Diffusion Transmitter - User Manual
Contents
1. 5 Plug the new sensor into the PC board in the top half of the detector housing 6 Screw the bottom half of the detector housing onto the top half 7 Turn the power on 8 Perform the calibration procedure described in the Calibration chapter of this manual You can zero the detector right away but for best results let the detector stabilize for 1 hour before calibrating 71 0090 REV C Maintenance Replacing the Detector YY WARNING v In locations classified as hazardous National Electric Code Article 500 and with power on the area must be certified gas free before you open the detector housing Consult prevailing national local and corporate requirements for certification 1 Turn off or unplug all incoming power at the power source 2 Unscrew and remove the cover from the enclosure 3 Disconnect the detector cable from the amplifier 4 Unscrew the detector assembly from the conduit hub of the enclosure and pull the connector out through the hub 5 If the sensor is operational unscrew the bottom half of the detector housing Unplug the sensor from the PC board If you are replacing the entire detector assembly including the sensor remove the replacement sensor from its container and if installed remove the spring placed between the pins marked R reference and S sensing CAUTION Do not remove the spring until you are ready to perform the start up procedure The detector will take long2. 6 r 2 D 4 Amplifier RESET VE i Diffusion Transmitter cip O 3 Nic pwr com 2 ol oc Z TB2 Channel 2 optional Figure B 3 SafeTnet 2000 210 and 410 External Wiring 28 71 0090 REVC Appendix B Model 2321 11 10_ D 9 Z 8_ Z TAR QD 6_ YQ 5_ 4 Amplifier ea 3 Diffusion Transmi C FB QD n lol A Q Figure B 4 Model 2321 External Wiring Model 1620 POS 1 POS 2 WARN ALARM TRBL DC POWER RECORD POS 3 Pos 4 DOC A R O C A R NC NO C NC NO C NC NO C 8COM 2 O C A R O C A R 0 9 fg 09 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O 0 O 0 0 O Note Hook up position 2 3 and 4 same as position 1 Amplifier Diffusion Transmitter FB De OT e SE Ground Screw on Conduit Hub Figure B 5 Model 1620 External Wiring 71 0090 REV C 29 Diffusion Transmitter Operator s Manual 30 71 0090 REVC CALIBRATION RESPONSE CHARTS C Appendix Appendix C shows the Remote Diffusion Transmitter calibration response charts _ 500 7 20 2 a 3 gt 3 400 16 gt a E 3 x 300 12 E o a 200 8 w ic i a lt 100 4 0 02 0 4 06 0 8 GAS CONCENTRATION IN PPM 1 0
3. AMPLIFIER DETECTOR OUTPUT MILLIAMPS AMPLIFIER DETECTOR OUTPUT MILLIVOLTS 500 400 300 100 20 16 12 4 0 0 4 08 12 1 6 GAS CONCENTRATION IN PPM 2 0 Figure C 1 Calibration Response Charts for 0 1 and 0 2 ppm _ 500 7 20 2 3 gt al al 400 16 a 5 o ee 300 12 fe E a 200 w ic a lt 100 0 2 4 6 8 GAS CONCENTRATION IN PPM 10 AMPLIFIER DETECTOR OUTPUT MILLIAMPS AMPLIFIER DETECTOR OUTPUT MILLIVOLTS 500 200 100 7 20 16 12 4 8 12 16 GAS CONCENTRATION IN PPM 20 AMPLIFIER DETECTOR OUTPUT MILLIAMPS AMPLIFIER DETECTOR OUTPUT MILLIAMPS Figure C 2 Calibration Response Charts for 0 10 and 0 20 ppm 71 0090 REV C 31 Diffusion Transmitter Operator s Manual SAINVITTIN LNdLNO YOL9A130 831411dWV a o y 20 50 40 30 20 10 GAS CONCENTRATION 500 o E 300 o a 100 SLIOAITIIN LNdLNO HOLIFL3W U3I4ITANV SANVITIIN LNdLNO HOL9313Q U3I4IIAWV o o N w 8 e a E 8 x 8 zZ N 9 is o E NL a lt x oc EN ES e fa Sz o e 20 5 2 x amp E N o 8 8 8 8 8 8 E 8 3 2 SLIOAITIIN LNdLNO HOLOILIC HIIAN ANY IN PPM
4. Figure C 3 Calibration Response Charts for 0 30 and 0 50 ppm J 20 SAINVITTIN LNdLNO HO L93 13Q U3141TdNV a e 500 o e e S amp SLTOAITTIN LNdLNO HOLIILIC HIIANTAINV SAINVITTIN LNdLNO HO 193 13Q U314ITdNV o N 2 100 500 o a 400 300 SLIOAITIIW LAd LNO HOLIILIC HIIANTAINV 100 300 400 500 GAS CONCENTRATION 200 100 60 80 100 GAS CONCENTRATION 40 20 IN PPM IN PPM Figure C 4 Calibration Response Charts for 0 100 and 0 500 ppm 71 0090 REV C 32 Appendix C 500 7 20 400 16 vi 20 9 300 x 12 200 7 8 AMPLIFIER DETECTOR OUTPUT MILLIVOLTS aS AMPLIFIER DETECTOR OUTPUT MILLIAMPS 100 4 4 0 5 10 15 20 25 30 GAS CONCENTRATION VOL Figure C 5 Calibration Response Charts for 0 30 by volume 71 0090 REV C 33 Diffusion Transmitter Operator s Manual 34 71 0090 REVC
