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Introduction
Designed for HVAC professionals and utility person-
nel, the Snifit Model 40 Analyzer is ideal in checking
for the presence of CO in rooms and garages, or
around registers, furnaces, stoves, hot water heaters
and other types of combustion appliances. Used in
conjunction with your Digital Multimeter (DMM), the
Snifit samples the surrounding air and provides a
voltage output that is proportional to the detected CO
concentration that is then displayed on the DMM.
Features
• Measures 0 to 1999 ppm CO in room air
• Sensitive CO sensor will last up to 2 years
• Output of 1 mV/ppm CO
• Compact pocket size
• Low battery check
• Manual zero adjust
• Factory calibrated on 100 ppm CO
• Simple field calibration
• Auto power-off after 35 minutes
• Single 9V battery provides at least 1500 hours of
Bacharach, Inc.
625 Alpha Drive, Pittsburgh, PA 15238
Phone: 412-963-2157/2164
Fax: 412-963-2640
Web: www.bacharach-inc.com
Printed in U.S.A.
® Registered trademarks
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Summary of Contents for Bacharach Snifit 40
- Page 1 • Factory calibrated on 100 ppm CO • Simple field calibration • Auto power-off after 35 minutes • Single 9V battery provides at least 1500 hours of operation Bacharach, Inc. 625 Alpha Drive, Pittsburgh, PA 15238 Phone: 412-963-2157/2164 Fax: 412-963-2640 Web: www.bacharach-inc.com Printed in U.S.A.
- Page 2 The Power On LED indicates when the instrument is operating. Turn off the instru- ment by pressing the Power Off button (or the instrument will automatically shut off after approximately 35 minutes). Figure 1. Snifit 40 - 2 -...
- Page 3 Voltmeter Connection Connect the Snifit to a voltmeter using the supplied Data Cable (see Figure 1). We suggest using a 3½ digit or greater Digital Multimeter having a 2 VDC range or auto ranging capability, a 10 MΩ or greater input impedance, and an accuracy of at least ±1mV.
- Page 4 Figure 2. Calibration Equipment Setup Calibration Important! For accurate Snifit operation, periodic calibration of its CO sensor is required. To calibrate the CO sensor, you will need the equip- ment listed under Accessories. Note that the Zero Gas Cylinder is needed only if you’re unsure about the quality of the surrounding air for zeroing purposes.
- Page 5 5. Allow span gas to flow until the voltmeter reading stabilizes – approximately 3 minutes. Then, using Calibration Tool 06-9453 (supplied in Calibration Tool / Cup Kit 19-3242), turn the Span Adjust potentiometer until the CO level indicated by the voltmeter reading matches the concentration stamped on the Span Gas Cylinder.
- Page 6 Span Gas Cylinder, 100 ppm CO in air ... 51-1994 Zero Gas Cylinder, 20.9% O in Nitrogen ..51-7131 Bacharach Service Center Replacement parts and accessories can be obtained by contacting the following Bacharach Service Center: Bacharach, Inc. 625 Alpha Drive Pittsburgh, PA 15238 Phone: (412) 963-2214...
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