Photon Control”s Focus Probe is an optical flowmeter that provides highly accurate data independent of gas composition or contamination of the sensing elements. Using laser beams to measure the velocity of naturally occurring particulates, the flowmeter is specifically developed for flare and biogas applications with highly variable flowrates and a wide range of pipe diameters. Designed with no moving parts and featuring a high turn-down ratio of 1000-to-1, the flowmeter is immune to pipe vibration and acoustic noise. The flowmeter is also intrinsically safe and compliant with ASME Code Section VIII, Division I.