ZS Instruments manufactures both Incremental and Absolute Rotary encoders as well as high precision Angle Encoders. Angle and Rotary Encoders operate in similar ways but differ in speed, levels of accuracy, and applications.
All of our encoders feature time proven optical technology. Encoder gratings are produced in a state-of-the-art Class 100 cleanroom which maintains an extremely low level of airborne particles. Temperature, humidity, and vibration levels are also tightly controlled during the manufacturing of glass gratings to ensure consistent quality and precision.
Many production operations are performed on highly specialized machines that we designed and built ourselves. This equips us with many capabilities unmatched by any other company in the United States.
Angle encoders typically have errors in the range of ±1 to ±5 arc seconds with sub arc second accuracies available for specialty applications. They are used for precision positioning and synchronization of rotary tables, industrial robots, telescopes, satellite antennas, etc.
Typical line counts of modern angle encoders starts at 18,000. Resolution is then quadrupled by the quadrature scanning method and can be further extended with either built-in or external interpolation circuitry.
Rotary encoders generally have errors greater than ±12 arc seconds. Applications include servo motor feedback, speed control, robotics, conveyors, etc.
Mainstream rotary encoders are operable at speeds up to 12,000 RPM, and a typical maximum line count is around 5,000.
Our Rotary and Angle Encoders can be used as a direct bolt on replacement for majority of 3-rd party encoders on the market! See below for a list of some of the most popular encoders we replace: