Our plant uses the ENPAC 2500 and Emonitor software for vibration analysis. We are in the infancy stage with our program.

I am hoping that soembody can point me to advise on the parameters to use when setting up the collection specifications such as frequencies, windows, lines of resolution, averaging, etc. I currently copy equipment setups from our other divisions but am not sure why the collection specifications such as 360k 1600l is used.

Ant information or diection would be greatly appreciated.

Thanks

G,day Derek.

what is the speed and type of equipment you intend to monitor? A good all rounder for 1000-3000rpm equipment is 2000Hz Fmax with 3200 lines.
the ap set you mentioned (I assume 360k is cpm?)wouldnt be suitable for equipment running at or less than 250rpm as the data collection period would be over before the shaft had completed a full revolution. 1 Average is all i ever use. Data acquisition time = lines of resolution/Fmax in Hz. hope this helps

Jonesy:

Most of our equipment runs at over 1000 rpm. We do have some slow speed equipment such as compactors that have an output speed of 16 rpm. I have not recieved any training in this field so I am never sure how I shouldset up a collection. Thanks for your help.

A "general" setting would be Fmax 50-60X the running speed of the machine/point that your collecting data on and at least 1600 lines of resolution and 4 averages.

For roller bearings, I usually set the fmax to collect 5 times the BPFI. This way, I will get at least 5 peaks of an inner race defect.
On electric motors, I take at least one point with an fmax of 3000HZ, this will allow you to pick up electrical faults.
4 averages is good. The more lines of resolution, the clearer your picture and the more detailed you can break down the data, so I use 1600 line on all points except the 3000hz points on the motor, I use 3200 line for that one.
If you can't set up for individual points, then Xracers "general" settings are very good.
The higher the FMAX, the more it will bunch up the data at the lower end of the spectrum. When you "spread or expand" it out, so you can see better detail, this is where your lines of resolution will be very helpful.
For roller bearings, analyze these points in orders and velocity.
These are just my settings and opinions, but they seem to serve me well.
Thanks for letting me play, Ron