Measurement of Outer Diameter and Conductivity of Nonmagnetic Pipe Using Absolute Induction Eddy Current Sensor

In order to develop the absolute induction current sensor survey ability, and realize the multi parameter survey on a single equipment, the magnetic field of eddy current was investigated and analysed. A mathematical model for measuring the outer dameter and the relative permeability based on the absolute induction current sensor was proposed, simultaneously, the measuring method was designed. Through the examination, it proved valid to the method.