10 cpm phase AND unsteady, non rotational frequency vibration

[Tmoose]

Looks like we need to capture at least 2, and preferably at least 8 channels of simultaneous low frequency (600 cpm down to 10 cpm or so) "vibration" data.
Also, must process it for relative phase and amplitude (etc?) to determine if a mounting flange is yawing or pitching > 1/8 degree.

Any suggestions?

thanks,

Dan T

 

[MachineryWatch]

Hi Tmoose,

Are you dealing with a speed that varies from 600 down to 10 RPM and you need to know the phase relationships over the entire range? Or, is it a fixed speed machine and that is the frequency range of interest? If the latter is true do you have a single dominant frequency in that range? Are you really looking for phase resolution better than 1/8 of a degree between channels? I guess I really don't understand the scope of the project.

http://www.machinerywatch.com