Isolator for pressure transmitter

Details Isolator for pressure transmitter Isolator for pressure transmitter

1990-11-01

1992-03-17

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With protective separator

73708, 73727, 338 3, 338 4, G01L 708, G01L 1904

Patent

active

050957554

ABSTRACT:
In a pressure transmitter, a central region of an isolator diaphragm with a substantially flat shape at an undeflected position near room temperature has a depressed shape at a deflected position at a colder temperature. The isolator diaphragm is over a shaped concavity in a transmitter body with a concave shape which corresponds to the depressed diaphragm shape to reduce output error.

REFERENCES:
patent: 4398194 (1983-08-01), Johnston
patent: 4572000 (1986-02-01), Kooiman
patent: 4798089 (1989-01-01), Frick et al.
patent: 4934193 (1990-06-01), Hayata
"Flat and Corrugated Diaphragm Design and Handbook", by Mario Di Giovanni, Part 1, Chapters 1, 9 and 11; Part 3, Chapter 31.

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