Characterized by absolute position value formation, Heidenhain’s Acanto series of length gages are suited for use in production-related metrology, multipoint inspection apparatuses and automated inspection equipment. The gages host an absolute optical encoder, so they do not need re-referencing. Also, compared to linear variable differential transformers (LVDTs), they will not drift, the company says.
The gages are based on the optical scanning of absolute graduations, which permits high accuracy at high resolution and linearity over the entire measuring length. The technology behind the scanning is similar to the optical scanning in absolute rotary encoders.
The EnDat 2.2 interface features a status request function, diagnostic capabilities and instant commissioning. It also permits high clock frequency. One notable self-diagnostic feature enables the gage to output a warning signal before the internal LED used in the optics fails due to age, the company says. During operation, valuation numbers permit diagnostics on the quality of the optical scanning. In addition, OEM-specific information can be saved in the gage’s memory
The gages measure lengths of 12 and 30 mm, and they provide IP 64 protection for use in manufacturing environments. The sleeve bearing technology enables the length gage to operate with low friction and wear, the company says.