Monolithic flow tube with improved dielectric properties for use

Details Monolithic flow tube with improved dielectric properties for use Monolithic flow tube with improved dielectric properties for use

1993-10-12

1994-08-16

Woodiel, Donald

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

29595, 296021, G01F 158

Patent

active

053376072

ABSTRACT:
A monolithic flowtube for use with an electromagnetic flowmeter includes an inner portion formed of an improved purity dielectric material having a reduced number of mobile ions, a pair of electrodes adjacent the exterior surface of the inner portion and capacitively coupled thereto, and an outer layer of ceramic material adjacent the exterior surface of the inner conduit and electrodes. A method of manufacturing the flowtube includes the steps of forming a dielectric material into a substantially tubular conduit, depositing a conductive material, preferably a refractory metal, onto the exterior of the tubular conduit, forming an outer layer of ceramic material over the tubular conduit, and firing all components simultaneously in a reducing atmosphere to form a monolithic flowtube body.

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