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Today, detection of toxic gases in workplaces has become an integral part of work and operation safety. Gas detection is used to provide early warning of the formation of a dangerous mixture of toxic or explosive gas with air. It protects human lives and property.
There are two variants of gas detectors, portable or fixed (stationary detectors). Which type to choose depends on several factors, in particular how accessible the area is, whether the hazard is permanent or not, and how often concentration needs to be measured.
Carbon monoxide (CO) detector: Carbon monoxide has a very similar density to air, so it tends to be evenly distributed throughout the room. Detectors should therefore be placed at the height of a person's face. Breathing zone is usually determined at a height of 1.5 m above the floor.
Typical applications for a carbon monoxide detector are underground car parks, boiler rooms, factories and incinerators.
Carbon dioxide (CO2) detector: Carbon dioxide is the primary indicator of indoor air quality. By measuring CO2 together with relative humidity and temperature, the level of indoor air quality can be determined. Air quality is assessed mainly in public buildings such as schools, offices, hospitals or theaters and hotels. At high concentrations of CO2, human disorientation, headaches, loss of consciousness and, in extreme cases, death can occur. Installing a detector prevents oxygen depletion in confined spaces. CO2 is heavier than air and sinks to the ground. However, when measuring air quality, we are interested in the concentration of CO2 in the breathing zone - ie at a height of 1.5 m above the floor.
Methane detector (CH4): installed in enclosed spaces where there is a risk of gas accumulation and explosion. Methane is lighter than air and therefore rises, the detector must be placed about 10 cm below the ceiling and near the source of the leak. The most common use of methane detectors is in boiler rooms, kitchens with gas stoves or incinerators.
For better command, the detectors can also be bought with a built-in LCD display that shows the current measured value. In case of danger, the display flashes.
Complete range of detectors with LDC display can be found here.
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