65-2427RK-05 Hydrogen Sulfide Detector Operator’s Manual Part Number: 71-0227RK Revision: 0 Released: 7/18/14 RKI Instruments, Inc. www.rkiinstruments.
WARNING Read and understand this instruction manual before operating instrument. 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. 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.
Table of Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 H2S Detector . . . . . . . . . . . . . . . . . . . . . . .
Overview This manual describes the 65-2427RK-05 hydrogen sulfide (H2S) detector. This manual also describes how to install, start up, maintain, and calibrate the detector 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 H2S detector. Specifications WARNING: Do not use this product in a manner not specified in this instruction manual. Table 1 lists specifications for the H2S detector.
Description This section describes the components of the 65-2427RK-05 H2S detector. The 65-2427RK-05 consists of the 65-2423RK-05 H2S detector and junction box.
65-2423RK-05 H2S Detector The 65-2423RK-05 H2S detector consists of the detector housing body, detector housing cap, cap gasket, rubber boot, spacer, and the plug-in sensor. Detector Housing Body Cap Gasket H2S Plug-in Sensor Spacer Rubber Boot Detector Housing Cap Flame Arrestor Guard Figure 2: H2S Detector Component Location Detector Housing Body, Housing Cap, & Cap Gasket The detector housing body protects the sensing components within the housing.
Junction Box The junction box allows you to install the detector at a mounting site that is remote from a controller, and it protects the detector wiring connections. Two conduit hubs allow you to mount the detector to the junction box and connect the wiring from the detector to a controller.
3.10 3/4 NPT Female .75 .38 3.65 8.25 MAX Rubber Spacers 3X J-Box H2S Detector 1-1/2 - 20 Thread for Calibration Cup Figure 3: Outline & Mounting Dimensions 2. At the monitoring site you select, hang or mount the junction box with the detector facing down (see Figure 3). Wiring the H2S Detector to a Controller WARNING: Always verify that the power source is OFF before you make wiring connections. 1. Turn off the controller. 2. Turn off or unplug power to the controller. 3.
4. Guide a two-conductor, shielded cable or two wires in conduit through an unused conduit hub of the junction box. Use appropriate conduit fittings and construction technique for the environmental and hazardous location rating of the junction box. The junction box is rated NEMA 4X and Class 1, Division 1, Groups B, C, D. 5. Connect the two wires to the detector using the 2 point terminal block. CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the detector.
9. If using shielded cable, connect the cable’s drain wire to an available chassis ground at the controller. RKI controllers typically have a ground stud that is a convenient grounding location. 10. Reinstall the junction box cover. Start Up This section describes procedures to start up the H2S detector and place the detector into normal operation. Introducing Incoming Power 1. Complete the installation procedures described earlier in this manual. 2.
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 H2S detector. It includes daily, monthly, and quarterly procedures. Daily Verify a display reading of 0 PPM H2S at the controller. Investigate significant changes in the display reading.
5. Unscrew the calibration cup from the H2S detector. 6. When the controller display reading falls below the alarm setpoints, return the controller to normal operation. 7. Store the components of the calibration kit in a safe place. Quarterly Calibrate the H2S detector as described in the Calibration section of this manual. Troubleshooting The troubleshooting guide describes symptoms, probable causes, and recommended action for problems you may encounter with the H2S detector.
Replacing Components of the H2S Detector This section includes a procedure to replace the H2S sensor and the entire detector assembly. In most cases, it is not necessary to replace the entire detector assembly. Replacing the Plug-In H2S Sensor CAUTION: The sensor contains electrolyte which is a dilute acid. Do not disassemble the sensor when replacing it with a new one. If sensor electrolyte comes in contact with your skin, wash affected area thoroughly with soap and water. 1. Turn off the controller. 2.
8. Reinstall the junction box cover. 9. Turn on or plug in power to the controller. 10. Turn on the controller and place into normal operation. CAUTION: Allow the replacement detector to warm up for 5 minutes before you continue with the next step. 11. Calibrate the replacement detector as described in the Calibration section of this manual.
Setting the Zero Reading NOTE If you can verify that the H2S detector is in a fresh air environment, you do not need to apply zero air to the detector before adjusting the zero reading. 1. Follow the directions in the controller operator’s manual for setting the zero reading. 2. When the instructions call for applying zero air to the detector, turn the regulator’s on/off knob counterclockwise to open it. 3. Allow the gas to flow for two minutes. 4.
Parts List Table 5 lists replacement parts and accessories for the H2S detector.
