AR1000 Laser Distance Sensor Long Range

Acuity’s AR1000 laser distance sensor uses continuous wave laser diodes, modulating the amplitude at high frequencies, to measure distances by measuring the phase shift of the returning light.

The AR1000 laser distance sensor can measure targets from 0.1 m (4 in) up to 30 m (100 ft) without the use of reflective targets. 

It can work with any opaque target, even glowing steel at temperatures up to 1000°C (1800°F). 

The AR1000’s accuracy is typically ± 3 mm (0.12 in), but this will depend on the reflectivity of the target surface, ambient light, and temperature conditions. 

Dark-colored targets may decrease the laser’s range and accuracy. In simple sampling modes, the 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. 

You can choose a standard RS232 or optional RS422 serial interface 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 linearity of the analog output is +/- 0.15% of the span due to the digital to analog converter, so it’s important to set the analog measurement span accordingly if you need the maximum, 3mm accuracy.