HLM-2000-TX Gas Transmitter User Manual
Contents
1. R WIRE COLOURS lt lt AOA une ZN TRANSMITTER WARNING CABLE SHIELD MUST N USED AS A CONDUCTOR 1 21 05 09 Updated sensor connection wire colour relation REV DATE DISCRIPTION CHK D APP D REVISIONS ARJAY PROJECT ARIA Y NEERING ENGINEERING LIMIT hi DATE TITLE STATUS D M Y prawn V H 03 06 08 HLM 2000 TX CHECKED Field Wiring Connections and APPROVED Component Detail REF DWGS DWG NO SHT REV WIE 20010385 1 1 MAINTENANCE AND CALIBRATION Your ARJA Y ENMET gas detector is the state of the art in gas detection but like any other part of your ventilation system 1t requires periodic maintenance and calibration There are various sensor technologies that may be used in your Arjay gas monitor including solid state MOS Electrochemical Infrared and Pellister Pair Hot wire These have a normal operating life of 3 to 5 years under ambient conditions You should consider a preventive maintenance schedule whereby you test your system on a periodic basis to ensure its proper calibration and oper2. 3 3 a a V X lt 3 B3 7 5 MOUNTING SURFACE bo ia b A s O O s s EN Kt uut MXNMENNMNNMENN TRANSMIT TER NMNNNANNENNNR ANNAN AN MXNNMENNMNNMENN ANNA ANN XNMENNMNNMENN NNNNNSNNENNESR ANNAN AN NN ARANA NN ANN AAA Ad ANN RAS AN XNMENNMNNMENN ANNA M ENNMNNMENN lt X 937 5 3 7 G ROB L Figure 2 1 Mounting the Sensor Transmitter Unit Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 2 2 CABLE SELECTION AND WIRING Connection should be made using 2 conductor shielded cable For best signal transmission and maximum noise rejection run the cable through steel conduit cable must be grounded at the monitor or power supply Supply voltage can be measured at the transmitter connections at the supply source For basic cable selection between the source and transmitter using a 250 ohm load resistance use Table 0 1 Cable Selection Guide Table 0 1 Cable Selection Guide 1000 1500 NN EKON DISTANCE IN 305 457 762 1158 FEET AND 15000 metres 24 VDC 4572 23000 7010 38000 11582 57000 17373
3. Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 2 INSTALLATION This section discusses topics relating to the proper installation of the HLM 2000 TX unit 2 1 LOCATION AND MOUNTING Mount the sensor transmitter unit on a solid non vibrating surface or structure in an area where the local concentration of gas is unaffected by the presence of ventilation systems and away from sources of interference gases NOTE MOUNTING ARRANGEMENT OF THE HOUSING DEPENDS ON LOCATION AND MOUNTING SURFACE MOUNTING HARDWARE IS NOT SUPPLIED Oo E 7 7 a V X 3 3 a a MOUNTING SCREWS 2 V X 3 3 3 a L L 9 V X 3 3 37 3 a a ua u 9 7 X 37 37 a a LOB V X 3
4. 1 905 829 2418 ARJAY ENGINEERING LTD Y 150 90012008 A Telefax 1 905 829 4701 2851 Brighton Rd E Quai Management systems N America Toll 800 387 9487 M www ca sgs com Internet www arjayEng com Oakville Ontario Canada L6H 6C9 Ka E Mail arjay arjayEng com
5. 9487 Systeme de Qualit www ca sgs com Internet www arjayEng com Oakville Ontario Canada L6H 6C9 SS ee E Mail arjay arjayEng com ARJAY ARJAY ENGINEERING LTD GUARANTEE We hereby guarantee this instrument to be free from defects in workmanship and materials and if found defective in workmanship or materials upon being returned to our factory prepaid within one year from date of purchase it will be repaired or replaced at factory without charge However if upon being returned and after inspection there is evidence that the instrument has been subjected to tampering careless handling improper or faulty application or installation the above guarantee shall not be applicable and we shall have the right in any such case to make a charge to cover the cost of repairs servicing and transportation expense The undersigned assumes and shall have no liability for consequential damages resulting from the use or misuse of the instrument The foregoing guarantee is in lieu of all other guarantees or warranties expressed or implied and all other obligations or liabilities contractual or otherwise either to the original purchaser of said instrument or to any other person whomever BY ARJAY ENGINEERING LTD For service call ARJAY Engineering Ltd directly Canada 905 829 2418 North American Toll Free 1 800 387 9487 Fax 905 829 4701 Internet www arjayeng com E mail arjay arjayeng com Telephone
