Isolation diaphragm assembly for pressure transducers and method

Details Isolation diaphragm assembly for pressure transducers and method Isolation diaphragm assembly for pressure transducers and method

1978-05-08

1980-04-29

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With protective separator

29454, 73715, 228135, G01L 708

Patent

active

041999916

ABSTRACT:
An improved isolation diaphragm assembly for use in pressure transducers includes an open plenum containing an inert transmission fluid such as silicone oil. The plenum opening is bridged by a corrugated, circular diaphragm which has been tack welded at spaced locations on its periphery and then deformed into an underlying circular groove in the transducer housing, thereby providing a smooth sealing surface between the tack welds and the deformed portion. A domed cover having an O-ring seal contacting the smooth sealing surface is attached to the transducer housing so that a fluid whose pressure is to be measured may be introduced on the other side of the diaphragm from the inert transmission fluid. A method of manufacture is also disclosed.

REFERENCES:
patent: 1763354 (1930-06-01), Ileman
patent: 4046010 (1977-09-01), Akeley

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