Mechanical vibration. Measurement and evaluation of machine vibration. Part 2. Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min
State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring the radiant flux, irradiance, spectral irradiance and exposure in spectral range from 0,0004 to 0,400 mcm
