Differential impedance transducer makes precision measurements

Kaman’s non-contact DIT-5200 makes sub-nanometer differential measurements for an economical price. The system also offers high thermal stability, high sensitivity, and high linearity, and senses without touching the target.


Measuring presents the DIT-5200 differential impedance transducer that makes precision measurements to sub-nanometer resolution. The system also offers high thermal stability, high sensitivity, and high linearity, and senses without touching the target.

Differential systems provide greater resolution and thermal stability than single-ended systems.  The DIT-5200 is a true differential system for common mode rejection yet comes without the high price of many differential systems. Based on high-precision eddy current balanced bridge technology, this system is capable of sub-nanometer resolution.

The DIT-5200 is extremely thermally stable at +/-0.03% FS/°C, is highly sensitive up to 10V/mil, and is extremely linear to 0.1% full range.  Kaman offers this system in single- and dual-channel configurations.  The small package size of just 7.7 cubic inches leads to easy integration.

Applications for Kaman's DIT-5200 include precise alignment of fast steering mirrors, servo control position feed back, semiconductor stage positioning, angular displacement indication, X-Y orbit position feed back, and stylus position.

Kaman Precision Products


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- Edited by Amanda McLeman, Control Engineering, CFE Media, www.controleng.com

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