External Or Internal Flow Meter Verification – An Independent Review

To increase the reliability of field devices, some manufacturers equip instruments with internal verification functions based on integrated hardware components. Procedures for the internal testing of devices are not new to the market, but rather a standard feature – at least for MID (European Measuring Instrument Directive) devices. This article looks at the advantages and disadvantages of advanced integrated verification functions for electromagnetic (MAG) flow meters with advanced integrated verification functions compared to external verification.

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