6. and Wiring Procedure 15 Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 5 ADDENDUM TO HLM 2000 TX FOR OXYGEN ONLY This HLM 2000 TX 2 wire sensor transmitter with external electro chemical sensors has been modified and the following information replaces the terminal block amp sensor wiring of Figures 2 3 2 4 3 1 amp 4 1 The sensor transmitter shows that the three wires changed to two wires for OXYGEN SENSOR ONLY Terminal block amp sensor wiring configuration are as shown below OUTPUT SENSOR TERMINAL BLOCK TRANSMITTER SENSOR WIRING o RED C BLACK OXYGEN SENSOR Figure 5 1 Transmitter with oxygen sensor wiring layout ENS 1 50 ES a FEED FR NI VIE SI VIE fa AE J gt THRU HUBS ALTE qp FILTERED 2 WIRE SHIELDED CABLE B W 12 30 VDC SUPPLET istance BLACK gt Y lt DU COMPUTER JATALUGGER or NUN AMC MONITOR NECTILINS
7. 4 2 VERIEIGATION OF OPERA TION 14 4 3 SENSOR REPLACEMENT cas A A tes 14 5 ADDENDUM TO HLM 2000 TX FOR OXYGEN 00 16 Figure 1 1 Transmitter HOUSING ODHUOFS isicing dSap a aai 5 Figure 2 1 Mounting the Sensor Transmitter Unit 6 Figure 22 Cable Selection Graph usi ia 7 Figure 2 3 Transmitter to Monitor Wiring 0 9 Figure 2 4 Interfacing to a Computer Datalogger or Non Arjay Monitor 10 Figure 3 1 Calibration Verification set up Procedure 13 Figure 4 1 Sensor Replacement and Wiring Procedure 15 Figure 5 1 Transmitter with oxygen sensor wiring 0 16 Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 WARRANTY The HLM 2000 TX transmitters are warranted against defects in material and workmanship for a period of two years from date of delivery for sensor see 1 1 1 Sensor Transmitter Specifications During the warranty period Arjay Engineering will repair or replace components that prove to be defective in the opinion of Arja
8. Datalogger or Non Arjay Monitor between the transmitter s negative output terminal and the negative or common of the power supply Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 2 WIRE SHIELDED CABLE WHITE FILTERED 12 30 VDC SUPPLY Lo LOAD RESISTANCE FOR VOLTAGE MEASUREMENT COMPUTER DATALOGGER OR NON AMC MONITOR TRANSMITTER CABLE SHIELD MUST SENSOR NOT BE USED AS A CONDUCTOR Figure 2 4 Interfacing to a Computer Datalogger or Non Arjay Monitor 10 Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 3 OPERATION AND CALIBRATION This section covers instructions for the proper operation and calibration of the HLM 2000 TX units The operation principles are described in further detail followed by different types of periodic adjustments that might be required throughout the lifetime of the equipment 3 1 OPERATION The HLM 2000 TX sensor transmitter unit is factory calibrated for the gas listed in Product Information pg vi at the beginning of this manual The unit should not need recalibration when first installed and powered up but a test for correct operation is recommended after a stabilization period of 10 minutes In general after the stabilization period the transmitter should be sending in zero gas a signal of approximately 4 mA to the monitor or controller However there are a few situations where a slightly higher or l
