| 摘要 |
An apparatus and methods for detecting the presence of gases is described. The gas detection apparatus (10, 510) includes, a housing (30) adapted to be in fluid communication with a duct (504) of a particle detection system (500), and at least one gas detector (42, 43) sensitive to a target species arranged in fluid communication with the housing (30) to detect the presence of the target species in at least part of the air sample flowing in a duct (504). In one form the gas detection apparatus (10, 510) forms part of a system (700) for detecting a condition in an environment that includes, a particle detector (502); a duct system (504) in fluid communication with the environment and the particle detector (504) and an aspirator (518) to draw an air sample flow (72) from the environment to the particle detector (502). |
