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Title: USING CONTROL CHARTS TO PREDICT FAILURES OF MEASUREMENT DEVICES
Author: ZAKI HUSAIN
Source: 2022 International School of Hydrocarbon Measurement
Year Published: 2022
Abstract: Control Chart of a flow metering device is the historical documentation of the performance of the meter. Control chart of a flowmeters is typically the Meter Factor (MF) of the flowmeter plotted or tabulated in a chronological order. Figure 1 is an example of the control chart of a flowmeter that was installed to monitor flowrate for a process control application of a flowing fluid at different operating flowrates and temperatures and the flowmeter was calibrated once a week. The flowrate during proving of the meter varied over the range of 62 to 85 percent of the maximum flow rate range of the meter, while the fluid temperature varied between 55 and 83 degrees Fahrenheit. The desired measurement uncertainty for the process control was +/-0.05%. Although the baseline calibration plotted data of the flowmeter indicated some variations in meter factor from week to week, performance of the meter was within the acceptable limits of the process application.

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