System to detect poor process ground connections
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United States of America Patent
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Apr 12, 2011
Grant Date -
Nov 18, 2010
app pub date -
May 12, 2009
filing date -
May 12, 2009
priority date (Note) -
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Abstract
A magnetic flowmeter is disclosed that includes a pair of electrodes coupled to a process fluid and a diagnostic circuit coupled to the pair of electrodes to monitor a common mode signal. The diagnostic circuit is adapted to detect a poor ground connection associated with at least one electrode of the pair of electrodes based on line noise associated with the common mode signal.
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