9. For applications not covered by the above chart an example is shown below for selecting the right cable using the graph in Figure 2 2 Cable Selection Graph and the following formulas NOTE SOME NON ARJAY EQUIPMENT MAY HAVE THE LOAD RESISTANCE BUILT IN Safe Region Linear Loop Resistance including load resistance 8 10 12 14 16 18 20 22 24 26 28 30 Supply Voltage volts Figure 2 2 Cable Selection Graph Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 Example Refer to Figure 2 2 Cable Selection Graph Known Data Obtained from measurements ratings or specifications xol S 17 VDC Load 165 5 66 180 onms WIFE UJE 20 AWG Cable Length 1 Ohm resistance 43 6 ft 13 3 m typical Calculations on the Graph Using the power supply voltage as a reference Maximum Resistance MR Load 165 5 66 LR Formula 1 To determine remaining safe loop resistance Maximum Resistance 518 Ohms Load Resistance 180 Ohms Remaining Resistance 338 Ohms Formula 2 To determine maximum safe cable length allowed Remaining Resistance 338 Ohms Cable Length for 1 Ohm x 43 6 feet Maximum S
10. HLM 2000 TX Gas Transmitter User Manual Technical Support Continental North America Toll Free 1 800 387 9487 Ph 1 905 829 2418 Fx 1 905 829 4701 A Product of Arjay Engineering Ltd Oakville Ontario Canada www ArjayEng com www EnmetGasDetection com Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 TABLE OF CONTENTS Section Title Page WARRANTS cae laica 2 CAB o a 2 MODIFICATIONS AND SUBSTITUTIONS 222 2 FRODUGTRETUAN M M HX 2 PRODDOTANEGORMATIOBN i titius oed etus odia 3 1 PRODUCT DESCRIPTION sionista i 4 1 1 GENERAL DESORIPTION it a 4 1 1 1 Sensor SPECIICAUOMNS Ad 4 1 1 2 AAA dst etae den eiat beum dudes 4 2 INSTALLATION c c 6 2 1 MOGATION AND MOUNTING eutanasia inr uso cialis 6 2 2 CABLE SELECTION AND WIRING ccccccccnnnnocccnnnncccccocccnnnccononcnacncnonononononanennnns 7 2 2 1 Transmitter to Monitor Wiring sees 8 2 2 2 Interfacing to computer datalogger or non Arjay monitor 9 3 OPERATION AND CALIBRATION haie geom a oti eds 11 3 1 OPERATION scsi lola oline ire 11 3 2 CALIBRATION ccs lidia cacon cales 11 3 2 1 EQUIBMENtTr QUISAS 12 3 2 2 Transmitter calibration verification set up procedure 12 3 2 9 JAdjustmellls 12 4 PREVENTATIVE MAINTENAN GE Ii eae bli tuat derat niu dde 14 4 1 cn ee ere eee ee eee eee 14
11. ING ELECTRICALLY OPERATED EQUIPMENT NEAR GASOLINE OR GASOLINE VAPOURS MAY RESULT IN FIRE OR EXPLOSION CAUSING PERSONAL INJURY AND PROPERTY DAMAGE CHECK TO ASSURE THE WORKING AREA IS FREE FROM SUCH HAZARDS AND USE PROPER PRECAUTIONS Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 PRODUCT INFORMATION Sensor Transmitter Sensor Transmitter Unit Order Number Transmitter Part Number Transmitter Serial Number Sensor Part Number Sensor Serial Number Power Supply Requirement 12 to 30 VDC O 20 mA Sensor Warranty Factory Calibration Gas Type Zero Gas at 4 mA Signal Gas Concentration at 20 mA Signal NOTE ALL ARJAY MONITORING SYSTEMS MUST BE INSTALLED AND MAINTAINED ACCORDING TO INSTRUCTIONS TO ENSURE PROPER OPERATION ONLY QUALIFIED TECHNICIANS SHOULD INSTALL AND MAINTAIN THE EQUIPMENT Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 1 PRODUCT DESCRIPTION In this section a general product description of the HLM 2000 TX unit is given followed by sensor specification listings and various enclosure housing options 1 1 GENERAL DESCRIPTION The HLM 2000 TX sensor transmitter unit is designed to provide continuous reliable surveillance of surrounding air for traces of a specific hazardous gas es listed in the Factory Calibration section on page vi This unit provides a 4 to 20 mA variable current signal which is proportional to the gas concentration detected Each sensor transmitter unit is factory calibra
12. M 2000 TX HLM 2000 TX UM11 doc Rev 1 1 Span When the sensor is exposed to the calibration gas sample adjust the span trimmer on the transmitter to set the output current proportional to the gas concentration applied or the appropriate reading on the display DIGITAL MULTIMETER ADJUSTMENTS INSERT PLUG INTO CAL JACK REMOTE CALIBRATION ns TRANSMITTER Figure 3 1 Calibration Verification set up Procedure 13 Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 4 PREVENTATIVE MAINTENANCE This section covers topics related to the maintenance of the HLM 2000 TX units A general description of maintenance to be carried out is followed by a verification of operation and then details about the sensor replacement 4 1 GENERAL The sensor transmitter