Summary of Contents for RKI 35-3001A-04-02
- Page 1 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector Operator’s Manual Part Number: 71-0473 Revision: P1 Released: 11/12/18 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-04-02 Carbon Monoxide 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 ..............26 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector... -
Page 5: Overview
WARNING: When using the 35-3001A-04-02, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 35-3001A-04-02 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 35-3001A-04-02 as described in this manual. -
Page 6: Description
Terminal S trip Interconnect Terminal Strip T his E nd To Inlet Fitting 3/4" Conduit Hub Particle Filter INLET Inlet F itting EXHAUST Ex haust F itting Figure 1: Carbon Monoxide Sample-Draw Detector Component Location 6 • 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector... -
Page 7: External Components
Pressure Switch Flowmeter Exhaust Carbon Monoxide Flowmeter PCB Sensor Sensor Flow Control Restrictor Valve Inlet Charcoal Filter Pump Particle Filter Hydrophobic Filter Figure 2: Carbon Monoxide Sample-Draw Detector Flow Diagram 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector • 7... - Page 8 A ball in the flowmeter column indicates the flow rate to the sensor. The flowmeter measures the flow in the range 0.2 to 2.0 SCFH (Standard Cubic Feet per Hour). The optimum flow rate is 1.0 SCFH. 8 • 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector...
- Page 9 A charcoal filter is located between the amplifier and the flow block. It scrubs out interfering gases which may cause the CO sensor to respond, such as H S or certain hydrocarbons. Replace the charcoal filter when false high CO readings are noticed, especially in the presence of H 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector • 9...
- Page 10 Rubber Boot and Spacer A rubber boot and spacer are installed on the sensor. They help ensure that the detector remains plugged into the detector housing body. 10 • 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector...
- Page 11 The black test point in the lower left corner is the negative (-) test point and the red test point below the zero pot is the positive (+) test point. 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector • 11...
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Page 12: 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 5: Outline and Mounting Dimensions 12 • 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector... -
Page 13: 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 5 for maximum tubing lengths based on tubing size. -
Page 14: Wiring The 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 15 Figure 6: Wiring the Sample-Draw Detector to a Controller If shielded cable is used, connect the cable’s drain wire to an available chassis (earth) ground at the controller. RKI controllers typically have a ground stud that can be used to ground the cable’s drain wire.
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Page 16: 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). 16 • 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector... -
Page 17: Maintenance
Recommended action At the sample-draw detector, set the correct flow rate with the sensor flow control valve. If you cannot set the correct flow rate, check the sample lines for obstructions or kinks. 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector • 17... - Page 18 If the fail condition continues, replace the sensor as described in “Replacing Components of the Sample-Draw Detector” on page 19. If the fail condition continues, contact RKI Instruments, Inc. for further instruction. Slow or No Response/Difficult or Unable to Calibrate Symptoms •...
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Page 19: Replacing Components Of The Sample-Draw Detector
NOTE: If installing a new plug-in sensor along with a new detector housing body, be sure to move the rubber boot and spacer from the old plug-in sensor to the new plug-in sensor. Screw the new detector housing body back into the flow block. 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector • 19... - Page 20 Pull the charcoal filter away from the main circuit board so that it is easier to access. Disconnect the filter from the rubber elbows on each end of the filter, then remove the filter from the sample-draw detector. 20 • 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector...
- Page 21 Install the new particle filter onto the tubing stub. Be sure the arrow on the particle filter is pointing toward the inlet line. Turn on power to the controller. Turn on the controller. 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector • 21...
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Page 22: Adjusting The Low Flow Setting
If the low flow alarm is set too high, turn the pressure switch adjustment screw slightly clockwise. Repeat steps 3 and 4 if necessary. Use the sensor flow control valve to set the flow to 1.0 SCFH. Make sure the sample-draw detector’s Fail LED is off. 22 • 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector... -
Page 23: Removing The Particle Filter's Tubing Stub, If Necessary
Screw the inlet fitting tube nut back onto the fitting body. See “Connecting the Sample Lines to the Sample-Draw Detector” on page 13 for instructions to install a new piece of tubing into the fitting. 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector • 23... -
Page 24: Calibration Frequency
3 months is adequate for most carbon monoxide sample draw detector applications. Unless experience in a particular application dictates otherwise, RKI Instruments, Inc. recommends a calibration frequency of every 3 months for the carbon monoxide sample draw detector. -
Page 25: 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-04-02 Carbon Monoxide Sample-Draw Detector • 25... -
Page 26: Parts List
65-2408 CO replacement detector housing body (does not include plug-in sensor, rubber boot, or spacer) 71-0473 Operator’s Manual, 35-3001A-04-02 Carbon Monoxide Sample-Draw Detector 81-0064RK-01 Calibration cylinder, 50 ppm CO in air, 34 liter steel 81-0064RK-03 Calibration cylinder, 50 ppm CO in air, 103 liter...
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