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RKI Instruments, Inc.

www.rkiinstruments.com

61-1020/61-0230

Molecular Property Spectrometer

Combustible Gas Detector

Operator’s Manual

Part Number: 71-0592

Revision: P2

Released: 10/14/22

TM

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Содержание 61-0230

Страница 1: ...RKI Instruments Inc www rkiinstruments com 61 1020 61 0230 Molecular Property Spectrometer Combustible Gas Detector Operator s Manual Part Number 71 0592 Revision P2 Released 10 14 22 TM ...

Страница 2: ...dily 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 For most applications typical calibration frequencies are between 6 and 12 months but can be more often or less often based on your usa...

Страница 3: ...l This warranty indicates the full extent of our liability and we are not responsible for removal or replacement costs local repair costs transportation costs or contingent expenses incurred without our prior approval THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS EXPRESSED OR IMPLIED AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RKI INSTRUMENTS IN...

Страница 4: ...e Combustible Gas Detector 8 Wiring the Combustible Gas Detector to a Controller 9 Startup 11 Introducing Incoming Power 11 Setting the Zero Reading 11 Maintenance 12 Preventive Maintenance 12 Troubleshooting 12 Replacing the Detector 13 Calibration Frequency 14 Calibration 15 Materials 15 Preparing for Calibration 15 Setting the Zero Reading 16 Setting the Response Reading 16 Parts List 17 ...

Страница 5: ...rd all references to the junction box and junction box terminal block Specifications Table 1 specifies the detection range and accuracy for the 14 gases that the MPS sensor can reliably detect at the same time Table 1 Detection Ranges and Accuracy Target Gas Formula Detection Range Accuracy 0 to 50 LEL Butane C4H10 0 100 LEL 5 LEL Ethane C2H6 0 100 LEL 5 LEL Hydrogen H2 0 100 LEL 5 LEL Isobutane H...

Страница 6: ...oning is a common problem High humidity environments where catalytic or IR sensors may not hold up Environments more likely to have mixtures of hydrocarbons present Table 2 Specifications Target Calibration Gas With Junction Box 61 0230 CH4 Methane 61 0230 HC General hydrocarbons propane calibration standard Without Junction Box 61 1020 CH4 Methane 61 1020 HC General hydrocarbons propane calibrati...

Страница 7: ...ith a hydrophobic film that repels liquids is on one end of the detector and allows sample gas to enter the detector Four color coded leads red white green and black extend from the other end of the detector Use the leads when connecting the detector to the terminal block in the junction box Junction Box The junction box allows installation of the detector at a mounting site that is remote from th...

Страница 8: ...ct a mounting site that is representative of the monitoring environment Consider the following when selecting the mounting site Select a site where the detector is not likely to be bumped or disturbed Make sure there is sufficient room to perform start up maintenance and calibration procedures Select a site where the target gas is likely to be found first For lighter gases mount the detector near ...

Страница 9: ...r shielded cable or four wires in conduit through the unused conduit hub of the junction box Use appropriate conduit fittings and construction technique for the environmental rating and hazardous location classification of the junction box The junction box is rated 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 CAUT...

Страница 10: ... 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 Red White Green Black White Green Red Detector Wires Black Terminal Strip J Box Controller LEL Detector Terminals MPS LEL Detector Cable Shield ...

Страница 11: ...ustible gas during the 2 minute warmup period Exposing the sensor to gas during this period will result in a failure condition Setting the Zero Reading CAUTION If you suspect the presence of combustible gas in the monitoring environment use a zero air calibration cylinder to introduce fresh air to the detector and verify an accurate zero reading 1 Verify that the detector is in a fresh air environ...

Страница 12: ...blems you may encounter with the combustible gas detector NOTE This troubleshooting guide describes detector problems only See the controller operator s manual for problems you may encounter with the controller Table 3 Troubleshooting the Combustible Gas Detector Condition Symptom s Probable Causes Recommended Actions Fail Condition Controllerindicates a fail condition The detector wiring is disco...

Страница 13: ...led 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 Slow or No Response Diffi cult or Unable to Calibrate Unable to accurately set the zero or response reading during c...

Страница 14: ...einstall the junction box cover For detectors connected directly on a controller close the controller door 10 Turn on power to the controller 11 Turn on the controller 12 Calibrate the replacement detector as described in Calibration on page 15 Calibration Frequency Although there is no particular calibration frequency that is correct for all applications a calibration frequency of every 6 months ...

Страница 15: ...not operating in a fresh air background consult RKI 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 CH4 calibration cylinder in a background of real air which contains argon and CO2 a 0 5 LPM fixed flow regulator with an on off knob a calibration cup for the...

Страница 16: ...directions in the controller s operator s manual for setting the response 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 5 After se...

Страница 17: ...egulator 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 aluminum 58 liter 103 liter calibration cylinders cylinders with internal threads 81 1103RK Calibration cup 81 9070RK 03 Calibration cylinder 50 LEL methane in air 10...

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