT alarm contact set exposing approximately 0 25 6mm wire Clamp into the screw block N O terminal way Do not overtighten the screw 3 Strip back the wire for the N C e g blue connection to the N C connector way for the FAULT alarm contact set exposing approximately 0 25 6mm wire Clamp into the screw block N C terminal way Do not overtighten the screw Issue 2 2 August 2014 11 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 4 Repeat operations 1 to 3 for the PROCESS alarm contact set using appropriately colored wires 5 Locate the terminal block over the connector labelled ALARMS and push the terminal block firmly into the connector 2 5 4 Remote PRT Probe 1 Rotate the body of the PRT probe connector until it locates in the socket labeled REMOTE TEMPERATURE See Figure 2 6 2 Push the connector into the socket until it locks NOTE Do not attempt to force it into the socket If it will not fit in rotate it until the key locks and it pushes in easily 3 To remove the connector slide the connector s body collar 1 back along its axis away from the instrument to release the lock Gently pull the connector body out of the socket NOTE Do not attempt to pull the connector out with the cable make sure that the collar is first released Figure 2 6 Remote PRT Connection
26. Ya Human Interface Devices TH IDE ATA ATAPI controlers gt Keyboards p y Mice and other pointing devices e This Monitors E gt Network adapters oF Ports COM amp LPT Communications Port COM1 Communications Port COM2 Kahn Companies USB to UART Bridge Controller COM3 Printer Port LPT 1 Prolific USB to Serial Comm Port COMS Standard Serial over Bluetooth ink COM15 ES LY Standard Serial over Bluetooth ink En pa ua Processors EH Sound video and game controllers d System devices Universal Serial Bus controllers i Kahn Companies USB Composite S SafeNet USB SuperPro UltraPro Standard Enhanced PCI to USB Host Controller Standard OpenHCD USB Host Controller USB Composite Device USB Root Hub USB Root Hub PEA mmm Langg Figure 4 2 Windows Device Manager Screen Issue 2 2 August 2014 37 Kahn Instruments Inc APPLICATION SOFTWARE Optisure RS User s Manual 4 2 2 Ethernet Communication 1 Configure the network settings of the instrument Refer to Section 3 2 13 2 Connect the Optisure RS to the network using the supplied Ethernet cable 3 Launch the application software and choose the Network Connection option 4 Click the TCP Settings button to enter the IP address of the instrument 5 Click the Test button If communication with the instrument is successful then proceed to the next screen by clicking the OK button otherwise check network settings and try again
27. address locations together with their relevant register configurations and register map definitions Note Hexadecimal Hex addresses marked with an asterisk denote instrument specific parameters stored in the instrument s flash memory The register maps below the table define the data allocated to each bit byte for each register type Address Address Function Read Default Register Register Map Dec Hex Write Value Confi Definition guration 0000 Instrument Address R W 0001H H INSTID 0001 Dew point Value Hi Word R HUMIDITY_HI re point Value Lo ES om EC IT Lee SEN Temperature Lo Word AMBTEMP_LO AH hi e 0006 pressure value R gt PRESSURE C nr eet f e f AI 2 A Ppmv Lo Word LC O A IT SATA 20 f oon ports Lowe RP remo 11 000B g m Hi Word GM3_ Sa 000C g m Lo Word N GM3_LO i f oo afta awe eee DO EC Flow Value FLOW RATE BEE a oom Heat Pump bie R a eoe _ DCC period Hold Time x EZ a Minutes mee CI ic 0015 Phase Time Hours PHASE_TIME_HRS Phase Time Minutes PHASE_TIME_ 22 0016 Phase Time Seconds R K MIN_SEC 23 0017 Film thickness setting R W A FILM_THICKNESS Issue 2 2 August 2014 56 Kahn Instruments Inc APPENDIX C Optisure RS User s Manual ee LIVE_FILM_ 24 0018 Live film thickness value R A THICKNESS 25 0019 pie 1 output Ma py M MAX_MA1 001A Se 1 output minimum MIN MAI ear 3 output maximum value Analog out
28. al Month Year am 16 EST 3 2 12 CLOCK Hour Minute Figure 3 12 Clock Screen Current date Table 3 9 Clock Parameters 3 2 13 ABOUT Network Settings When using an Optisure RS that is fitted with an Ethernet module this page is accessible via the About Screen Network Settings Y IP Address is 25 28 Subnet Mask 3500 Default Gateway Pe 1 5000 Figure 3 13 Network Settings Screen IP Address The IP address of the instrument Subnet Mask The subnet mask that determines what subnet the IP address is on Default The default gateway for network communication Gateway Table 3 10 Network Parameters Issue 2 2 August 2014 29 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 3 Operating Guide 3 3 1 Automatic Mode 3 3 1 1 Description When the instrument is switched on the cooler set point will initially be 20 C 68 F The instrument will initialize by running a DCC cycle After the DCC cycle is complete the system will cool the mirror As soon as moisture is detected on the mirror the instrument will calculate the required sensor temperature set point which will be displayed in yellow in the top right of the sensor temperature readout on the Main Screen If the dew point is 40 C 40 F or higher the sensor temperature set point will be set to 20 C 68 F otherwise the sensor temperature set point will be set to at least 30 C 54 F above the
29. d to monitor the optical system and the degree of mirror contamination During normal operation with no fault conditions this will read OFF It will be set to ON if there is either a fault with the optics or dp temperature measurement or if the mirror contamination exceeds 100 of the film thickness Indicates the operational mode of the sensor This can be either CONTROL HEATING or COOLING Table 3 2 Operational Status Display Issue 2 2 August 2014 19 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 4 Cooler Set up The Cooler Setup screen is accessed by touching Sensor Temp readout on the Main Screen Refer to Section 3 3 2 for detailed information on the operation of the sensor cooling system Cooler Setup 3 A System Temperature A Input out of range A System Shutdown Figure 3 15 Cooler Setup Screen Set point Controls the sensor temperature Mode Changes between Automatic and Manual cooler control Table 3 3 Operational Status Display Cooler Alarm See Cooler heat sink close to maximum safe temperature The environmental temperature may be too hot or the fan may have stopped operating Continuing to operate the S8000 RS without addressing this problem may cause the cooler to overheat Input out of Hardware fault range Contact Michell Instruments service department Cooler has been automatically disabled to prevent damage System Temperature System Shutdown da caused by ov
