Electromagnetic flowmeter with capacitance type electrodes

Details Electromagnetic flowmeter with capacitance type electrodes Electromagnetic flowmeter with capacitance type electrodes

G - Physics

01

F

324/80

G01F 1/58 (2006.01)

Patent

CA 1265199

FP-474 ELECTROMAGNETIC FLOWMETER WITH CAPACITANCE TYPE ELECTRODES Inventors: Thomas L. Picone, Robert J. Augustine, citizens of the United States and residents, respectively, Holland, Pa. and Willow Grove, Pa., and Eggert Appel, a citizen of the Federal Republic of Germany and a resident of Dransfeld, Federal Republic of Germany ABSTRACT OF DISCLOSURE A magnetic flowmeter which includes a spool formed by a metallizable ceramic whose dielectric constant is at least 25 through which the fluid to be metered is conducted. The outer surface of the spool is metallized in its central region to define a pair of capacitative metering electrodes at diametrically- opposed positions, an electromagnetic field being established within the spool whereby when the flowing fluid intercepts this field, an emf is induced therein to produce a signal at the meter- ing electrodes which is a function of flow rate. Overlying each metering electrode and projecting from the spool is a ceramic block whose outer surface is metallized to define a shield electrode which covers the metering electrode.

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