The FS10i Flow Meter from FCI is an SIL-2 rated thermal flowmeter offering an economical, easy-to-install solution to measure the flow rate of air and natural gas. Its compact size, plug-in wiring and inline or insertion-style threaded connection into the piping ensure quick, effective installation. The flowmeter requires no additional pressure or temperature sensors or other components to infer flow measurement. The sealed and no-moving parts sensor does not foul or clog and requires no routine maintenance to ensure years of continuous operation. The meter provides a fluid matched, calibrated and linearized 4-20 mA output of flow rate and a user-programmable high or low flow alarm/trip point with a 1A SPDT relay output.