Fluid pressure transmitter.,申请号EP19840104732-传众专利搜索

Fluid pressure transmitter.

申请公布号：EP0126989(A1)

申请号：EP19840104732

申请日期：1984.04.27

申请公布日期：1984.12.05

申请人：

HONEYWELL INC.

发明人：WAMSTAD, DAVID B.;WILDA, DOUGLAS W.

分类号：G01L9/00;G01L13/06;G01L19/00;G01L9/04;(IPC1-7):01L9/00;01L13/02

主分类号：G01L9/00

摘要：<p>A fluid differential pressure transmitter assembly includes a housing (2, 10) having a spacer (34) within the housing to minimize the internal fill fluid used to conduct fluid pressure from a fluid inlet port (4) to a pressure responsive diaphragm (26). Input pressures are applied to respective sides of the diaphragm (26) to produce an electrical signal output representative of the differential pressure from piezoresistive elements deposited on the diaphragm. The sensor (26) is electrically connected by flexible wires (30) to electrically conductive paths (32') supported on an end surface (32) of the spacer (34). The conductive paths are, in turn, electrically connected to electrode wires (38) at electrically conductive support junctions (48) between the spacer (34) and the electrode wires (38). However, the spacer (34) is supported on the electrode wires (38) at the support junctions (48) in a free floating arrangement without any other physical contact to either adjacent elements within the housing or the interior wall of the housing. Thus, physical changes to the spacer such as those occasioned by temperature changes are not transmitted to the fluid seals (42). The electrode wires (38) are arranged to pass through fluid-tight seals (42) in the transmitter housing to provide external electrical connections to the sensor while supporting the spacer within the housing.</p>