30. dew point For example if the dew point is between 60 and 69 C 76 and 92 F the sensor temperature will be set to 30 C 22 F If the system does not detect moisture on the mirror on the first attempt it will change the sensor temperature to 50 C 58 F run another DCC cycle and repeat the process of cooling the mirror until condensation is detected The instrument will monitor the dew point and sensor temperature values and if the dew point rises to within 10 C 18 F of the sensor temperature the sensor temperature set point will be increased by 10 C 18 F This means that the instrument will track the dew point and increase or decrease the sensor temperature accordingly in order to maintain this differential If there is a sudden large increase in dew point and the dew point rises rapidly by more than 20 C 36 F the instrument will wait for the dew point reading to stabilize before changing the sensor temperature This will ensure that short dew point disturbances do not cause the sensor temperature to change unnecessarily Sensor temperature will only change during measurement mode never during DCC 3 3 1 2 Operating Practice Avoid situations in your operating cycle where a dew point is introduced to the instrument which is greater than the current sensor temperature Precautions should be taken to either gradually increase the sample humidity or manually change the cooler temperature in advance If p
31. e thermometer 12 embedded in the mirror represents the dew point Issue 2 2 August 2014 1 Kahn Instruments Inc INTRODUCTION Optisure RS User s Manual The hot side of the Peltier is coupled to an auxiliary cooling system through a thermal mass 13 which smooths its response The cooling system removes heat from the hot side of the Peltier by cooling it to an appropriate temperature This supplements the depression capabilities of the heat pump and enables measurement of very low dew points aN CO N Figure 1 1 Operating Principle Issue 2 2 August 2014 2 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 INSTALLATION It is essential that the installation of the electrical and gas supplies to this instrument be undertaken by competent personnel 2 2 Unpacking the Instrument The shipping box will contain the Optisure RS in a transportation case and an accessories box The accessories box should contain the following items Traceable calibration certificate H SD memory storage card USB or Ethernet communications cable e Power cord Remote Pt1
32. e 3 2 Main Screen Issue 2 2 August 2014 17 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 1 Main Screen READOUTS STABILITY GRAPH READOUTS OPERATIONAL STATUS DISPLAY READOUTS SENSOR TEMP READOUT MAXCOOL STANDBY DCC OFF o ON OT OPERATE Figure 3 3 Main Screen Layout No Name Description Readouts These readouts display measured instrument parameters ien Si Sensor Temperature This readout o shows the measured sensor body Readout temperature The sensor body temperature set point is displayed in yellow in the top right of the readout The cooler mode of operation automatic or manual indicated by a small A or M See Section 3 2 4 for cooler setup parameters Touch the readout once to display the cooler setup menu 3 Stability Graph Displays a plot of the dew point over time Touch the readout once to enter full screen mode 4 Operational Status A detailed description of each item displayed in this area Display is in Section 3 2 3 5 DCC Button Initiate a DCC cycle See Section 3 3 3 for a detailed explanation of the DCC function See Section 3 2 7 for DCC setup parameters Oee Ve explanation of the MAXCOOL function STANDBY Button Switch between Measure and Standby mode When switching to Measure mode a DCC cycle will be initiated See Section 3 3 8 for a detailed explanation of standby mode SETUP Button Access to the Setup Menu See Section 3 2 5 for more information about the
33. e sample is representative of the gas under test The sample point should be as close to the critical measurement point as possible H Minimize the dead space in sample lines Avoid the use of too many T pieces in line couplings or other unnecessary tubing Sample tubing should ideally be specially designed for each application rather than adapted from that previously installed for another application Dead space in sample lines increases response time by holding water molecules which are more slowly released to the passing gas sample e Remove any particulate matter or oil from the gas sample Particulates entering the instrument s sensor chamber will cause contamination of the optical components and the mirror This will result in the necessity for more frequent cleaning If the likelihood of the presence of particulates such as degraded desiccant and rust scale is possible use a particulate filter on the sample input line Contact Kahn Instruments www kahn com for technical advice e Use high quality sample pipe fittings Always use clean high quality stainless steel tubing and fittings This is particularly crucial at low dew points since other materials e g nylon have hygroscopic characteristics and can adsorb moisture on the walls of the tube or even cause moisture to transpire through the walls of the tube from the ambient environment into the sample This causes slower measurement response and in certain circumstances
