Flow rate sensor

Details Flow rate sensor Flow rate sensor

2011-05-17

2011-05-17

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

Using rotating member with particular electrical output or...

Reexamination Certificate

active

07942070

ABSTRACT:
The invention relates to a flow sensor having a measuring chamber to which a fluid whose volume and/or rate of flow is to be measured is supplied and then drawn off. Inside the measuring chamber elements of a measuring mechanism are mounted so as to freely rotate. The sensor is also provided with a magnet which produces a magnetic field inside the measuring chamber and in close proximity thereto. At least one sensor device measures the magnetic field and/or changes in the magnetic field. The sensor device for measuring the magnetic field is provided with at least one giant magnetoresistance sensor.

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GMR Sensors Data Book, NVE Corporation, Eden Prairie, Minnesota, Apr. 28, 2003.

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