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How does it work?

Turck’s new rotary sensor provides 360° angular measurement by utilizing resistance inductive capacitance (RLC) technology. Just like the Qtrack and its miniature version (the Q17), the rotary sensor incorporates an advanced microprocessor along with precisely positioned emitter and receiver coils on a printed circuit board. The sensor and its positioning element are separate pieces; essentially two inductively coupled circuit boards.

Why would you use it?

Since the rotary sensor is separate pieces, it may be mounted in a variety of unique ways, such as directly on to a rotating shaft, without experiencing the wear common to these types of sensors. The non-contact nature also compensates for both lateral (3mm offset) and vertical (6mm offset) alignment error. LED indication flashes a warning when the positioning element is on the edge of these tolerances. It also compensates for application-specific bearing tolerances, such as vibrations that are caused by the jolting of shafts. Other position devices are based on magnetostrictive technology and require some form of a magnetic element. This results in sensitivity to electrical noise and may cause metal shavings to build up. The rotary inductive sensor is completely immune to EMC interference.

Where would you use it?

The rotary sensor is IP67-rated with a temperature range of -40°C to 75°C, making it perfect for outdoor applications. It can be used to measure the angle for a variety of applications.

• Solar panel tracking
• Wind turbine blade pitch
• Crane positioning
• Boom angle
• Platform rotation
• Gate or door position

By: Bryan Schmechel

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