5. at test jacks Diffusion 10 detection range 5 detection range Copper free aluminum 8 2 in 18 5 cm H x 4 9 in 12 4 cm W x 4 0 in 10 1 cm D 90 in less than 60 seconds except HCl amp HF 90 in less than 70 seconds HCI 90 in less than 90 seconds HF 3 5 lbs 1 6 kg Designed to comply with requirements for Class I Division 2 hazardous locations 12 to 28V DC 4 F 20 C to 113 F 45 C Manual this document Calibration kits gas cylinders 71 0090 REV C Diffusion Transmitter Operator s Manual 4 71 0090 REVC INSTALLATION Mounting the Transmitter Ww WARNING Perform all installation procedures in a fresh air environment known to be free of combustible and toxic gases and of normal oxygen content The transmitter is not in operation as a gas monitoring system until the start up procedure is complete wY CAUTION Mount the enclosure with the detector pointing down preferred or horizontal if vertical is not practical to the application 1 Select a mounting area that is representative of the monitoring environment Choose an area where the transmitter is not likely to be accidentally bumped or disturbed 2 Secure the enclosure to a vertical surface using 3 16 inch bolts or screws through the mounting lugs refer to Figure 2 1 4 0 in 10 1 cm gt 3 4 NPT gt Py of 4 4in 11 2cm 5 1 in 13 0 cm Ne
6. y 8 2 in 20 8 cm Ey I Ly J 3 0 in 7 7 cm 2X 0 270 ae F lt SIDE VIEW TOP VIEW Figure 2 1 Outline and Mounting Dimensions 71 0090 REV C 5 Diffusion Transmitter Operator s Manual Wiring the Transmitter Use a two conductor shielded cable or run the wiring within metal conduit to reduce Radio Frequency Interference RFI and Electromagnetic Interference EMI Use 18 AWG wire or larger The two way wire and receiver resistance must not exceed 200 ohms for 12 volts systems or 600 ohms for 24 volts systems Ww WARNING Make sure all power to the controller is turned off during all wiring procedures YN CAUTION Do not run transmitter and ac power wiring through the same conduit 1 Remove the enclosure cover 2 If you are using shielded cable screw a cable bushing into the top conduit hub of the enclosure then route the cable through the bushing Do not ground the shield at the enclosure If you are using metal conduit screw the end of the conduit directly into the top conduit hub of the enclosure 3 Confirm that the detector is plugged into the sensor connection at the amplifier 4 Guide a two conductor shielded cable or two wires in conduit through the top conduit hub of the enclosure and connect the wires to the amplifier terminal strip see Appendix B 5 Connect the wires to the receiver or controller terminal strip see Appendix B 6 71 0090 REV C Installation Mounting Lug DE _ 3
7. 1 mA in signal loop to correspond with the 20 9 oxygen present in clean air For ZERO AIR calculate the proper span setting for the analyzed oxygen content if other than 20 9 from the formula or from the chart in Appendix C of this manual then proceed as follows 1 If you can assure that the atmosphere surrounding the detector is free of contamination go directly to step 5 otherwise connect the flow regulator to a cylinder of certified ZERO AIR 71 0090 REV C 15 Diffusion Transmitter Operator s Manual SY NOTE The ZERO AIR cylinder is not included in the standard calibration kit as clean air is most often readily available to the detector by normal methods of ventilation It may be ordered separately 81 0076 and uses the same regulator 81 1003 as the nitrogen cylinder 2 Attach the flow regulator to the cylinder of ZERO AIR and the test cup to the detector 3 Set the multimeter to read in the range of 100 to 500 mV and insert the positive test probe into the white test jack on the amplifier and the negative probe into the blue test jack 4 Open the flow control knob on the regulator verify that the gauge shows a pressure greater than 0 and observe the reading on the multimeter 5 After the reading stabilizes normally 1 to 2 minutes confirm a reading of 379 mV or calculated value for cylinder oxygen content if different from 20 9 on the multimeter If necessary adjust the SPAN potentiometer on the ampli
8. 4 NPT Conduit Hub _ Test Jack _ White Factory set 9 not user adjustable Zero Potentiometer See Appendix B for Controller Hook Up Span Potentiometer Sensor Connection Detector Figure 2 2 Component Location 6 Ground the shielded cable or metal conduit at the controller receiver or power supply y CAUTION Always ground the cable or conduit at the controller and never at the transmitter 71 0090 REV C 7 Diffusion Transmitter Operator s Manual 8 71 0090 REVC START UP amp OPERATION Complete the following procedure to place the controller and the transmitter into normal operation Preparing for Start Up 1 Complete the mounting and wiring procedures described in the Installation chapter of this manual 2 Connect incoming power to the controller as described in the receiver or controller manual SY NOTE Allow the sensor to stabilize for 1 hour after power is introduced before calibrating Setting the Channel Parameters at the Controller When you install the transmitter set the parameters for that channel at the controller For instructions on setting the channel parameters at the controller see the receiver or controller manual 71 0090 REV C Diffusion Transmitter Operator s Manual Setting the Fresh Air Signal sy WARNING If you suspect the presence of target gas during the start up procedure use the calibration kit described in the calibration