unit should be brushed or wiped clean once a year or more of any dust or dirt that settles on it depending on the accumulation The unit SHOULD NOT be submerged or placed under conditions where water or other liquids would be able to enter the transmitter 4 2 VERIFICATION OF OPERATION To verify the operation of the sensor transmitter unit make sure that it is still responding to gas This test should be performed every 2 months but for more demanding applications verification should be performed on a weekly basis 43 SENSOR REPLACEMENT CAUTION TURN OFF POWER SUPPLY BEFORE ATTEMPTING THE FOLLOWING Signal from the sensor will be greatly reduced when its rep
13. RING AS TO THE RECOMMENDED CALIBRATION GAS CONCENTRATION FOR THE APPLICATION OR OTHER QUESTIONS For some exotic gases calibration standards needed for field calibration are not readily available Arjay Engineering offers the following options 1 pre calibrated sensor transmitters to replace expired units 2 factory installation and calibration of new sensors in returned transmitters 3 replacement sensors supplied with a pre calibrated electrical output For all above options please contact the factory for details 11 Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 3 2 1 Equipment required 1 Digital Multi meter 2 Remote Calibration Lead provided with the transmitter 3 Trimmer Adjustment Tool or miniature screwdriver 4 Calibration gas es 3 2 2 Transmitter calibration verification set up procedure NOTE WHEN APPLYING GAS A FLOW RATE OF 0 5 TO 1 LITRE PER MINUTE IS RECOMMENDED The calibration procedure may cause the monitoring equipment to give a false alarm therefore appropriate precautions should be taken Instructions on introducing the gas sample are included with the calibration kit or available separately depending on type of gas or application Refer to Figure 3 1 Calibration Verification set up Procedure for the following procedure Remove cover from transmitter housing Plug in standard test leads fully into jacks on multi meter Switch ON multi meter and select DC volts range to read grea
14. afe Cable Length 14 736 feet NOTE IF MAXIMUM SAFE CABLE LENGTH IS INSUFFICIENT INCREASE THE POWER SUPPLY VOLTAGE AND OR REDUCE THE LOAD RESISTANCE 2 2 1 Transmitter to Monitor Wiring The transmitter output terminals connect to the SIG terminals on a channel terminal block of the monitor one transmitter per channel as shown in Figure 2 3 Transmitter to Monitor Wiring Layout Each transmitter MUST BE CONNECTED TO ITS CORRESPONDING CHANNEL to retain factory calibration of the trip points Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 CONNECTIONS TO TERMINAL BLOCK IN MONITOR OUTPUT TERMINAL 7 BLOCK SENSOR TERMINAL BLOCK TRANSMITTER CABLE SHIELD MUST NOT BE USED AS A CONDUCTOR Figure 2 3 Transmitter to Monitor Wiring Layout 2 2 2 Interfacing to computer datalogger or non Arjay monitor All Arjay sensor transmitters can be connected to computers or dataloggers through analog to digital converters or to non Arjay monitors The transmitter output terminals connect to a filtered 12 to 30 VDC power supply through field wiring see Figure 2 4 Interfacing to a Computer Datalogger or Non Arjay Monitor The signal output from the transmitter is a 4 to 20 milliamp DC current This signal can be measured or recorded anywhere in the supply loop if required Alternatively if a voltage measurement is needed a resistor can be connected see Figure 2 4 Interfacing to a Computer
