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14 • 35-3010A-12 Sample-Draw Detector

8.

Connect the drain wire to an available chassis ground at the device end. RKI controllers 
typically have a ground stud that can be used to ground the cable’s drain wire.

Figure 6:  External (Field) Wiring, Sample-Draw Detector

H2S
(Controller Transmitter 
Terminals)

4/20 Feedback

24 VDC +

Interconnect Terminal Strip

CO

(Controller Transmitter 

Terminals)

24 VDC +

S (4/20 mA)

4-20 (Feedback)

24 VDC

-

+

Oxygen

(Controller Transmitter 

Terminals)

Main Circuit Board

Sample Draw Housing

Содержание 35-3010A-12

Страница 1: ...www rkiinstruments com 35 3010A 12 Sample Draw Detector Part Number 71 0500 Revision P1 Released 7 17 19...

Страница 2: ...c 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 typ...

Страница 3: ...ment 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 EXP...

Страница 4: ...Reading 16 Operation 17 Normal Operation 17 Low Flow Alarm 17 Maintenance 17 Preventive Maintenance 17 Troubleshooting 18 Replacing Components of the Sample Draw Detector 19 Adjusting the Low Flow Set...

Страница 5: ...010A 12 and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the 35 3010A 12 as described in this manual Table 1 Specifications Target Gases Detection Ranges Oxyg...

Страница 6: ...tches on the right side Four mounting feet are attached to the back of the housing one at each corner Use the mounting feet to install the housing to a vertical surface Use the two conduit hubs on the...

Страница 7: ...le to enter the sample draw detector The INLET fitting accepts 1 4 in rigid tubing See Installation on page 12 for instructions to connect tubing to the INLET fitting Hydrophobic Filter The hydrophobi...

Страница 8: ...a flow of 0 6 SCFH the optimum flow rate is 1 2 SCFH Bypass Valve The bypass valve is to the left of the flowmeter The bypass valve adjusts the flow rate to the sensor Use a flat blade screwdriver to...

Страница 9: ...rbon monoxide gas sensor is installed in the upper left side of the larger flow block It has 4 pins which mate with sockets in the preamp circuit board Hydrogen Sulfide Gas Sensor The hydrogen sulfide...

Страница 10: ...ransmitter intercon nect terminal strip They are labeled TP and TP A 100 mV 500 mV output is available at these test points for use during calibration Preamp Circuit Board The preamp circuit is used t...

Страница 11: ...ents to gas response readings and the zero pot to make adjustments to the zero reading The test points are labeled CAL 1 and CAL 1 for the CO channel and CAL 2 and CAL 2 for the H2S channel A 100 mV 5...

Страница 12: ...m to open the housing door and make wiring connections at the bottom of the housing and tubing connections at the right of the housing Make sure there is sufficient room to perform start up maintenanc...

Страница 13: ...he incoming sample line as short as possible 3 Attach rigid sample tubing to the EXHAUST fitting 4 Route the opposite end of the tubing to an open area where the sample can safely disperse Wiring the...

Страница 14: ...d stud that can be used to ground the cable s drain wire Figure 6 External Field Wiring Sample Draw Detector H2S Controller Transmitter Terminals 4 20 Feedback 24 VDC Interconnect Terminal Strip CO Co...

Страница 15: ...nternal Factory Wiring White ZER O O X Y T P BAT T T P F B 4 20 2 4V BK G SPA N T O X IC T O X IC O X Y RD W CO Pump Factory Wired Pressure Switch Factory Wired H2S Oxygen Sensor Green CO and H2S Sens...

Страница 16: ...set switch and verify the flowmeter returns to a normal flow rate Setting the Zero Reading CAUTION If you suspect the presence of combustible gas hydrogen sulfide carbon monoxide or an abnormal oxygen...

Страница 17: ...nd restart the pump with the pump reset switch A flow reduction can be caused by a flow blockage a leak in the flow system a malfunctioning pressure switch or a malfunctioning pump NOTE There is no fl...

Страница 18: ...rrect flow rate check the sample lines for obstructions or kinks 3 Verify that the sensor and transmitter wiring are correct and secure Installation on page 12 describes detector wiring connections 4...

Страница 19: ...then lift the plate connector and sensor out of the housing 4 Unplug the connector from the socket that leads from the sensor 5 Plug the socket of the replacement sensor into the connector 6 Place the...

Страница 20: ...or of the sample draw detector 3 Unscrew the 5 screws that retain the preamp circuit board 4 Lift the preamp circuit board away from the flow block Be careful not to pull on the cables that connect th...

Страница 21: ...mp 4 Remove the rubber seals from each end of the charcoal filter and remove the filter 5 Place the new charcoal filter in the same orientation as the one that was removed 6 Place the new charcoal fil...

Страница 22: ...are for calibration set the zero reading set the fresh air reading and return to normal operation NOTE This procedure describes calibration using a demand flow regulator a zero air calibration cylinde...

Страница 23: ...UTION This procedure may cause alarms at the controller Take appropriate action to avoid this such as entering the calibration mode at the controller NOTE If you can verify a fresh air environment it...

Страница 24: ...channel plug the voltmeter leads into the test points in the AMP 2 section of the main circuit board Plug the positive lead into the test point labeled CAL 2 plug the negative lead into the test poin...

Страница 25: ...mV output on the AMP 2 test points for H2S and verify that the reading matches the response reading 2 mV you determined earlier 7 If necessary use the AMP 2 span pot to adjust the reading to match th...

Страница 26: ...33 0171RK Hydrophobic filter AcroPak 33 6095RK Charcoal filter CF 188 65 0601RK Oxygen sensor 81 0076RK 01 Zero air calibration cylinder 34 liter steel 81 0154RK 04 4 gas calibration gas cylinder 50 L...

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