65-2504RK Oxygen Transmitter Operator’s Manual Part Number: 71-0063RK Revision: C Released: 1/14/13 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.
NOTE: The oxygen detector and amplifier are factory-mounted to the 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. Installation This section describes procedures to mount the oxygen transmitter in the monitoring environment and wire the transmitter to a controller. Mounting the Oxygen Transmitter 1.
Wiring the Oxygen Transmitter to a Controller WARNING: Always verify that the controller is off and power to the controller is off before you make wiring connections. 1. Turn off the controller. 2. Turn off power to the controller. 3. Remove the junction box cover. 4. Verify that the detector leads are wired to the amplifier’s detector terminal strip. If necessary, connect the leads to the detector terminal strip as shown in Figure 3. 5.
11. Connect the wires to the applicable transmitter terminal strip at the controller as shown in Figure 3. Controller or Recording Device (11 VDC - 30 VDC) + 4 - 20 mA In (FB) Not Used BATT + FB 4/2 0 24 V TP + TP + Factory Set Pot ZERO Jumper Block Installed on Oxygen Select Header SPAN TOXIC OXY TOXIC RD BK OXY W G Oxygen Detector Factory Wired Green White Figure 3: Wiring the Oxygen Transmitter to a Controller 12.
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 instruction manual for connections at the controller. 3. Turn on or plug in the incoming power to the controller, then turn on the controller. 4.
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 20.9% oxygen at the controller. Investigate significant changes in the reading.
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 instruction 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.
Replacing Components of the Oxygen Transmitter This section includes procedures to replace the oxygen detector and amplifier. Replacing the Oxygen Detector 1. Turn off the controller. 2. Turn off power to the controller. 3. Remove the junction box cover. 4. Disconnect the detector leads from the detector terminal strip. Note the position of the color-coded leads as you remove them. 5. Unscrew the detector from the junction box. 6.
10. Reconnect the wiring that connects the controller and oxygen transmitter to the amplifier’s interconnect terminal strip as shown in Table 4 below and Figure 3 on page 6 of this manual. Table 4: Reconnecting the Oxygen Amplifier to the Controller Amplifier Interconnect Terminal Strip Controller Transmitter Terminal Strip 4/20 4 - 20 (FB) 24V + (11 VDC - 30VDC) 11.
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 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.
5. Turn the regulator knob clockwise to close the regulator. 6. Unscrew 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. Secure the junction box cover to the junction box. 3.
