Detecting unit of coriolis quality flow meter

Abstract

A detection unit of Carioles mass flowmeter is prepared as fixing central magnetic conductor and ring magnetic steel on base to form circular gap between the two and to form uniform parallel magnetic field, moving detection coil and coil frame in formed circular gap to cut magnetic line for outputting signal in proportion to moving speed.

Description

technical field [0001] The invention relates to a detection unit of a Coriolis mass flow meter. Background technique [0002] Coriolis mass flowmeter (Coriolis mass flowmeter, referred to as CMF) generally uses a magnetoelectric method to convert the vibration signal of the flowmeter into an electrical signal, and uses a circuit to detect the phase difference of the two signals proportional to the mass flow rate, and then solve the problem. The mass flow rate of the fluid. The detection unit is the key component of the CMF to pick up the signal, which affects the measurement accuracy of the CMF. At present, the more common magnetoelectric detection unit generally adopts the method of cutting the magnetic force line by the coil to realize the conversion from the mechanical vibration signal to the electrical signal. figure 1 It is a structural schematic diagram of a traditional detection unit, which is mainly composed of a base 1', a column magnet 2', a coil 3' and a coil fr...

AI Technical Summary

Problems solved by technology

Therefore, the traditional magnetoelectric detection unit has nonlinear influence factors, and the non-uniformity of the direction and density of the magnetic field is the main reason for this nonlinear influence

Images