基本信息
摘要：1418835 Gas detector HONDA GIKEN KOGYO KK 5 June 1973 [13 June 1972 (2)] 26878/73 Headings G1B and G1N A gas or vapour detector finding application in testing for alcohol in a driver's breath, is illustrated with reference to Fig. 1 and comprises a body 4 having at one end an inlet 1 and having its other end formed to serve as a hand grip 2. Positioned within the body are:- a suction fan 5 for drawing in gas or vapour, a gas or vapour sensitive semi-conductor element 6 located downstream of the fan, a compartment for an energy source (e.g. batteries 3) for operating the fan, indicator components 7, 7a, 7b for indicating sensing of gas or vapour, and an operating switch mechanism 8, 8a, 8b. An exhaust opening is provided at 11. To prevent cooling of the semi-conductor by the gas flow, there may be provided an obstructing plate (13).
摘要附图：
