As parts and components continue to shrink in size, accurate measurement remains critical. Fortunately, newer encoders can deliver the needed accuracy.
The ATOM non-contact optical linear and rotary incremental encoder system, for example, combines miniaturization with leading-edge dirt immunity, signal stability and reliability. With a read head as small as 6.7 x 12.7 x 20.5 mm, this miniature encoder uses filtering optics with Auto Gain Control (AGC) and Auto Offset Control (AOC) for exceptional signal stability and dirt immunity. It fits applications in laser scanning, precision micro stages, semiconductor, medical, DDR motors, microscopy, scientific research, and space-critical motion control, inspection and metrology.
For accurate metrology, the ATOM features low Sub-Divisional Error (SDE), low jitter and long-term reliability. It has analog speeds to 20 m/s (29,000 RPM on a 17-mm disc) and digital resolutions to 1 nm when used with Renishaw interpolation electronics. The read head includes a set-up LED for quick and easy installation, and an auto-calibration routine for fast optimization. Scale options include linear and rotary (angle) scales in stainless steel and glass.
The ultra-compact read head is available with either high-flex cable or Flexible-Printed Circuit (FPC) output, in both 20 µm and 40 µm scale options, with compact interface electronics in ACi and Ri options. The FPC variant reduces the overall package size and allows integration with ACi. A variety of high-accuracy scales is available, including industry-standard stainless steel tapes, high accuracy linear glass spars and rotary glass discs from 17 to 108 mm in diameter.
Optional interfaces support interpolation factors to x20,000. Designers can also use the sinusoidal signal output from the read head for direct connection to analog drives and controllers. ATOM is CE-approved.
Filed Under: TECHNOLOGIES + PRODUCTS, Encoders • linear