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RKI Instruments 35-3010RK-07, Руководство пользователя

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2 • 35-3010RK-07 Sample-Draw Detector

Description

This section describes the components of the 

35-3010RK-07 sample draw detector

. The sample 

draw detector consists of the housing, flow system, and detection system.

Figure 1:  Sample Draw Detector Component Location

Housing

The sample draw detector’s fiberglass housing is weather- and corrosion-resistant. It is 
suitable for installation where general purpose equipment is in use. The housing door is 
hinged on the left side and is secured by two latches 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 
bottom of the housing to make wiring connections.

An aluminum subpanel is mounted to the interior of the housing. The sample draw 
detector’s internal components are mounted to the subpanel.

Amp 2

IR CH4 
Sensor

Flow Block 
for IR CH4

Preamp
Circuit Board

Amp 1

Charcoal Filter

Hydrophobic Filter 

(AcroPak)

Flow Block for 
Oxygen and H2S

Pump

Oxygen Sensor

H2S Sensor

Dummy Plug for 
Combustible Sensor

Exhaust Fitting For 1/4" 

OD Rigid Tubing

3/4 Conduit Hub, 2X

Dummy Plug for 
CO Sensor

Inlet Fitting For 1/4" 

OD Rigid Tubing

Reset Switch

Main Circuit Board

Содержание 35-3010RK-07

Страница 1: ...www rkiinstruments com 35 3010RK 07 Sample Draw Detector Part Number 71 0214RK Revision B Released 9 10 12 ...

Страница 2: ...ic 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 ...

Страница 3: ...cement 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 NO E...

Страница 4: ...Low Flow Alarm 13 Maintenance 13 Preventive Maintenance 13 Troubleshooting 14 Replacing Components of the Sample Draw Detector 16 Adjusting the Low Flow Setting 17 Calibration Frequency 18 Calibration H2S Detector 18 Preparing for Calibration 18 Setting the Zero Reading 19 Setting the Response Reading 19 Returning to Normal Operation 19 Calibration IR CH4 Detector 20 Setting the Zero Reading 20 Se...

Страница 5: ...al to assure proper and safe operation of the 35 3010RK 07 and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the 35 3010RK 07 as described in this manual Table 1 Specifications Target Gases Detection Ranges Methane CH4 0 100 LEL Oxygen 0 25 volume Hydrogen Sulfide H2S 0 100 ppm Input Power 24 VDC Current Draw 200 mA Construction housing Fiberglass polyester...

Страница 6: ... 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 bottom of the housing to make wiring connections An aluminum subpanel is mounted to the interior of the housing The sample draw detector s internal components are mounted to the subpanel Amp 2 IR CH4 Sensor Flow Block for IR CH...

Страница 7: ...nter the sample draw detector The INLET fitting accepts 1 4 in rigid tubing See Installation on page 8 for instructions to connect tubing to the INLET fitting Hydrophobic Filter The hydrophobic filter is to the left of the main circuit board It is held in place by a metal clip It prevents water and other liquids from contaminating the flow system Replace the filter when it appears dirty discolored...

Страница 8: ...2 0 SCFH Standard Cubic Feet per Hour Although the sample draw detector will operate down to 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 adjust the bypass valve NOTE The bypass valve allows fine adjustments of the flow rate For a wider range of...

Страница 9: ...cable is wired to the main PCB Oxygen Sensor The oxygen sensor is installed in the lower right of the larger flow block It consists of a cylindrical body which houses the detection elements and a cable which terminates in a round 7 pin male connector The sensor connector mates to a 7 position socket that is wired to the main PCB CO Dummy Plug The CO sensor position in the flow block is occupied by...

Страница 10: ...ple draw detector to the controller Sensor Transmitter Terminal Strip The sensor transmitter terminal strip is the sixteen point terminal strip near the right edge of the circuit board Use the sensor transmitter terminal strip to connect sensors or transmitters to the main circuit board NOTE The sensors are factory wired to the sensor transmitter terminal strip See Wiring the Sample Draw Detector ...

Страница 11: ...mp terminal strip is the four point terminal in the top left corner of the circuit board Use the pump terminal strip to connect the pump and pressure switch to the main circuit board NOTE The pump and pressure switch are factory wired to the circuit board See Wiring the Sample Draw Detector on page 9 for all wiring procedures related to the sample draw detector Relay The relay is approximately in ...

Страница 12: ...ure there is sufficient room to perform start up maintenance and calibration procedures Figure 4 Mounting the Sample Draw Detector 2 Close and latch the housing door NOTE The sample draw detector is shipped with the mounting feet tucked under the housing to protect the mounting feet during shipment 3 Slightly loosen the screw that secures one of the mounting feet to the housing then rotate the mou...

Страница 13: ...aw Detector WARNING Always verify that the power source is OFF before you make wiring connections 1 Turn off the controller 2 Turn off or unplug incoming power to the controller 3 Unlatch and open the housing door of the sample draw detector 4 Guide a nine conductor 18 gauge shielded cable or nine 18 gauge wires in conduit through one of the conduit hubs at the bottom of the sample draw housing If...

