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2 • 35-3001A-09 Oxygen/Hydrogen Sulfide Sample-Draw Detector

Description

This section describes the components of the oxygen/hydrogen sulfide sample-draw detector.

Figure 1: Oxygen/Hydrogen Sulfide Sample-Draw Detector Component Location

External Components

This section describes the sample-draw detector’s external components.

Housing

The sample-draw detector’s fiberglass housing is weather- and corrosion-resistant. It is suitable for

H2S Ampli fi er

H2S Sensor
(inside bl ock)

Pump

Pump Connector

Oxygen Sensor
Terminal Stri p

Mounting
Foot, 4X

Oxygen Ampli fi er

OXY

T OXIC

SIG/PWR

H2S Flow
Block

Oxygen
Sensor

AMP

AMP 2

OXY

Fail LED

Pilot LED

Sensor Flow

Control Valve

Hydrophobic

Filter

Pressure Switch

Adjustment Screw

(behind PCB)

Pump Reset

Swi tch

Flowmeter

OXY

3/4" Conduit Hub

AMP 2

AMP 1

Flow Baffle

This End To

Inlet Fitting

O
X
Y
G
E
N

Particle Filter

Oxygen Flow
Block

Interconnect
Terminal
Strip

Flowmeter Circuit

Board Connector

LEL/ IR

Inlet

Fitting

LEL/ IR

Exhaust

Fitting

EXHAUST

INLET

Detector/Amp
Terminal S tri p
(Factory Wir ed)

Содержание 35-3001A-09

Страница 1: ...www rkiinstruments com 35 3001A 09 Oxygen Hydrogen Sulfide Sample Draw Detector Operator s Manual Part Number 71 0311RK Revision A Released 8 8 17...

Страница 2: ...eath 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...

Страница 3: ...l 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 REPRESE...

Страница 4: ...ing the Zero Reading 12 Maintenance 13 Preventive Maintenance 13 Troubleshooting 15 Replacing Components of the Sample Draw Detector 16 Adjusting the Low Flow Setting 19 Removing the Particle Filter s...

Страница 5: ...he risk of personal injury Be sure to maintain and periodically calibrate the 35 3001A 09 as described in this manual Table 1 Specifications Target Gases and Detection Range Oxygen 0 25 volume Hydroge...

Страница 6: ...H2S Amplifier H2S Sensor inside block Pump Pump Connector Oxygen Sensor Terminal Strip Mounting Foot 4X Oxygen Amplifier S OXY T O XIC SIG PWR B G H2S Flow Block Oxygen Sensor S AMP AMP 2 S OXY R Fai...

Страница 7: ...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 of th...

Страница 8: ...e Installation section on page 8 for all wiring procedures related to the sample draw detector Pump Connector The pump connector is the two point connector below the oxygen terminal strip in the upper...

Страница 9: ...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 p...

Страница 10: ...clockwise 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...

Страница 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...

Страница 12: ...ollowing 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 perfo...

Страница 13: ...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 ma...

Страница 14: ...priate 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...

Страница 15: ...s manual and the controller detector head specification sheet for the 35 3001A 09 for detector terminal strip connections specific to the controller Figure 6 Wiring the Sample Draw Detector to a Cont...

Страница 16: ...ondition at the sample draw detector and a fail condition at the controller Be sure to put the controller into its calibration program or disable external alarms before performing this test 7 Verify t...

Страница 17: ...ace components of the sample draw detector adjust the low flow setting and remove the particle filter s tubing stub Preventive Maintenance This section describes a preventive maintenance schedule to e...

Страница 18: ...ulator into the hydrogen sulfide calibration cylinder 2 Connect the calibration tubing from the demand flow regulator to the inlet fitting Gas will begin to flow 3 After approximately one minute verif...

Страница 19: ...the correct flow rate with the sensor flow control valve 2 If you cannot set the correct flow rate check the sample lines for obstructions or kinks 3 Verify that the sensor wiring is correct and secur...

Страница 20: ...controller 3 Open the housing door of the sample draw detector 4 Loosen the two screws on the oxygen terminal strip and remove the lugs and wires from the terminal strip 5 Unscrew and remove the two s...

Страница 21: ...power to the controller 3 Open the housing door of the sample draw detector 4 Remove the detector and controller plug in terminal strips by grasping the sides of the strips with your fingers Let the t...

Страница 22: ...sensor off of the flow block 6 Disconnect the sensor from the H2S amplifier 7 Plug the H2S sensor into the new H2S amplifier 8 Place the sensor and amplifier in the H2S sensor cavity 9 Secure the H2S...

Страница 23: ...stall the tubing routed to the sampling area 4 If the particle filter is installed at the end of the inlet line 1 Remove the particle filter from the tubing stub 2 Install the new particle filter onto...

Страница 24: ...mes factory installed in the particle filter It is used for connecting the particle filter to the inlet fitting If you have installed the particle filter and no longer want it installed you will need...

Страница 25: ...an every 3 months may be necessary Calibration Oxygen Sensor This section describes how to calibrate the oxygen sensor in the sample draw detector It includes procedures to prepare for calibration set...

Страница 26: ...H2S in nitrogen to zero the oxygen sensor 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 Verify a volt...

Страница 27: ...ple Output mV calibrating sample fullscale X 400 100 For example with a test sample of 25 ppm and a fullscale setting of 100 ppm the correct output is 200 mV 200 mV 25 100 X 400 100 Setting the Zero R...

Страница 28: ...reading 6 Disconnect the sample tubing from the inlet line 7 Unscrew the regulator from the hydrogen sulfide calibration cylinder Returning to Normal Operation 1 Wait approximately one minute to allo...

Страница 29: ...Particle filter 57 0140RK H2S amplifier 57 1064RK 11 Oxygen amplifier 71 0311RK Operator s Manual 35 3001A 09 Sample Draw Detector 81 0076RK 01 Zero air calibration cylinder 34 liter steel 81 0076RK 0...

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