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Summary of Contents for RKI Instruments 65-2451RK-05
- Page 1 65-2451RK-05 Hydrogen Transmitter Operator’s Manual Part Number: 71-0182RK Revision: 0 Released: 5/17/11 1.888.610.7664 www.calcert.com sales@calcert.com...
- Page 2 Typical calibration frequencies for most applications are between 3 and 6 months, but can be required more often or less often based on your usage. 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com sales@calcert.com...
- Page 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 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.
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Page 4: Table Of Contents
Parts List ..............15 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664... -
Page 5: Overview
WARNING: When using the 65-2451RK-05, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 65-2451RK-05 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 65-2451RK-05 as described in this manual. -
Page 6: Description
The flame arrestor guard protects the flame arrestor from impact damage. Four color-coded leads extend from the top of the detector. The leads allow you to connect the detector to the amplifier. 2 • 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com... -
Page 7: Amplifier
Consult RKI Instruments, Inc. if you plan to change the calibration gas for the transmitter, for example from a hydrogen calibration to a methane calibration. The amplifier includes the detector terminal strip, controller terminal strip, span pot, zero pot, and test points (see Figure 1). -
Page 8: Installation
3/4 NPT 2.70 Female 3.65 7.5 MAX Rubber Spacer, J-Box 3/4 x 1/2 Reducing Bushing Hydrogen LEL Detector Figure 2: Mounting the Hydrogen Transmitter 4 • 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com sales@calcert.com... -
Page 9: Wiring The Hydrogen Transmitter
The power cable may disrupt the transmission of the transmitter signal to the controller. 11. Connect the wires to the applicable detector/transmitter terminal strip at the controller as shown in Figure 3. 65-2451RK-05 Hydrogen Transmitter • 5 1.888.610.7664 www.calcert.com sales@calcert.com... - Page 10 Hydrogen LEL Detector Figure 3: Wiring the Hydrogen 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. 6 • 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com sales@calcert.com...
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Page 11: Startup
If necessary, use a small flat-blade screwdriver to adjust the zero pot until the voltmeter reading is 100 mV (±2 mV). Remove the voltmeter leads from the test points. Secure the junction box cover to the junction box. 65-2451RK-05 Hydrogen Transmitter • 7 1.888.610.7664 www.calcert.com sales@calcert.com... -
Page 12: Maintenance
Set a voltmeter to measure in the millivolt (mV) range. Plug the voltmeter leads into the test points on the amplifier. Plug the positive lead into the red (+) test point; plug the negative lead into the black (-) test point. 8 • 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com... -
Page 13: Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for problems you may encounter with the hydrogen transmitter. NOTE: This troubleshooting guide describes transmitter problems only. See the controller operator’s manual for problems you may encounter with the controller. 65-2451RK-05 Hydrogen Transmitter • 9 1.888.610.7664 www.calcert.com sales@calcert.com... -
Page 14: Replacing Components Of The Hydrogen Transmitter
If necessary for environmental conditions, apply thread sealant or teflon tape to the hub and/or detector threads to seal them. 10 • 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com... - Page 15 Install the detector and controller terminal strips into their sockets on the new amplifier as shown in Figure 3 on page 6 of this manual. If controller leads or detector leads were removed during this procedure, refer to Table 4 and Table 5 below. 65-2451RK-05 Hydrogen Transmitter • 11 1.888.610.7664 www.calcert.com...
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Page 16: Calibration Frequency
3 months may be necessary. If potential catalyst poisons are known or likely to be present, more frequent calibration than every 3 months will be necessary. 12 • 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com... -
Page 17: Calibration
Screw the regulator into the zero air calibration cylinder. Use the calibration kit sample tubing to connect the regulator to the calibration cup. Turn the regulator’s on/off knob counterclockwise to open the regulator. 65-2451RK-05 Hydrogen Transmitter • 13 1.888.610.7664 www.calcert.com... -
Page 18: Setting The Response Reading
When the controller display reading falls below the alarm setpoints, return the controller to normal operation. Verify that the controller display reading decreases and stabilizes at 0 %LEL. Store the components of the calibration kit in a safe and convenient place. 14 • 65-2451RK-05 Hydrogen Transmitter 1.888.610.7664 www.calcert.com sales@calcert.com... -
Page 19: Parts List
NC-6205-01detector is being used when ordering) 65-2451RK-05 Hydrogen transmitter (includes detector, junction box, and amplifier) 71-0182RK 65-2451RK-05 Hydrogen Transmitter Operator’s Manual (this document) 81-0002RK-01 Steel calibration cylinder, 50% LEL hydrogen in air, 34-liter 81-0076RK-01 Steel calibration cylinder, zero emission air, 34-liter 81-1050RK Regulator, 0.5 liter/minute;...
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