9. SELLER WITHOUT SELLER S PRIOR WRITTEN APPROVAL OR ANY USE OF REPLACEMENT PARTS NOT SUPPLIED BY SELLER SHALL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED PRODUCTS THE OBLIGATIONS CREATED BY THIS WARRANTY STATEMENT TO REPAIR OR REPLACE A DEFECTIVE PRODUCT SHALL BE THE SOLE REMEDY OF BUYER IN THE EVENT OF A DEFECTIVE PRODUCT EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY STATEMENT SELLER DISCLAIMS ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED ORAL OR WRITTEN WITH RESPECT TO THE PRODUCTS INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE SELLER DOES NOT WARRANT THAT THE PRODUCTS ARE ERROR FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT Thermo Fisher Scientific TABLE OF CONTENTS Chapter 1 Introduction Overview san abs ads dar arts DECIDIO 2000 IA AA E T arget G ses oda prat a Lal Specifications s a nee pin Chapter 2 Installation Mounting the Transmitter LL Wiring the Transmitter 0 0 00 LL Chapter 3 Start Up amp Operation Preparing for Start Up 0 0 00 cece eee eee Setting the Channel Parameters at the Controller Setting the Fresh Air Signal ooo ooooooooocoo oo Chapter 4 Calibration Preparing for calibration 0 0 0 0 cee eee ee eee Calibrating the Detector 0 0 00005 Chapter 5 Maintenance Preventive Maintenance LL Troubl
10. chapter and the zero emission air cylinder to introduce fresh air to the detector and confirm an accurate zero setting span setting for oxygen monitoring systems 1 Confirm that the receiver controller or DC power source are on 2 Remove the enclosure cover Ww WARNING In locations classified as hazardous National Electric Code Article 500 and with power on the area must be certified gas free before you open the detector housing Consult prevailing national local and corporate requirements for certification y NOTE Some controllers have a feature that enables you to disable the alarm LEDs buzzer and relays during the calibration procedures response tests and so on Refer to the controller manual for information Make sure you re enable full alarm functionality after the calibration procedure is complete 3 Select the millivolt mV range on the multimeter Plug the positive multimeter lead into the white test jack plug the negative lead into the blue test jack 4 Confirm a reading of 100 mV toxic or 379 mV oxygen on the multimeter Adjust the potentiometer on the amplifier if necessary e Toxic Adjust ZERO pot until the multimeter reading is 100 mV e Oxygen Adjust SPAN pot until the multimeter reading is 379 mV 5 Remove the multimeter leads from the test jacks and secure the cover to the enclosure The transmitter is now in operation 10 71 0090 REV C Chapter 4 CALIBRAT
11. to respond after a few seconds 5 After the reading stabilizes normally 1 to 2 minutes confirm a reading of SPAN pot on the amplifier until the multimeter reads the value calculated at the beginning of this section or adjust the SPAN potentiometer on the amplifier so that it does so YY NOTE For Cl CIO F HF NO and O transmitters turn the span control counter clockwise to increase reading for all other gases turn 1t clockwise to increase reading CAUTION If the reading on the multimeter has not stabilized after 2 minutes see the Troubleshooting section of this manual for slow response 6 Turn off the gas flow by closing the flow control valve on the regulator remove the regulator from the gas cylinder and remove the test cup from the detector 7 Observe that the multimeter reading returns to 100 mV as the gas is replaced by diffusion of surrounding air If the reading has not recovered in 2 to 3 minutes confirm that there is no target gas present repeat the steps in Setting the Zero Signal then repeat this calibration procedure 8 Remove the multimeter test probes and screw the cover back on the enclosure The toxic gas transmitter is now in normal operation 71 0090 REV C Calibration Calibrating the Oxygen Level Detector SETTING THE OXYGEN ZERO READING 1 Attach the regulator to the cylinder of 100 nitrogen gas 2 Attach the test cup to the regulator outlet fitting 3 Slide the te