34. ensor body This temperature is indicated on the display to determine whether or not the instrument is controlling at the dew point and whether it is able to reach it This situation could for instance arise when attempting to measure very low dew points where possibly due to a high ambient temperature the Peltier heat pump is unable to depress the temperature far enough to reach the dew point to determine whether the instrument is controlling by switching MAXCOOL on for a short period and then switching back to MEASURE This will depress the mirror temperature briefly and when it is switched back to MEASURE the control loop should be able to stabilize the mirror temperature at the dew point again The MAXCOOL function can be turned on by touching the MAXCOOL button on the Main Screen 33 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 3 5 3 3 6 3 3 7 Issue 2 2 August 2014 Pressure Compensation As an option the Optisure instrument can be equipped with an internal pressure sensor that measures the sample gas pressure The pressure measured by this sensor is then used internally as the basis for compensation for all of the pressure related parameters ppmV ppmW g m and g Kg If a pressure transducer is not equipped 101 3 kPa is used as the basis of all these calculations The internal pressure transducer is ranged 0 to 232 psia 0 to 16 bara Data Logging The data logging function allows all
35. erheating power supply problem or other safety Table 3 3 1 Cooler Alarm Warnings Issue 2 2 August 2014 20 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 5 Setup Menu Screen The Setup Menu is used to adjust the operational parameters of the instrument change the display setup and start or stop the data logging feature Initially when the Setup Menu Screen is opened a set of labelled icons is displayed Touching one of these icons will take you to the appropriate submenu setup Menu HoJejell Te 190010 DISPLAY ABOUT HELP Figure 3 4 Setup Menu Screen Once a submenu has been entered parameters can be changed by touching the outlined values There are three types of input for editable values H Toggle Button Touching the outlined value will switch between predefined states i e On Off or Auto manual H List Selection A list of options will be displayed for the user to select Numeric Input Touching the outlined value will bring up the numeric keypad see following page Issue 2 2 August 2014 21 Kahn Instruments Inc OPERATION Optisure RS User s Manual Numeric Input When entering a numeric value a virtual keypad will be displayed Figure 3 5 Virtual Keyboard The allowable range will initially be shown at the top of the keypad e g 0 50 Some parameters can be disabled by entering a value of 0 this will be indicated by O off gt 50 ef Clear Input
36. essure 145 psig 10 barg 1 MPa max Remote PRT Temperature Measurement 4 wire Pt100 1 10 DIN class B Measurement Accuracy 0 18 F 0 19C Cable Length 6 6ft 2m 820ft 250m max Flow Sensor Measurement Range 0 to 4 24 scfh 0 to 2000 ml min Optional Integrated Pressure Sensor Measurement Range 0 to 232 psia 0 to 16 bara Measurement Accuracy 0 25 Full Scale Measurement Units barg psig kPa MPa Monitor Resolution User selectable to 0 001 depending on parameter Moisture Fdp or Cdp RH g m g kg ppmy ppmy SF Measurement Units Temperature F or C Pressure barg psig kPa MPa Analog Three channels user selectable 4 20 mA 0 20 mA or 0 1 V Digital USB and optional Modbus TCP over Ethernet SD card slot Outputs Alarm Two volt free changeover contacts one process alarm one fault alarm 1 A 30 VDC isolated contacts HMI 5 7 LCD with touchscreen white on blue graphics Data Logging User set parameters frequency and assignable identifier logged via USB port data qcquisition software or integral SD card 512Mb card provided 32Gb max 40 F to 85 F 5 to 30 C max 80 RH Operating Conditions 85 to 264 V AC 47 63 Hz 250 VA Power Supply Mechanical Specification Di y 7 x 17 50 x 21 65 177 x 440 x 550mm h x w x d sis 37 5lbs 17kg S Sas Circui 316 Stainless steel Inlet 1 4 VCR Sample Gas Connections Outlet 1 4 Swagelok male tube 5 point in house calibratio
37. etely safe when used with options and accessories supplied by the manufacturer for use with the instrument The input power supply voltage limits are 85 to 264 V AC 47 to 63 Hz Refer to Appendix A Technical Specifications Pressure Safety DO NOT permit pressures greater than the safe working pressure to be applied to the instrument The specified safe working pressure is 145 psig 10 barg Refer to the Technical Specifications in Appendix A Application of gas pressures higher than the specified maximum will result in potential damage and may render the instrument unsafe and in a condition of incorrect functionality Only personnel trained in the safe handling of high pressure gases should be allowed to operate this instrument Toxic Materials The use of hazardous materials in the construction of this instrument has been minimized During normal operation it is not possible for the user to come into contact with any hazardous substance which might be employed in the construction of the instrument Care should however be exercised during maintenance and the disposal of certain parts Repair and Maintenance The instrument must be maintained either by the manufacturer or an accredited service agent Refer to www michell com for details of Michell Instruments worldwide offices contact information Calibration The recommended calibration interval for the Optisure RS is one year unless otherwise specified by Kahn Instruments Inc The
38. false dew points In order to minimize response time always use the shortest run of tubing and the smallest diameter possible taking care not to induce pressure differentials by aiming for too high a flow rate through too small a bore Use the minimum amount of couplings and fittings possible as all of these constitute potential moisture ingress points For measurement of samples lt 94 Fdp lt 70 Cdp it is advisable to use electropolished tube to minimize response delays due to moisture adsorption onto the tube walls Issue 2 2 August 2014 47 Kahn Instruments Inc GOOD MEASUREMENT PRACTICE Optisure RS User s Manual Kahn Instruments supplies a range of precision pressure fittings suitable for use with the Optisure RS Contact Kahn Instruments www kahn com for details of the items available e Gas samples Generally if the sample gas in conjunction with water vapor is not corrosive to base metals it should be suitable for measurement by the Optisure RS Gases containing entrained solids should be filtered to remove all traces of these before use of the Optisure RS Care should be taken with gas mixtures containing potentially condensable components in addition to water vapor e g oil to ensure that only water vapor is able to condense onto the chilled mirror surface Issue 2 2 August 2014 48 Kahn Instruments Inc CALIBRATION Optisure RS User s Manual 7 CALIBRATION 7 1 Traceability The calibrati
