REAL-TIME CONDITION BASED MONITORING (CBM) BASED ULTRASONIC METER (USM) ACCURACY PERFORMANCE DETECTION AND NOTIFICATION

摘要

A system (100) includes a control system (138) and a field device (200). The control system is configured to communicate data with the field device. The field device determines a baseline calibration and a characteristic curve for a process fluid flowing through the field device (505). The field device monitors an inline condition of the process fluid (525). The field device determine whether a deviation in a measurement accuracy for a fluid profile is detected according to inline evaluation criteria (530). The field device calculates a flow rate of the process fluid using a last valid characteristic curve (560).