Acuity AR1000 Long-distance Laser Sensor

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The Acuity AR1000 Long-distance Laser Sensor measures targets from 0.1 m up to 30 m without the use of reflective targets. It can work with opaque targets, including glowing steel at temperatures up to 1000°C. The accuracy is typically ±3 mm, depending on the reflectivity of target surface, ambient light and temperature conditions. Dark-coloured targets may decrease the laser’s range and accuracy.

In simple sampling modes, AR1000 self-determines the optimal sampling speed, waiting until it collects enough light to make an accurate measurement. Typical sampling output rates are 6 Hz, but 50 Hz sampling is possible at close ranges to white targets. For long-distance measurements, a larger target with a retroreflective target material can be used to increase the maximum measurement range to 150 m. The AR1000 has a Class 2, red visible laser diode for simple aiming and set-up. The spot size is 5 mm as the light leaves the laser, and the beam has a divergence of 0.6 mrad.

A standard RS232 or optional RS422 serial interface is available for communication with a computer or PLC. The AR1000 also comes with a standard, 4–20 mA analog current loop output. The analog output can be programmed to have a custom measurement span, and the minimum and maximum currents can be set to any points in the laser’s range. The AR1000 has a single limit output for indicating alarms. This can be useful for triggering an external device when a target reaches a set position.