Importance

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Abstract

A fluid flow meter diagnosing the condition of its primary element or impulse lines connecting to a differential pressure sensor. A difference circuit coupled to the differential pressure sensor has a difference output representing the sensed differential pressure minus a moving average. A calculate circuit receives the difference output and calculates a trained output of historical data obtained during an initial training time. The calculate circuit also calculates a monitor output of current data obtained during monitoring or normal operation of the fluid flow meter. A diagnostic circuit receives the trained output and the monitor put and generates a diagnostic output indicating a current condition of the primary element and impulse lines.

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First Claim