12. 10 Sensor nitric dioxide NO3 65 2431 11 Sensor chlorine dioxide C10 71 0090 Diffusion Transmitter Operator s Manual 81 0065 Cylinder CO in air 100 ppm 81 0076 71 0090 REV C Cylinder zero emission air 25 Diffusion Transmitter Operator s Manual Table A 1 Parts List Continued Part No Description 81 0078 Cylinder 100 nitrogen N 81 0151 Cylinder H S in N gt 25 ppm 81 0170 Cylinder SO gt in N 5 ppm 81 0175 Cylinder NO in N 25 ppm 81 0180 Cylinder NO in N gt 5 ppm 81 0190 Cylinder Cl in N 5 ppm 81 0191 Cylinder NH3 in air 25 ppm 81 0192 Cylinder HCN in N 10 ppm 81 0193 Cylinder PH3 in N gt 0 5 ppm 81 0194 Cylinder HCl in N7 10 ppm 81 1003 Regulator CO O 81 1051 01 Regulator toxic gases except Cl amp HCl 81 1062 Regulator Cl HCl 81 1121 Test cup toxic gas oxygen models 81 6412 01 Calibration kit HS 25 ppm 81 6412 02 Calibration kit Cl 5 ppm 81 6412 03 Calibration kit HCl 10 ppm 81 6412 04 Calibration kit HCN 10 ppm 81 6412 05 Calibration kit NH3 25 ppm 81 6412 06 Calibration kit PH3 0 5 ppm 81 6412 07 Calibration kit NO 25 ppm 81 6412 08 Calibration kit NO 5 ppm 81 6412 09 Calibration kit SO 5 ppm 81 6413 08 Calibration kit O 100 N gt 81 6413 09 Calibration kit C
13. 12 to 24V DC to system signal loop or polarity of power incorrect e Excessive resistance or open circuit in signal loop e Wiring error e Defective amplifier Suggested Response 1 Confirm that the supply voltage to the total signal loop is at least 12V DC and that all components are properly connected 2 Confirm that all devices in the signal loop are low impedance current not voltage measuring or actuated devices and that the total loop DC resistance is less than 200 ohms for 12V operation and less than 600 ohms for 24V operation y NOTE Some voltage operated devices may be converted to low current operation by shunting their input terminals with a low value resistor consult factory 3 Measure and record the voltage across the input terminals of each device in the loop assuring that the voltage across the transmitter is somewhere between 5 5 volts and the total supply voltage Any series device that has the full supply voltage across its input terminals either has an open circuit or is a voltage operated device and cannot be used in the current loop 4 If the total supply voltage appeared across the transmitter terminals when measured in step 3 either there is no other device in the loop or the transmitter itself is defective and must be replaced Fault Condition Symptoms e Output signal stays at 2 0 to 2 5 milliamps and cannot be set to 4 0 mA with ZERO pot Probable Cause e Missing or defective sens
14. ARLY THOSE CONCERNING START UP OPERATION CALIBRATION AND MAINTENANCE BE READ UNDERSTOOD AND FOLLOWED NOTATION CONVENTIONS Notices are used in this operator s manual to alert you to hazardous condi tions to person or instrument and to notify you of additional information This operator s manual uses the following notices sy WARNING Notifies you of potential danger that can result in personal injury or death N 4 CAUTION Notifies you of potential damage to equipment YY NOTE Notifies you of additional or critical information SERVICE LOCATIONS For additional assistance Environmental Instruments Division has service available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information 866 282 0430 Toll Free 508 520 0430 International Thermo Fisher Scientific Warranty Seller warrants that the Products will operate or perform substantially in conformance with Seller s published specifications and be free from defects in material and workmanship when subjected to normal proper and intended usage by properly trained personnel for the period of time set forth in the product documentation published specifications or package inserts If a period of time is not specified in Seller s product documentation published specifications or package inserts the warranty period shall be one 1 year from the date of shipment to Buyer for equipment and
15. Diffusion Transmitter Instruction Manual Rev C Part Number 71 0090 20Dec2007 2007 Thermo Fisher Scientific Inc All rights reserved Specifications terms and pricing are subject to change Not all products are available in all countries Please consult your local sales representative for details Thermo Fisher Scientific Air Quality Instruments 27 Forge Parkway Franklin MA 02038 1 508 520 0430 www thermo com agi Thermo Fisher Scientific WEEE Compliance This product is required to comply with the European Union s Waste Electrical amp Electronic Equipment WEEE Directive 2002 96 EC It is marked with the following symbol Thermo Fisher Scientific has contracted with one or more recycling disposal companies in each EU Member State and this product should be disposed of or recycled through them Further information on Thermo Fisher Scientific compliance with these Directives the recyclers in your country and information on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Directive are available at www thermo com WEEERoHS WEEE Compliance VVARNING Ve THIS INSTRUMENT IS DESIGNED TO DETECT ONE OR MORE OF THE FOLLOWING FLAMMABLE VAPORS OXYGEN CONTENT AND OR TOXIC GAS AND TO GIVE WARNING BEFORE THEY REACH HARMFUL CONDITIONS IN ORDER TO ENSURE THAT IT WILL WARN OF DANGEROUS CONCENTRATIONS IT IS ESSENTIAL THAT THE INSTRUCTIONS IN THIS MANUAL PARTICUL
