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65-2443 PPM Hydrogen Transmitter • 3

Product Warranty

RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects in materials, 
workmanship, and performance for a period of one year* from the date of shipment from RKI 
Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our 
option, free of charge. Parts must be returned to RKI Instruments, Inc. for repair or replacement. This 
warranty does not apply to those items which by their nature are subject to deterioration or 
consumption in normal service, and which must be cleaned, repaired or replaced on a routine basis. 
Examples of such items are:

Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair 
procedures not in accordance with instruction manual. This warranty indicates the full extend of our 
liability, and we are not responsible for removal or replacement costs, local repair costs, transportation 
costs, or contingent expenses incurred without our prior approval.

THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES 
AND REPRESENTATIONS, EXPRESSED OR IMPLIED, AND ALL OTHER 
OBLIGATIONS OR LIABILITIES ON THE PART OF RKI INSTRUMENTS, INC. 
INCLUDING BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR 
FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL RKI INSTRUMENTS, 
INC. BE LIABLE FOR INDIRECT, INCIDENTAL OR CONSEQUENTIAL LOSS OR 
DAMAGE OF ANY KIND CONNECTED WITH THE USE OF ITS PRODUCTS OR 
FAILURE OF ITS PRODUCTS TO FUNCTION OR OPERATE PROPERLY.

This warranty covers instruments and parts sold to users only by authorized distributors, dealers and 
representatives as appointed by RKI Instruments, Inc.

We do not assume indemnification for any accident or damage caused by the operation of this gas 
monitor and our warranty is limited to the replacement of parts or our complete goods. Warranty 
covers parts and labor performed at RKI Instruments, Inc. only, and does not cover field labor or 
shipment of parts back to RKI. 

a) Pump diaphragms and valves

c) Batteries

b) Fuses

d) Filter elements

Summary of Contents for 65-2443

Page 1: ...RKI Instruments Inc www rkiinstruments com 65 2443 PPM Hydrogen Transmitter Operator s Manual Part Number 71 0542 Revision P1 Released 12 29 20...

Page 2: ...c calibration and maintenance of the detector is essential for proper operation and correct readings Please calibrate and maintain this detector regularly Frequency of calibration depends upon the typ...

Page 3: ...air costs transportation costs or contingent expenses incurred without our prior approval THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS EXPRESSED OR IMPLIED AN...

Page 4: ...up 12 Introducing Incoming Power 12 Transmitter Burn In Period 12 Setting the Zero Signal 12 Maintenance 13 Preventive Maintenance 13 Troubleshooting 13 Replacing Components of the PPM Hydrogen Transm...

Page 5: ...en transmitter WARNING When using the 65 2443 you must follow the instructions and warnings in this manual to assure proper and safe operation of the 65 2443 and to minimize the risk of personal injur...

Page 6: ...hydrogen transmitter s components It is a 4 to 20 mA type detector head It consists of the ppm hydrogen detector amplifier and junction box Figure 1 Component Location Amplifier J Box Hydrogen Detecto...

Page 7: ...lifier see below Amplifier The amplifier converts the non linear electrical output from the detector to a linear 4 to 20 mA signal that corresponds to the detection range and transmits the signal to a...

Page 8: ...side of the amplifier see Figure 2 The test points produce a 100 to 500 mV output that corresponds to the transmitter s 4 to 20 mA output Use the test points and a voltmeter to measure the amplifier...

Page 9: ...the mounting site Select a site where the transmitter is not likely to be bumped or disturbed Make sure there is sufficient room to perform start up maintenance and calibration procedures Select a sit...

Page 10: ...rough the top conduit hub of the junction box 7 Pull out the controller terminal strip and connect the three wires to the terminal strip as follows see Figure 4 Connect the positive wire to the PWR SI...

Page 11: ...rogen Transmitter to a Controller 12 If shielded cable is used connect the cable s drain wire to an available chassis earth ground at the controller RKI controllers typically have a ground stud that c...

Page 12: ...on the controller 5 Verify that the controller is on and operating properly Refer to the controller operator s manual Transmitter Burn In Period Once power has been applied to the transmitter it will...

Page 13: ...obable Causes Recommended Action Fail Condition Controller indicates a fail condition The transmitter wiring is disconnected or misconnected The transmitter is malfunctioning 1 Verify that the transmi...

Page 14: ...Figure 4 on page 11 of this manual 9 Re install the detector terminal strip into its socket NOTE When a transmitter is first powered up with a new detector its output may be high enough to cause an al...

Page 15: ...Figure 4 on page 11 of this manual If controller leads or detector leads were removed during this procedure refer to Tables 4 and 5 below 8 Install the amplifier into the junction box with the screw l...

Page 16: ...or the environment is not well controlled then more frequent calibration than every 6 months may be necessary Calibration This section describes how to calibrate the ppm hydrogen transmitter It includ...

Page 17: ...rogram or disable external alarms before continuing Setting the Zero Reading The detector s zero setting is controlled by electronics and is not user adjustable Setting the Span Reading 1 Screw the re...

Page 18: ...transmitter includes detector and amplifier 71 0542 65 2443 PPM Hydrogen Transmitter Operator s Manual this document 81 0000RK 01 Calibration cylinder 1 000 ppm hydrogen in air 34 liter steel 81 0000R...

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