15. ation For solid state MOS sensors we recommend calibration every 3 to 4 months for a typical garage application For Electrochemical sensors we recommend calibration every 6 months for a typical garage application Pellister Pair we recommend every 3 to 4 months and Infrared we recommend every 6 months For applications that are more sensitive or where internal policies exist a higher frequency of calibration may be required This is a simple procedure which will indicate any problems with your system A test and calibration kit may be purchased from ARJAY ENGINEERING for this purpose Parts are also readily available from our facility MAINTENANCE CONTRACT Alternatively you may wish to consider a Maintenance Contract with ARJAY ENGINEERING whereby one of our service technicians comes to your site and checks out the unit for proper calibration and operation on a regularly scheduled basis This is done on a flat per annum fee All parts are extra Typical target gases are included however exotic or specialty gases may have a surcharge If you wish us to quote a Maintenance Contract fill in the section below and return to our office COMPANY ADDRESS CONTACT PERSON EMAIL MODEL AND SERIAL 2 Fax to address below or e mail to arjay Oarjayeng com Telephone 1 905 829 2418 ARJAY ENGINEERING LTD fe sosoorzo08 Y Telefax 1 905 829 4701 2851 Brighton Rd Quality Management Systems IN America Toll 800 387
16. lacement is required The sensor should be replaced when it no longer responds to the presence of gas or has an unstable zero signal When the sensor needs replacing re order the Part Number listed in Product Information pg vi When sensors are shipped some sensor leads may be shorted together This is done to provide rapid stabilization of the sensor signal after installation To wire the sensor for correct operation first separate cut apart the shorted leads if any then connect the RED lead to the R terminal then BLACK to S and the YELLOW to C of the sensor terminal block on the transmitter See Figure 4 1 Sensor Replacement and Wiring Procedure for sensor replacement and wiring procedure NOTE ALLOW 10 MINUTES FOR THE NEW SENSOR TO STABLILIZE BEFORE RECALIBRATION THEN FOLLOW THE INSTRUCTIONS IN CALIBRATION SECTION 3 2 OF THIS MANUAL mb D Model HLM 2000 TX HLM 2000 TX UM11 doc Rev 1 1 TRANSMIT TER STEP f UNSCREW SENSOR WIRING FROM TERMINAL BLOCK STEP 2 UNSCREW SENSOR ASSEMBLY FROM SENSOR THE TRANSMITTER STEP 3 THREAD A NEW SENSOR ASSEMBLY ONTO THE HUB OF THE TRANSMITTER HOUSING STEP 4 SENSORS MAY BE SHIPPED WITH LEADS SHORTED TOGETHER FIRST SEPARATE cut apart THESE LEADS THEN CONNECT THE SENSOR LEADS TO THE SENSOR TERMINAL BLOCK IN THE TRANSMITTER AS LISTED BELOW SENSOR WIRING R RED S BLACK C YELLOW STEP 5 RE CALIBRATE Figure 4 1 Sensor Replacement
17. ower than normal signal may be noticed In many facilities there are residual background gases including the gas being detected in the air at all times These can cause for minor signal variations include extremes in temperature In the case of large signal variations in a clean air environment check for an installation problem or the possibility of an interference gas being present Although the electrochemical sensors are very selective there are some interference gases which can cause a response from the sensor These gases are listed on the detailed Specification sheet pertaining to the sensor in use 3 2 CALIBRATION The transmitter is equipped with a remote calibration feature allowing one man calibration at the transmitter location The transmitter output is measured using a plug in type Remote Calibration Lead p n 2900 01 designed to be adaptable to most multi meters Zero and Span adjustments are made at the transmitter Recalibration is necessary when replacing the sensor Verification of calibration should be done at least once every 6 months for safety reasons and for highly demanding applications monthly verification is recommended Factory on site calibration services customer training and or calibration kits can be provided Specify the sensor transmitter type and gas when requesting any of the above CAUTION ONLY QUALIFIED PERSONNEL SHOULD PERFORM THE ACTUAL CALIBRATION USERS ARE ADVISED TO CONSULT ARJAY ENGINEE