16. ION This chapter describes the optional calibration kit used for calibrating the transmitter See Parts List in Appendix A of this manual for ordering information SY WARNING Accurate calibration of the transmitter is essential to ensure accurate readings of toxic gas concentrations Incorrect calibration can impair the performance of the transmitter and place you in unnecessary danger if hazardous conditions exist The calibration kit contains all of the equipment you need to introduce a calibration sample to the detector It includes the following components Storage Case safely stores the components of the calibration kit Cylinder contains a known concentration of target gas Regulator controls the flow of the sample from the cylinder to the detector Test Cup attaches to the detector and allows the calibrating sample to flow past the detector Tubing connects components of the calibration kit 71 0090 REV C 11 Diffusion Transmitter Operator s Manual Preparing for Calibration This section describes how to prepare the transmitter for calibration The procedure includes step by step instructions for preparing the calibration kit and the transmitter YY WARNING Calibrate the detector in a fresh air environment environment known to be free of toxic gases Calibrating the Detector This chapter describes how to prepare the gas cylinder set the clean air base line and gas response reading for the toxic gas
17. O 100 ppm 1 Appropriate also for fluorine F sensors 2 Appropriate also for arsine AsH3 diborane B H and silane SiH4 sensors 26 71 0090 REV C Appendix B EXTERNAL WIRING Appendix B shows the Remote Diffusion Transmitter external wiring instructions SafeTnet 100 SENSORS 8 SENSOR7 Z sensore D SD Z A Amplifier a 3 Diffusion Transmitter 2 ae 182 Z Figure B 1 SafeTnet 100 External Wiring User Furnished Power Supply Receiver Controller 12 24V DC or PLC DCS ETC n gt O Q MAX 200 ohms at 12V 600 ohms at 24V Amplifier Diffusion Transmitter FB D _p 4 20mA 10 Figure B 2 User furnished External Wiring 71 0090 REV C 27 Diffusion Transmitter Operator s Manual STN 2000 210 and 410 11 Uol IN 2 Be Y i Z 9 SHIELD 8 I2 Z IN 1 FB D 6 D 5 4 RESET Z 3 Amplifier GND Q o Diffusion Transmitter PWR com O 2 Ere oc O 1 TB2 Channel 1 11 2 ho IN2 FB D 9 Q s V SHIELD Z Z Z N1 Be
18. and oxygen transmitters Calculating the Calibration Gas Response Reading The 100 to 500 mV test signal at the test jack of the transmitter amplifier is used to calibrate the transmitter The following formula describes how to calculate the output test signal as a function of the gas concentration Test signal gas concentration full scale range x 400 mV 100 mV For example if you are using a gas cylinder of 5 ppm chlorine to calibrate a transmitter whose full scale range is 0 10 ppm 65 ppm conc 10 ppm full scale conc x 400 mV range 100 mV offset 5 10 x 400 mV 100 mV 300 mV gas signal setting on multimeter For oxygen the measurement range is 0 30 by volume and the recommended calibration gas is clean air which contains 20 9 oxygen so the calculation is 20 9 30 x 400 100 378 7 or 379 mV For user convenience graphs of signal versus gas concentration are shown in Appendix C of this manual for each gas range 12 71 0090 REVC Calibration Preparing the Gas Cylinder YY NOTE When performing the following steps use gas samples of known concentration Cylinders of known concentration are available from Thermo GasTech see Parts List in Appendix A Specify gas and concentration when ordering gas cylinders 1 Verify the regulator flow control valve is closed then carefully screw the regulator onto the cylinder 2 Verify that all tubing connections are tight and se
19. can zero the detector right away but for best results let the detector stabilize for 1 hour before calibrating Returning for Repair Before you remove the transmitter from the monitoring area first contact a Thermo GasTech representative The Thermo GasTech representative may guide you through certain diagnostic procedures with the transmitter in place If you cannot correct the malfunction the representative will assist you in returning the transmitter for repair 24 71 0090 REV C Appendix A PARTS LIST Table A 1 lists part numbers for the Diffusion Transmitter replacement parts and accessories Table A 1 Parts List 25 0104 Housing Cover 57 7210 Amplifier AsH B Hg CO HCN HyS NH3 O PH SiH SO 57 7210 01 Amplifier Cl CIO Fz HF NO Oz 57 7210 02 Amplifier HCl NO 65 1061 Sensor oxygen O 65 2420 02 Sensor sulfur dioxide SO 65 2425 01 Sensor carbon monoxide CO 65 2425 02 Sensor hydrogen sulfide HS 65 2431 01 Sensor chlorine Cl fluorine F3 65 2431 02 Sensor hydrogen cyanide HCN 65 2431 03 Sensor nitric oxide NO 65 2431 04 Sensor hydrogen chloride HCl 65 2431 05 Sensor hydrogen fluoride HF 65 2431 07 Sensor ammonia NH3 65 2431 08 Sensor arsine AsH3 diborane B gt Hg phosphine PH3 silane SiH4 65 2431 09 Sensor ozone 03 65 2431
