Related Manuals for RKI Instruments 65-2396RK 04 Series
Summary of Contents for RKI Instruments 65-2396RK 04 Series
- Page 1 65-2396RK-XX-04 Transmitter Operator’s Manual Part Number: 71-0656 Revision: P1 Released: 1/16/24 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 65-2396RK-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 CO detector, 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 Infrared CO Detector The CO detector is made up of a miniature infrared CO detector housed and encapsulated in a pipe nipple. The pipe nipple has 3/4 NPT threads on each end and a 1 1/4” hex that allows removal or installation of the detector with a wrench. A porous flame arrestor that is coated with a hydrophobic film that repels liquids is on one end of the detector and allows sample gas to enter the detector.
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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 1). 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: Installation
Installation This section describes procedures to mount the CO transmitter in the monitoring environment and wire the transmitter to a controller. Mounting the CO Transmitter 1. Select a mounting site that is representative of the monitoring environment. Consider the following when you select the mounting site: •... -
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 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 4: 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.
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Page 13: Wiring The Amplifier To A Controller
Wiring the Amplifier to a Controller WARNING: Always verify that the power to the controller is off before you make wiring connections. 1. Turn off the controller. 2. Turn off or unplug power to the controller. 3. Remove the amplifier’s junction box cover. 4. - Page 14 9. Connect the wires to the applicable detector/transmitter terminal strip at the controller as shown in Figure 5. + 24 VDC 4 - 20 mA In (S) - (DC Ground) Cable Shield Amplifier J-Box Controller Amplifier (Transmitter) Figure 5: 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 3: Troubleshooting the CO Transmitter Condition... -
Page 18: Replacing Components Of The Co Transmitter
Replacing Components of the CO Transmitter This section includes procedures to replace the entire CO detector assembly and the amplifier. Replacing the IR CO Detector 1. Turn off the controller. 2. Turn off or unplug power to the controller. 3. Remove the junction box cover. 4. - Page 19 12. 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 9. Install the detector and controller terminal strips into their sockets on the new amplifier as shown in Figure 5 on page 14 of this manual. If controller leads or detector leads were removed during this procedure, refer to Table 5 and Table 6 below. Table 5: Reconnecting the Amplifier to the Controller Controller Amplifier...
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Page 21: 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 22: Setting The Zero Reading
6. Place the controller into its calibration mode or disable external alarms. NOTE: Calibrating the CO transmitter may cause alarms. Be sure to put the controller into its calibration mode or disable external alarms before continuing. Setting the Zero Reading Since there is a background of CO in air of typically 300 - 600 ppm (0.03 - 0.06% volume), it is necessary to use a calibration kit with a 100% nitrogen cylinder to set the zero signal of a CO... - Page 23 4. When the controller display reading falls below the alarm setpoints, return the controller to normal operation. 5. Verify that the controller display reading decreases and stabilizes at a typical background CO level. The 0-5,000 ppm, 0-9,000 ppm, and 0-5% volume detectors will display a reading in a fresh air environment because they have low ranges.
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Page 24: Parts List
Parts List Table 7 lists replacement parts and accessories for the CO transmitter. Table 7: 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) 57-1053RK Amplifier with gasket (specify detector part number when ordering) 61-0191RK-01... - Page 25 Table 7: Parts List Part Number Description 81-0073RK-01 Calibration cylinder, 15% CO , 34 liter steel 81-0078RK-01 Calibration cylinder, 100% nitrogen, 34 liter steel 81-1050RK Regulator, with gauge and knob, 0.5 liter/minute continuous flow, for 17 liter and 34 liter steel calibration cylinders (cylinders with external threads) 81-1051RK Regulator, with gauge and knob, 0.5 liter/minute continuous flow, for 34 liter alu- minum/58 liter/103 liter calibration cylinders (cylinders with internal threads)
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