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Measuring Vibration Last Updated: 08/09/2017 |
Measuring vibration using modern vibration sensors is relatively inexpensive and easy to do! Knowing the vibration levels of rotating machinery and related accessories will allow you to make informed decisions as to the health of a machine and its components. Measuring vibration may be as simple as purchasing a vibration meter with a handheld accelerometer and then comparing the reading to the ISO-10816 vibration severity chart! The vibration meter will integrate the accelerometer signal to velocity in in/sec or mm/sec. Decisions can then be made as to whether the machine needs balancing, alignment or even bearing replacement. Vibration is transmitted from the rotating shaft of a machine through the bearings to the bearing caps. For this reason vibration measurement is usually done at the bearing caps. In most cases, especially with machines using Rolling Element Bearings, accelerometers or velocity sensors are preferred as all rotating shaft vibration energy is transmitted directly to the bearing cap. Machines with Journal Bearings may be better monitored using installed proximity probes connected to full time monitoring as not all vibration is transmitted to the bearing cap due to bearing damping.
1. Vibration Meter (Compare Readings to ISO-10816)
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