Patent ID: 7159465
Filing Date: 2007-01-09
Classification: G01L,Y10T

Abstract:
1. A fluororesin thin film diaphragm pressure sensor, comprising: a pressure-sensing element having a pressure-receiving part with a deposition electrode formed on each opposing surface of sapphire or alumina ceramic diaphragms which are provided in opposing relation to each other, and a welding portion on a portion of the surface of each of the diaphragms; a fluororesin base for securing the pressure-sensing element at the welding portion of the pressure-sensing element; and said pressure-sensing element being coated with a fluororesin thin film having a cross linked structure, said pressure-sensing element and said fluororesin base being welding together via said fluororesin thin film having a cross linked structure; whereby a measured pressure of a medium is transferred to said pressure-receiving part and variations in the distance between the deposition electrodes formed on the opposing faces of the opposing diaphragms respectively cause a change in capacitance.