RKI Instruments 35-3010RK-02 Manual Download Page 15 | Manualshive

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35-3010RK-02 Sample-Draw Detector • 11

Figure 6: Internal (Factory) Wiring, Sample Draw Detector

Oxygen S ensor

H2S Sensor
Plugs Into
Far Side of
Preamp
Circuit B oard

H2S

Pump
Factory
W ired

CO
Not

Used

Pressure Switch
Factory W ired

LEL

Detector

LEL Sensor

Connector

Green

W hite

W hite

Green

Black

Red

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14
15
16
17
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Summary of Contents for 35-3010RK-02

Page 1: ...www rkiinstruments com 35 3010RK 02 Sample Draw Detector Part Number 71 0208RK Revision D Released 6 5 17 ...

Page 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 ...

Page 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...

Page 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 LEL Detector 18 Setting the Zero Reading 18 Setting the Response Reading 18 Returning to Normal Operation 19 Calibration Oxygen Detector 19 Setting the Zero Reading 20 Setting the Fresh Air Reading ...

Page 5: ...ual to assure proper and safe operation of the 35 3010RK 02 and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the 35 3010RK 02 as described in this manual Table 1 Specifications Target Gases Detection Ranges Combustible Gas 0 100 LEL Oxygen 0 25 volume Hydrogen Sulfide H2S 0 100 ppm Input Power 24 VDC Current Draw 200 mA Construction housing Fiberglass poly...

Page 6: ...d 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 A...

Page 7: ...e to enter 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 disc...

Page 8: ...ubic 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 adjustment use the...

Page 9: ...s the gas sample to enter the sensor assembly and contact the sensing element The flame arrestor also contains sparks within the sensor Connector The top of the sensor includes five pins that plug into the socket connector This connector allows you to replace the sensor without disconnecting the wiring The sensor leads are soldered to the connector Sensor Leads Four color coded leads extend from t...

Page 10: ...or signal Since the CO sensor is replaced with a dummy plug in the 35 3010RK 02 the CO sensor signal cable carries no signal in this version of the 35 3010RK Main Circuit Board Figure 3 Main Circuit Board The main circuit board includes the interconnect terminal strip sensor transmitter terminal strip amp 1 circuit amp 2 circuit pump terminal strip relay and reset switch see Figure 3 NOTE The flow...

Page 11: ...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 500 mV output is available at the H2S test points for use during calibration No output is available at the CO test points Pump Terminal Strip The pump terminal strip is the four point terminal in the top left corn...

Page 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...

Page 13: ...raw 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 I...

Page 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 mA G W Main Circuit Board Sample Draw Housing ...

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

Page 16: ...eaking 8 Remove 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 ad...

Page 17: ... 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 pressure switch or ...

Page 18: ...gulator 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 a...

Page 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...

Page 20: ...ample draw detector 3 Unscrew and remove the two screws that secure the retaining plate 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 sensor in the oxygen sensor cavity then position the retaining plate on the two standoffs 7 Secure the retainin...

Page 21: ...Grasp the charcoal filter 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...

Page 22: ...to normal operation NOTE This procedure describes calibration using a demand flow regulator a zero air calibration cylinder and a 4 gas calibration cylinder Setting the Zero Reading NOTE If you can verify a fresh air environment it is not necessary to use the zero air calibration cylinder to set the zero reading 1 Open the housing door 2 Screw the regulator into the zero air calibration cylinder 3...

Page 23: ...It includes procedures to 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 cylinder and a 4 gas calibration cylinder to set the zero reading A 4 gas cylinder is used to set the zero since it is already used to calibrate the LEL and oxygen channels A 100 nitrogen calibration c...

Page 24: ...he detector to sample fresh air for one minute 5 Set the fresh air reading according to the controller operator s manual Returning to Normal Operation 1 Reconnect the incoming sample line 2 Wait 1 to 2 minutes to allow the calibration gas to be drawn out and the reading to stabilize 3 Close the housing door 4 Store the components of the calibration kit in a safe and convenient place Calibration H2...

Page 25: ...zero pot for the H2S channel until the voltmeter reading is 100 mV 2 mV 7 Disconnect the sample tubing from the inlet line 8 Unscrew the regulator from the zero air cylinder Leave the sample 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 sam...

Page 26: ... 16 x 5 16 specify length for calibration kit 07 0034RK Sealing gasket for H2S flow block cavity 30 0610RK Pump 33 0171RK Hydrophobic filter AcroPak 33 6095RK Charcoal filter CF 188 65 0601RK Oxygen sensor 81 0076RK 01 Zero air calibration cylinder 34 liter 81 0154RK 04 4 gas calibration gas cylinder 50 LEL methane 12 oxygen 25 ppm H2S 50 ppm CO 34 liters 81 1050RK Regulator demand flow for 17 and...

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