A key accessory of TEC displacement sensors is the position magnet/magnetic ring. The position permanent magnetic field of the magnet will couple with the circumferential annular magnetic field formed by the sensor after being energized, resulting in the "Widman effect" TEC standard magnetic ring has an outer diameter of 33mm and an inner diameter of 13mm. The screw aperture is 4-4.3mm and the thickness is 8mm. The matching magnetic isolation gasket has a thickness of 5mm. Other dimensions are consistent with the standard magnetic ring There are many types of magnets for TEC displacement sensors, which can be found in the download list