VIBRATION MONITORING AND ANALYSIS OF MECHANICAL SYSTEMS.

Vibration monitoring and analysis can be a useful part of a preventive or predictive maintenance program.There are a variety of vibration monitoring systems available.Some use permanently mounted sensors to continually monitor vibration levels,while other systems require readings to be taken periodically with handheld sensors.The type of system used depends on the equipment being monitored.The maintenance supervisor should compare the potential benefits of a vibration monitoring system,such as preventing damage and reducing outages,to the overall cost before deciding which system to use or whether to use any system at all.

PROXIMITY PROBE SYSTEMS.
A proximity probe is a non contacting type sensor which provides a direct current voltage directly proportional to shaft position relative to the probe.In a hydroelectic power plant or a large pumping plant,proximity probes are used to measure the main shaft runout on the turbine/generator or pump/motor
ACCELEROMETER SYSTEMS.
There is a number of accelerometer based vibration monitoring systems available,varying greatly in complexity and capability.Accelerometers are lightweight vibration sensors that,as the name implies,provide an electrical output proportional to the acceleration of the vibration of the machine being checked.