Mass rate of flow meter with electromagnetic interference compen

Details Mass rate of flow meter with electromagnetic interference compen Mass rate of flow meter with electromagnetic interference compen

1979-10-12

1981-07-21

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

G01F 180

Patent

active

042791685

ABSTRACT:
A mass rate of flow meter including an unrestrained rotor and a restrained turbine and including a magnetic coupling for generating signals in a sensing coil when a predetermined point on the rotor passes a predetermined point on the turbine. A sensing means includes a sensing coil that is in a magnetic circuit with the magnetic means and a series bucking coil that is electrically in series with the sensing coil but magnetically isolated from the magnet means. A copper sheet formed as a shorted turn is disposed between the sensing and bucking coils. A mass rate of flow meter with this structure provides signals that are relatively insensitive to electromagnetic interference.

REFERENCES:
patent: 3393388 (1968-07-01), Young
patent: 3722279 (1973-03-01), Jablonski
patent: 4056976 (1977-11-01), Hildebrand et al.

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