Contact-free DC-Operated Rotary Position Sensors - Macro Sensors

May 6, 2008
Macro Sensors introduces a new series of contactless, fractional-turn, rotary position sensors that provide an absolute output proportional to shaft rotation over a total range of up 120º. The RSE 1500 Series Rotary RVDT Position Sensors are ideal for measuring the angular displacement of rotating elements such as quarter-turn ball and butterfly valves, air flow dampers, mail sorters, and diverter gates used in packaging and postal sorting machinery. Units are also useful for other limited rotation applications requiring high reliability such as pedal position sensing for mobile equipment such as lift trucks, stackers, golf carts, and lawn tractors, or throttle lever position sensing in boats, cranes, and articulating-arm utility service vehicles. Although their shafts can rotate a full 360º, the RSE 1500 Series Rotary RVDT Position Sensors measure shaft angle position over a nominal range of 120º. Units can operate in 0° to 30°, 60°, 90°, or 120° rotation ranges. Contactless inductive technology enables these rotary position positions to offer high accuracy and repeatability with exceptional reliability. Units exhibit a linearity error of less than 0.10% of full range output while operating over temperatures from 0ºF to 185ºF (-20ºC to 85ºC). The RSE 1500 Series Rotary RVDT Position Sensors utilize built-in electronics to offer a DC input/output configuration. Operating from a nominal 24V DC power supply, units supply a true 0-to-10V DC output. The absolute output characteristic makes the RSE 1500 Series superior to incremental output sensors like optical encoders that lose their position information in the event of a power failure. Built for long life, units are enclosed in a 1-1/2 inch diameter anodized aluminum shell and have a 0.250” stainless steel shaft running in high performance ball bearings. The aluminum-mounting flange has a 0.750” diameter center pilot for locating centrally in a fixture. Units are also environmentally sealed to IEC IP-66.