Patent · US Expired

Differential pressure transducer

US4531415A · kind A · utility

19Cited by

3References

2Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Reiner U. Orlowski · Quickborn, DE
Rolf U. D. Kobs · Tornesch, DE
Manfred Liehr · Hamburg, DE

Key dates

Filing date	Oct 14, 1983
Grant date	Jul 30, 1985
Priority date	—
Expiry date	Oct 14, 2003

Classification

Technology area (CPC G)Physics
CPC primaryG01L9/0075
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A differential pressure transducer having a body of insulating material on which film electrodes are fixed, two diaphragms made of insulating material, and two film electrodes on the inner sides of the respective diaphragms facing the body. The diaphragms and the body together form cavities which are filled with an incompressible liquid, and the film electrodes of the body and of the diaphragms form capacitances which are dependent on the diaphragm deflection. The transducer is especially suitable for the measurement of the flow rate of explosive liquids or gasses.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.