ST420

4-20 mA Shaft Speed Sensors

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)

EZ-18mm Easy Mounting for Speed SensorsFeatures
• 
Mounts directly to the tapped shaft
•  Can be used with optional Mounting Magnet  if shaft is not tapped
•  Pulser disc is included
•  EZ-18mm is for Series 18, ST420 Series, and  SpeedTalker Sensors

Configure Your Product to Request a Quote

Select an ST420 Speed Sensor Model

Select Pulse Generator Type for Complete System

Option: Easy Mounting Bracket for Speed Sensors

Option: Easy Mounting Magnet (Must be Used with Easy Mounting Bracket)

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