20. cure 3 Slide the test cup over the end of the detector then secure the cup to the detector Calibrating the Toxic Gas Detector 1 Verify the absence of toxic gas or any atmosphere other than clean air at the calibration site by ventilation with clean air or by testing with a portable gas analyzer 2 Remove the enclosure cover 3 Set the multimeter to 0 500 DC mV range Plug the positive multimeter lead into the white test jack and the negative lead into the blue test jack of the amplifier 4 Confirm that the multimeter shows a reading of 100 mV If the reading is other than 100 mV adjust the ZERO potentiometer on the amplifier so that it does so Leave the multimeter probes connected to the test jacks for setting the toxic gas response Y y NOTE For Ch CIO FE HE NO and O transmitters turn the zero control counter clockwise to increase reading for all other gases turn it clockwise to increase reading 71 0090 REV C 13 Diffusion Transmitter Operator s Manual SETTING THE TOXIC GAS RESPONSE READING 1 Set the multimeter to 0 500 DC mV range Plug the positive multimeter lead into white test jack and the negative lead into the blue test jack 2 Attach the flow regulator to the gas cylinder and assure that the gauge shows pressure greater then 0 3 Attach the test cup to the detector and secure it with the thumbscrew 4 Open the flow control valve and observe that the multimeter reading begins
21. er to stabilize if the spring is removed before start up 6 Plug the sensor into the PC board in the detector housing 7 Screw the bottom half of the detector housing onto the top half and guide the connector of the replacement detector through the conduit hub of the enclosure and screw the detector into the enclosure 8 Plug the detector into the amplifier 9 Restore power at the power source 10 Perform the calibration procedure described in the Calibration chapter of this manual You can zero the detector right away but for best results let the detector stabilize for 1 hour before calibrating 71 0090 REV C 23 Diffusion Transmitter Operator s Manual Replacing the Amplifier 1 Turn off all incoming power at the power source 2 Unscrew and remove the cover from the enclosure 3 Disconnect the detector from the amplifier 4 Disconnect the wires from the remote amplifier terminal strip Leave the wires connected to the controller terminal strip 5 Remove the two screws that secure the amplifier to the housing and remove amplifier 6 Place the new amplifier in the enclosure so the holes in the enclosure line up 7 Secure the amplifier to the enclosure 8 Connect the wires from the controller terminal strip to the amplifier terminal strip 9 Connect the detector plug to the amplifier socket 10 Turn the power on 11 Perform the calibration procedure described in the Calibration chapter of this manual You
22. eshooting 00 eee eee eee eee ee ees Replacing the Sensor 0 0 0 ee ee eee eee Replacing the Detector 0 0 0 0 0 LL Replacing the Amplifier 0 0 00 cece eee eee ee 71 0090 REV C vii Diffusion Transmitter Operator s Manual Appendix A P rts List 222 ci a al Appendix B External Wiring Instructions Appendix C Calibration Response Charts viii 71 0090 REV C INTRODUCTION Overview The Diffusion Transmitter is a series of oxygen and toxic gas transmitters Description The Diffusion Transmitter assembly is comprised of a gas sensor a temperature compensation board and an amplifier transmitter electronic assembly all enclosed in a weather resistant aluminum enclosure 71 0090 REV C Diffusion Transmitter Operator s Manual Target Gases Table 1 1 lists the target gas and detection ranges for the Diffusion Transmitter Table 1 1 Target Gases and Detection Ranges 2 71 0090 REVC Specification Introduction Table 1 2 lists the Diffusion Transmitter performance electrical and environmental specifications Table 1 2 Specifications Amplifier Outputs Sampling Method Accuracy Repeatability Housing Dimensions Response Time Weight Area Classification Power Source Temperature Range Standard Accessories Optional Accessories 4 to 20 mA analog signal to controller 100 to 500 mV analog test signals
