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Summary of Contents for RKI Instruments 65-2395RK-CH4
- Page 1 65-2395RK-CH4 Methane Transmitter Operator’s Manual Part Number: 71-0183RK Revision: A Released: 4/12/11 RKI Instruments, Inc. www.rkiinstruments.com...
- Page 2 Typical calibration frequencies for most applications are between 6 and 12 months, but can be required more often or less often based on your usage. 65-2395RK-CH4 Methane Transmitter...
- 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 65-2395RK-CH4 Methane Transmitter... -
Page 5: Overview
WARNING: When using the 65-2395RK-CH4, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 65-2395RK-CH4 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 65-2395RK-CH4 as described in this manual. -
Page 6: Description
Description The 65-2395RK-CH4 methane transmitter is calibrated to methane. The transmitter utilizes an infrared type of detector which has some advantages over a catalytic type of combustible detector. The infrared detector will generally have a longer service life than a... -
Page 7: Amplifier
Consult RKI Instruments, Inc. if you plan to change the calibration gas for the transmitter, for example from a methane calibration to a hexane 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 7.10 MAX Rubber Spacers, J-Box IR CH4 % Volume Detector Figure 2: Mounting the Methane Transmitter 4 • 65-2395RK-CH4 Methane Transmitter... -
Page 9: Wiring The Methane Transmitter
CAUTION: Do not route power and transmitter wiring through the same controller conduit hub. 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. 65-2395RK-CH4 Methane Transmitter • 5... - Page 10 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 can be used to ground the cable’s drain wire. 6 • 65-2395RK-CH4 Methane Transmitter...
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Page 11: Startup
The procedure below describes applying zero emission air, usually called zero air, using a calibration kit that includes a calibration cup, calibration gas, sample tubing, and a fixed flow regulator with an on/off knob. RKI Instruments, Inc. recommends using a 0.5LPM (liters per minute) fixed flow regulator. -
Page 12: Maintenance
Verify that the controller display reading for the channel you are testing is 0 %Vol. If the display reading is not 0 %Vol., set the zero reading of the transmitter as described in “Start Up” on page 7, then continue this procedure. 8 • 65-2395RK-CH4 Methane Transmitter... -
Page 13: Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for problems you may encounter with the methane transmitter. NOTE: This troubleshooting guide describes transmitter problems only. See the controller operator’s manual for problems you may encounter with the controller. 65-2395RK-CH4 Methane Transmitter • 9... -
Page 14: Replacing Components Of The Methane Transmitter
If necessary for environmental conditions, apply thread sealant or teflon tape to the hub and/or detector threads to seal them. 10 • 65-2395RK-CH4 Methane Transmitter... - Page 15 Install the detector and controller terminals 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. 65-2395RK-CH4 Methane Transmitter • 11...
- Page 16 The methane transmitter’s 4-20 mA signal should be stable by the time the controller’s warmup period is over. 12. Allow the transmitter to warm-up for 5 minutes. 13. Calibrate the transmitter as described in “Calibration” on page 13 of this manual. 12 • 65-2395RK-CH4 Methane Transmitter...
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Page 17: Calibration Frequency
Place the controller into its calibration mode or disable external alarms. NOTE: Calibrating the methane transmitter may cause alarms. Be sure to put the controller into its calibration mode or disable external alarms before continuing. 65-2395RK-CH4 Methane Transmitter • 13... -
Page 18: Setting The Zero 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 %Vol. Store the components of the calibration kit in a safe and convenient place. 14 • 65-2395RK-CH4 Methane Transmitter... -
Page 19: Parts List
61-0192RK-CH4 Methane infrared %Vol. detector 65-2395RK-CH4 Methane transmitter (includes detector, junction box, and amplifier) 71-0183RK 65-2395RK-CH4 Combustible Gas Transmitter Operator’s Manual (this docu- ment) 81-0013RK-01 Steel calibration cylinder, 50% Vol. methane in nitrogen, 34-liter 81-0076RK-01 Steel calibration cylinder, zero emission air, 34-liter 81-1050RK Regulator, 0.5 liter/minute;...
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