Article | April 14, 2019

A Guide To Ultrasonic Flow Meter Calibration

Source: KROHNE, Inc.

Calibration is a significant factor in the performance of ultrasonic flow meters, but the timing is critical to minimize the impact on operations.

Ultrasonic flow meters — which rely on high-frequency sound waves for more precise readings — are ideal for a variety of applications because they don’t have moving parts and are not subject to drift over time. However, these meters measure fluid velocity, so they strongly depend on a known cross-sectional meter area for volumetric flow metering. Thus, any change in that area caused by buildup or corrosion may influence the volume accuracy.