Sorush Soltani Alavand
Farshid Soheili Najaf abadi

This paper presents a new method for finding phase difference. This method is based on trigonometryidentities. This method is used for calculating phase change in Coriolis mass flow meter (CMFM). Thischange is happened when steady state fluid passes through U-type sensor. Passing fluid makes changes inmotion form of tubes and a phase change is occurred. Motion sensors make sinusoidal signals. Afterfinding difference in phases processor used approved formulas for calculating mass flow and otherparameters in CMFM.

trigonometry identities, Coriolis mass flow meter, sensor, phase difference