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Patent Searching and Data


Title:
HIGH-TEMPERATURE PRESSURE SENSOR
Document Type and Number:
Japanese Patent JPH0719981
Kind Code:
A
Abstract:

PURPOSE: To reduce the output error caused by the change of the thermal deflection quantity (axial direction) of a diaphragm section due to the fluctuation of the temperature difference in the thickness direction of the diaphragm section.

CONSTITUTION: When the pressure of a high-temperature fluid is applied to the measured pressure applied face A of a diaphragm section 20, the diaphragm section 20 is deflected, the deflection is transferred to a strain-sensitive element 6 through pressure transfer members 7, 8, and the strain-sensitive element 6 outputs the electric signal corresponding to the received pressure. The center section of the diaphragm section 2 is recessed to the opposite side of the high- temperature fluid, a heat insulating plate shuts off most of the radiation heat radiated from the high-temperature fluid or the like to the surface A of the diaphragm section 20, thus the deflection of the diaphragm section 2 is reduced, and the output error caused by it is reduced.


Inventors:
OTAKE SEIICHIRO
HATANAKA MAKOTO
OZAKI SHINJI
NAGASE KAZUYOSHI
Application Number:
JP1993000130279
Publication Date:
January 20, 1995
Filing Date:
June 01, 1993
Export Citation:
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Assignee:
NIPPON DENSO CO
International Classes:
G01L9/08; G01L7/08; G01L9/00; G01L19/04; G01L19/06; G01L23/10; (IPC1-7): G01L23/10; G01L9/08; G01L19/04
Attorney, Agent or Firm:
大川 宏