Related Manuals for RKI Instruments 65-2425
Summary of Contents for RKI Instruments 65-2425
- Page 1 65-2425 Hydrogen Cyanide Detector Operator’s Manual Part Number: 71-0623 Revision: P1 Released: 1/17/23 RKI Instruments, Inc. www.rkiinstruments.com...
- Page 2 Typical calibration frequencies for most applications are between 3 and 6 months, but can be required more often or less often based on your usage. 2 • 65-2425 Hydrogen Cyanide Detector Operator’s Manual...
- 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
Parts List ............18 4 • 65-2425 Hydrogen Cyanide Detector Operator’s Manual... -
Page 5: Overview
Overview This manual describes the 65-2425 hydrogen cyanide (HCN) 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 HCN detector. -
Page 6: Description
WARNING: When using the 65-2425, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 65-2425 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 65- 2425 as described in this manual. -
Page 7: Rubber Boot And Spacer
• Select a site where the target gas is likely to be found first. NOTE: If your application does not require a specific mounting site, mount the detector at approximately breathing level. 65-2425 Hydrogen Cyanide Detector Operator’s Manual Installation • 7... -
Page 8: Wiring The Hcn Detector To A Controller
Wiring the HCN 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. 8 • Installation 65-2425 Hydrogen Cyanide Detector Operator’s Manual... - Page 9 8. Route the cable or wires leading from the HCN detector through one of the conduit hubs at the controller housing. CAUTION: Do not route power and detector wiring through the same conduit hub. The power cable may disrupt the transmission of the detector signal to the controller. 65-2425 Hydrogen Cyanide Detector Operator’s Manual Installation • 9...
- Page 10 10. If shielded cable is used, connect the cable’s drain wire to an available chassis (earth) ground at the controller. RKI controllers typically have a ground stud that can be used to ground the cable’s drain wire. 11. Reinstall the junction box cover. 10 • Installation 65-2425 Hydrogen Cyanide Detector Operator’s Manual...
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Page 11: Startup
If the display reading is 0 ppm HCN, start up is complete. The detector is in normal operation. If the display reading is not 0 ppm HCN, continue with step 3. 3. Perform a zeroing operation at the controller. See the controller operator’s manual for directions. 65-2425 Hydrogen Cyanide Detector Operator’s Manual Start Up • 11... -
Page 12: Maintenance
• The transmitter’s zero described later in this section. reading is low enough 4. If the fail condition continues, to cause a fail contact RKI for further instruction. condition. • The detector is malfunctioning. 12 • Maintenance 65-2425 Hydrogen Cyanide Detector Operator’s Manual... -
Page 13: Replacing Components Of The Hcn Detector
6. Remove the replacement sensor from its packaging and remove the wire jumper. This wire jumper is installed on the sensor pins for shipment or storage but must be removed for the sensor to operate properly when installed in a detector. 65-2425 Hydrogen Cyanide Detector Operator’s Manual Maintenance • 13... - Page 14 8. Plug the sensor back into the four-socket pattern in the detector housing body. 9. Make sure the cap gasket is in place and screw the detector housing cap back onto the detector housing body. 10. Turn on power to the controller. 14 • Maintenance 65-2425 Hydrogen Cyanide Detector Operator’s Manual...
- Page 15 10. Turn on the controller. CAUTION: Allow the replacement detector to warm up for 15 minutes before you continue with the next step. 11. Calibrate the replacement detector as described in “Calibration” on page 16. 65-2425 Hydrogen Cyanide Detector Operator’s Manual Maintenance • 15...
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Page 16: Calibration Frequency
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. -
Page 17: Setting The Response Reading
2. Verify that the controller display reading decreases and stabilizes at 0 ppm HCN. 3. Store the components of the calibration kit in a safe and convenient place. 65-2425 Hydrogen Cyanide Detector Operator’s Manual Calibration • 17... -
Page 18: Parts List
65-2049-01 HCN replacement sensor, with membrane 65-2425 HCN replacement detector assembly (includes sensor) 71-0623 65-2425 HCN Detector Operator’s Manual (this document) 81-0064RK-04 Calibration cylinder, 10 ppm HCN in nitrogen, 34 liter aluminum 81-0076RK Zero air calibration cylinder, 17 liter 81-0076RK-01...
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