Capacitive air gap sensors from Sensonics
Building on Sensonics’ established range of vibration and positional sensors for rotating machinery, the latest air gap sensor range for use in high magnetic field applications offers a range of measurement options in combination with excellent stability and noise performance. Designed for use on hydro turbine generators and large electric motors the sensor provides a rotor to stator air gap measurement which can be used to monitor both the eccentricity of the rotor relative to the stator and individual pole to stator air gaps.
The CS air gap sensors are a non-contact dynamic position transducer utilising a capacitive technique to provide an accurate displacement measurement from the sensor face to a metal target. The advantage of the capacitive technique in generator applications is the high immunity to magnetic fields.
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