Rotational speed sensor ST420

magneticstainless steelanalog output

Features • 2-wire, loop-powered 4-20 mA analog output • No user calibration: works right out of the box • Works with shaft-mounted pulser targets (disc/wrap) • Rugged stainless steel M18x1 housing • Reverse-wiring protected • UL listed, Intrinsically Safe (IS) • Class I, Div I (C, D) Class II, Div I (E, F, G) when used with an IS barrier. The patented ST420 detects passing magnets of a shaft-mounted pulser disc or wrap and outputs a smooth, continuous 4-20 mA analog signal in direct proportion to shaft rotation speed. Custom speed and pulser disc/wrap PPR ST420 models are available upon request. Optional EZ-18mm Easy Sensor Mount (see EZ-18mm page for more details) • Mounts directly to the tapped shaft • Can be used with optional Mounting Magnet if shaft is not tapped • Pulser disc is included with Optional EZ-18mm • EZ-18mm is for Series 18, ST420 Series, and SpeedTalker Sensors