23. fier until the multimeter reads correctly 6 If you used ZERO AIR from a cylinder and test cup remove the test cup from the detector and observe that the multimeter reading returns to a reading of 379 mV the clean air reading Complete recovery may take up to 2 minutes 7 Remove the multimeter probes from the amplifier test jacks and reinstall the enclosure cover The oxygen transmitter is now in normal operation 16 71 0090 REV C MAINTENANCE Ww WARNING Perform all maintenance activities in a non hazardous environment Preventive Maintenance This schedule describes daily monthly and quarterly procedures to ensure the performance and durability of the transmitter Daily Confirm that the receiver or controller is on and functioning properly Monthly Sy NOTE Some controllers have a feature that enables you to disable the alarm LEDs buzzer and relays during the calibration procedures response tests and so on Refer to the controller manual for information Be sure you re enable full alarm functionality after the calibration or response test procedure is complete To test the visual audible and relay alarm indications during the response test use a concentration of gas greater than the alarm setpoints If you have evacuation alarms or alarms that are forwarded to the fire department be sure to notify the appropriate people before you test the alarm 71 0090 REVC 17 Diffusion Transmitter Operator s Man
24. ninety 90 days for all other products the Warranty Period Seller agrees during the Warranty Period to repair or replace at Seller s option defective Products so as to cause the same to operate in substantial conformance with said published specifications provided that a Buyer shall promptly notify Seller in writing upon the discovery of any defect which notice shall include the product model and serial number if applicable and details of the warranty claim b after Seller s review Seller will provide Buyer with service data and or a Return Material Authorization RMA which may include biohazard decontamination procedures and other product specific handling instructions and c then if applicable Buyer may return the defective Products to Seller with all costs prepaid by Buyer Replacement parts may be new or refurbished at the election of Seller All replaced parts shall become the property of Seller Shipment to Buyer of repaired or replacement Products shall be made in accordance with the Delivery provisions of the Seller s Terms and Conditions of Sale Consumables including but not limited to lamps fuses batteries bulbs and other such expendable items are expressly excluded from the warranty under this warranty Notwithstanding the foregoing Products supplied by Seller that are obtained by Seller from an original manufacturer or third party supplier are not warranted by Seller but Seller agrees to assign to Bu
25. or e Detector cable or sensor pins not plugged in e Jumper J2 on amplifier in wrong position 71 0090 REV C 19 Diffusion Transmitter Operator s Manual Suggested Response 1 Unscrew the cap of the detector housing and verify that the sensor is installed and is the proper sensor for the intended target gas 2 Unplug the sensor and inspect its contact pins and the detector housing sockets to assure that they are not bent or broken Carefully re plug the sensor into socket pins of temperature compensation board 3 Be sure that the shorting jumper plug J2 on the front of the amplifier is in the correct position for the target gas and matching detector Position F for ammonia arsine carbon monoxide diborane hydrogen chloride hydrogen cyanide hydrogen sulfide nitric oxide oxygen phosphine silane and sulfur dioxide e Position E for chlorine chlorine dioxide fluorine hydrogen fluoride nitrogen dioxide and ozone 20 71 0090 REV C Maintenance Difficult or Unable to Calibrate Slow or No Response Symptoms e Unable to accurately calibrate the transmitter e Slow or no response to calibration gas during monthly response test e Transmitter requires frequent calibration y NOTE Under normal conditions the transmitter requires calibration approximately once every 3 months Some applications may require a more frequent calibration schedule Probable Cause e Sample in gas cylinder is lo
26. st cup over the detector and secure it in place with the thumbscrew 4 Open the flow control knob on the regulator 5 Verify that the regulator gauge shows a pressure greater than 0 6 Set the multimeter to read in the range of 100 to 500 DC mV insert the positive test probe into the white test jack on the amplifier and the negative probe into the blue test jack 7 Observe the millivolt reading on the multimeter which should approach 100 mV as the zero gas nitrogen enters the detector and displaces the residual atmosphere 8 When the multimeter reading has stabilized it should indicate 100 mV If not set to read 100 mV using the ZERO potentiometer 9 Close the flow control knob and remove the regulator from the gas cylinder 10 Remove the test cup from the detector and observe that the multimeter mV reading returns to a reading of 379 mV the clean air reading If the reading is other than 379 mV go to the following section Setting the Oxygen Response Reading 11 Leave the multimeter leads connected to the amplifier test jacks SETTING THE OxYGEN RESPONSE READING For calibration of oxygen transmitters the recommended calibration gas is clean fresh air if its purity can be assured by ventilation or by test with a portable oxygen indicator If this is impractical a cylinder of certified ZERO AIR should be used For clean fresh air the calibration setting should be 379 mV at the test jacks equivalent to 15
