Fire sources or gas impurities are detected and located in one or several monitoring chambers by a device having a main detector for detecting a fire characteristic value or a gas impurity, into which a part of the ambient air in the monitoring chambers is continuously injected by an intake unit through...http://www.google.fr/patents/US6985081?utm_source=gb-gplus-shareBrevet US6985081 - Device and method for detecting fire sources of gas impurities
Device and method for detecting fire sources of gas impurities