39. g the sensor mirror Safety This equipment operates from power supply voltages that can be lethal and at pressures depending upon application that could cause injury Insure that any test installation meets the standards described in Section 2 3 of this manual Under NO circumstances should the instrument case be removed or the air vents covered or in any way restricted Maintenance and repair other than that described in this DANGER section must only be carried out by trained personnel and Electric the instrument should be returned to the manufacturer for Shock Risk this purpose 5 1 Fuse Replacement If the instrument fails to operate after it has been connected to an AC power supply 85 to 264 V AC 47 to 63 Hz and switched on proceed as follows 1 Ifthe power supply cable is fitted with a fused plug switch off the power supply and remove the plug Check and if necessary replace the fuse If after installing a new fuse and switching the power supply on the instrument still fails to operate proceed as follows Figure 5 1 Fuse Replacement a 2 Switch the instrument s ON OFF switch 1 to OFF isolate the external power supply and remove the power connector 2 from the instrument s power socket 3 Issue 2 2 August 2014 44 Kahn Instruments Inc MAINTENANCE Optisure RS User s Manual Figure 5 2 Fuse Replacement b 3 Locate the fuse carrier 4 and pull it out of the connecto
40. h the corresponding holes in the right hand wing flange facing outwards 3 Insert the four screws 1 and washers 2 through the wing 3 and tighten finger tight 4 Make sure that the front flange is square to the front of the instrument and tighten the screws 5 Turn the unit on its right hand end and repeat operations 1 to 4 To remove the rack support wings remove the unit from the rack if necessary and follow the directions above in reverse Issue 2 2 August 2014 14 Kahn Instruments Inc INSTALLATION Optisure RS User s Manual 2 6 1 Installing Rack Mounted Version into Rack Figure 2 9 illustrates the method for fitting a rack mount instrument into a standard 19 rack Figure 2 9 Rack Fixing Method 1 Remove the connector blocks from the alarm and analog output sockets 2 If necessary remove any covers from the rack cabinet to gain access to the rear and side 3 Connect the analog and alarm output connector blocks to the internal rack wiring refer to Sections 2 5 2 amp 2 5 3 insuring that there is sufficient free cable to permit withdrawal of the instrument from the rack 4 Slide the instrument into the rack and support its weight while the four alignment screws are inserted 5 Insure that the front panel of the instrument is flush and square with the front of the rack and tighten the fixing screws 6 Connect the
41. his text box to create a new log file Initiate a DCC cycle DEC Refer to Section 3 3 3 for detailed information on the DCC function Toggle between Maxcool and Measure mode Maxcool Refer to Section 3 3 4 for detailed information on the Maxcool function Toggles between Standby and Measure mode Standby Refer to Section 3 3 8 for detailed information on the Standby function Table 4 1 Data Acquisition Control Description Issue 2 2 August 2014 Kahn Instruments Inc 40 APPLICATION SOFTWARE Optisure RS User s Manual Instrument readings and status This area displays all measured instrument parameters and shows the status of the Fault Process and Sensor Cooler Alarm Graph Controls Name Description O O Z O O o Automatically advances the graph as new data is acquired Dragging the mouse on the graph scrolls along the time axis Scroll Time Drag to the left to scroll forwards Drag to the right to scroll backwards Dragging the mouse on the graph changes the scale of the time axis Zoom Time Drag to the left to increase the scale size Drag to the right to decrease the scale size Dragging the mouse on the graph scrolls along the Y axis Scroll Y Drag down to scroll up Drag up to scroll down Dragging the mouse on the graph changes the scale of the Y axis Zoom Y Drag up to increase the scale size Drag down to decrease the scale size Zoom Box Zooms in on both axes in the user selected area Select a parameter fr
42. ime 1 minute DISPLAY FAST On PRT Mode Internal Language English Brightness Display Contrast 100 Output 1 Parameter Dewpoint Output 2 Parameter ppmV Output 3 Parameter Flow Output 1 Type 4 20 mA Output 2 Type 4 20 mA Output 3 Type 4 20 mA OUTPUTS Output 1 Min 80 oC Output 1 Max 20 oC Output 2 Min 0 ppmV Output 2 Max 3000 ppmV Output 3 Min 0 ml min Output 3 Max 1000 ml min Parameter Dewpoint ALARM Setpoint 0 oC Mode Automatic COOLER Setpoint N A Table B 1 Default Set Up Parameters Issue 2 2 August 2014 54 Kahn Instruments Inc APPENDIX COS RS User s Manual Appendix C Modbus Holding Register Map Issue 2 2 August 2014 55 Kahn Instruments Inc APPENDIX C Optisure RS User s Manual Appendix C Modbus Holding Register Map All the data values relating to the S8000RS are stored in holding registers Each of these registers is two bytes 16 bits wide Some of these registers contain instrument specific values e g its own unique system address IP address values etc Others registers hold specific real time data e g measured dew point and temperature Each Modbus message has a two part address code one for the low byte bits 0 through 7 and one for the high byte bits 8 through 15 The facility exists for multiple registers specified by a high and low byte contained in the query message to be addressed and read by the same message The table below describes the instruments registers with their respective
