ELECTROMAGNETIC FLOW METER SENSOR CAPABLE OF DETECTING MAGNETIC FIELD AND MAGNETIC PERMEABILITY

摘要

An electromagnetic flow meter sensor capable of detecting a magnetic field and magnetic permeability comprises a flange (11) and a measuring tube (12). The flange (11) is installed at two ends of the measuring tube (12). A reference coil (14) and an excitation coil (13) are fixed on the measuring tube (12). The reference coil (14) and the excitation coil (13) are separately wound and are kept at a certain distance. Among signals of the reference coil (14), a proportion of signals reflecting the main measured flux rises to over four times of that of a conventional reference coil, so that it becomes possible to measure a fluid with variable magnetic permeability, and also the zero stability and the measurement accuracy are also increased.