Laser optics accurately measure running shaft alignment

This paper discusses how laser-optic alignment systems can be employed effectively to detect and accurately measure rotary machinery shaft alignment while the machinery is running. These measurements can be used to maintain proper alignment at operating conditions. One of the many significant factors influencing machinery reliability in process plants is alignment accuracy. When driven process machines operate in misaligned condition with respect to their drivers, equipment bearings are exposed to additional loads. Vibration severity may increase, bearings will be more highly loaded, and equipment life expectancy will diminish as a result.