Infrared Detection

Infrared Detection

At GDS Corp., we are serious about safety for your employees and property. Count on us for the most reliable, safest, easy to use and cost effective gas detection systems in the commercial and industrial sectors.

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Understanding Infrared Detection

Infrared Detection is a technique used to identify the presence of combustible hydrocarbon gases by measuring the absorption of infrared light energy by gas molecules. An infrared detector includes a source of infrared light, optical filters and an optical receiver. As hydrocarbon gas enters the space between the source and receiver, a measurement in the reduction of light energy received is used to determine the level of gas present. An Infrared Level Detector often uses two wavelengths of infrared energy, with one active wavelength used for gas absorption, and the other as a reference wavelength to compensate the output signal of the Infrared Detection system for the effects of temperature, humidity and the presence of moisture or dirt on the optical filters.

Catalytic bead sensors have traditionally been used for combustible gas detection, but suffer from drawbacks such as silicon poisoning, frequent calibration requirements, and the need that oxygen be present for the detection of hydrocarbon gases. Infrared detectors are immune to poisoning and include microprocessors that constantly monitor the status of the source and receiver. As a result, Infrared Detection is much more reliable for hydrocarbon monitoring in fixed gas detection systems. Because of the ability of the sensor to monitor its own operation, error or fault conditions can be immediately transmitted to the controller or DCS to alert technicians; catalytic bead sensors can fail in ways that only a test with actual gas can detect.

Infrared Detection gas detectors can be used for both point detection and open path detection. Point detectors, such as the GASMAX II or GASMAX CX measure the amount of gas present at a specific location. Open path detectors such as the Quasar SafEye ® 900 include separate transmitters and receivers and measure the presence of gas between the two points up to 200 meters apart. In most cases, a combination of open path and point detectors can be combined to provide the highest level of safety.

Because the Infrared Detection wavelength used for hydrocarbon detection is close to that required for Carbon Dioxide detection, Infrared Detection systems are also available for toxic and percent by volume detection of Carbon Dioxide.

Contact GDS Corp. to Learn More

If you want to know more about infrared detection, please contact one of our application engineers through the online contact form or by calling one of the phone numbers provided. Thanks for considering GDS Corp.

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409-927-2980

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