RKI Instruments 35-3001A-04-03 Page 1 Operator'S Manual Download

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35-3001A-04-03 Carbon Monoxide

Sample-Draw Detector

Operator’s Manual

Part Number: 71-0476

Revision: P1

Released: 11/28/18

Summary of Contents for 35-3001A-04-03

Page 1: ...www rkiinstruments com 35 3001A 04 03 Carbon Monoxide Sample Draw Detector Operator s Manual Part Number 71 0476 Revision P1 Released 11 28 18 ...

Page 2: ...th 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 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 ...

Page 3: ... 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 INC INCLUDING BUT NOT LIMITED TO THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOS...

Page 4: ... to a Controller 14 Start Up 16 Introducing Incoming Power 16 Setting the Zero Reading 17 Low Flow Contact Operation 17 Maintenance 18 Preventive Maintenance 18 Troubleshooting 18 Replacing Components of the Sample Draw Detector 20 Adjusting the Low Flow Setting 23 Removing the Particle Filter s Tubing Stub if Necessary 24 Calibration Frequency 25 Calibration 25 Preparing for Calibration 25 Settin...

Page 5: ...nual to assure proper and safe operation of the 35 3001A 04 03 and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the 35 3001A 04 03 as described in this manual Table 1 Specifications Target Gas and Detection Range Carbon Monoxide 0 300 ppm Input Power 24 VDC Nominal 18 5 VDC 30 VDC Construction housing Fiberglass polyester NEMA 4X Dimensions 8 5 in H x 6 5 ...

Page 6: ... 4X W SPAN ZERO B SIG PWR S Charcoal Filter CO Detector CO Flow Block _ O X Y G E N AM P 2 OXY S AM P S Pilot L ED Fail LED Sensor Flow Control Valve Pressure Switch Adjustment Screw behind P CB Flowmeter Interconnect Terminal Strip 3 4 Conduit Hub Detector Amp Terminal Strip S OXY G W AM P 2 S AM P 1 Flowmeter Circuit Board Connector LOW FLOW Exhaust Fitting Inlet Fitting Particle Filter This E n...

Page 7: ...s accept 1 4 in rigid tubing See the Installation section on page 12 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 it is not factory installed If the particle filter is installed directly to the inlet fitting the tubing stub must be used If the particle filter is installed somewhere else like at the end o...

Page 8: ...e draw detector Pump Connector The pump connector is the two point connector below the oxygen sensor terminal strip in the upper right corner of the main circuit board Use the pump connector to connect the pump to the main circuit board NOTE The pump is factory wired to the main circuit board See Installation on page 12 for all wiring procedures related to the sample draw detector Flowmeter Circui...

Page 9: ...troller The low flow level is factory set at 0 6 SCFH 0 1 SCFH See Adjusting the Low Flow Setting on page 23 to adjust this setting Pump Reset Switch The pump reset switch is located to the left of the status LEDs When a low flow condition occurs the pump will 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 ...

Page 10: ... housing includes a four socket pattern This socket pattern accepts the sensor s four pins to secure the sensor within the detector housing A pre amplifier located between the sockets and two interconnect wires conditions the sensor s signal before the signal reaches the amplifier Plug In CO Sensor The sensor has four pins that secure it to the detector housing body Through a series of chemical an...

Page 11: ...ewdriver to turn the zero pot s adjustment screw and adjust the amplifier s zero CO free output during the start up and calibration procedure Turn the adjustment screw clockwise to increase the zero output and counterclockwise to decrease the zero output Span Pot The span pot is located to the right of the zero pot see Figure 4 Use a small flat blade screwdriver to turn the span pot s adjustment s...

Page 12: ...lowing 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 perform start up maintenance and calibration procedures Are the flowmeter and status LEDs visible Figure 5 Outline and Mounting Dimensions Ø 30 x 50 4X MOUNTING 78 1 13 40 Pilot Fail 85 80 4 50 NOTE Housing ...

Page 13: ...ent of the 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 may be used RKI Instruments Inc recommends using either 1 4 O D x 1 8 I D or 1 4 O D x 0 170 I D tubing based on your length requirements See Specifications on page 5 for maximum tubing length...

Page 14: ...ate 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 on page 24 for the arrangement of the fitting components 4 Route the opposite end of the tubing to an open area where the sample can safely disperse or to an exhaust duct See Specifications on page 5 for...

Page 15: ...g the Sample Draw 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 used to ground the cable s drain wire Not Used in This V ersion S SPAN SIG PWR ZERO OX Y AM P 1 LOW FLO W OX Y AMP 1 AM P 2 Controller or Recording Device 24 VDC AM P 2 Red W hite 4 20 S...

