Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Murray F Feller0
Date of Patent
August 18, 2009
0Patent Application Number
120388840
Date Filed
February 28, 2008
0Patent Primary Examiner
Patent abstract
A magnetic flow meter employs resonant circuit principles to increase the strength of the magnetic field to produce larger electrode difference potentials so that environmental influences have less effect on the operation of the flow meter. The flow meter may use an electromagnet that is resonant with a capacitor, generally at a frequency on the order of ten kHz. In addition, the meter comprises a magnetic field sensor and timing circuits that can sample the electrode difference potentials when the field is at a maximum and the time rate of change of field is instantaneously zero. Some versions of the meter operate in a one-shot mode and others operate with a burst of drive pulses.
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