Measurement Specialties believe that their new magnetic rotary encoders offer greater durability and wider capabilities than traditional optical encoders and electro-mechanical potentiometers.
The advantages inherent in the magneto-resistive technology of the ED Series encoders provide significantly lower life-cycle costs in a wide range of industrial, equipment and material handling applications. Encapsulated electronics virtually eliminate contamination, allowing the encoders to be used in severe environmental conditions where traditional products are prohibitively expensive.
The encoders are offered in several standard configurations and as an adaptable platform for design engineers seeking proprietary custom solutions for high volume applications. Customisation, including integration with microprocessors, is supported by Measurement Specialties’ experienced worldwide application engineering team. A significant design advantage is the ability to de-couple the rotating magnet side of the sensor from the electronics package. Separation allows the sensor portion to be protected behind a non-ferrous barrier, greatly increasing the flexibility of integrating the encoders into OEM systems.
Applications include positional feedback, control knobs, motor control, servo valve positioning, steering and throttle control, pump speed and direction, camera positioning, appliances, medical and test equipment, and more. The ability to withstand harsh conditions makes the encoders ideal for off-road equipment and numerous oil and gas extraction and processing applications. With available microprocessor integration, motor designers can use one ED Series encoder to replace 8 or 16 Hall-type sensors.
Component life is far greater than potentiometers because there are no mechanical contacts. Compared with optical encoders, the magnetic devices offer longer life because they are not subject to LED degradation. They provide greater economy than optical encoders because there is no increased cost for higher resolution. The encoders can also operate over wider temperature extremes of –55° to +125°C. Standard products feature resolution from 64 to 1024 counts per rotation and integrated line driver options with active termination. Analogue versions are available with outputs from 0-5 vdc, 0.5-4.5 vdc, 0-20 mA or 4-20 mA.