Related Manuals for RKI Instruments 35-3001A-01HDIL
Summary of Contents for RKI Instruments 35-3001A-01HDIL
- Page 1 35-3001A-01HDIL Hydrogen Sample-Draw Detector Operator’s Manual Part Number: 71-0410 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-01HDIL Hydrogen 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 35-3001A-01HDIL Hydrogen Sample-Draw Detector... -
Page 5: Overview
About the 35-3001A-01HDIL The 35-3001A-01HDIL is designed to monitor hydrogen in an inerted area (an area that has no, or almost no, oxygen present). The catalytic LEL sensor used to detect hydrogen must have at least 5% oxygen present to detect gas properly. - Page 6 When using the 35-3001A-01HDIL, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 35-3001A-01HDIL and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 35-3001A-01HDIL as described in this manual.
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Page 7: Description
LE L/ IR AMP 1 A MP 2 Interconnect Terminal Strip This End To Inlet Fitting 3/4" Conduit Hub Particle Filter INLET Inlet Fitting EXHAUST Exhaust Fitting Figure 1: Hydrogen Sample-Draw Detector Component Location 35-3001A-01HDIL Hydrogen Sample-Draw Detector • 3... -
Page 8: External Components
Flowmeter Exhaust Pump Restrictor Flowmeter PCB Hydrogen Sensor Sensor Flow Control Valve Dilution Fitting, Inlet approx. 1:1 ratio Pressure Switch Particle Filter Hydrophobic Filter Figure 2: Hydrogen Sample-Draw Detector Flow Diagram 4 • 35-3001A-01HDIL Hydrogen Sample-Draw Detector... - Page 9 A ball in the flowmeter column indicates the flow rate to the LEL sensor which is the sample flow plus the dilution flow. The flowmeter measures the flow in the range 0.2 to 2.0 SCFH (Standard Cubic Feet per Hour). The optimum flow rate is 0.8 SCFH. 35-3001A-01HDIL Hydrogen Sample-Draw Detector • 5...
- Page 10 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. 6 • 35-3001A-01HDIL Hydrogen Sample-Draw Detector...
- Page 11 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 hydrogen calibration to a methane calibration.
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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 i s 4.3 inches deep Figure 4: Outline and Mounting Dimensions Close and latch the housing door. 8 • 35-3001A-01HDIL Hydrogen 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 5. Refer to the controller operator’s manual and the controller detector head specification sheet for the 35-3001A-01HDIL for detector/terminal strip connections specific to the controller.
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Page 16: Start Up
Setting the Zero Reading Since the 35-3001A-01HDIL monitors an inerted area, in order to set the zero reading, the inlet line must be moved to a fresh air area, the inlet line must be removed so that sample is being drawn through the inlet fitting (if the instrument is mounted in a fresh air area), or a zero air cylinder must be used. -
Page 17: Maintenance
Verify that the display reading at the controller is 0 %LEL. If the display reading is not 0 %LEL, set the zero reading as described in “Calibration” on page 20, then continue this procedure. Set a voltmeter to measure in the millivolt (mV) range. 35-3001A-01HDIL Hydrogen Sample-Draw Detector • 13... -
Page 18: Troubleshooting
The sample-draw detector’s Fail LED is on. • The monitoring device is operating properly but indicates a reading well below zero. Probable causes • The sample-draw detector’s flow rate is too low because of an obstructed sample line, failed 14 • 35-3001A-01HDIL Hydrogen Sample-Draw Detector... - Page 19 Connect a 0-2 SCFH flowmeter to the inlet fitting or the inlet line and confirm the flow is above the low flow setpoint of 1.0 SCFH while holding down the reset switch. NOTE: RKI Instruments, Inc. offers a 0 -2 SCFH flowmeter but tubing connection fittings must be user installed to the flowmeter’s 1/8” NPT female fittings.
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Page 20: Replacing Components Of The Sample-Draw Detector
Remove the old amplifier from the main circuit board. Install the new amplifier in the same orientation as the old amplifier. See Figure 1. Reinstall the screw, lock washer, and flat washer you removed in step 5. 16 • 35-3001A-01HDIL Hydrogen Sample-Draw Detector... - Page 21 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. Turn on power to the controller. Turn on the controller. Verify that the flow rate is approximately 0.8 SCFH, then close the housing door. 35-3001A-01HDIL Hydrogen Sample-Draw Detector • 17...
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Page 22: Adjusting The Low Flow Setting
Install a 0-2 SCFH flowmeter with an adjustment valve at the inlet of the sample-draw detector. NOTE: RKI Instruments, Inc. offers a 0 - 2 SCFH flowmeter but tubing connection fittings must be user installed to the flowmeter’s 1/8” NPT female fittings. -
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 9 for instructions to install a new piece of tubing into the fitting. 35-3001A-01HDIL Hydrogen Sample-Draw Detector • 19... -
Page 24: 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. -
Page 25: Setting The Zero Reading
Wait approximately one minute to allow the hydrogen reading to stabilize. 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. 35-3001A-01HDIL Hydrogen Sample-Draw Detector • 21... -
Page 26: Parts List
Regulator with gauge and knob, 6 LPM, for 34 liter aluminum cylinder, 58 liter, and 103 liter cylinder (cylinders with internal threads) 81-1127RK Gas bag with fittings and hosebarb, 12 inches x 12 inches, 5 liters, tedlar 22 • 35-3001A-01HDIL Hydrogen Sample-Draw Detector...
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