SENSOR

摘要

A sensor having a detecting part for detecting an environmental value representing change in physical amount of circumference environment by a fluid flowing into externally and a controlling part for discriminating abnormality in circumference environment based on the environmental value detected by the detecting part. A separating plate is provided inside a housing so as to separate two spaces in the height direction. A detection unit is provided in one space and a sounding body is provided in the other space. Apertures are provided in a side wall, thereby opening one space to the outside environment and letting the fluid to be measured flow into the space. Then, a flow path is formed inside the space in the housing, from the side wall forming the housing toward the detection unit, thereby proactively channeling the fluid to the detection unit.