Acuity's AR600 displacement sensor is among the most accurate optical devices in the field. The shortest-range models are capable of micron measurements at sampling rates to 1250 Hz. This Acuity laser displacement sensor is unique and has the ability to accurately measure to difficult target materials.. Acuity sensors are designed for high-demand industrial applications. Each laser displacement sensor is NEMA-4 (IP67) rated and can withstand mist and spray.