Semiconductor (SC) are applied in a wide range of types of gas detection covering combustible, toxic and refrigerant gas detection. SC’s are highly economical and they typically have a lifespan that ranges between 5 and 8 years. In the past these sensors were prone to cross sensitivity issues however this has been resolved through a combination of filtered sensors, by using time delay within the electronics and through amending the threshold settings on the alarm.

Electrochemical (EC) fixed gas sensor devices are relevant where gases are prone to undergoing any type of oxidation or reduction reaction. These are highly selective and will measure gases at extremely low levels – making them very accurate. EC’s are typically recommended for toxic gas detection. These are provided with long life sensors which have a typical lifespan of 3 years or so.

A Catalytic (CAT) gas leak sensor is primarily applied for the detection of combustible gas as detection at high concentrations is essential – up to 100% LEL in some cases. Each CAT fixed gas detector can respond to every combustible gas, at different rates therefore they can be readily calibrated for any specific gas. The typical lifespan for a CAT sensor is approx. 5 years.

An Infrared (IR) gas leak detector is specific, highly accurate and usually has a life span of about 10 years. Normally they are applied for the detection of Carbon Dioxide but are also available for hydrocarbons, ammonia and halocarbon refrigerants

Check out the homepage of www.murcogasdetection.com and use the “Which Gas do you want to detect” functionality to identify the best sensor for your requirements.