DETECTION METHOD OF BLOCKAGE IN CORIOLIS FLOW METER, AND CORIOLIS FLOW METER Russian patent published in 2014 - IPC G01F1/84 

FIELD: measurement equipment.

SUBSTANCE: invention relates to a method for detection of complete or partial blockage of a measurement tube (A; B) of Coriolis flow meter (2) that can be installed in a pipeline and that has a measuring converter of a vibration type at least with two in-parallel installed measurement tubes (A, B) that are favourable in hydrodynamic ratio. The method involves steps of measurement of a flow in a subset, which moves in a subset of measurement tubes (A, B), and comparison of a flow value obtained as per this measurement with an expected test value for the same subset. The test value is determined as per full mass flow rate determined within the framework of Coriolis measurement of mass flow rate. Besides, the method involves a step of detection of blockage at least of one measurement tube (A; B) of a measuring converter in case the value of the flow in the subset differs from the test value by more than one limit value.

EFFECT: reliable and timely detection of full or partial blockage of one or more measurement tubes available in a Coriolis flow meter.

14 cl, 4 dwg