Shaker screen is one of important equipments in the industry of oil，metallurgy，coal and timbering． The movement locus of shaker screen affects the capacity and efficiency of shaker screen to split the solid particle from crude ore directly．To test movement of shaker locus，two eddy current transducers are employed． A discussion of the usage of these eddy current transducer to test and acceleration sensors will be made．The experiment results from a real elliptic shaker screen have good agree with the design requirements．