Machine Design

Noncontact Rotary Sensor

The RFC Series of magnetic-field sensors have no moving or mechanical parts to wear or break.

The sensor contains an integrated circuit that outputs an analog signal representing the calculated rotational angle of a magnetic field from 30 to 360° in 10° steps. The sensor is sealed to Class IP69 and is insensitive to dirt or dampness. Electrical connections are via shield cable with three lead wires. The device provides 12-bit resolution, independent linearity to 0.5% of the measurement range, and repeatability of <0.03%. Two voltage output options are available as well as a redundant output using a six-wire shielded cable.

Novotechnik U.S. Inc., 155 Northboro Rd., Southborough, MA 01772, (508) 485-2244,

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