Capacitive encoder
Mini encoder for robotics and medical technology
Since March, Maccon has been distributing an absolute encoder with an outer diameter of just 16 millimetres from Netzer. It is suitable for applications in medical technology and robotics.
The new DS-16 capacitive encoder from manufacturer Netzer with an external diameter of just 16 millimetres and absolute feedback is aimed at applications in medical technology and robotics. Until now, engineers have had to rely on potentiometers or incremental encoders for angle measuring systems of this size.
Apart from its compact size, the DS-16 also offers a high resolution of 16 bits, a high angular accuracy of 0.035° and a light weight of four grams. Feedback with BiSS-C or SSI is absolute, which means that the rotor angle is known immediately when the system is switched on.
The DS-16 uses the capacitive measuring principle and is therefore insensitive to EMC interference. EMC interference can occur in the vicinity of power electronics or in certain medical applications such as MRI technology (magnetic resonance imaging). Due to the holographic measuring principle, which conducts the signal over the full effective area of the encoder, the accuracy is less sensitive to mounting than with optical angle measuring systems. The DS-16 has no glass pane and no light source / light receiver and is therefore insensitive to dust, moisture, shock and vibration.
The hollow shaft rotor requires no integral bearing and can be mounted directly on the axis ("floating rotor"). The DS-16 encoder can be quickly calibrated using the "Electric Encoder Explorer" software from Netzer. The software confirms the correctness of the set distance between rotor and stator as well as the concentricity.
Netzer's capacitive sensors are distributed in German-speaking countries by the Munich-based company Maccon. as
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