When the incremental rotary encoder shaft rotates, there is a corresponding pulse output. The discrimination of the direction of rotation and the increase or decrease of the number of pulses are realized by the rear direction judgment circuit and counter. The starting point of the counting can be setting freely, and the infinite cumulative and measurement of multiple circles can be realized. When the number of pulses is fixed and the resolution needs to be increased, the original pulse number can be multiplied by using two signals of 90° phase difference A and B.

Rotary encoder is the sensor which could convert the shaft mechanical displacement to digital or pulse signals. On the incremental encoder disc， there are many square holes equally spaced. The rotary encoder could output the pulse signal through the electrical part reading the holes on disc.

Magnetic encoder is mainly including a magnet and a PCB which could read the magnet N and S poles. And then the sensing parts could tell the rotational position information in the form of signal output. Magnetic encoder has the advantages of anti-shock, reliable performance, simple construction. Incremental magnetic encoder is with lower cost than optical encoder. Optical encoder 's resolution depends on the lines on glass disc. The bigger disc, the more lines, the higher resolution. Magnetic incremental encoder can be in high resolution with small size.

Optical rotary encoder has the features of versatile, compact and flexible, photoelectric sensing technology, high accuracy, high precision, heavy duty bearing, long lifetime,high frequency response, universal mounting dimensions and high resolution. Optical pulse encoders apply to the lift, textile machines, cnc spindle, packing machines and conveyor industry.

The digital encoder is always used with motors to feedback the shaft position of the motor. Rotary optical encoder has the features of light weight, compact size, high precision, low price, high quality ,imported bearings and high protection class .The rotary transducer is widely applied in light industry such as printing and packaging industry.

Motor shaft encoder is one type of rotation sensor. Currently, it is the most often used sensor. The motor shaft encoder includes optical disc and photoelectric detecting parts. The optical disc and motor shaft rotate at the same speed. The led electrical parts detect it and output pulse signals at the same time.

Incremental optical encoder is a device converting physical data to digital mode. In the motion control systerm, the function of incremental optical encoder is converting angle and position information to digital pulse signal. The A,B,Z 3 channels output in wave form. Direction and speed can be judged from the 3 channels.

The rotary incremental encoders passed the certification of CE ISO9001 & ROHS and the manufacturer of the incremental encoder has high quality control, better delivery control and better cost control.The rotary incremental encoders are applied to the lift, textile machines, cnc machine tools, packing machines and conveyor industry.

Gear tooth encoder uses American advanced technology R&D TMR sensor with high sensitivity and response speed, and has high superiority with gears. Gear tooth encoder has the features of non-contact sensing method to detect the rotating position and speed; sturdy and durable, easy to install, optional various output mode, direct drive, without indirect transmission error; small sensor head suit for smaller installation spaces. Compact protection class (IP68) for hash environment; long term reliability and simple installation.The sensor passes the certification is CE ISO9001 & SGS and widely used in numerical control machine, textile industry and packing machinery, etc.