18. ted and is ready for field installation and operation 1 1 1 Sensor Transmitter Specifications Sensor Type Electrochemical cell Response Time Better than step change seconds Drift Less than offull scale per_ Sensor Signal Output Linear to the concentration of gas Operating Temperature Range Cto C Fto 9 F Humidity to_ 9e RH non condensing Expected Sensor Life Greater than year s Note TURN OFF POWER SUPPLY BEFORE REMOVING OR REPLACING THE TRANSMITTER OR SENSOR 1 1 2 Housing Options The HLM 2000 TX sensor transmitter units are available in the housings shown in Figure 1 1 Transmitter Housing Options The explosion proof transmitter housing has a corrosion resistant finish and is rated explosion proof for Class 1 Groups B C D locations The sensors are also available as standard or explosion proof Model HLM 2000 TX HLM 2000 TX UM11 doc PVC HOUSING Rectangular PVC with cover plate held by four screws Not for use in combustible areas and not weather proof PVC HOUSING Width 2 9 Height 2 25 Length 6 Hub Size 34 NPT EXPLOSION PROOF HOUSING Round housings with screw on covers Weatherproof and explosion proof see rating listed in section 0 B C D HOUSING Width 4 9 Height 4 7 Length 4 8 Hub Size 4 NPT Figure 1 1 Transmitter Housing Options EXTERNAL THREAD COVER WITH WINDOW _ ee BCD HUB HOUSING HUB Rev 1 1
19. ter than 1 00 VDC Se NS Apply a Zero gas sample or with the sensor in clean air adjust the Zero trimmer for a stabilized reading of 0 00 VDC measured at the test points 5 Unplug test leads and connect Remote Calibration Lead to multi meter The BLACK lead to negative or common and the RED lead to positive 6 Insert plug end of Remote Calibration Lead fully into CAL jack on the transmitter 7 Select DC milliamp range on the multi meter to read greater than 20 mA full scale If reading is not 4 00 mA adjust trimmer accordingly Apply a Span gas sample The span gas sample need not be the full scale concentration but could be a fraction of this Since the transmitter output range is 4 to 20 mA a full scale concentration should register 20 mA after a few moments exposure A half scale concentration accordingly should provide 12 mA and so on 10 Alternately the integral digital display readout can be used to make the adjustments in steps 4 and 9 above 3 2 3 Adjustments For full recalibration adjustments follow the Set Up Procedure steps 1 to 9 inclusive There are two adjustments to be made for periodic recalibration Zero and Span Zero When there is no gas present the transmitter signal output should be 4 00 mA This is obtained by adjusting the Zero trimmer on the transmitter Alternately set the integral display to read zero using the zero trimmer with no gas present 12 Model HL
20. y We are not liable for auxiliary interfaced equipment or consequential damage This warranty shall not apply to any product which has been modified in any way which has been repaired by any other party other than a qualified technician or authorized Arjay representative or when such failure is due to misuse or conditions of use LIABILITY All Arjay products must be installed and maintained according to instructions Only qualified technicians should install and maintain the equipment Arjay shall have no liability arising from auxiliary interfaced equipment for consequential damage or the installation and operation of this equipment Arjay shall have no liability for labour or freight costs or any other costs or charges in excess of the amount of the invoice for the products THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED AND SPECIFICALLY THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THERE ARE NO WARRANTIES THAT EXTEND BEYOND THE DESCRIPTION ON THE FACE THEREOF MODIFICATIONS AND SUBSTITUTIONS Due to an ongoing development program Arjay reserves the right to substitute components and change specifications at any time without incurring any obligations PRODUCT RETURN All products returned for warranty service will be by prepaid freight and they will only be accepted with an R M A number issued by Arjay All products returned to the client will be freight collect WARNING US
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