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Summary of Contents for RKI Instruments 35-3010RK-03
- Page 1 35-3010RK-03 Sample Draw Detector Part Number: 71-0166RK Revision: D Released: 6/5/17 rkiinstruments.com...
- Page 2 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. 35-3010RK-03 Sample-Draw Detector...
- Page 3 Product Warranty RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects in materials, workmanship, and performance for a period of one year from date of shipment from RKI Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of charge.
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Page 4: Table Of Contents
Parts List ..............22 35-3010RK-03 Sample-Draw Detector... -
Page 5: Overview
WARNING: When using the 35-3010RK-03, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 35-3010RK-03 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 35-3010RK-03 as described in this manual. -
Page 6: Description
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. 2 • 35-3010RK-03 Sample-Draw Detector... -
Page 7: Flow System
It prevents water and other liquids from contaminating the flow system. Replace the filter when it appears dirty, discolored, or clogged. If a liquid other than water is drawn into the filter, replace the filter as soon as possible. 35-3010RK-03 Sample-Draw Detector • 3... - Page 8 LEL and oxygen channels and the 4-20 mA signal for CO channel. This causes a downscale reading at the controller on each channel resulting in a fail alarm. The low flow level is factory-set at 0.6 SCFH (±0.2 SCFH). 4 • 35-3010RK-03 Sample-Draw Detector...
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Page 9: Detection System
The sensor leads are soldered to the male connector. Sensor Leads Two color-coded leads extend from the connector. The leads allow you to connect the oxygen sensor to the main circuit board. 35-3010RK-03 Sample-Draw Detector • 5... - Page 10 Hydrogen Sulfide Gas Sensor The hydrogen sulfide gas sensor position is located in the upper right side of the flow block. In the 35-3010RK-03, the hydrogen sulfide gas sensor position in the flow block is occupied by a dummy sensor.
- Page 11 S channel. Since there is no H S channel in the 35-3010RK-03, Amp 2 is not used. The zero and span pots are used during calibration. Use the span pot to make adjustments to gas response readings and the zero pot to make adjustments to the zero reading.
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Page 12: Installation
Slightly loosen the screw that secures one of the mounting feet to the housing, then rotate the mounting foot 180 degrees. Tighten the screw that secures the mounting foot to the housing. 8 • 35-3010RK-03 Sample-Draw Detector... -
Page 13: Connecting The Sample Lines To The Sample-Draw Detector
Figure 5. Refer to the controller operator’s manual for the controller’s detector/transmitter’s terminal designations. The LEL and oxygen detector channels are direct connect type and the CO channel is 4 - 20 mA transmitter. 35-3010RK-03 Sample-Draw Detector • 9... - Page 14 Sample Draw Housing Main Circuit Board Interconnect Terminal Strip Controller LEL Terminals 24 VDC - Controller Oxygen S (4/20 mA) (Controller Transmitter + (W) Terminals Terminals) 24 VDC + Figure 5: External (Field) Wiring, Sample Draw Detector 10 • 35-3010RK-03 Sample-Draw Detector...
- Page 15 Factory W ired W ired Green W hite Black Green White LEL Sensor Connector CO Sensor Plugs Into Far Side of Pream p Oxygen Detector Circuit Board Used Sensor Figure 6: Internal (Factory) Wiring, Sample Draw Detector 35-3010RK-03 Sample-Draw Detector • 11...
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Page 16: Start Up
If necessary, use a small flat-blade screwdriver to adjust the zero pot until the voltmeter reading is 100 mV (± 2 mV). Verify a reading of 0% LEL on the LEL channel at the controller. 12 • 35-3010RK-03 Sample-Draw Detector... -
Page 17: Operation
Verify a reading of 0 %LEL for the combustible channel, 20.9% for the oxygen channel, and 0 ppm for the CO channel (100 mV at the amp 1 test points). Investigate significant changes in the reading. 35-3010RK-03 Sample-Draw Detector • 13... -
Page 18: Troubleshooting
NOTE: This troubleshooting guide describes sample draw detector problems only. See the controller operator’s manual if the controller exhibits any problems. Sample Draw Detector Fail Condition Symptoms • The sample draw detector’s Fail LED is on. • The pump is off 14 • 35-3010RK-03 Sample-Draw Detector... - Page 19 Set the correct flow rate with the bypass valve or flow adjust potentiometer. If you cannot set the correct flow rate, check the sample lines for obstructions or kinks. If the fail condition continues, contact RKI Instruments, Inc. for further instruction. Controller Fail Condition...
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Page 20: Replacing Components Of The Sample-Draw Detector
If you cannot set the correct flow rate, check the sample line for obstructions or kinks. If the calibration/response difficulties continue, replace the sensor as described later in this section. If the calibration/response difficulties continue, contact RKI Instruments, Inc. for further instruction. Replacing Components of the Sample-Draw Detector This section includes procedures to replace the sensors, the hydrophobic filter, and the charcoal filter. -
Page 21: Adjusting The Low Flow Setting
Repeat this step until you are able to adjust the flow to 0.6 SCFH. Slowly turn the low flow potentiometer counterclockwise just until the sample draw detector goes into low flow alarm. 35-3010RK-03 Sample-Draw Detector • 17... -
Page 22: Calibration Frequency
INLET fitting. Allow the gas to flow for 1 minute. Set the zero reading according to the controller operator’s manual. Disconnect the sample tubing from the inlet line. 18 • 35-3010RK-03 Sample-Draw Detector... -
Page 23: Setting The Response Reading
NOTE: The 3-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. Screw the regulator into the 3-gas calibration cylinder. 35-3010RK-03 Sample-Draw Detector • 19... -
Page 24: Setting The Zero Reading
NOTE: This procedure describes calibration using a demand flow regulator, a zero air calibration cylinder, and a 3-gas calibration cylinder. 20 • 35-3010RK-03 Sample-Draw Detector... -
Page 25: Preparing For Calibration
If necessary, use the AMP 1 span pot to adjust the reading to match the correct response reading. Disconnect the sample tubing from the sample draw detector’s inlet line. Unscrew the regulator from the calibration cylinder. 35-3010RK-03 Sample-Draw Detector • 21... -
Page 26: Returning To Normal Operation
Zero air calibration cylinder (34 liter) 81-0090RK-01 3-gas calibration gas cylinder, 50% LEL methane/12% oxygen/50 ppm CO, 34 liter 81-0155RK Regulator, demand flow, for 17 and 34 liter steel cylinders ES-1531-CO CO sensor NC-6245 Combustible sensor 22 • 35-3010RK-03 Sample-Draw Detector...
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