Related Manuals for RKI Instruments 65-2397-04 Series
Summary of Contents for RKI Instruments 65-2397-04 Series
- Page 1 65-2397-XX-04 Transmitter Operator’s Manual Part Number: 71-0631 Revision: P1 Released: 4/7/23 RKI Instruments, Inc. www.rkiinstruments.com...
- Page 2 WARNING Read and understand this instruction manual before operating transmitter. Improper use of the transmitter could result in bodily harm or death. Periodic calibration and maintenance of the transmitter is essential for proper operation and correct readings. Please calibrate and maintain this transmitter regularly! Frequency of calibration depends upon the type of use you have and the sensor types.
- 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
Table of Contents Overview ............5 Specifications . -
Page 5: Overview
Overview This manual describes the 65-2397-XX-04 CO transmitter. This manual also describes how to install, start up, configure, maintain, and calibrate the transmitter when it is used with a gas monitoring controller. A parts list at the end of this manual lists replacement parts and accessories for the CO transmitter. -
Page 6: Description
Description This section describes the components of the CO transmitter. The transmitter is a 4 - 20 mA type detector head. It consists of the hydrogen detector, calibration cup/splash guard, amplifier, the amplifier junction box, and the detector junction box. The two-junction-box configuration is intended for situations where the detector needs to be installed at an inaccessible location. -
Page 7: Co 2 Detector
Infrared CO Detector The CO detector consists of the detector housing body, detector housing cap, cap gasket, and the plug-in sensor. Detector Housing Body Cap Gasket Plug-In CO2 Sensor Sensor Retainer Detector Housing Cap Hydrophobic Membrane Figure 2: CO Detector Component Location Detector Housing Body The detector housing body protects the electronic components within the housing. -
Page 8: Amplifier
Amplifier The amplifier converts the electrical output from the detector to a 4 to 20 mA signal that corresponds to the detection range and transmits the signal to a gas monitoring controller. A foam gasket that orients the amplifier and keeps it from rotating is installed on the bottom of the amplifier. -
Page 9: Amplifier Junction Box
Span Pot The span pot is located to the right of the zero pot (see Figure 3). Use a small flat blade screwdriver to turn the span pot’s adjustment screw and adjust the amplifier’s gas response output during the calibration procedure. Turn the adjustment screw clockwise to increase the gas response and counterclockwise to decrease the gas response. - Page 10 • For the amplifier junction box, select a site where the junction box is not likely to be bumped or disturbed. Make sure there is sufficient room to perform start-up, maintenance, and calibration procedures. The site should be easily accessible. •...
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Page 11: Wiring The Detector To The Amplifier
To make wiring more convenient, use wire colors that correspond to the detector wire colors: red, white, green, and black. NOTE: Consult RKI Instruments, Inc. for cable lengths longer than 200 feet. 5. Connect the detector leads to the terminal block in the detector junction box. -
Page 12: Wiring The Amplifier To A Controller
Cable Shield Amplifier Detector Terminal Strip Black Green White Black Detector J-Box Green White Amplifier J-Box IR CO2 Detector Calibration Cup/Splash Guard Figure 5: Wiring the Detector to the Amplifier 10. Reinstall the detector terminal strip into its socket. 11. If shielded cable is used, connect the cable’s drain wire to an available chassis (earth) ground at the amplifier junction box. - Page 13 3. Remove the amplifier’s junction box cover. 4. Guide a three-conductor, shielded cable, or three wires in conduit through the top conduit hub of the junction box. 5. Pull out the controller terminal strip, and connect the three wires to the terminal strip as follows (see Figure 6).
- Page 14 9. Connect the wires to the applicable detector/transmitter terminal strip at the controller as shown in Figure 6. + 24 VDC 4 - 20 mA In (S) - (DC Ground) Cable Shield Amplifier J-Box Controller Amplifier (Transmitter) Figure 6: Wiring the Amplifier to a Controller 10.
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Page 15: Startup
RKI Instruments, Inc. recommends using a 0.5 LPM (liters per minute) fixed flow regulator. 1. Unscrew and remove the junction box cover from the junction box. -
Page 16: Maintenance
3. Plug the voltmeter leads into the test points on the amplifier. Plug the positive lead into the red (+) test point; plug the negative lead into the black (-) test point. 4. Screw the calibration cup onto the bottom of the IR CO detector. -
Page 17: Troubleshooting
Troubleshooting The troubleshooting guide describes symptoms, probable causes, and recommended action for problems you may encounter with the CO 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 CO Transmitter Condition... -
Page 18: Replacing Components Of The Co Transmitter
Table 2: Troubleshooting the CO Transmitter (Continued) Condition Symptom(s) Probable Causes Recommended Action • Unable to • The calibration 1. Verify that the calibration cylinder Slow or No contains an adequate supply of a accurately set the cylinder is low, out- Response/ fresh test sample. - Page 19 9. Turn on the controller and place it into normal operation. NOTE: When first powered up, the transmitter will enter about a one minute period when the 4-20 mA output is stabilizing and may be above the controller alarm points or well below zero momentarily. RKI controllers have a one minute warmup period when the controller does not display any gas reading or give any alarm indication.
- Page 20 4. Remove the detector terminal strip from its socket. 5. Disconnect the detector leads from the detector terminal strip. Note the position of the color- coded leads as you remove them. 6. Unscrew the detector from the junction box. 7. Guide the detector leads of the replacement detector through the bottom conduit hub of the junction box, then screw the mounting threads of the detector into the conduit hub.
- Page 21 3. Remove the junction box cover. 4. Unplug the detector terminal strip and controller terminal strip from their sockets. You may leave the wires connected to the terminal strips. 5. Unscrew and remove the screw with the flat and lock washers that secures the amplifier to the junction box.
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Page 22: Calibration Frequency
6 months is adequate for most infrared CO transmitter applications. Unless experience in a particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of every 6 months. If an application is not very demanding, for example detection in a clean, temperature controlled environment where calibration adjustments are minimal at calibration, then a calibration frequency of every 9 to 12 months is adequate. -
Page 23: Setting The Zero Reading
3. Plug the voltmeter leads into the test points on the amplifier. Plug the positive lead into the red (+) test point; plug the negative lead into the black (-) test point. 4. Use the following formula to determine the correct test points output for the calibrating sample. -
Page 24: Returning To Normal Operation
5. Unscrew the regulator from the calibration cylinder. Returning to Normal Operation 1. Remove the voltmeter leads from the amplifier test points. 2. Unscrew the calibration cup from the detector. NOTE: For convenience, leave the regulator and calibration cup connected by the sample tubing. -
Page 25: Parts List
Parts List Table 6 lists replacement parts and accessories for the CO transmitter. Table 6: Parts List Part Number Description 06-1248RK Sample tubing (3/16 in. x 5/16 in.; specify length when ordering) 07-0039RK Detector housing cap gasket 18-0400RK-01 Junction box with spacers (for amplifier and detector junction boxes) 33-0157RK Hydrophobic disk membrane for detector cap 57-1053RK...
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