43. irror is then measured as the dew point The Optisure RS is suitable for the measurement of moisture content in a wide variety of clean non corrosive gases It will not contaminate high purity gases and is safe for use in critical semi conductor and fiber optic manufacturing applications 3 1 1 Sample Flow Adjustment Issue 2 2 August 2014 The sample flow is measured by the internal flow meter installed into the sample line preferably after the dew point sensor The recommended flow setting is 1 6 scfh 750 ml min The maximum permitted flow rate is 2 1 scfh 1000 ml min H The sample flow can be adjusted by the installation of a needle valve in the sample line If a pressurized sample is to be measured at atmospheric then the needle valve needs to be installed and adjusted upstream of the sensor For measurements at sample pressure the flow adjustment should be made downstream of the sensor Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 2 Instrument Display The Optisure RS features a 5 7 touch screen display When the instrument is switched on an Initializing overlay will be shown while the menu system loads Figure 3 1 Initializing Overlay Screen After the menu system has loaded the Main Screen will show Temperature 25 01 S O Flow Rate ADP 0 00 748 lt Zi ml min Next Mode 03 28 17 Sensor Temp 0 0 amp Process 0 1 A Fault OFF a WAS fe C Sensor Control Figur
44. l Operational IO MON recia 16 3 1 1 Sample Flow Adjustment omic 16 3 2 Instrument Display iii 17 3 2 1 GEI IEN 18 3 2 2 Customizable Read Outs scr 19 3 2 3 Operational Status Display coi EEN dE 19 3 2 4 Cooler Set Wp EE 20 325 Setup Eug EE 21 3 2 6 Men STC porras eneen EaR nad 23 3 2 7 DCC aea ai 24 3 2 8 aere EE 25 3 2 9 OUT EN KEE 27 3 2 10 ALARM syran gegart hair SEELEN 27 3 2 11 DISPLAY sra 28 3212 E ele 29 3 218 ABOUT Network Settings iii 29 3 3 Operational FUNCOMS cios 30 331 Operating EE 30 332 Sensor COIN is 31 3 33 DCC Dynamic Contamination Control aconcsiaia aaa 33 3334 MAXGCOOL Func rro 34 SN Teen e E 34 3 9 0 Data LOGIN iran tarada 34 3 3 7 Frost Assurance System Technology FAST E 34 338 STANDBY Modest 35 Issue 2 2 August 2014 Kahn Instruments Inc Optisure RS User s Manual APPLICATION SOFTWARE ege eege Seege dal Installation EE 36 42 Establishing COMMUNICAIONS ad As 36 4 2 1 USB COMMUNICATION iii 37 42 2 Ethernet COMMUNICALION eege ubedek d Ee EE a a 38 4 3 Data Acquisition or Edit Variables Mode ANNER 39 4314 Dala ACQUIS OM E 40 til Variable Pla iii iia aiii 42 A E A E 45 52 Sensor Mirror Clean asian ica iii 46 GOOD MEASUREMENT PRACTICE sao 47 6 1 General Cde cade 48 CALIBRATION EE 49 Pale ur UE 49 Tables Table 2 1 Front Panell Controls A 6 Table 2 2 Rear Panel Connections 7 Table 3 1 Main Screen Description a 18 Table 3 2 Operational Status Display sia 19 Table 3 3
45. n NIST 103 to 70 Fdp NPL 90 to 20 Cdp UKAS Accredited Calibration Laboratory UKAS Accredited calibrations optional consult factory Measurement accuracy means maximum deviation between instrument under test and corrected reference To this must be added the uncertainties associated with the calibration system and the environmental conditions during testing or subsequent use EE EE EE Issue 2 2 August 2014 51 Kahn Instruments Inc APPENDIX AIST RS User s Manual SE Sl Figure A 1 OPTISURE RS Dimensions Temperature C Sensor Cooler Maximum Depression Figure A 2 Operational Range Issue 2 2 August 2014 52 Kahn Instruments Inc APPENDIX BIST RS User s Manual Appendix B Default Set Up Parameters Issue 2 2 August 2014 53 Kahn Instruments Inc APPENDIX B Optisure RS User s Manual Default Set Up Parameters Sub Menu Parameter Value Unit Top Readout Parameter Dewpoint MAIN SCREEN Mid Readout Parameter ppmV Bottom Readout Parameter Flow Display Hold 0 Off minutes Period Duration 2 minutes DCC Setpoint 20 oC Interval Measurement Time 4 hours Output Hold Hold Duration 20 minutes LOGGING Interval 5 seconds Resolution 3 decimal places Primary Unit Temperature Unit C Pressure Unit bara Stability T
46. o National Physical Laboratory is over the range 90 C to 90 C Traceability to National Institute of Standards and Technology is over the range 75 C to 20 C Uncertainty of measurement 0 20 20 C DP increasing linearly to 0 40 60 C DP then rising linearly to 0 63 75 C DP 0 31 between 20 C DP and 82 C DP The uncertainty is based on a standard uncertainty multiplied by a coverage factor k 2 providing a level of confidence of approximately 95 Approved Signatory 12 Mar 2012 Michell Instruments Ltd www michell com Figure 7 1 Typical Calibration Certificate C EE Issue 2 2 August 2014 49 Kahn Instruments Inc APPENDIXA OPtisure RS User s Manual Appendix A Technical Specifications Issue 2 2 August 2014 50 Kahn Instruments Inc APPENDIX ACEI RS User s Manual Appendix A Technical Specifications Dew Point Sensor Performance Measurement Technology Chilled Mirror RS80 112 to 68 Fdp 80 to 20 Cdp RS90 130 to 68 Fdp 90 to 20 C dp Measurement Range Dewpoint Measurement Accuracy 0 18 F 0 1 C Temperature PRT measurement 0 18 F 0 1 C accuracy Reproducibility lt 0 09 F lt 0 05 C Stability lt 0 09 F lt 0 05 C Mirror Gold plated copper Temperature Measurement 4 wire Pt100 1 10 DIN class B Sample Flow Rate 1 to 2 1 scfh 500 to 1000 ml min Sample Gas Pr
47. odule OPTISURE Application Software Communications Setup x Choose a communication port number Before you can communicate with the OPTISURE you need to choose a communication port number This can be done automatically or manually Select the method from the options below Auto detect C Manual select Status Idle e OK E Use this port amp skip this screen everytime e Figure 4 1 Communications Setup Screen 36 Kahn Instruments Inc APPLICATION SOFTWARE Optisure RS User s Manual 4 2 1 USB Communication 1 Connect the Optisure RS to the PC using the supplied USB cable 2 Windows will recognize the instrument and automatically install the relevant drivers If the driver installation has been successful then the Windows Device Manager will list the following drivers see Figure 4 2 Kahn Companies USB to UART Bridge Controller Kahn Companies USB Composite Device 3 Launch the application software and choose one of the following types of connection Auto Detect The application software will attempt to find the correct COM port automatically Manual Choose the appropriate COM port from the drop down list as shown in the Windows Device Manager see Figure 4 2 4 Click the OK button to proceed to the next screen E Device Manager Bluetooth Radios Computer lt Disk drives Display adapters Y DVD CD ROM drives 3 Poppy disk controlers JH Floppy dsk drives
