KJT photoelectric speed sensor is a kind of angular displacement sensor, which consists of a disc with slit mounted on the measured shaft, a light source, a photoelectric device and an indication slit disc. With the advantages of non-contact, high accuracy, high resolution, high reliability and fast response, it has been widely used in the field of detection and control. Photoelectric sensors in industrial applications can be summarised as direct, reflective, projective three basic forms.
