Magnetic flow meter providing quasi-annular flow

Details Magnetic flow meter providing quasi-annular flow Magnetic flow meter providing quasi-annular flow

2008-09-09

2009-12-08

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

Reexamination Certificate

active

07628080

ABSTRACT:
An in-line magnetic flow meter has an electrically insulated quasi-annular voltage sensing path defined between an internal wall of a meter body and an outer wall of an axially disposed hollow tube. Although less than 100% of the fluid flow passes through the sensing region, the choice of an inner tube reduces flow impedance introduced by the meter, when compared to other meters providing a quasi-annular sensing path. In addition, by forming two electromagnet coils on a single core and using axially separated pairs of electrodes, the present arrangement allows one to provide two flow meters in the space normally occupied by one.

REFERENCES:
patent: 4454766 (1984-06-01), Reinhold et al.
patent: 6571642 (2003-06-01), Feller
patent: 6722207 (2004-04-01), Feller
patent: 6789432 (2004-09-01), Guazzoni et al.

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