Seeking help with vibration testing of a device
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I received a concept diagram from a foreign client, which specifies that the vibration level should be 0.1 inches per second (ips), or 100 mils per second. An electric motor operating without a load will exhibit a vibration level of less than 0.1 inches per second. We need to ensure that we are referring to the same vibration values. Best regards. The equipment consists of a large motor that drives a spindle, and this spindle in turn drives an aluminum cylinder with a diameter of 1 meter. I need to test the above data, so I bought a SIM handheld electronic vibration meter that displays values in mm/s, mm, and m/s squared, as well as LO and HI. How should I carry out the measurements at different rotational speeds of 500, 700, 800, and 1000? Please advise
mm/s is the unit we generally use
But mm/s is the domestic standard, requiring me to use in/s
And the value I measured is 00.4 mm/s? ? ? ?
The last edit to this post was made by BoneBrother on 2015-12-13 at 14:54. The vibration level should be 0.1 inches/second (ips), or 100 mils/second. An electric motor running without a load will exhibit a vibration level of less than 0.1 inches/second. We need to ensure that we’re referring to the same vibration values. Best regards. The vibration level must be less than 0.1 inches/second (2.54 mm/s); the vibration level of the motor when it’s running without a load should also be less than 0.1 inches/second (2.54 mm/s). It’s important that both parties agree on the same vibration standards. Set your ordinary vibration meter to the mm/s scale – it doesn’t matter whether it’s set to Lo or High (it’s used for measuring acceleration). Measure the vibrations in the horizontal, vertical, and radial directions at both the motor and the driven device’s bearings; the maximum value should be less than 2.54 mm/s； It is necessary to confirm with the other party whether this speed value refers to the peak value or the RMS value. National standards and most guidelines use the RMS value; only a very small number of cases use the peak value. The magnitudes of the two are different, with the RMS value being smaller. Good luck.