Analog Variable Reluctance Speed Sensors

Analog Variable Reluctance (VR) Speed Sensors are passive sensors and do not require any external power source. The sensor generates a sinusoidal output voltage proportional to target speed and air gap. Target speed range for use with analog VR sensors ranges from 20 inches per second (IPS) to several hundred IPS. The output voltage, depending on the air gap and the target surface speed, ranges from a few millivolts at the slowest target surface speed to several volts at the highest target speed as depicted graphically on the catalog data sheets.