MSE offers three optical velocity sensors that cover the gamut from boundary layers and microchannels to free-stream facility and field measurements. The miniLDV is a compact laser Doppler velocimeter unlike any other on the market today and features standard standoff distances* from 33 to 240 mm (1.3 to 9.4 inches) and can be ordered in one, two, or three-component assemblies. The microV is a unique time-of-flight sensor which, with a standoff distance* of just 7.4 mm (0.29 inches) can perform measurements in tight spaces where the miniLDV is simply too big. The microS, another technology exclusive to MSE, uses diverging interference fringes to directly measure the velocity profile extremely close to a surface - at distances* of either 75 or 135 microns. All three sensors can measure speed and direction simultaneously. No external laser is necessary, and all three sensors are self-aligning and can optionally be battery-operated.

*Standoff distance is measured in air. Distances will be longer in water.