DIFFERENTIAL PRESSURE SENSOR UNIT
Document Type and Number:
Japanese Patent JP2793796
PURPOSE: To facilitate assembling and disassembling by reducing the number of part items in a differential pressure sensor unit.
CONSTITUTION: In a differential pressure sensor unit constituted so as to detect differential pressure between two fluid pressures by a strain detecting part 11 arranged in a straining part of a pressure receiving part by respectively impressing the fluid pressures on both obverse and reverse of the pressure receiving part 10, the differential pressure sensor unit is composed of two fluid pressure introducing members 1 and 2 to introduce respective ones of the two fluid pressures and a differential pressure detecting member 3 which has the pressure receiving part 10 and detects differential pressure by the strain detecting part 11. The differential pressure detecting member 3 is interposed between the two fluid pressure introducing members 1 and 2, and this differential pressure detecting member 3 has an outer peripheral surface opposed to one fluid pressure introducing member and an inner peripheral surface opposed to the other fluid pressure introducing member, and has two sealing members 16 and 19 to contact with respective ones of the inner peripheral surface and the outer peripheral surface.
June 19, 1998
February 05, 1996
HITACHI CONSTR MACH CO LTD
G01L13/06; G01L9/00; (IPC1-7): G01L13/06