A large hydro electric dam is using the Acuity AR2000 laser sensors to position a large bridge crane in real time. The AR2000 laser sensor can measure out to over 325 feet with an accuracy of better than +/- 0.040″ at up to 20 measurements per second. The sensor has a built in display for easy programming and provides RS232,RS422 and RS485 outputs. The sensor uses a very visible Class 2 laser sensor that can be seen at up to over 650 feet. With a cooperative target the laser can measure as far as 1,640 feet.
Two of the AR2000 models are mounted on either side of the crane and measures the position of the crane to keep it from locking up. The AR2000 can be programmed to output up to 100 Hz at an accuracy of +/- 0.125″ or better.