Objective To solve the zero drift problem of Coriolis mass flowmeter. Methods The zero calibration method based on Prolink industrial control software was used to measure and zero the CMF mass flowmeter, and data on indication error and repeatability were obtained. Results Before zeroing, the reading error of the Coriolis mass flowmeter was measured to be -0.85%, and it was calculated that there was zero drift. After zero calibration, the indication error of the flowmeter is -0.12%, and the measurement performance meets the requirements of the accuracy level. Conclusion After using Prolink industrial control software to adjust the zero value of the flowmeter, the influence of zero drift on the phase difference offset of the flowmeter can be eliminated, thereby improving the measurement accuracy of the flowmeter.

coriolis mass flowmeter  /  zero point  /  zero point drift  /  measurement  /  calibration