METHOD TO PROVIDE A QUALITY MEASURE FOR METER VERIFICATION RESULTS

摘要

A system for evaluating a flow rate measurement includes a flowmeter and a diagnostic system. The diagnostic system is configured to perform a diagnostic test for detecting a physical change in the flowmeter that could impair operation of the flowmeter, output a result of the diagnostic test, evaluate a reliability of the diagnostic test using information about a process condition, and output an indication of the reliability of the diagnostic test.

主权项

1. A method for evaluating a Coriolis mass flowmeter having a flowtube, a driver for driving the flowtube, a pair of sensors for sensing a vibrational response of the flowtube at different locations and providing signals representative of the vibrational response, and a processor configured to determine a mass flow rate of a fluid flowing through the flowtube based on a phase difference between the sensor signals, the method comprising:
performing a diagnostic test for detecting a physical change in the flowtube that could impair operation of the Coriolis mass flowmeter; outputting a result of the diagnostic test; evaluating a reliability of the diagnostic test using information about process conditions; and outputting an indication of the reliability of the diagnostic test.