Common calibration methods include on-site dry calibration, wet calibration using standard testing rigs, and comparison with reference meters. The process checks sensor performance, excitation current, signal conversion, and output signals such as 4–20 mA or pulse outputs. Environmental factors like fluid conductivity, temperature, and pipe vibration must be considered during adjustment.

 

Calibration eliminates drift caused by aging, installation stress, or fluid erosion. Properly calibrated meters maintain accuracy within ±0.5% and ensure stable data in water supply, wastewater treatment, and industrial process monitoring.