Characteristics adjusting means of physical quantity sensing device and thermal type air flow measuring instrument

摘要

The output characteristics of the sensing device or the control quantity of the sensing element can be adjusted by extracting or leading an adjusting terminal in addition to a power source terminal, a ground terminal, an output terminal and the like outside a housing containing and protecting an electronic circuit. Further, by arranging the adjusting terminal inside a connector housing containing terminals such as the power source terminal, the ground terminal, the output terminal and the like, contact of foreign objects with the adjusting terminal is prevented and the terminals are waterproofed for preventing corrosion since an associated connector is attached to the connector when the sensing device is actually used.