Related Manuals for RKI Instruments 35-3001A-07
Summary of Contents for RKI Instruments 35-3001A-07
- Page 1 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector Operator’s Manual Part Number: 71-0431 Revision: 0 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-07 Combustible Gas/Hydrogen Sulfide 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 ..............25 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector... -
Page 5: Overview
WARNING: When using the 35-3001A-07, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 35-3001A-07 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 35-3001A-07 as described in this manual. -
Page 6: Description
3/4 " Co nd uit Hu b P arti cle Fi lter INLE T Inl et Fi tti ng EX HAUST E xha ust Fi tti ng Figure 1: Combustible Gas/Hydrogen Sulfide Sample-Draw Detector Component Location 2 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector... -
Page 7: External Components
Pressure Switch Flowmeter Exhaust Hydrogen Flowmeter PCB Sulfide Restrictor Sensor Sensor Flow Control Valve Inlet Flow Baffle Sensor Pump Particle Filter Hydrophobic Filter Figure 2: Combustible Gas/Hydrogen Sulfide Sample-Draw Detector Flow Diagram 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 3... - 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. 4 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide 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-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 5...
- Page 10 The black test point in the upper left corner is the negative (-) test point and the red test point to the left of the zero and span pots is the positive (+) test point. 6 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector...
- Page 11 The black test point (CAL 2) in the upper left corner is the negative (-) test point and the red test point (CAL 1) in the upper right corner is the positive (+) test point. 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 7...
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Page 12: Installation
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 8 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide 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 1 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 Connect the wires to the applicable detector/transmitter terminal strip at the controller as shown in Figure 6. Refer to the controller operator’s manual and the controller detector head specification sheet for the 35-3001A-07 for detector/terminal strip connections specific to the controller.
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Page 16: Start Up
If the display reading is 0 %LEL for the combustible gas channel and 0 ppm for the H channel, start up is complete. The sample-draw detector is in normal operation. If the display 12 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector... -
Page 17: Maintenance
“Calibration, LEL Sensor” on page 21 or “Calibration, H S Sensor” on page 23, then continue this procedure. Set a voltmeter to measure in the millivolt (mV) range. 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 13... - Page 18 13. Remove the voltmeter leads from the H S amplifier. 14. Close the housing door. 15. Store the calibration kit in a safe place. 16. Reconnect the sample tubing to the inlet fitting. 14 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector...
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Page 19: Troubleshooting
If the fail condition continues, replace the sensor(s) as described in “Replacing Components of the Sample-Draw Detector” on page 16. If the fail condition continues, contact RKI Instruments, Inc. for further instruction. Slow or No Response/Difficult or Unable to Calibrate Symptoms •... -
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 LEL sensor, LEL amplifier, hydrogen sulfide sensor, hydrogen sulfide amplifier, hydrophobic filter, and particle filter. - Page 21 There is a gasket at the bottom of the flow block. Be sure the gasket stays in place. Unplug the sensor from the H S amplifier. Verify that you are using the correct replacement sensor, then plug the sensor into the H amplifier. 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 17...
- Page 22 Disconnect the filter from the rubber elbows on each end of the filter, then remove the filter from the sample-draw detector. Install the new filter. Be sure the side of the filter marked “INLET” is connected to the elbow that is connected to the inlet fitting. 18 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector...
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Page 23: 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. 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 19... -
Page 24: 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 9 for instructions to install a new piece of tubing into the fitting. 20 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector... -
Page 25: Calibration Frequency
Although there is no particular calibration frequency that is correct for all applications, a calibration frequency of every 3 months is adequate for most 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 sample-draw detector. -
Page 26: 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. 22 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector... -
Page 27: Calibration, H 2 S Sensor
5. If you verified a fresh air environment, proceed to the next section, Setting the Response Reading. Disconnect the sample tubing from the inlet fitting. Unscrew the regulator from the zero air calibration cylinder. 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 23... -
Page 28: Setting The Response 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. 24 • 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector... -
Page 29: Parts List
(cylinders with internal threads) 81-1055RK Regulator, demand flow, for 17 liter and 34 liter steel calibration cylinders (cylinders with external threads) ES-1537-H2S Hydrogen sulfide sensor NC-6245 Combustible gas sensor, plug-in type, LEL range 35-3001A-07 Combustible Gas/Hydrogen Sulfide Sample-Draw Detector • 25...
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