Electromagnetic flow meter with reduced power consumption...

Details Electromagnetic flow meter with reduced power consumption... Electromagnetic flow meter with reduced power consumption...

2007-12-18

2007-12-18

Wachsman, Hal (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C702S047000, C073S861110

Reexamination Certificate

active

11201906

ABSTRACT:
An electromagnetic flow meter of a switching control system in which a DC voltage is applied to an exciting coil via switching elements, a direction of an exciting current flowing through the exciting coil is switched over at a predetermined excitation timing, and the switching elements are turned ON or OFF so as to hold the exciting current to be a predetermined value. The electromagnetic flow meter has first and second detection resistors which are connected in series to ends of the exciting coil via the switching elements, respectively, wherein a midpoint of the first and second detection resistors is grounded to set a voltage of the midpoint as a circuit reference voltage.

REFERENCES:
patent: 4462060 (1984-07-01), Schmoock
patent: 4488438 (1984-12-01), Tomita
patent: 5621177 (1997-04-01), Torimaru
patent: 6804613 (2004-10-01), Ishikawa et al.
patent: 2002-188945 (2002-07-01), None

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