Rugged shaft operated rotary position sensors

Shaft operated rotary position sensors

Two new rotary position sensors aimed at the automotive sector feature long mechanical life and rugged design for harsh environments.

Curtiss-Wright’s Industrial division has announced the launch of the SRH301 and SRH302, a new range of shaft-operated, rotary position sensors offering an optimal combination of performance, safety and cost for OEMs designing vehicles and control systems.

With a low-profile sensor body depth of 17.3mm and using the popular 28mm diameter flanged housing with crush-proof mounting zones, these sealed IP69K-rated sensors offer exceptional performance against water, dust, shock, vibration and temperature. The SRH301 and SRH302 rotary position sensors – from the Industrial division’s brand family of Penny & Giles – are ideal for use in challenging environments and as a cost-effective product for medium-volume applications where a wide range of options or degree of customisation may be required.

The sensors can be powered from either a 5Vdc regulated supply or from a varying voltage in the range of 9-30Vdc, such as a vehicle’s battery.

The SRH301 is a 3-wire, single output variant with a supply current rating of less than 17.5mA whilst the SRH302 is a 6-wire, dual-redundant output variant with a supply current rating of less than 35mA. The dual-die sensor has two completely independent power connections and output channels for full electrical redundancy.

All variants of the SRH301 and SRH302 rotary position sensor use proven, wear-free Hall-effect sensing technology to provide a long mechanical life. There is a choice of two shaft configurations, both compatible with existing de-facto industry standards for straightforward inter-changeability on existing equipment. The electrical output spans of both models can be set to correspond to rotations of 20 to 360 degrees in 1 degree increments. Factory-programmable electronics can be set to one of two analogue voltage output ranges (0.5-4.5V or 0.2-4.8V) or one of three PWM frequencies.

Connection options are industry-standard AMP Superseal or Deutsch DT04 series connectors, or simple 18AWG flying-leads for customer termination. The sensor can also be supplied with a protective NC10 flexible conduit for the cabling.

The SRH301 and SRH302 are designed to complement Curtiss-Wright’s already highly-respected portfolio of rotary position sensors, which provide exceptional performance and safety for use in harsh or rugged environments.

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