Direct detection device for leaking gas monitors and turns off connection for gas appliance and uses hose enclosed in sleeve which, after it enters device, has outlet directed at gas sensor

摘要

The hose (3) supplying a gas appliance (1) is enclosed in a sleeve (4) which, after it enters the device, has an outlet directed at a gas sensor (5). If the hose leaks gas accumulates in the hose and is detected by the sensor. The device initiates closure of a shut-off valve (10) and audible (6) and visible alarms (7). Alternatively, the sleeve can be gas tight and a leakage detected by the deformation of the sleeve due to gas pressure.