Fluctuations in instantaneous speed cause pulsating phenomena on rotating machines, known as torsional vibrations. They are present on alternating machines (diesel engines, pumps, compressors), propellers (wind turbines, fans), electrical machines (alternators, generators, motors) and their transmissions. They can lead to problems of fatigue, loss of power, noise and vibration.
The 152 series sensors in combination with the YO, SLIT YO and FFO fibre optic probes capture a large number of pulses per revolution and deliver a stable time reference as a function of speed to perform torsional vibration analysis in the time and frequency domain. In addition, OPTEL-TEXYS offers proprietary encoder test patterns with periodic black and white elements for optimal detection contrast.