48. of the measured parameters to be logged at a user specified interval on the supplied SD card via the SD card slot on the front of the instrument The filename for each log file is generated automatically from the instrument date and time To setup data logging refer to Section 3 2 8 Frost Assurance System Technology FAST Theoretically it is possible for water to exist as a super cooled liquid at temperatures down to 40 F C A gas in equilibrium with ice is capable of supporting a greater quantity of water vapor at a given temperature than a gas in equilibrium with liquid water This means that a measurement below 0 C taken over water will read approximately 10 lower than the same measurement taken over ice When turned on and FAST is enabled the OPTISURE RS makes an initial dew point measurement If the initial measurement is between 0 C and 40 F C then the mirror is driven down to below 40 F C to insure the formation of ice on the mirror surface The instrument then continues operation as normal once ice has formed it will remain as ice until the temperature is raised above 32 F 0 C If required the instrument s FAST function can be switched on and off To enable or disable the FAST function refer to Section 3 2 11 34 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 3 8 STANDBY Mode This function is used for applications where the dew point of the sample gas changes very quickly from dry to
49. om the legend on the right hand side of the graph Dragging the mouse along the graph will move the vertical cursor Show time Y along the time axis The Y value for the selected parameter at the position of the cursor will be displayed above the graph Displays the chart options window Copy Copies the chart to the clipboard as a bitmap file Table 4 2 Graph Control Description Graph Plots the parameters selected by the user in the chart options window Status Bar Name Description Aduisition state Indicates whether data acquisition is running paused or stopped with q the messages RUNNING PAUSED or IDLE ee Number of readings taken since starting the current acquisition session Next reading Countdown timer in seconds which indicates when the next reading countdown will be taken Log file Full path of the log file if specified Table 4 3 Status Bar Description Issue 2 2 August 2014 41 Kahn Instruments Inc APPLICATION SOFTWARE Optisure RS User s Manual 4 3 2 Variable Edit The variable edit mode allows the instrument configuration to be changed through the application software On launch it will automatically read and display the current values of each of the instrument variables Note The variables are not periodically updated on screen To obtain up to date values click the Read button Editing variables To edit a variable first click on it to highlight it If the variable has a fixed list of
50. on of this instrument is traceable to national standards For this reason the instrument can only be calibrated in an accredited e g NIST or UKAS accredited standards laboratory If these facilities do not exist the instrument must be returned to Kahn Instruments or one of their approved agents see www kahn com for contact details The DCC function can be disabled for calibration purposes refer to Section 3 3 3 A calibration certificate bearing a four point calibration is issued with each instrument If required an option is available to add further specific calibration points Contact Kahn Instruments for further information www kahn com CERTIFICATE OF CALIBRATION The under mentioned item has been calibrated at the following points in the Michell Instruments Humidity Calibration Laboratory against Test Equipment traceable to the NATIONAL PHYSICAL LABORATORY Middlesex United Kingdom and to the NATIONAL INSTITUTE OF STANDARDS amp TECHNOLOGY Gaithersburg Maryland USA Certificate Number 54321 Ack Number A12345 Test Date 12 Mar 2012 Test Equipment Q0332 Q0238 Q0354 Q0383 Instrument Serial Number 123456 Product Type S8000 RS Generated Dewpoint C Instrument Display C 80 10 80 06 60 09 60 15 30 11 30 07 9 98 10 03 Remote PRT 123457 read 18 21 C at a temperature of 18 30 C Comments Calibration PASS No adjustments required The results are within specification at the measured points Traceability t
51. onnection for venting sample gas to atmosphere or vent line once if Gas Outlet has passed through the instrument 1 4 VCR Gas Connection for supplying the instrument with sample gas usually at Inlet a pressure slightly higher than atmospheric to maintain flow throug the instrument 3 External PRT Banana sockets for external 4 wire measurement of the internal PR Connection See Section 3 2 11 for more info Universal power input 85 to 264 V AC 47 to 63 Hz POWE BOCKEN Fuse 3 15A Anti Surge Glass 20mm x 5mm Features integrated power ON OFF switch 6 Way Three configurable 2 wire channels providing 0 20 mA Analog 4 20 mA or 0 1 V output See Section 3 2 9 for instructions on how to configure the analog ove outputs Connecter See Section 2 5 2 for general information Remote Temperature Probe Connector 6 Pin Socket for connection of remote Pt100 temperature probe Process and Fault alarm outputs See Section 2 5 3 for general information on the alarm relays See Section 3 2 10 for instructions on how to configure the process alarm Used for communication with the instrument over a networl Ethernet connection See Section 3 2 13 for details on how to configure the network settingg See Section 4 1 for information on using and installing the applicatio software Used for communication with the instrument via the application software See Section 4 1 for information on using and installing the applicatio software Alarm Relay
