Vibration characteristics to establish a baseline signature or to check the mechanical condition of machinery are measured under which of the following operative conditions?
• Baseline vibration signature and why it’s taken • Effect of operating conditions (load/torque, RPM) on vibration readings • Difference between normal vs abnormal operating conditions when testing machinery
• When you want to compare future vibration readings, what kind of operating state do you want the machine to be in so those readings are repeatable and meaningful? • How would measuring under unusual or stressed conditions affect your ability to tell whether a later change is due to damage or just different operating conditions? • Think about the torque/load condition that best represents how the equipment actually runs most of the time.
• Make sure you know what baseline signature means (a reference pattern taken for comparison later). • Decide whether you want the machine under typical/steady conditions or unusual/extreme conditions for a baseline. • Check which option best matches the condition under which the equipment will operate for most of its service life.
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