Durable rotary position sensing

Novotechnik has released the RSB-3600 and RMB-3600 single- and multi-turn Hall Effect rotary position sensors. The sensors are available in a choice of configuration options for maximum application flexibility and are housed in a 36.5mm diameter all-metal housing with a choice of solid or hollow shafts and environmental protection from IP67 to IP69K.

With an absolute 12-bit resolution and linearity of ±0.03%, output options include analogue current or voltage and incremental for the single-turn model, and analogue and high-speed SSI for the multi-turn. Aimed at positioning tasks on industrial and agricultural machinery or mobile and marine equipment, the sensors are also available in dual-channel redundant versions.

The sensors utilise Novotechnik’s Novohall process. In single-turn applications, measurements are taken across the full 360°. The multi-turn model includes Novotechnik’s Giant Magnetoresistance (GMR-Effect) principle which is said to be capable of gearless counting and storing revolutions during idle intervals. With no batteries the sensor can capture up to 16 revolutions as a ‘True-power-on’ system and provides the measured value immediately upon start-up. The combination of Novohall and GMR-Effect can be applied to and is available in shaft-driven and touchless systems without mechanical shaft couplings.