Speed to Analog Signal Conditioners
ST420 Shaft Tachometer Sensor
The ST420 is an analog-output shaft speed sensor. It detects magnetic pulses from a rotating shaft-mounted magnetic pulser target (disc or wrap) and outputs a smooth continuous 4-20mA analog signal in direct proportion to the pulse frequency (rotating shaft speed). The ST420 combines a magnetic pulse detector, signal processing and 2-wire loop-powered 4-20mA circuitry into a stainless-steel M18x1 sensor housing.
* 2-wire loop-powered 4-20ma analog shaft speed sensor
* Accurate quartz crystal based digital processing
* No user calibration — works right out of the box
* Standard and custom measurement ranges available
* Intrinsically safe design
* Class II, Div 1 dust ignition-proof model available
* Works with shaft-mounted pulser targets (disc/wrap)
* Stainless Steel M18x1 housing, NEMA 4X/IP67
