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www.rkiinstruments.com

35-3001A-08-03

Methane/Carbon Monoxide

Sample-Draw Detector

Operator’s Manual

Part Number: 71-0412

Revision: 0 

Released: 8/8/17

Summary of Contents for 35-3001A-08-03

Page 1: ...www rkiinstruments com 35 3001A 08 03 Methane Carbon Monoxide Sample Draw Detector Operator s Manual Part Number 71 0412 Revision 0 Released 8 8 17...

Page 2: ...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...

Page 3: ...val 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 REPRE...

Page 4: ...tting the Zero Reading 13 Maintenance 13 Preventive Maintenance 13 Troubleshooting 15 Replacing Components of the Sample Draw Detector 16 Adjusting the Low Flow Setting 20 Removing the Particle Filter...

Page 5: ...injury Be sure to maintain and periodically calibrate the 35 3001A 08 03 as described in this manual Table 1 Specifications Target Gases and Detection Range Methane 0 100 volume Carbon Monoxide 0 300...

Page 6: ...k IR CH4 Sensor inside block Sensor Flow Control Valve Fail LED Pilot LED G B Flowmeter Pump Reset Switch AMP 2 S S AMP 1 W G OXY R AMP OXY AMP 2 This End To Inlet Fitting Hydrophobic Filter IR CH4 Fl...

Page 7: ...t 1 4 in rigid tubing See the Installation section on page 8 to connect tubing to the sample fittings Particle Filter A particle filter with a tubing stub on one end is shipped with the instrument but...

Page 8: ...of the sample draw detector Pump Connector The pump connector is the two point connector below the oxygen terminal strip in the upper right corner of the main circuit board Use the pump connector to...

Page 9: ...be shut off To reset the low flow condition and start the pump again press and hold the pump reset switch for about 2 seconds then release Hydrophobic Filter The hydrophobic filter is located toward t...

Page 10: ...djustment screw and adjust the amplifier s gas response output during the calibration procedure Turn the adjustment screw clockwise to increase the span output and counterclockwise to decrease the spa...

Page 11: ...adjustment screw and adjust the amplifier s zero output during the start up and calibration procedures Turn the adjustment screw clockwise to increase the zero output and counterclockwise to decrease...

Page 12: ...following when you select the mounting site Is there enough room to open the housing door and make wiring and tubing connections at the bottom of the housing Make sure there is sufficient room to perf...

Page 13: ...e fitting components 4 Connect a length of sample tubing to the other side of the particle filter and route it to the sampling area 1 4 O D rigid polypropylene Teflon or flexible polyurethane tubing m...

Page 14: ...opriate insert to seal the connection between the tubing and the inlet fitting 3 Hand tighten the nut on the exhaust fitting so the ferrules clamp on the tubing If the tube nut is removed see Figure 7...

Page 15: ...w Detector to a Controller 9 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 us...

Page 16: ...transmitter s 4 20 mA signal should be stable by the time the controller s warmup period is over 6 Verify that the flowmeter indicates a flow rate of approximately 1 0 SCFH If necessary use the sensor...

Page 17: ...ethane channel or 0 ppm for the CO channel continue with step 3 3 Perform a zero fresh air operation at the controller See Calibration IR CH4 Sensor on page 22 and Calibration CO Sensor on page 24 for...

Page 18: ...ion IR CH4 Sensor on page 22 or Calibration CO Sensor on page 24 then continue this procedure 2 Set a voltmeter to measure in the millivolt mV range 3 Open the housing door then plug the voltmeter lea...

Page 19: ...on CO Sensor on page 24 11 Unscrew the CO cylinder from the demand flow regulator 12 Remove the calibration tubing from the inlet fitting 13 Remove the voltmeter leads from the CO amplifier 14 Close t...

Page 20: ...used the demand flow regulator is not functioning properly The sample draw detector s flow rate is too low because of an obstructed sample line failed pump etc The sample draw detector is malfunctioni...

Page 21: ...ontroller plug in terminal strips by grasping the sides of the strips with your fingers Let the terminal strips hang by their connected wires while you replace the amplifier 5 Unscrew the screw in the...

Page 22: ...in place 5 Unplug the sensor from the CO amplifier 6 Verify that you are using the correct replacement sensor then plug the sensor into the CO amplifier 7 Place the sensor and amplifier in the CO sen...

Page 23: ...r 1 Turn off the controller 2 Turn off power to the controller 3 Open the housing door of the sample draw detector 4 Locate the charcoal filter It is at the top of the main circuit board 5 Pull the ch...

Page 24: ...le external alarms before performing this test The factory set low flow setting is 0 6 SCFH 0 1 To adjust the low flow setting 1 Use the sensor flow control valve to set the flow to 0 6 SCFH Turn the...

Page 25: ...should come out with the tube nut Be careful not to lose the O ring that may come out with the tubing stub If you do lose the O ring or if it is damaged see Parts List on page 26 for the spare part n...

Page 26: ...bration IR CH4 Sensor This section describes how to calibrate the IR CH4 sensor of the sample draw detector It includes procedures to prepare for calibration set the zero reading set the response read...

Page 27: ...alibration cylinder Setting the Response Reading 1 Screw the regulator into the methane calibration cylinder 2 Connect the sample tubing from the demand flow regulator to the sample draw detector s in...

Page 28: ...t points on the CO amplifier Plug the positive lead into the red amplifier test point plug the negative lead into the black amplifier test point 6 Use the following formula to determine the correct te...

Page 29: ...se the span potentiometer on the amplifier to adjust the reading to match the correct response reading 6 Disconnect the sample tubing from the sample draw detector s inlet fitting 7 Reconnect the inco...

Page 30: ...oal filter 61 5041RK CH4 Infrared CH4 sensor plug in type vol range 71 0412 Operator s Manual 35 3001A 08 03 Sample Draw Detector 81 0013RK 01 Calibration cylinder 50 volume methane in nitrogen 34 lit...

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