we are measuring vibrations on steam turbine on bearing 1 and bearing 3 . we found that amplitude of bearing 1 is slightly changing but at a same phase angle which is 262 degree . Also the amplitude of bearing 2 is slightly changing but at same phase angle which is 162 degree . I understand that the two waves of two bearings are opposite in phase but my question is what is the phase angle 262 and 162 means in a simple sin wave curve or how it is measured or determined ? and what does is indicats ?
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