27. ual 1 Confirm that the controller display reading is approximately 0 ppm toxic and 21 oxygen If not set the fresh air signal at the amplifier to 100 mV toxic or 379 mV oxygen as described in the Start Up amp Operation chapter of this manual 2 Assemble the calibration kit and introduce the gas to the detector as described in the Calibration chapter of this manual 3 After the reading stabilizes normally 1 to 2 minutes confirm that the display reading for the controller responds to the gas sample as the sample is introduced to the detector and is within 10 of the desired reading If not perform the calibration procedure as described in the Calibration chapter of this manual 4 Confirm that the receiver or controller alarm functions if any respond appropriately 5 Turn off the calibration gas Disassemble and store the calibration kit as described in the Calibration chapter of this manual Quarterly vw CAUTION Calibrate the transmitter at least once every 3 months Some applications may require a more frequent calibration schedule Perform the calibration procedure as described in the Calibration chapter of this manual Troubleshooting This section describes symptoms probable causes and suggested responses for problems you may encounter with the transmitter Signal Loop Failure Symptoms e No signal at receiver or controller 18 71 0090 REVC Maintenance Probable Causes e Low or no power
28. w exhausted or out dated e Sensor is outdated or is reaching the end of its useful life Suggested Response 1 Make sure the calibration cylinder has an adequate supply of fresh gas 2 Replace the plug in senor if it is outdated or shows signs of leakage 3 If calibration difficulties continue contact Thermo GasTech for further instruction Suspect Readings Symptom e Gas reading appears inaccurate or is suspect Probable Cause e Interfering gases Suggested Response 1 Investigate the possibility of actual presence of target gas or other reactive gases which could possibly impersonate target gas 2 If the suspect readings continue contact Thermo GasTech for further instruction 71 0090 REV C 21 Diffusion Transmitter Operator s Manual Replacing the Sensor You can replace the sensor without replacing the entire detector assembly In most cases the plug in sensor will need replacement rather than the entire detector assembly 22 v 1 Turn off all incoming power at the power source 2 Unscrew the bottom half of the detector housing 3 Unplug the sensor from the PC board 4 Remove the replacement sensor from its container and if installed remove the spring placed between the pins marked R reference and S sensing CAUTION Do not remove the spring until you are ready to perform the start up procedure The detector will take longer to stabilize if the spring is removed before start up
29. yer any warranty rights in such Product that Seller may have from the original manufacturer or third party supplier to the extent such assignment is allowed by such original manufacturer or third party supplier In no event shall Seller have any obligation to make repairs replacements or corrections required in whole or in part as the result of i normal wear and tear ii accident disaster or event of force majeure iii misuse fault or negligence of or by Buyer iv use of the Products in a manner for which they were not designed v causes external to the Products such as but not limited to power failure or electrical power surges vi improper storage and handling of the Products or vii use of the Products in combination with equipment or software not supplied by Seller If Seller determines that Products for which Buyer has requested warranty services are not Warranty Warranty covered by the warranty hereunder Buyer shall pay or reimburse Seller for all costs of investigating and responding to such request at Seller s then prevailing time and materials rates If Seller provides repair services or replacement parts that are not covered by the warranty provided in this warranty Buyer shall pay Seller therefor at Seller s then prevailing time and materials rates ANY INSTALLATION MAINTENANCE REPAIR SERVICE RELOCATION OR ALTERATION TO OR OF OR OTHER TAMPERING WITH THE PRODUCTS PERFORMED BY ANY PERSON OR ENTITY OTHER THAN
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