FLOW METER CALIBRATION & RECALIBRATION Flow meter can be calibrated using any of these following methods, 1, Wet calibration method using the fluid flow. 2, Flow rate measurement of physical dimensions. 3, Electronic or mechanical dry calibration methods.
It is common to make measurements employing a series of several instruments acting together. By using separately calibrating the segments of a system, gives adequate accuracy rations for each calibration and calculate the overall system accuracy by the previously described method. Wet Calibration
In a wet flow meter calibration method, using actual fluid flow, normally provides the finest calibration accuracy for a flow meter and sees use where accuracy could also be a major concern or when the structure of the meter doesn't permits itself to any other methods. Precision flow meters usually see wet calibration at the time of manufacture. After maintenance, one must often replace and re-calibrates them. The right time interval between these calibrations varies relying on the user’s experience with the meter and thus the importance of the measurement. When performing the calibration according to the initial specification of the manufacturer, only if the adequate facilities are available. Otherwise specify the minimum value you'd wish to calibrate, the quantity of points you are taking, and thus the fluid viscosity.
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