The FM- and CSA-approved ST50 Flow Meter provides direct mass flow measurement with higher effectiveness at a lower cost, utilizing thermal dispersion mass flow sensing technology. The product eliminates the need for the temperature sensors, flow computers or other devices required with orifice plates, Venturis, Vortex shedding and other meters. The unique design also provides built-in temperature compensation for reliable measurement over a wide temperature range with almost no pressure-drop. The unit’s stainless steel sensing element, featuring Hastelloy-C tips, is designed for endurance and maximum performance in outdoor and field installation conditions. Its electronics are housed in an all-aluminum, epoxy-coated enclosure that is NEMA 4X (IP66) rated and it withstands operational pressures up to 500 psig [34 bar (g)].