Purpose:
Depending on the version are designed for continuous operational automatic measurements of volume fraction of oxygen (O2), carbon dioxide (CO2), propane (C3H8), methane (CH4), mass concentration of carbon monoxide (CO), hydrogen sulfide (H2S), nitrogen dioxide (NO2), sulfur dioxide (SO2), ammonia (NH3) and pre-explosive concentrations of methane, combustible gases and vapours, their mixtures (????), in air.
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