65-2507RK Oxygen Transmitter Operator’s Manual Part Number: 71-0080RK Revision: B Released: 1/14/14 www.rkiinstruments.
WARNING Read and understand this instruction manual before operating detector. Improper use of the detector could result in bodily harm or death. Periodic calibration and maintenance of the detector is essential for proper operation and correct readings. Please calibrate and maintain this detector regularly! Frequency of calibration depends upon the type of use you have and the sensor types.
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.
Table of Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Oxygen Detector . . . . . . . . . . . . . . . . . . . . . .
Overview This instruction manual describes the oxygen transmitter. This manual also describes how to install, start up, configure, maintain, and calibrate the transmitter when using it with a gas monitoring controller. A parts list at the end of this manual lists replacement parts and accessories for the oxygen transmitter. See the operator’s manual for the controller for information specific to the controller. Specifications Table 1 lists specifications for the oxygen transmitter.
Description This section describes the components of the oxygen transmitter. The transmitter consists of the oxygen detector, amplifier, and junction box.
Amplifier The amplifier converts the electrical output from the oxygen detector to a 4 - 20 mA signal that is proportional to the detection range and transmits the signal to the controller. The amplifier includes the amplifier type selector, detector terminal strip, interconnect terminal strip, span pot, zero pot, and test points (see Figure 1). Amplifier Type Selector The amplifier type selector is near the bottom left corner of the amplifier.
Junction Box Use the junction box to install the oxygen transmitter at a mounting site that is remote from the controller. The junction box also protects the amplifier and wiring connections made to the amplifier. Use the two 3/4 in. conduit hubs to mount the detector to the junction box (bottom hub) and connect wiring from the amplifier to the controller (top hub). NOTE: The oxygen detector and amplifier are factory-mounted to the junction box.
2. At the monitoring site, use #10 screws through the junction box’s two mounting holes to secure the junction box to a vertical surface (see Figure 2). 5.2 in. (13.2 cm) Note: The junction box is 4.6 in. (11.7 cm) deep. 0.25 in. DIA. 5.46 in. (13.9 cm) 7.8 in. (max.) (19.8 cm) 2.75 in. (7.0 cm) 2.4 in. (6.
CAUTION: Leave the cable drain (shield) wire insulated and disconnected at the transmitter. You will connect the opposite end of the cable’s drain wire at the controller. 9. Secure the junction box cover to the junction box. 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.
Start Up This section describes procedures to start up the oxygen transmitter and place the transmitter into normal operation with a controller. Introducing Incoming Power 1. Complete the installation procedures described earlier in this manual. 2. Verify that the power wiring is correct and secure. Refer to the controller operator’s manual for connections at the controller. 3. Turn on or plug in the incoming power to the controller, then turn on the controller. 4.
15. Remove the voltmeter leads from the test points. 16. Secure the junction box cover to the junction box. Maintenance This section describes maintenance procedures. It includes preventive maintenance, troubleshooting, and component replacement procedures. Preventive Maintenance This section describes a preventive maintenance schedule to ensure the optimum performance of the oxygen transmitter. It includes daily, monthly, and quarterly procedures. Daily Verify a display reading of 20.
Troubleshooting The troubleshooting guide describes symptoms, probable causes, and recommended action for problems you may encounter with the oxygen transmitter. NOTE: This troubleshooting guide describes transmitter problems only. See the controller operator’s manual for problems you may encounter with the controller. Table 2:Troubleshooting the Oxygen Transmitter Condition Symptom(s) Probable Causes Recommended Action Fail Condition • Controller indicates a fail condition.
7. Connect the detector leads to the amplifier’s detector terminal strip as shown in Table 3 below and Figure 3 on page 6 of this manual. Table 3: Reconnecting the Oxygen Detector to the Amplifier Detector Lead Detector Terminal Strip White OXY W Green OXY G 8. Turn on power to the controller. 9. Turn on the controller. 10. Calibrate the replacement detector as described in “Calibration” on page 12 of this manual. Replacing the Amplifier 1. Turn off the controller. 2.
11. Reconnect the detector leads to the amplifier’s detector terminal strip as shown in Table 5 below and Figure 3 on page 6 of this manual. Table 5: Reconnecting the Oxygen Detector to the Amplifier Detector Lead Detector Terminal 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 12 of this manual.
Calibration This section describes how to calibrate the oxygen transmitter. It includes procedures to prepare for calibration, set the fresh air reading, set the zero reading, and return to normal operation. It describes the test 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.
4. If necessary, use the zero pot on the amplifier to adjust the reading to 100 mV (±2 mV). 5. Turn the regulator knob clockwise to close the regulator. 6. Remove the regulator from the calibration cylinder. 7. Unscrew the calibration cup from the oxygen detector. NOTE: For convenience, leave the components of the calibration kit connected by the sample tubing. Returning to Normal Operation 1. Remove the voltmeter leads from the amplifier test points. 2.
