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Summary of Contents for RKI Instruments 35-3001A-01
- Page 1 35-3001A-01 Combustible Gas Sample-Draw Detector Operator’s Manual Part Number: 71-0306RK Revision: A Released: 8/7/17 www.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. 35-3001A-01 Combustible Gas 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 ..............20 35-3001A-01 Combustible Gas Sample-Draw Detector... -
Page 5: Overview
WARNING: When using the 35-3001A-01, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 35-3001A-01 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 35-3001A-01 as described in this manual. -
Page 6: Description
O XY LEL / IR AMP 2 Interconnect Terminal Strip This End To Inlet Fitting 3/4" Conduit Hub Particle Filter INLET Inlet Fitting EXHAUST Exhaust Fitting Figure 1: Combustible Gas Sample-Draw Detector Component Location 2 • 35-3001A-01 Combustible Gas Sample-Draw Detector... -
Page 7: External Components
Pressure Switch Flowmeter Exhaust Sensor Flowmeter PCB Sensor Flow Control Restrictor Valve Inlet Pump Particle Filter Hydrophobic Filter Figure 2: Combustible Gas Sample-Draw Detector Flow Diagram 35-3001A-01 Combustible Gas Sample-Draw Detector • 3... - Page 8 Sensor Flow Control Valve The sensor flow control valve is mounted to the flowmeter circuit board above the flowmeter. The sensor flow control valve adjusts the flow rate to the detector. Turn the valve’s knob 4 • 35-3001A-01 Combustible Gas Sample-Draw Detector...
- Page 9 On the other end, five pins extend from the sensor and plug into the socket connector. The connector allows you to replace the sensor without disconnecting the wiring. Four leads extending from the connector are factory wired to the amplifier. 35-3001A-01 Combustible Gas Sample-Draw Detector • 5...
- Page 10 This drive current is factory set and is dictated by the combustible gas to which the detector is calibrated. Consult RKI Instruments, Inc. if you plan to change the calibration gas for the sample-draw detector, for example from a methane calibration to a hexane calibration.
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Page 11: Installation
6.50 Ø .30 x .50 (4X) M OUNTING 1.13 4.00 Pilot Fail Sample Drawing Gas Detector 8.88 8.50 35-3001 www.rkiinstruments.com 4.50 NOTE: Housing is 4.3 inches deep Figure 4: Outline and Mounting Dimensions 35-3001A-01 Combustible Gas Sample-Draw Detector • 7... -
Page 12: Connecting The Sample Lines To The Sample-Draw Detector
1/4” O.D. rigid polypropylene, Teflon, or flexible polyurethane tubing may be used. RKI Instruments, Inc. recommends using either 1/4” O.D. x 1/8” I.D. or 1/4” O.D. x 0.170” I.D. tubing based on your length requirements. See “Specifications” on page 1 for maximum tubing lengths based on tubing size. -
Page 13: Wiring The Combustible Gas Sample-Draw Detector To A Controller
Push 1/4” O.D. rigid polypropylene or rigid Teflon sample tubing into the fitting until it stops. Flexible polyurethane tubing may be used with an appropriate insert. RKI Instruments, Inc. recommends using either 1/4” O.D. x 1/8” I.D. or 1/4” O.D. x 0.170” I.D. tubing based on your length requirements. - Page 14 Connect the wires to the applicable detector/transmitter terminal strip at the controller as shown in Figure 5. Refer to the controller operator’s manual and the controller detector head specification sheet for the 35-3001A-01 for detector/terminal strip connections specific to the controller.
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Page 15: Start Up
Plug the voltmeter leads into the test points on the amplifier. Plug the positive lead into the red (+) test point; plug the negative lead into the black (-) test point. Verify a voltmeter reading of 100 mV (± 2 mV). 35-3001A-01 Combustible Gas Sample-Draw Detector • 11... -
Page 16: Maintenance
Open the housing door, then plug the voltmeter leads into the test points on the amplifier. Plug the positive lead into the red (+) test point; plug the negative lead into the black (-) test point. 12 • 35-3001A-01 Combustible Gas Sample-Draw Detector... -
Page 17: Troubleshooting
If you cannot set the correct flow rate, check the sample lines for obstructions or kinks. Verify that the sensor wiring and amplifier wiring is correct and secure. “Wiring the Sample- Draw Combustible Gas Detector to a Controller” on page 9 describes sensor and amplifier wiring connections. 35-3001A-01 Combustible Gas Sample-Draw Detector • 13... -
Page 18: Replacing Components Of The Combustible Gas Sample-Draw Detector
If the fail condition continues, replace the sensor as described in “Replacing the Combustible Gas Sensor” on page 14. If the fail condition continues, contact RKI Instruments, Inc. for further instruction. Slow or No Response/Difficult or Unable to Calibrate Symptoms •... - Page 19 Strip on Main PCB PWR/SIG “-” PWR/SIG “S” PWR/SIG “+” Table 3:Reconnecting the LEL Detector to the Amplifier Amplifier Detector Detector Lead Terminal Strip DETECTOR “R” DETECTOR “W” DETECTOR “G” GREEN DETECTOR “B” 35-3001A-01 Combustible Gas Sample-Draw Detector • 15...
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Page 20: Adjusting The Low Flow Setting
Be sure to put the controller into its calibration program or disable external alarms before performing this test. The factory-set low flow setting is 0.6 SCFH (±0.1). To adjust the low flow setting: 16 • 35-3001A-01 Combustible Gas Sample-Draw Detector... -
Page 21: Removing The Particle Filter's Tubing Stub, If Necessary
1/4" Tube Inside of Case Outside of Case O-ring Fitting Body Back Ferrule Tube Nut Front Ferrule 1/4" Tube Figure 6: Inlet Fitting with Tubing Stub 35-3001A-01 Combustible Gas Sample-Draw Detector • 17... -
Page 22: Calibration Frequency
Although there is no particular calibration frequency that is correct for all sample draw detector applications, a calibration frequency of every 3 to 6 months is adequate for most applications. Unless experience in a particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of every 3 months. -
Page 23: Setting The Zero Reading
Remove the voltmeter leads from the amplifier test points. Close the housing door. Follow the instructions in the controller’s operator’s manual to exit the calibration mode. Store the components of the calibration kit in a safe and convenient place. 35-3001A-01 Combustible Gas Sample-Draw Detector • 19... -
Page 24: Parts List
Regulator, demand flow, for 34 liter aluminum, 58 liter, and 103 liter calibration cylinders (cylinders with internal threads) 81-1055RK Regulator, demand flow, for 17 liter and 34 liter steel calibration cylinders (cylinders with external threads) NC-6245 Combustible gas sensor, plug-in type, LEL range 20 • 35-3001A-01 Combustible Gas Sample-Draw Detector...
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