Design for new displacement electric eddy current sensor

Electric eddy current sensor has the characteristics of insensitivity to medium,noncontact and all-azimuth intel ligent measurement,so it is widely used in the mental distance test.In order to improve the sensitivity and increase the detect ing distance of common eddy current sensor,a new eddy current sensor with non-contact wide linear range was designed.The re sult of experiment shows that when the probe diameter of the sensor is 50 mm,the measuring displacement at 2~29.5 mm has good linearity,but at 0~2 mm and 29.5~ 35 mm is nonlinear.