Patent ID: 9360386
Filing Date: 2016-06-07
CPC Classification: G01F,G01L

Claim Text:
1. An amplifier-embedded pressure sensor, which is connected to a pipe including a fluid passage, comprising: a pressure detector which has a pressure-receiving surface in contact with a fluid flowing in from the pipe, and which detects a differential pressure between the fluid in contact with the pressure-receiving surface and a space where the pipe is installed and outputs a pressure signal; an amplifier circuit board which has an amplifier circuit for amplifying the pressure signal detected by the pressure detector; a housing to which the pressure detector is fixed; and a separator which is fixed to the housing and separates a space inside the housing into a first space where the pressure detector is disposed and a second space where the amplifier circuit board is disposed, wherein the housing includes an inflow port for letting cooling gas for cooling the amplifier circuit board flow into the second space and a discharge port for discharging the cooling gas from the second space, and wherein the amplifier circuit board is disposed between the inflow port and the discharge port so that the cooling gas flowing in from the inflow port cools one side of the amplifier circuit board and passes between the amplifier circuit board and the housing to cool the other side of the amplifier circuit board, and thereafter is discharged from the discharge port.