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Chapter 5
Collecting and Reviewing Data
142
Collect a Spectrum Measurement
One of the most useful ways to display vibration signals is in a spectrum. The
spectrum displays the vibration signal level in relation to the frequencies at which
the vibration occurs.
To display a spectrum, the Dynamix 2500 data collector analyzes the frequency
components of the signal and breaks this analysis down to a number of frequency
bands where the signal level for that band is represented by a single value. These
bands are calstatus indicator lines.
A typical spectrum could have 400 lines although the data collector lets you to
select a smaller or larger number of lines. The higher the lines, the higher the
resolution, and the longer it takes the data collector to acquire the data for a
spectrum.
Lines of resolution, Fmax, and number of averages all affect the length of time it
takes to acquire and process a spectrum. You can control each of these setup items
either in your computer software for route measurements or on the User screen
for Offroute measurements.
See
Create and Collect a User-defined Point on page 152
information about Offroute measurements.
Once you have created a route in the Emonitor Software and uploaded it to the
data collector you can begin to take the measurement.
See the Emonitor User Manual publication,
information about creating routes and loading them into the data collector.
Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
for more
EMONTR-UM001
for
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