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Summary of Contents for RKI Instruments 65-2321RK
- Page 1 65-2321RK Oxygen Transmitter Operator’s Manual Part Number: 71-0175RK Revision: A Released: 7/3/14 1.800.544.2843 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. 65-2321RK Oxygen Transmitter 1.800.544.2843 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 65-2321RK Oxygen Transmitter 1.800.544.2843... -
Page 5: Overview
90% in 30 seconds WARNING: When using the 65-2321RK, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 65-2321RK and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 65-2321RK as described in this manual. -
Page 6: Description
Controller Terminal Strip Factory Adjust Pot Span Pot Zero Pot Amplifier + Test Point (Red) Detector Terminal Strip 100mV-500mV Range - Test Point (Black) J-Box Oxygen Detector Figure 1: Oxygen Transmitter Component Location 2 • 65-2321RK Oxygen Transmitter 1.800.544.2843 www.calcert.com sales@calcert.com... -
Page 7: Oxygen Detector
The plug-in sensor is secured in the detector assembly by the housing cap. Through a series of chemical and electrical reactions, the sensor produces a millivolt output that corresponds to the detection range of the transmitter. 65-2321RK Oxygen Transmitter • 3 1.800.544.2843 www.calcert.com... -
Page 8: Amplifier
Use the cover on the front of the junction box to access the interior of the junction box. The detector and amplifier are factory installed in the junction box. Three spacers installed on the back of the junction box control the distance of the junction box 4 • 65-2321RK Oxygen Transmitter 1.800.544.2843 www.calcert.com... -
Page 9: Installation
1-1/2 - 20 Thread for Calibration Cup Figure 3: Mounting the Oxygen Transmitter At the monitoring site you select, hang or mount the junction box with the detector facing down (see Figure 3). 65-2321RK Oxygen Transmitter • 5 1.800.544.2843 www.calcert.com sales@calcert.com... -
Page 10: Wiring The Oxygen Transmitter To A Controller
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 4. 6 • 65-2321RK Oxygen Transmitter 1.800.544.2843 www.calcert.com sales@calcert.com... - Page 11 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. 65-2321RK Oxygen Transmitter • 7 1.800.544.2843 www.calcert.com...
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Page 12: 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 0.5 LPM (liters per minute) fixed flow regulator. -
Page 13: Maintenance
NOTE: If the reading does not decrease, calibrate the detector as described in “Calibration” on page 13. Remove the voltmeter leads from the amplifier test points, then secure the junction box cover to the junction box. 65-2321RK Oxygen Transmitter • 9 1.800.544.2843 www.calcert.com sales@calcert.com... -
Page 14: Troubleshooting
Some applications 5. If the calibration/response difficulties may require a more continue, contact RKI for further frequent calibration instruction. schedule. 10 • 65-2321RK Oxygen Transmitter 1.800.544.2843 www.calcert.com sales@calcert.com... -
Page 15: Replacing Components Of The Oxygen Transmitter
If necessary for environmental conditions, apply thread sealant or teflon tape to the hub and/or detector threads to seal them. 65-2321RK Oxygen Transmitter • 11 1.800.544.2843 www.calcert.com... - Page 16 10. Turn on the controller and place it into normal operation. 11. Allow the transmitter to warm-up for 5 minutes. 12. Calibrate the transmitter as described in “Calibration” on page 13 of this manual. 12 • 65-2321RK Oxygen Transmitter 1.800.544.2843 www.calcert.com...
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Page 17: Calibration Frequency
Screw the regulator into the zero air calibration cylinder. Use the sample tubing to connect the regulator to the calibration cup. 65-2321RK Oxygen Transmitter • 13 1.800.544.2843 www.calcert.com... -
Page 18: 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. Verify that the controller display reading increases and stabilizes at 20.9% volume. Store the components of the calibration kit in a safe and convenient place. 14 • 65-2321RK Oxygen Transmitter 1.800.544.2843 www.calcert.com sales@calcert.com... -
Page 19: Parts List
S2 series oxygen amplifier, w/orienting gasket, 0 - 25% 65-1025RK Oxygen plug-in sensor 65-2494RK Oxygen replacement detector assembly, includes plug-in sensor 71-0175RK 65-2321RK Operator’s Manual (this document) 81-0076RK Zero air calibration cylinder, 17 liter steel 81-0076RK-01 Zero air calibration cylinder, 34 liter steel 81-0076RK-03...
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