52. ower off the instrument Logging in progress Do not remove the SD Card or power off the instrument SD Card error Check the card is formatted correctly FAT 16 Note FAT 32 cards may appear to work in the S8000 RS but are not supported by the firmware and data loss will occur Hardware error Contact Michell Instruments service department Table 3 6 Card Status Indicators 26 Kahn Instruments Inc OPERATION Optisure RS User s Manual Output 1 le Output Type 0 20mA Minimum ee 100 Figure 3 9 Outputs Screen Output Select Selects the output to be adjusted Available Input Output 1 2 or 3 Selects the type of analog output signal to use Output Type Available Input 4 20 mA 0 20 mA O 1 V The parameter used to control the selected output Available Input g m g Kg T DP DP RH ppmV ppmW T psig barg kPa MPa ml min Minimum The minimum output range for the selected parameter Available Input Dependent on parameter Maximum The maximum output range for the selected parameter Available Input Dependent on parameter Table 3 6 1 Outputs Parameters Parameter Setpoint Parameter 3 2 10 ALARM Figure 3 10 Alarm Screen Parameter The parameter used to control the alarm Parameter Available Input g m g Kg T DP DP RH ppmV ppmW T psig barg kPa MPa ml min Setpoint Set point that triggers the alarm relay to activate Available Input Dependent on parameter
53. owing general warnings listed below are applicable to this instrument They are repeated in the text in the appropriate locations Where this hazard warning symbol appears in the following sections it is used to indicate areas where potentially hazardous operations need to be carried out Where this symbol appears in the following sections it is used to indicate areas of potential risk of electric shock v Kahn Instruments Inc INTRODUCTION Optisure RS User s Manual 1 1 1 INTRODUCTION The Optisure RS is a high precision instrument used for the measurement of moisture content in air and other gases Relative humidity and other calculated parameters based on dew point pressure and temperature of the sample gas can also be displayed Gases can be sampled at a maximum pressure of 145 psig 10 barg The Optisure RS is capable of measuring dew points as low as 112 F or 130 F 80 C or 90 C depending on the model RS80 or RS90 it can measure dew points up to but not including the point of condensation Operating Principle The system operates on the chilled mirror principle whereby a gas sample is passed into the sensor housing and flows over the surface of the chilled mirror contained within At a temperature dependent upon the moisture content in the gas and the operating pressure the moisture in the gas condenses out on the surface of the mirror An optical system is used to detect the point at which thi
54. put x ES Get configuration 1 par os poe gee Analog output 0020 configuration 2 OP_SELECTION2 33 0021 Logging Interval R W LOG_INTERVAL aer unes command RM E uncom 35 0023 ea o Set Point R W A Ei 0024 Emitter Drive R W H EMITTERDRIVE E ae 0026 RTC Year val1 Month YEARMONTH val2 RTC Date val1 Hours val2 DATENRS 0028 RTC Mins val1 Secs MINSSECS val2 DISPLAY _ 42 002A Display Setting 2 F SC 43 0028 N A 002C N A BEE e ene oom ars Tf een Filename HHMM FILENAME HHMM e or Firmware Version Nomar EE AA Ap ASEO CT 50 0032 N A GREEN Process Alarm 52 0034 Configuration Display R W P EE e Brightness 53 0035 Process Alarm Set Point R W M Et IP Address octets 1 and 2 IPADDR1 IP Address octets 3 and 4 IPADDR2 Issue 2 2 August 2014 57 Kahn Instruments Inc APPENDIX C Optisure RS User s Manual and 2 184 Default Gateway octets R W n a T DGADDR2 3 and 4 Subnet Mask Hi Word Subnet Mask Lo Word octets 3 and 4 SE et lan ar Table C 1 Register Map Register Configuration A Sign bit 1 for ve values signed int 7FFF 327 67 8000 327 68 The value in bits 15 to 0 1 is divided by 100 to give 0 01 resolution for dew point and temperature values Register Configuration B Analog Output Configuration 1 EERIE SEE eS DP 00000000 DP 00000000 temp 00000001 temp 00000001 Ppm V 00000010 Ppm V
55. r housing 5 A small screwdriver inserted under the lip may be useful in order to pry it out 4 Replace the fuse cartridge 6 NOTE It is essential that a fuse of the correct type and rating is fitted to the instrument fuse 3 15A Slo Blow Glass 20mm x 5mm 5 Install a new fuse 6 into the fuse holder 4 and push the fuse carrier 4 back into the power connector housing 5 6 Install the power connector 2 into the power socket 3 switch on the external power supply and switch on the instrument 1 Check that the instrument is now operational If the fuse blows immediately on switch on either contact Kahn Instruments DO NOT ATTEMPT ANY FURTHER SERVICING PROCEDURES Issue 2 2 August 2014 Kahn Instruments Inc 45 MAINTENANCE Optisure RS User s Manual 5 2 Sensor Mirror Cleaning Throughout the life of the instrument periodic cleaning of the mirror surface and optics window may be required The frequency of this depends upon operating conditions and the potential in the application for contaminants to be deposited on the mirror Sensor cleaning is mandatory if the instrument indicates an optics fault The cleaning procedure is as follows 4 3 2 Figure 5 3 Sensor Mirror Cleaning 1 Switch off the instrument and unscrew the large stainless steel sensor cover 1 on the front of the instrument 2 Carefully pull the optics block 2 out to reveal the mirror
56. re signals from a 6 way connector located on the rear panel of the instrument Each of these outputs can be set up as either a current loop signal 4 20 mA or 0 20 mA or alternatively as a 0 1 V voltage signal The configuration of these outputs i e parameter represented output type current loop or voltage and upper lower span levels are set up via the Setup Menu Screen refer to Section 3 2 9 These signals may be used to control external systems During a DCC cycle and for the hold period following a DCC cycle they are held at the level that they were at immediately prior to the start of the cycle When the dew point measurement is stable or if the maximum hold period has expired they are released and will track the selected parameter throughout the measurement cycle The default settings of these analog outputs are Channel 1 Dew point 112 to 68F 80 to 20 C Channel 2 ppmv 0 to 3000 Channel 3 Flow 0 to 1000ml min NOTE The analog outputs are only active during the MEASURE phase They will therefore be off after switch on and remain off until the system enters the MEASURE phase The three analog output ports connections are made via a single 6 way push fit connector block as shown in Figure 2 5 All outputs are 2 wire positive going signals referenced to a common 0 V line To differentiate between the outputs it is recommended that a black lead be used for each of the COM common lines and a separate color for
