Patent ID: 9739676
Date: 2017-08-22
CPC Classifications: G01L

Claim:
1. A pressure detecting device which is mounted in a measurement target instrument, the device comprising: a strain inducer to which pressure of a pressure medium is applied and which generates strain in accordance with the pressure; and a strain detecting element that is bonded onto a surface opposite to a pressure receiving surface of the strain inducer, wherein the strain detecting element includes one or multiple central strain resistant bridges which are arranged at a central portion of the strain detecting element in a bonded surface direction, and one or multiple outer peripheral strain resistant bridges which are arranged at an outer periphery of the central strain resistant bridge, and wherein deformation of the strain detecting element caused by an external force when being mounted in the measurement target instrument is obtained through the multiple strain resistant bridges, an error of detection pressure caused by the obtained deformation in a pressure value detected through the central strain resistant bridge is corrected, and the corrected pressure value is referred to as a detection value of the pressure detecting device.