A flowmeter is a tool that is used to measure the flow rate of a gas or fluid and then shows the flow reading to the instrument operator by means of an indicator, either analog or digital output. In general, flowmeters offer vital measurement data to industry types, from pharmaceutical to Oil & Gas. The flowmeter types used here refer to closed pipe type flowmeters and not open channel systems. The flow rate denotes the average velocity at which a gas or fluid moves through the pipe. To guarantee the flow meter indicates or outputs a reliable and precise reading, the flowmeter must be calibrated consistently.
What is Flow Meter Calibration?
Calibration is the procedure of checking an instrument to check it is correct. Flowmeter calibration is the same method where the measurement is flow. Calibration of a flowmeter can be attained in one of the numerous ways, but generally includes the comparison of the flowmeter against a reference standard of higher precision. Calibration is a crucial part of an instrumentation system to promise a line of traceability of the measurement system is maintained. To understand the flowmeter performance over a period of time, flowmeter calibration must always be conducted on an “As Found” basis so meter drift analysis can be measured. With additional customer agreement, a further adjustment of the flow meter reading may be performed to reduce the flowmeter errors.
Flowmeter Calibration Processes?
We describe the various flowmeter methods and procedures associated with liquid flowmeters. Then will discuss the calibration methods for air and gas flowmeters. Liquid flow calibration can be done in numerous ways, but always includes the comparison against a standard, this may be a primary or secondary reference standard, dependent upon the precision required. The three central calibration principles for the Process flow meter calibration system use Gravimetric, Volume or transfer standard calibration methods.
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