Страница 14: ...ure 5 External Field Wiring Sample Draw Detector H2S Controller Transmitter Terminals 24 VDC 24 VDC Interconnect Terminal Strip Controller LEL Terminals Controller Oxygen Terminals R B G W S 4 20 m A G W Main Circuit Board Sample Draw Housing ...

Страница 15: ...ternal Factory Wiring Sample Draw Detector Oxygen Sensor H2S H2S Sensor Plugs Into Far Side of Preamp Circuit Board Pump Factory Wired CO Not Used Pressure Switch Factory Wired IR LEL Sensor Connector IR LEL Detector Black Green White White Green Red ...

Страница 16: ...ove your thumb from the sample line press the pump reset switch and verify the flowmeter returns to a normal flow rate Setting the Zero Reading CAUTION If you suspect the presence of combustible gas toxic gases or an abnormal oxygen condition not 20 9 in the monitoring environment use the calibration kit and the zero air calibration cylinder to introduce fresh air to the sample draw adapter and ve...

Страница 17: ... If a low flow alarm occurs press the pump reset switch for about 2 seconds to restart the pump turn off the Fail LED and resume proper sensor signal transmission to the controller If the condition continues find the cause of the reduced flow correct it and 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 press...

Страница 18: ...regulator into the calibration cylinder 2 Connect the calibration tubing from the regulator to the inlet line at or near the INLET fitting Gas will begin to flow 3 After approximately one minute verify that the reading for each channel at the controller stabilizes within 10 of the concentration of the test sample If the reading is not within 10 of the test sample calibrate the sample draw detector...

Страница 19: ...rate Symptoms One or more of the sensors respond slowly or do not respond during the monthly response test Unable to accurately set the zero or response reading on one or more of the channels during the calibration procedure One or more of the sensors requires frequent calibration NOTE Under normal circumstances the sample draw detector requires calibration once a quarter Some applications may req...

Страница 20: ...that leads from the sensor 5 Plug the socket of the replacement sensor into the connector 6 Place the sensor in the oxygen sensor cavity then position the retaining plate on the two standoffs 7 Secure the retaining plate to the standoffs with the two screws you removed in step 3 8 Turn on incoming power 9 Calibrate the replacement sensor as described in Calibration Oxygen Detector on page 21 Repla...

Страница 21: ...r and pull it out of its metal clamp 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 filter back into the metal clamp Adjusting the Low Flow Setting The factory set low flow setting is 0 6 SCFH 0 2 To adjust the low flow setting 1 Use the flow adjust pot...

Страница 22: ...H4 sensor may be necessary for the sample draw detector Calibration H2S Detector This section describes how to calibrate the H2S detector in the sample draw detector It includes procedures to prepare for calibration set the zero reading set the response reading and return to normal operation NOTE This procedure describes calibration using a demand flow regulator a zero air calibration cylinder and...

Страница 23: ...tubing connected to the regulator Setting the Response Span Reading 1 Screw the regulator into the 4 gas calibration cylinder 2 Connect the sample tubing from the regulator to the inlet line at or near the sample draw detector s INLET fitting 3 Allow the calibration gas to flow for 1 minute 4 Check the mV output on the AMP 2 test points for H2S and verify that the reading matches the response read...

Страница 24: ...nect the sample tubing from the regulator to the inlet line at or near the INLET fitting 6 Allow the gas to flow for 1 minute 7 Set the zero reading according to the controller operator s manual 8 Disconnect the sample tubing from the inlet line 9 Unscrew the regulator from the zero air calibration cylinder Leave the sample tubing connected to the regulator Setting the Response Reading 1 Screw the...

Страница 25: ...100 nitrogen calibration cylinder could also be used to set the zero reading Setting the Zero Reading NOTE The 4 gas calibration cylinder included in the calibration kit may be used to zero the oxygen channel Keep in mind that the oxygen concentration in that cylinder is 12 not 0 Be sure to set the controller appropriately 1 Screw the regulator into the 4 gas calibration cylinder 2 Connect the cal...

Страница 26: ...r 2 The fresh air reading for the oxygen channel is set at the controller See the controller operator s manual for instructions to set the zero reading 3 When the instructions call for applying gas to the detector make sure the inlet line is sampling fresh air 4 Allow the detector to sample fresh air for one minute 5 Set the fresh air reading according to the controller operator s manual Returning...

Страница 27: ... for CO and H2S flow block cavities 30 0610RK Pump 33 0171RK Hydrophobic filter AcroPak 33 6095RK Charcoal filter CF 188 61 5039RK CH4 Infrared CH4 sensor 0 100 LEL 65 0601RK Oxygen sensor 81 0076RK 03 Zero air calibration cylinder 103 liter 81 0154RK 04 4 gas calibration gas cylinder 50 LEL methane 12 oxygen 25 ppm H2S 50 ppm CO 34 liters 81 1054RK Regulator demand flow for 34 liter aluminum and ...

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