Electromagnetic flow meter
AssigneeYokogawa Hokushin Electric Corporation
InventorsHiro Yamasaki, Tung Jin Chin, Chuji Akiyama
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Abstract
An electromagnetic flow meter includes a fluid-carrying conduit. A signal detecting element detects an electromotive force induced in the fluid in the conduit to produce a first detecting signal. A conduit voltage detecting element detects a voltage of the conduit to produce a second detecting signal. An electrical energy applying device is responsive to the first and second detecting signals for applying a selected amount of voltage to the conduit so that the voltage of the first detecting signal and the detected voltage of the conduit become equal to each other, whereby a profile of the voltage of the conduit is substantially similar to a profile of the electromotive force at least at a position of the signal detecting element.
Claims9
An electromagnetic flow meter comprising:
- (a) a conductive conduit through which a fluid flows;
- (b) means for applying a magnetic field to said conduit to induce an electromotive force in said fluid;
- (c) signal detecting means for detecting the electromotive force induced in said fluid to produce a first detecting signal;
- (d) means disposed in the vicinity of said signal detecting means for detecting a voltage of said conduit to produce a second detecting signal;
- (e) electrical energy applying means responsive to said first and second detecting signals for applying a selected amount of voltage to said conduit so that the voltage of said first detecting signal and the said detected voltage of said conduit become equal to each other, whereby a profile of the voltage of said conduit is substantially similar to a profile of said electromotive force at least at a position of said signal detecting means.
Dependencies are inferred from the claim text.