초록 ▼

A media compatible package for a pressure sensing device is made from a non-corrosive, highly chemical resistant material. The package includes a base which holds a printed circuit board having a pressure sensor mounted thereon. A sealing member is placed on the circuit board encircling the pressure

A media compatible package for a pressure sensing device is made from a non-corrosive, highly chemical resistant material. The package includes a base which holds a printed circuit board having a pressure sensor mounted thereon. A sealing member is placed on the circuit board encircling the pressure sensor and a diaphragm is disposed on the sealing member. A fluid port is attached to the base and compressingly engages the diaphragm creating a sealed chamber around the pressure sensor. The sealed chamber is filled with a pressure transmissive fluid such as oil through a fill hole provided in the printed circuit board. This configuration allows the sensor package to be easily assembled with ordinary components and provides a design where all exposed surfaces of the package can be made from a highly corrosion resistive material.

대표청구항 ▼

[ What is claimed is:] [1.]1. A pressure sensing device comprising:a housing defining a fluid channel therethrough;a circuit board mounted within the fluid channel;a pressure sensor attached to the circuit board, the pressure sensor generating a signal in response to a pressure sensed thereon and co

[ What is claimed is:] [1.]1. A pressure sensing device comprising:a housing defining a fluid channel therethrough;a circuit board mounted within the fluid channel;a pressure sensor attached to the circuit board, the pressure sensor generating a signal in response to a pressure sensed thereon and communicating the signal to the circuit board;a sealing member disposed on the circuit board and enclosing the pressure sensor;a diaphragm disposed on the sealing member defining an enclosed chamber between the diaphragm and the circuit board, the pressure sensor being within the enclosed chamber, and the diaphragm being positioned having one surface in the fluid channel;a pressure transmissive fluid filling the enclosed chamber such that a pressure applied to the diaphragm is transmitted by the pressure transmissive fluid and sensed by the pressure sensor; andthe circuit board, the sealing member and the diaphragm being compressively held together within the housing such that the enclosed chamber is sealed.