Related Manuals for RKI Instruments 65-2494RK
Summary of Contents for RKI Instruments 65-2494RK
- Page 1 65-2494RK/65-2497RK Oxygen Detector Operator’s Manual Part Number: 71-0179RK Revision: A Released: 6/24/21 www.rkiinstruments.com...
- Page 2 Frequency of calibration depends upon the type of use you have and the sensor types. 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. 2 • 65-2494RK/65-2497RK Oxygen Detector...
- 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
65-2494RK Oxygen Detector ........ -
Page 5: Overview
65-2494RK oxygen detector which does not include a junction box and is normally mounted in one of a controller’s conduit hubs. If you are using a 65-2494RK oxygen detector, disregard all references to the junction box and junction box terminal strip. -
Page 6: Description
This section describes the components of the 65-2494RK and 65-2497RK detectors. The 65-2497RK includes the 65-2494RK oxygen detector and a junction box. A two point terminal strip is provided inside the junction box for detector connections. The 65-2494RK does not include a junction box. -
Page 7: Junction Box
Mounting the Oxygen Detector NOTE: If you are installing a 65-2494RK, it does not include a junction box and is usually factory installed in one of a controller’s conduit hubs or may be field installed using the 3/4 NPT threads on the end with the wires. -
Page 8: Wiring The Oxygen Detector To A Controller
“Start Up” on page 10. See Figure 4, the controller operator’s manual, and the controller’s detector head specification sheet for the 65-2494RK detector for the wiring connections. 4. Remove the junction box cover. - Page 9 Figure 4: Wiring the Oxygen Detector to a Controller 10. If using shielded cable, connect the cable’s drain wire to an available chassis ground at the controller. RKI controllers typically have a ground stud that is a convenient grounding location. 65-2494RK/65-2497RK Oxygen Detector • 9...
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Page 10: Startup
Verify a display reading of 20.9% oxygen at the controller. Investigate significant changes in the display reading. Quarterly Calibrate the detector as described in “Calibration” on page 14. See the calibration frequency discussion in “Calibration Frequency” on page 14 to determine if a quarterly calibration schedule fits your needs. 10 • 65-2494RK/65-2497RK Oxygen Detector... -
Page 11: Troubleshooting
5. If the calibration/response difficulties continue, replace the plug-in sensor as described later in this section. 6. If the calibration/response difficulties continue, contact RKI for further instruction. 65-2494RK/65-2497RK Oxygen Detector • 11... -
Page 12: Replacing Components Of The Oxygen Detector
6. Install the new membrane in the recess on the face of the detector housing cap. 7. Make sure the cap gasket is in place and screw the detector housing cap back onto the detector housing body. 8. Turn on the power to the controller. 9. Turn on the controller. 12 • 65-2494RK/65-2497RK Oxygen Detector... - Page 13 10. Turn on the controller and place into normal operation. CAUTION: Allow the replacement detector to warm up for 5 minutes before you continue with the next step. 11. Calibrate the replacement detector as described in “Calibration” on page 14. 65-2494RK/65-2497RK Oxygen Detector • 13...
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Page 14: Calibration Frequency
It describes calibration 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 0.5 LPM (liters per minute) fixed flow regulator. -
Page 15: Setting The Zero Reading
NOTE: If you do not allow the gas reading to increase above the decreasing alarm point, then unwanted alarms may occur. 10. Verify that the controller display reading increases and stabilizes at 20.9% oxygen. 11. Store the components of the calibration kit in a safe and convenient place. 65-2494RK/65-2497RK Oxygen Detector • 15... -
Page 16: Parts List
Hydrophobic membrane 65-1025RK Oxygen plug-in sensor 65-2494RK Oxygen replacement detector assembly (includes sensor) 71-0179RK 65-2494RK/65-2497RK Oxygen Detector Operator’s Manual (this document) 81-0076RK Zero air calibration cylinder, 17 liter 81-0076RK-01 Zero air calibration cylinder, 34 liter steel 81-0076RK-03 Zero air calibration cylinder, 103 liter...
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