DEVICE FOR SELECTIVELY ANALYSING FILTERED AND UNFILTERED AIR, FOR A FACILITY FOR HEATING/AIR CONDITIONING AN ENCLOSURE

摘要

A device for analysing air (DA) equips a heating/air conditioning facility comprising a filter for at least one chemical species contained in a feed air coming from outside and/or inside an enclosure and/or for dehumidifying said feed air. Said device (DA) comprises a sensor (CA) for taking measurements representative of the concentration of said chemical species and/or the humidity in the air that supplies same, a part (PA) comprising at least three inlets positioned upstream from the sensor (CA) and supplied respectively with air coming from the outside, air coming from inside the enclosure and filtered air coming from an area of the facility located downstream from the filter, and control means (MC) for selectively controlling the passage of air through one of the inlets depending on a received instruction in order for the sensor (CA) to analyse said air. The part (PA) and the means for controlling said device for analysing air (DA) are installed upstream from said filter (FA) and downstream from a supply shutter (VA) arranged to control the supply, to the facility (IC), of air coming from outside and/or of air coming from inside said enclosure (H).