AR550 High Speed Laser Position Sensor

July 2, 2021

AR550 High Speed Laser Sensor is Acuity’s fastest triangulation device for dimensional and distance measurement. At sampling rates up to 70 kHz, these sensors are typically used for applications that demand high speed such as vibration measurements, scanning of roads, vehicle crash test, and ballistic measurements.


The sensor comes in one compact package size with 9 different measurement ranges: 2, 5, 10, 25, 50, 100, 250, 500, and 750 mm. The sampling rate of the AR550 can be specified and the high-speed sensor can transmit its highest sampling rates via Ethernet output. Unlike other high-speed sensors, the AR550 electronics are integrated directly inside the compact sensor. Different laser power options are available. Higher power outputs are useful in applications where the target is especially dark and far away.


Another feature of the AR550 is the versatility of its options. For example, the product has environmental endurance options to prepare it for more extreme temperature ranges, such as an internal heater that allows the sensor to be operated in temperatures down to -22°F and an air jacket that allows it to operate in ambient temperatures as high as 248°F.


  • Scanning of roads: road surfacing, road profiling, road texturing, etc.
  • Vibration measurement: speaker displacement, engine displacement, structural displacement testing
  • Capturing fast events: crash test sensors, environmental/infrastructure testing
  • High-speed measurements needed on hot targets
AR550 Model-2-5-10-25-50-100-250-500-750Distance0.6 in. 0.6 in.1 in.2 in.2.5 in.3.5 in.3 in.5 in.6 in.Range0.1 in.0.2 in.0.4 in.1 in.2 in.4 in.10 in.20 in.29.5 in.Linearity (+/-) µm0.15% of range, 500 Hz, to white target (85% diffuse reflectance)Resolution (+/-) µm0.01% of rangeWeight w/out Cable110 gLaser Class3R3B Complies with 21 CFR 1040 with Laser Notice #50
and IEC/EN 60825-1:2001Light SourceRed semiconductor laser, 660 nm wavelength or
UV semiconductor laser 405/450 nm wavelengthOutput Power?4.8 mW?20 mW?80 mWPower9 to 36V DC, 250 mA maxSample RatesMax 70 kHz via EthernetEnvironmentalNEMA – 4X, IP67. Compliant with the RoHSOperating Temp.14 to 140°F