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Summary of Contents for RKI Instruments 61-1020
- Page 1 61-1020/61-0230 Molecular Property Spectrometer Combustible Gas Detector Operator’s Manual Part Number: 71-0592 Revision: P2 Released: 10/14/22 RKI Instruments, Inc. www.rkiinstruments.com...
- Page 2 For most applications, typical calibration frequencies are between 6 and 12 months but can be more often or less often based on your usage. 2 • 61-1020/61-0230 Molecular Property Spectrometer Combustible Gas Detector...
- 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 two years 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 ............17 4 • 61-1020/61-0230 Molecular Property Spectrometer Combustible Gas Detector... -
Page 5: Overview
The 61-1020 combustible gas detector includes a junction box. This manual may also be used for the 61-0230 combustible gas detector which does not include a junction box and is normally mounted in one of a controller’s conduit hubs. - Page 6 • All other gases: 5% LEL WARNING: When using the 61-1020/61-0230, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 61-1020/61-0230 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 61-1020/61-0230 as described in this manual.
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Page 7: Description
(see Table 1), and does not require calibration as often as catalytic combustible sensors. This section describes the components of the 61-1020: the MPS LEL detector and the junction box. -
Page 8: Installation
Rubber Spacers, J-Box MPS LEL Detector Figure 2: Mounting the Combustible Gas Detector 2. At the selected mounting site, hang or mount the junction box with the detector facing down (see Figure 2). 8 • Installation 61-1020/61-0230 Molecular Property Spectrometer... -
Page 9: Wiring The Combustible Gas Detector To A Controller
NEMA 4X and classified explosion proof for Class I, Groups B, C, and D. 6. Connect the wires to the terminal block in the junction box. CAUTION: Leave the shield drain wire insulated and disconnected at the 61-1020. You will connect the opposite end of the cable’s drain wire at the controller. - Page 10 Figure 3: Wiring the Combustible Gas Detector to a Controller 10. If using a 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 • Installation 61-1020/61-0230 Molecular Property Spectrometer...
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Page 11: Startup
If the MPS sensor is not operating in a fresh air background, consult RKI Instruments Inc. before zeroing the sensor. 2. Verify a reading of 0% LEL at the controller. If the display reading is 0% LEL, start up is complete. -
Page 12: Maintenance
4. If the fail condition continues, exposed to gas replace the detector. during its 2 minute 5. If the fail condition continues, warmup period. contact RKI for further • The detector is instruction. malfunctioning. 12 • Maintenance 61-1020/61-0230 Molecular Property Spectrometer... -
Page 13: Replacing The Detector
7. If the detector is installed remotely from the controller in a junction box, use a sealant that is designed for explosion proof installations. If the detector is installed directly on the controller, apply any thread sealant appropriate for the application’s environmental rating to the hub and/or detector head. 61-1020/61-0230 Molecular Property Spectrometer Maintenance • 13... -
Page 14: Calibration Frequency
Although there is no particular calibration frequency that is correct for all applications, a calibration frequency of every 6 months is adequate for most MPS combustible gas transmitter applications. Unless experience in a particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of every 6 months. -
Page 15: Calibration
Instruments Inc. before calibrating the sensor. Materials Before calibration of the detector, the following items are required: • a zero air calibration cylinder provided by RKI Instruments Inc. • a CH calibration cylinder (in a background of real air which contains argon and CO2) •... -
Page 16: Setting The Zero Reading
(span). 2. When the directions call for exposing the detector to gas, screw the regulator into the methane in real air cylinder provided by RKI Instruments Inc. 3. Turn the on/off knob counterclockwise to open the regulator. 4. Allow the gas to flow to the detector for 1 minute before continuing with the directions. -
Page 17: Parts List
Parts List Table 4 lists replacement parts and accessories for the 61-1020 combustible gas detector. Table 4: Parts List Part Number Description 18-0400RK-01 Junction box with spacers 61-0230 MPS LEL detector 71-0592 61-1020/61-0230 Combustible Gas Detector Operator’s Manual (this document) 81-1050RK Regulator, with gauge and knob, 0.5 liter/minute continuous flow, for 17 liter...
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