Page 16: ...w rate of approximately 1 0 SCFH If necessary use the sensor flow control valve to adjust the flow rate Turn the valve s knob counterclockwise to increase the flow and clockwise to decrease the flow NOTE The following step tests for leaks in the sample line This test will cause a low flow condition at the sample draw detector and a fail condition at the controller Be sure to put the controller int...

Page 17: ...Plug the positive lead into the red test point plug the negative lead into the black test point 5 Verify a voltmeter reading of 100 mV 2 mV 6 If necessary use a small flat blade screwdriver to adjust the zero potentiometer until the voltmeter reading is 100 mV 2 mV 7 Remove the voltmeter leads from the test points 8 Close the housing door Low Flow Contact Operation The low flow contact is closed d...

Page 18: ...on on page 25 Troubleshooting The troubleshooting guide describes symptoms probable causes and recommended action for problems you may encounter with the sample draw detector NOTE This troubleshooting guide describes sample draw detector problems only See the controller Operator s Manual if the controller exhibits any problems Fail Condition Symptoms The sample draw detector s Fail LED is on The m...

Page 19: ...or is malfunctioning Recommended action 1 Verify that the calibration cylinder contains an adequate supply of a fresh test sample 2 If a demand flow regulator calibration kit is used use a different demand flow regulator to determine if the original one is functioning properly 3 If necessary set the correct flow rate with the sensor flow control valve 4 If you cannot set the correct flow rate chec...

Page 20: ...s socket on the amplifier 12 Close and latch the housing door 13 Turn on power to the controller 14 Turn on the controller 15 Allow the sample draw detector to warmup for 5 minutes 16 Calibrate the replacement sensor as described in Calibration on page 25 Replacing the CO Detector Housing Body NOTE In most cases it is not necessary to replace the detector housing body 1 Turn off the controller 2 T...

Page 21: ...the old amplifier 7 Place the new amplifier in the same position as the old amplifier See Figure 1 8 Reinstall the screw lock washer and flat washer you removed in Step 5 9 Install the detector and controller terminal strips into their sockets on the new amplifier as shown in Figure 6 on page 15 If any leads were removed during this procedure refer to Figure 6 on page 15 for the detector and ampli...

Page 22: ...s connected to the inlet fitting 6 Turn on power to the controller 7 Turn on the controller and place it into normal operation 8 Verify that the flow rate is approximately 1 0 SCFH then close the housing door Replacing the Particle Filter 1 Turn off the controller 2 Turn off power to the controller 3 If the particle filter is installed at the inlet fitting 1 Disconnect the tubing routed to the sam...

Page 23: ...urn clockwise then attempt to set the flow again Repeat this step until you are able to adjust the flow to 0 6 SCFH NOTE The pressure switch adjustment screw is accessible through a circular cutout in the flowmeter circuit board 2 Slowly turn the pressure switch adjustment screw counterclockwise just until the sample draw detector goes into low flow alarm 3 Turn the sensor flow control valve s kno...

Page 24: ...uld 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 27 for the spare part number 3 Push the tubing stub up and out of the front ferrule being careful not to lose the ferrule set If you do lose the ferrule set or if it is damaged see Parts List on page 27 for the spare part numbe...

Page 25: ...t includes procedures to prepare for calibration set the zero reading set the response reading and return to normal operation NOTE Calibrating the sample draw detector may cause alarms Be sure to put the controller into its calibration program or disable external alarms before continuing NOTE This procedure describes calibration using a demand flow regulator Preparing for Calibration NOTE If you c...

Page 26: ...ading 1 Screw the demand flow regulator onto the carbon monoxide calibration cylinder 2 Connect the sample tubing from the regulator to the inlet line 3 Allow the sample draw detector to draw the calibrating sample for 1 minute 4 When the reading on the voltmeter stabilizes verify that the reading matches the response reading 2 mV you determined earlier 5 If necessary use the span potentiometer on...

Page 27: ...Particle filter 33 6098 Charcoal filter 57 1064RK 13 Amplifier 65 2408 CO replacement detector housing body does not include plug in sensor rubber boot or spacer 71 0476 Operator s Manual 35 3001A 04 03 Carbon Monoxide Sample Draw Detector 81 0064RK 01 Calibration cylinder 50 ppm CO in air 34 liter steel 81 0064RK 03 Calibration cylinder 50 ppm CO in air 103 liter 81 0076RK 01 Zero air calibration...

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