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Summary of Contents for RKI Instruments 65-2451RK
- Page 1 65-2451RK Hydrogen Transmitter Operator’s Manual Part Number: 71-0133RK Revision: C Released: 5/17/11 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.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 Hydrogen Transmitter GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.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 Hydrogen Transmitter GlobalTestSupply www. -
Page 5: Overview
± 5% of reading or ± 2% LEL (whichever is greater) WARNING: When using the 65-2451RK, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 65-2451RK and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 65-2451RK as described in this manual. -
Page 6: Description
(flame arrestor end). The rainshield helps protect the detector from rain and debris in the monitoring environment. 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 Hydrogen Transmitter GlobalTestSupply www. -
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
2.70 3/4 NPT Female 3.65 7.5 max Rubber Spacers, J Box 3/4 x 1/2 Reducing Bushing Hydrogen Detector Figure 2: Mounting the Hydrogen Transmitter 4 • 65-2451RK Hydrogen Transmitter GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.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 Hydrogen Transmitter • 5 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... - Page 10 W hite 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 Hydrogen Transmitter GlobalTestSupply www. .com Find Quality Products Online at:...
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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 Hydrogen Transmitter • 7 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 12: Maintenance
Remove the junction box cover, then 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 Hydrogen Transmitter GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 13: Troubleshooting
NOTE: This troubleshooting guide describes transmitter problems only. See the controller operator’s manual for problems you may encounter with the controller. 65-2451RK Hydrogen Transmitter • 9 GlobalTestSupply www. .com Find Quality Products Online at:... -
Page 14: Replacing Components Of The Hydrogen Transmitter
Unscrew the detector from the junction box. Guide the detector leads of the replacement detector through the bottom conduit hub of the junction box, then screw the mounting threads of the detector into the conduit hub. 10 • 65-2451RK Hydrogen Transmitter GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... - Page 15 Controller Amplifier Controller Transmitter Terminal Terminal Strip Strip (typical) PWR/SIG “-” - (DC -) PWR/SIG “S” S (4 - 20 mA In) PWR/SIG “+” + 24V 65-2451RK Hydrogen Transmitter • 11 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.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 Hydrogen Transmitter GlobalTestSupply www. -
Page 17: Calibration
Allow the gas to flow for one minute and verify a reading of 100 mV (±2 mV). If necessary, use the zero pot on the amplifier to adjust the reading to 100 mV (±2 mV). Turn the regulator knob clockwise to close the regulator. 65-2451RK Hydrogen Transmitter • 13 GlobalTestSupply www. -
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 Hydrogen Transmitter GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 19: Parts List
NC-6205-01detector is being used when ordering) 65-2451RK Hydrogen transmitter (includes detector, junction box, and amplifier) 71-0133RK 65-2451RK 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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