Whether you're looking for an upgrade from your old sensor, or facing hazardous flow measurement conditions, Teledyne ISCO has a solution for you. Introducing LaserFlow, the only non-contact flow measurement device to read below the surface. The LaserFlow® device can be programmed to take a velocity measurement at single or multiple points below the water's surface. We also offer our intrinsically-safe LaserFlow Ex, specifically designed with safety in mind. For applications within the United Kingdom requiring certification by The Environment Agency, LaserFlow is designated MCERTS Class 2.