Posted to News on 30th Oct 2008, 17:15
Compact rotary sensors use non-contact technology
Novotechnik's new RFC 4000 series rotary sensors combine touchless (non-contact) technology and a small form factor. The sensor's touchless technology utilises the orientation of a magnetic field in order to determine the measurement angle. This makes the sensor suitable for applications that require mounting versatility or transmissive measurements through air or non-magnetic materials. The RFC 4000 Series is 7mm thin with a thumbprint of about one square inch.
With a two-part design - a sensor and its magnetic position marker - the RFC 4000 series is claimed to offer unlimited mechanical life. The RFC series position marker mounts on a rotary shaft, a distance from the detecting sensor component, and the magnetic field orientation is captured using an integrated circuit. An analogue output signal represents the calculated angle and is repeatable to +/-1LSB.
Specifications include a programmable electrical range to 360degrees, resolution to 12 bits, independent linearity to less than +/-0.3 per cent and an unlimited mechanical lifetime. Dust, dirt and moisture have no effect on the sensor, as it is sealed to IP67. The RFC 4000 is available with either fixed PCB pins or lead wires. The cost of the RFC 4000 series starts at $17 in 1000-piece quantities.
Follow the link for more information about touchless rotary sensors.
