Patent ID: 9054222
Filing Date: 2015-06-09
Classification: G01L,H01L

Abstract:
1. A pressure difference sensor, comprising: a capsule, which has a ceramic capsule body, said capsule has a transducer seat in its interior, a semiconductor pressure measuring transducer core arranged in said transducer seat, which has a measuring membrane body and at least one support body, said measuring membrane body is connected along a peripheral edge pressure-tightly with said at least one support body, said support body has at least one pressure inlet opening; and a first duct and a second duct extend from an outer surface of said capsule into said transducer seat, wherein: said pressure inlet opening communicates with the first duct; a first side of said measuring membrane, which faces said at least one support body, is contactable through said at least one pressure inlet opening with a pressure introduced through said first duct; said at least one support body contacts a pressure-bearing joint, which surrounds said first pressure inlet opening pressure-tightly, surrounds the opening of said first duct into said transducer seat, and is connected pressure-tightly with a wall of said transducer seat; and a second side of said measuring membrane, which faces away from said first side of said measuring membrane, is hydraulically isolated from said first side of said measuring membrane and communicates with said second duct.