Related Manuals for RKI Instruments 35-3001-12H
Summary of Contents for RKI Instruments 35-3001-12H
- Page 1 35-3001-12H Hydrogen/Methane Sample-Draw Detector Operator’s Manual Part Number: 71-0389 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. 35-3001-12H Hydrogen/Methane 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 ..............19 35-3001-12H Hydrogen/Methane Sample-Draw Detector... -
Page 5: Overview
WARNING: When using the 35-3001-12H, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 35-3001-12H and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 35-3001-12H as described in this manual. -
Page 6: Description
EXHAUST Exhaust Fitting Figure 1: Hydrogen/Methane Sample-Draw Detector Component Location External Components This section describes the sample-draw detector’s external components. Housing The sample-draw detector’s fiberglass housing is weather- and corrosion-resistant. It is suitable for 2 • 35-3001-12H Hydrogen/Methane Sample-Draw Detector... -
Page 7: Internal Components
Figure 2: Hydrogen/Methane Sample-Draw Detector Flow Diagram Main Circuit Board The main circuit board includes the detector/amp terminal strip, interconnect terminal strip, oxygen sensor terminal strip, pump connector, and flowmeter circuit board connector (see Figure 1). 35-3001-12H Hydrogen/Methane Sample-Draw Detector • 3... - Page 8 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 clockwise to increase the flow and counterclockwise to decrease the flow. 4 • 35-3001-12H Hydrogen/Methane Sample-Draw Detector...
- Page 9 PCB, with a 4-wire cable mates to the IR sensor and retains it in the flow block. The cable is wired to the main PCB. The IR CH sensor PCB allows you to replace the sensor without disconnecting the wiring. 35-3001-12H Hydrogen/Methane Sample-Draw Detector • 5...
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Page 10: Installation
Are the flowmeter and status LEDs visible? 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 3: Outline and Mounting Dimensions 6 • 35-3001-12H Hydrogen/Methane Sample-Draw Detector... -
Page 11: 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 12: 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 13 Connect the wires to the applicable detector/transmitter terminal strip at the controller as shown in Figure 4. Refer to the controller operator’s manual and the controller detector head specification sheet for the 35-3001-12H for detector/terminal strip connections specific to the controller.
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Page 14: Start Up
If the display reading is not 0% LEL for each channel, continue with step 3. Perform a zero (fresh air) operation on each channel at the controller. See “Setting the Zero 10 • 35-3001-12H Hydrogen/Methane Sample-Draw Detector... -
Page 15: Maintenance
After approximately one minute, verify that the hydrogen reading at the controller stabilizes within ± 20% of the concentration of the test sample. If the reading is not within ± 20% of the 35-3001-12H Hydrogen/Methane Sample-Draw Detector • 11... -
Page 16: Troubleshooting
If the fail condition continues, replace the sensor(s) as described in “Replacing Components of the Sample-Draw Detector” on page 13. If the fail condition continues, contact RKI Instruments, Inc. for further instruction. Slow or No Response/Difficult or Unable to Calibrate Symptoms •... -
Page 17: 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... - Page 18 Disconnect the particle filter from the tubing stub. Install the new particle filter onto the tubing stub. Be sure the arrow on the particle filter is pointing toward the inlet fitting. Reinstall the tubing routed to the sampling area. 14 • 35-3001-12H Hydrogen/Methane Sample-Draw Detector...
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Page 19: 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. 35-3001-12H Hydrogen/Methane Sample-Draw Detector • 15... -
Page 20: 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 7 for instructions to install a new piece of tubing into the fitting. 16 • 35-3001-12H Hydrogen/Methane Sample-Draw Detector... -
Page 21: Calibration Frequency
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 hydrogen sensor and every 6 months for the infrared methane sensor. -
Page 22: Returning To Normal Operation
Wait approximately one minute to allow the readings to return to 0% LEL. 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. 18 • 35-3001-12H Hydrogen/Methane Sample-Draw Detector... -
Page 23: 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) 35-3001-12H Hydrogen/Methane Sample-Draw Detector • 19...
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