Patent ID: 7779700
Filing Date: 2010-08-24
Classification: G01L

Abstract:
1. A pressure sensor comprising: a housing; a pair of pressure input orifices coaxially disposed on opposed end face plates of the housing; first and second diaphragms each having an outer surface serving as a pressure receiving surface and sealing the pair of the pressure input orifices; a force transmitting unit connecting central areas of inner surfaces of the diaphragms inside the housing; and a pressure sensitive element having a first end connected to an intermediate portion of the force transmitting unit and a second end connected to the housing, the pressure sensitive element having a detecting axis disposed in parallel with an axis orthogonal to the pressure receiving surfaces of the diaphragms, wherein by making grooves on flat plates, the diaphragms are formed so that the central areas to which the force transmitting unit is connected are made thicker than areas surrounding the central areas.