Magnetic flowmeter with verification
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United States of America Patent
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-
Jul 6, 2010
Grant Date -
Apr 3, 2008
app pub date -
Sep 28, 2007
filing date -
Sep 29, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A magnetic flowmeter is provided including a magnetic flowtube arranged to receive a flow of process fluid. The magnetic flowtube includes a drive coil and at least one sense electrode. Measurement circuitry is coupled to the flowtube and is configured to provide a drive signal to the drive coil and measure flow of process fluid through the flow tube based upon an output from the sense electrode. A memory contains a stored value related to a nominal parameter of the flowtube. Verification circuitry is arranged to measure a parameter of the magnetic flowtube and responsively provide a verification output related to operation of the magnetic flowmeter based upon a comparison of the measured parameter and the stored value.
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