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Multi-Turn Rotary Sensor Tracks Position With No Power

Thu, 03/10/2011 - 5:58am

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Multi-Turn Rotary Sensor Tracks Position With No PowerNovotechnik U.S. has introduced a new series of non-contact sensors that combine an angular position sensor with resolution of 0.1° and a rotation counter. The RSM 2800 Series supplies absolute position values and rotational counts up to 16 turns without mechanical gearing, batteries, or optics. It works using magneto-resistive technology.

The RSM 2800 tracks and permanently stores shaft rotation as well as position when power is lost. Upon restoration of power, it detects the new position, calculates the difference to automatically provide accurate position and count. Position and count information can be retained without power for years.

Key specifications include: diameter of 30 mm, shaft diameter of 6 mm, independent linearity up to ±0.25%, electrical range up to 5,400°, 16-bit resolution (0.08°), and repeatability of ±1 LSB.

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