Related Manuals for RKI Instruments 65-2507RK
Summary of Contents for RKI Instruments 65-2507RK
- Page 1 65-2507RK Oxygen Transmitter Operator’s Manual Part Number: 71-0080RK Revision: 0 Released: 12/6/2002 RKI Instruments, Inc. • 33248 Central Ave • Union City, CA 94587 • 510-441-5656...
- Page 2 Product Warranty RKI Instruments, Inc., warranties 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 3: Table Of Contents
Parts List ..............17 65-2507RK Oxygen Transmitter • 3... -
Page 4: Overview
Oxygen (O Area Classification Explosionproof for Class I, Groups B, C, and D Sampling Method Diffusion Signal Output 4 - 20 mA Detection Range 0 to 25.0% VOL (by volume) Response Time 90% in 30 seconds 65-2507RK Oxygen Transmitter • 4... -
Page 5: Description
(3/4 in. NPT) at the top of the detector housing allow you to mount the oxygen detector into the bottom conduit hub of the junction box. Detector leads Two color-coded leads extend from the top of the detector. The leads allow you to connect the oxygen detector to the amplifier. 65-2507RK Oxygen Transmitter • 5... -
Page 6: Amplifier
The test points produce a 100 - 500 mV output that is proportional to the transmitter’s 4 - 20 mA output. Use the test points and a voltmeter to measure the transmitter’s output during the start-up and calibration procedures. 65-2507RK Oxygen Transmitter • 6... -
Page 7: Junction Box
Use the junction box’s two mounting holes to mount the oxygen transmitter to a vertical surface at the monitoring site. Use the cover on the front of the junction box to access the interior of the junction box. 65-2507RK Oxygen Transmitter • 7... -
Page 8: Installation
Note: The junction box is 0.25 in. DIA. 4.6 in. (11.7 cm) deep. 5.46 in. (13.9 cm) 7.8 in. (max.) (19.8 cm) 2.75 in. (7.0 cm) 2.4 in. (6.1 cm) Figure 2: Mounting the Oxygen Transmitter 65-2507RK Oxygen Transmitter • 8... -
Page 9: Wiring The Oxygen Transmitter To A Controller
10. Route the cable or wires leading from the oxygen transmitter through one of the conduit hubs at the controller. CAUTION: Do not route power and transmitter wiring through the same conduit hub. The power cable may disrupt the transmission of the transmitter signal to the controller. 65-2507RK Oxygen Transmitter • 9... - Page 10 Select Header TOXIC R D B K Oxygen Detector Factory Wired Green White Figure 3: Wiring the Oxygen Transmitter to a Controller 12. At the controller, connect the cable’s drain wire to an available chassis ground. 65-2507RK Oxygen Transmitter • 10...
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Page 11: Start Up
Verify a voltmeter reading of 434 mV (±2 mV). If necessary, use a flat-blade screwdriver to adjust the span potentiometer until the voltmeter reading is 434 mV (±2 mV). Secure the junction box cover to the junction box. 65-2507RK Oxygen Transmitter • 11... -
Page 12: Maintenance
When the display reading rises above the decreasing alarm setpoint, return the controller to normal operation. Quarterly Calibrate the oxygen transmitter as described in “Calibration” on page 16 of this manual. 65-2507RK Oxygen Transmitter • 12... -
Page 13: Troubleshooting
RKI for further calibration. instruction. • Transmitter requires frequent calibration. Note: Under “normal” circumstances, the transmitter requires calibration once every three months. Some applications may require a more frequent calibration schedule. 65-2507RK Oxygen Transmitter • 13... -
Page 14: Replacing Components Of The Oxygen Transmitter
Remove the amplifier. Place the new amplifier in the same position as the amplifier you removed in the previous step. Use the two screws you removed in step 5 to secure the amplifier to the junction box. 65-2507RK Oxygen Transmitter • 14... - Page 15 Detector Lead Strip White OXY W Green OXY G 12. Turn of power to the controller 13. Turn on the controller. 14. Calibrate the oxygen transmitter as described in “Calibration” on page 16 of this manual. 65-2507RK Oxygen Transmitter • 15...
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Page 16: Calibration
If necessary, use the zero potentiometer on the amplifier to adjust the reading to 100 mV (±2 mV). Unscrew the regulator from the calibration cylinder. Remove the calibration cup from the oxygen detector. NOTE: For convenience, leave the components of the calibration kit connected by the sample tubing. 65-2507RK Oxygen Transmitter • 16... -
Page 17: Returning To Normal Operation
Oxygen Transmitter Operator’s Manual (this document) 81-0076RK-01 Zero air calibration cylinder (34 liter) 81-0078RK Calibration cylinder (100% nitrogen, 17-liter) 81-0078RK-01 Calibration cylinder (100% nitrogen; 34-liter) 81-1003RK Regulator, 0.5 liter/minute; continuous flow (for 17- and 34-liter calibration cylinders) 81-1111RK Calibration cup 65-2507RK Oxygen Transmitter • 17...
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