The AIR/GAZ pressure switch C6097 controls the minimum and maximum pressures of gaseous or air fuels for low-pressure gas installations (below 500 mbar). It also can be used to monitor the clogging level of fan air filters. A relay with changeover contact transmits the information to the safety device (gas solenoid valve).
A gas mask filter has a limited self life. The saturation time comes when the carbon granules are no longer able to absorb the pollutant and the wearer is no longer breathing ...