Air gap sensors measure the distance between rotor and stator in generators, gearless mill drives, wind turbines and large electric motors. The sensors consist of a sensor, a connecting cable and a remote measuring amplifier. As an output signal, the sensors provide a voltage or current signal proportional to the air gap in “mm”. AVIBIA supplies air gap sensors with a measuring range between 2 – 65 mm air gap. The measuring principle is based on the capacitive effect. Air gap sensors are glued to the stator sheet metal package.

Large detection range from 2mm to 65mm (depending on sensor type)
Removable sensor via ø5mm coaxial connector for guiding through ventilation holes
DSP-based linearization for higher accuracy and stability
Active temperature compensation for better stability
Resistant to strong magnetic fields
Voltage output for minimum distance measurement