Patent ID: 8490645
Filing Date: 2013-07-23
Classification: G01F,G05D,Y10T

Abstract:
1. A pressure sensor that detects pressure of liquid flowing in a main fluid flow path, comprising: a pressure measuring unit which is installed by providing a pressure measuring space at a position branching from a straight-pipe portion of the main fluid flow path, a circulating flow path that bypasses the main fluid flow path is formed by connecting the main fluid flow path and the pressure measuring space with an inlet pipe and an outlet pipe whose pipe diameters are smaller than the main fluid flow path, wherein an exit opening of the inlet pipe and an entrance opening of the outlet pipe connected to the pressure measuring space are disposed at positions where they are mutually offset from an axial center line of the main fluid flow path, and the main fluid flow path is provided with an enlarged-diameter portion at the branching position of the inlet pipe.