RKI Instruments 35-3001A-02 Operator'S Manual Download Page 1

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35-3001A-02 Oxygen

Sample-Draw Detector

Operator’s Manual

Part Number: 71-0308RK

Revision: A

Released: 8/8/17

Summary of Contents for 35-3001A-02

Page 1: ...www rkiinstruments com 35 3001A 02 Oxygen Sample Draw Detector Operator s Manual Part Number 71 0308RK Revision A Released 8 8 17 ...

Page 2: ...iodic 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: ...placement 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 PURPOSE IN N...

Page 4: ...ector to a Controller 9 Start Up 11 Introducing Incoming Power 11 Setting the Fresh Air Reading 11 Maintenance 12 Preventive Maintenance 12 Troubleshooting 13 Replacing Components of the Sample Draw Detector 14 Adjusting the Low Flow Setting 16 Removing the Particle Filter s Tubing Stub if Necessary 17 Calibration Frequency 18 Calibration 18 Preparing for Calibration 18 Setting the Fresh Air Readi...

Page 5: ...to assure proper and safe operation of the 35 3001A 02 and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the 35 3001A 02 as described in this manual Table 1 Specifications Target Gas and Detection Range Oxygen 0 25 volume Input Power 24 VDC Nominal 18 5 VDC 30 VDC Construction housing Fiberglass polyester NEMA 4X Dimensions 8 5 in H x 6 5 in W x 4 25 in D W...

Page 6: ...Sensor Oxygen Flow Block Pilot LED Fail LED Sensor Flow Control Valve B Interconnect Terminal Strip Pump Reset Switch Flowmeter OXY G W R G S S AMP 2 AMP 1 W Hydrophobic Filter LEL IR Flowmeter Circuit Board Connector Particle Filter Exhaust Fitting Inlet Fitting This End To Inlet Fitting 3 4 Conduit Hub Pump T O XIC EXHAUST INLET Pump Connector Oxygen A mplifier OXY R S B G Pressure Switch Adjust...

Page 7: ...mple fittings accept 1 4 in rigid tubing See the Installation section on page 7 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 a...

Page 8: ...gen sensor to the main circuit board NOTE The oxygen sensor is factory wired to the main circuit board See the Installation section on page 7 for all wiring procedures related to the sample 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 t...

Page 9: ...CFH See Adjusting the Low Flow Setting on page 16 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 Hydrophobic Filter The hydrophobic filter is located toward...

Page 10: ...ration procedure Turn the adjustment screw clockwise to increase the fresh air output and counterclockwise to decrease the fresh air output CAUTION The amplifier includes an additional pot It is factory set Do not adjust it Controller and Detector Terminal Strips The controller terminal strip and detector terminal strip are two and four position plug in style terminal strips respectively The contr...

Page 11: ...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 4 Outline and Mounting Dimensions Ø 30 x 50 4X MOUNTING 78 1 13 40 Pilot Fail 85 80 4 50 NOTE Housing is4 3 i...

Page 12: ... 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 1 for maximum tubing lengths based on tubing ...

Page 13: ...sert 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 6 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 1 for maximum tubing l...

Page 14: ...ons specific to the controller Figure 5 Wiring 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 S SI G PW R OX Y AMP 2 LEL IR OXY P A T S 2 0 1 P A T S 2 0 1 AMP 1 OXY LEL IR AMP 1 AMP 2 Controller o...

Page 15: ...his test 7 Verify that the incoming sample line is not leaking To test the sample line press and hold the reset switch and plug the open end of the sample line with your thumb If the flowmeter ball drops to the bottom of the flowmeter the incoming sample line is not leaking 8 Remove your thumb from the sample line release the reset switch and verify the flowmeter returns to a normal flow rate 9 En...

Page 16: ...ase the flow 3 Verify a display reading of 20 9 at the controller Investigate significant changes in the display reading Monthly Response Test This procedure describes a test to verify that the sample draw detector responds properly to the target gas NOTE To reduce the response time of this test use a short incoming sample line If the sample draw detector s sample line is long connect a shorter li...

Page 17: ...ng device is operating properly but indicates a reading well below zero Probable causes The sample draw detector s flow rate is too low because of an obstructed sample line failed pump etc The sample draw detector is malfunctioning The sensor wiring is disconnected or misconnected Recommended action 1 At the sample draw detector set the correct flow rate with the sensor flow control valve 2 If you...

Page 18: ...ion Replacing Components of the Sample Draw Detector This section includes procedures to replace the oxygen sensor amplifier hydrophobic filter and particle filter Replacing the Oxygen Sensor 1 Turn off the controller 2 Turn off power to the controller 3 Open the housing door of the sample draw detector 4 Loosen the two screws on the oxygen sensor terminal strip and remove the lugs and wires from ...

Page 19: ...kets on the new amplifier If controller leads or detector cable leads were removed from the plug in terminal strips during this procedure refer to Table 2 and Table 3 below NOTE When the sample draw detector is first powered up with a new amplifier the initial output may be either high or below zero depending on the setting of the span pot Be sure to make arrangements so that this does not cause u...

Page 20: ...nlet line 1 Remove the particle filter from the tubing stub 2 Install the new particle filter onto the tubing stub Be sure the arrow on the particle filter is pointing toward the inlet line 5 Turn on power to the controller 6 Turn on the controller Adjusting the Low Flow Setting NOTE Adjusting the low flow setting will cause a low flow alarm at the sample draw detector and a fail alarm at the cont...

Page 21: ... and no longer want it installed you will need to remove the particle filter s tubing stub from the inlet fitting and replace it with tubing Figure 6 Inlet Fitting with Tubing Stub CAUTION Do not pull the tubing stub downward to remove it 1 Remove the particle filter from its tubing stub 2 Unscrew the outside inlet fitting tube nut from the fitting body The tubing stub should come out with the tub...

Page 22: ...e oxygen sensor in the sample draw detector It includes procedures to prepare for calibration set the fresh air reading set the zero 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 reg...

Page 23: ...the regulator to the inlet line 3 Allow the sample draw detector to draw the calibrating sample for 1 minute 4 Verify a voltmeter reading of 100 mV 2 mV 5 If necessary use the zero potentiometer on the amplifier to adjust the reading to 100 mV 2 mV 6 Disconnect the sample tubing from the sample draw detector s inlet fitting 7 Reconnect the incoming sample line to the inlet fitting 8 Unscrew the re...

Page 24: ... 1016RK Pump 33 0165RK Hydrophobic filter 33 0167RK Particle filter 57 1064RK 11 Amplifier 71 0308RK Operator s Manual 35 3001A 02 Oxygen Sample Draw Detector 81 0076RK 01 Zero air calibration cylinder 34 liter steel 81 0076RK 03 Zero air calibration cylinder 103 liter 81 0078RK 01 Calibration cylinder 100 nitrogen 34 liter steel 81 0078RK 03 Calibration cylinder 100 nitrogen 103 liter 81 1054RK R...

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