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New MSA Unit Monitors 100 Gases

Monday, December 1, 2014

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Global safety equipment provider MSA has introduced a monitor designed to provide precise, low-cost, high-performance monitoring for 100 different industrial gases.

The Chemgard Photoacoustic Infrared Gas Monitor features IR sensing technology that "makes it highly selective to the gas of interest," according to MSA. The gases include 59 standard gases such hydrocarbons, solvents, alcohols, CO2 and CO.

How it Works

This technology takes a gas sample into the monitor’s measurement chamber, where it is exposed to a specific wavelength of infrared light. If the sample contains the gas of interest, the sample will absorb an amount of infrared light proportional to the gas concentration present.


MSA's new Chemgard Photoacoustic Infrared Gas Monitor features IR sensing technology and comes in three styles.

Beyond simply measuring the amount of infrared light that is absorbed, photoacoustic infrared analysis actually detects what occurs after the gas is absorbed, according to MSA.

Always in motion, gas molecules move around the inside of the measurement chamber, generating pressure," according to MSA.

"A highly sensitive microphone detects the audible pulse to even the lowest gas levels."

3 Styles

Three enclosure styles are available for different applications.

The NEMA 4 version in a rugged metal enclosure is dust- and water-resistant and features four wall-mount tabs on the enclosure back for easy installation.

The rack-mount version in standard 19-inch configuration provides handles on both sides of front panel for easy cabinet extraction.

Tthe explosion-proof version is UL-listed and rated for Class I, Div. 1, Groups B, C, and D areas and comes with four wall-mount tabs on the back corners of the unit.
MSA says the Chemgard Monitor features easy-to-read displays, three alarm levels, UL 2075 approval and data logging, which provides users access to date-stamped information on gas readings, alarms, fault conditions and other key events.

More information:


Tagged categories: Air quality; Gas detectors; Health and safety; MSA

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