NewTek Sensor Solutions introduced the RV series of Rotary Variable Differential Transformers (RVDT). The series offer highly accurate angular displacement measurement of rotating elements such as quarter-turn ball and butterfly valves, actuators, throttles and dancer arm tensioners used in machine-to-machine applications. With a shaft that rotates a full 360° with no stops and virtually no friction, these AC-operated rotary position sensors measure shaft angle position over a nominal range of ±30°, the company reported. A non-contacting design with few wear components gives the RV sensor a long operational life. In addition to offering good noise performance, the sensors are shock and vibration tolerant. The units operate over a temperature range of -65°F to 220°F and exhibit a linearity error of less than 0.5% of full range, the company reported.
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