Differential pressure transducer

Details Differential pressure transducer Differential pressure transducer

1993-04-19

1994-04-12

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73723, 313310, G01L 708, G01L 900

Patent

active

053015541

ABSTRACT:
A field emission device with an emitter on a first layer of material and an anode on a second layer of material, separated by a predetermined distance, with a sealed region therebetween. Changes in pressure external to the sealed region producing movement and consequent changes in the predetermined distance between the first and second layers, which change in distance produces a change in current between the emitter and anode. The change in current representing the change in differential pressure.

REFERENCES:
patent: 4701742 (1987-10-01), Ruehr
patent: 5163328 (1992-11-01), Holland et al.

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