57. recautions are not taken condensation may form in the inlet tubing see Section 3 4 1 3 Flood Recovery for more detail During transitions from a wet to a dry dew point condensate formed during the wet measurement may not always clear from the mirror before it cools to the new dew point Poor frost formation will result leading to an interruption of the measurement To prevent this when the sensor temperature target changes to at least 30 C 58 F below its present value a DCC will be triggered automatically to clear any remaining condensate from the mirror Issue 2 2 August 2014 30 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 3 1 3 Flood Recovery If the sensor has detected that a flooding event has occurred the following steps will be taken to recover the measurement 1 The sensor cooler will be switched off and the sensor temperature will rise to 20 C 68 F 2 The mirror temperature will be increased 3 Once the sensor temperature has reached 20 C 68 F a DCC will be initiated 4 Once a DCC cycle has been completed normal measurement will resume The instrument will indicate when flood recovery is active by means of a yellow FR Flood Recovery warning icon displayed in the sensor temperature window The sensor status indicator will also show FR in red text 3 3 2 Manual Mode 3 3 2 1 Description When the instrument is switched on the cooler set point will initially be 2
58. s occurs and this information is used to control the mirror temperature and maintain a constant thickness of the condensation layer on the mirror surface A light emitting diode 1 provides a light beam of constant intensity which is focused by a lens system 2 to become the incident beam on the mirror surface 3 flooding it with a pool of light Before the light beam reaches the mirror 3 a beam splitter 4 directs part of the beam via a lens system 5 onto a sensor 6 which monitors the intensity of the LED light and provides a feedback loop to keep this at a constant level Two sensors 7 and 8 monitor the light level reflected by the mirror One of these sensors 7 measures the light level due to the reflected incident beam and the other 8 measures the degree of light scatter due to the formation of water ice on the mirror surface Each sensor has its own optical lens system 9 and 10 to concentrate the reflected light onto the sensor The output from each of these sensors is compared and then used to control the drive to a Peltier heat pump 11 Dependant on the result of this comparison the control system will cause the heat pump 11 to either heat or cool the mirror 3 in order to maintain the desired condensation film thickness on the mirror surface At an equilibrium point where the evaporation rate and condensation rate at the surface of the mirror are equal the mirror temperature read by a Pt100 platinum resistanc
59. t The Optisure RS will only measure this dew point for approximately 40 minutes with the cooler temperature set to 20 C 68F Once the dew point has been found set the cooler temperature to approximately 30 C 54 F above the dew point If the dew point is dryer than 55 C 67 F i ii iii iv v vi The instrument will cool the mirror down to approximately 55 to 65 C 67 to 85 F depending on the actual sensor temperature When the mirror has been cooled to the minimum temperature possible it will remain at that value However due to heat generated by the Thermoelectric cooler cooling at the limit of its capacity the mirror temperature will gradually increase Observing the mirror through the microscope will confirm that there is no frost on the mirror and therefore the dew point is lower than the displayed mirror temperature Switch the instrument to Standby Set the sensor temperature to 50 C 58 F and wait for it to stabilize Switch the instrument to Operate The instrument will cool the mirror below the dew point Frost will then begin to form on the mirror after which the mirror temperature will increase to that of the dew point 32 Kahn Instruments Inc OPERATION Optisure RS User s Manual 3 3 3 3 3 4 Issue 2 2 August 2014 DCC Dynamic Contamination Control Dynamic Contamination Control DCC is a system designed to compensate for the
60. te when a pre set parameter threshold level is exceeded By default the PROCESS alarm is set to monitor the dew point parameter The FAULT alarm is a non configurable alarm which continuously monitors the degree of contamination of the chilled mirror During normal operational conditions this alarm will be off If the optics or the mirror contamination exceeds 100 of the film thickness or if a fault exists on the Pt100 the alarm is triggered and the relay contacts will change state This fault is also reported to the status area of the Main Screen The two alarm output ports are connected to the instrument via a single 6 way push fit connector block as shown in Figure 2 5 Each output comprises a 3 wire set of potential free change over relay contacts Each contact set is labelled COM common 0 V N O normally open with respect to COM and N C normally closed with respect to COM To differentiate between the alarm output channels it is recommended that a black lead be used for each of the COM common lines and a separate color for each of the N O and N C lines AN WARNING Alarm leads MUST be potential free when wiring DANGER to the connector block Electric Shock Risk For each output 1 Strip back the wire for the common black connection to the COM connector way for the FAULT alarm contact set exposing approximately 0 25 6mm wire Clamp into the screw block COM terminal way Do not overtighten the screw 2

Optisure RS Hygrometer

Contents

Download Pdf Manuals

Related Search

Related Contents