Honeywell 3025

SENSOR, HIGH OUTPUT, 275 TO 330 COIL RES., 24 IN LEADS, 24 AWG TERM., 0.8 IN THR

VRS SPEED SENSOR 55V 275 OHM TO 330 OHM; VRS SPEED SENSOR 55V 275 OHM TO 330 OHM 0.38 ms; Speed Sensor Type:VRS General Purpose; Output Voltage (Peak to Peak):55V p-p; Housing Diameter:9.525mm; Coil Resistance Min:275ohm; Coil Resistance Max:330ohm; Surface Speed:0.38m/s

High Output VRS sensors are designed for use in applications where higher output voltages are needed. They perform best at low to medium speeds with medium to high impedance loads. Front-End Sealed versions are available for use where the sensor is exposed to fluids, lubricants or adverse environmental conditions. Passive VRS (Variable Reluctance Speed) Magnetic Speed sensors are simple, rugged devices that do not require an external voltage source for operation. A permanent magnet in the sensor establishes a fixed magnetic field. The approach and passing of a ferrous metal target near the sensor’s pole piece (sensing area) changes the flux lines of the magnetic field, dynamically changing its strength. This change in magnetic field strength induces a current into a coil winding which is attached to the output terminals. The output signal of a VRS sensor is an ac voltage that varies in amplitude and wave frequency as the speed of the monitored device changes, and is usually expressed in peak to peak voltage (Vp-p). One complete waveform (cycle) occurs as each target passes the sensor’s pole piece. If a standard gear were used as a target, this output signal would resemble a sine wave if viewed on an oscilloscope. Honeywell also offers VRS sensors for general purpose, power output, high resolution, high temperature, and hazardous location applications, as well as low-cost molded versions.