Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector - Manual (Page 62)

62 Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012
Chapter 2 Setting Up Measurements
Measurement Definition
Options These topics describe the available selections for setting up measurement
definitions in Emonitor. You determine these selections by choosing Tools > Set
Active Collectors in Emonitor.
Figure 7 - Set active collectors
In some cases, both Emonitor and Enpac 2500 support certain options. In other
cases, Emonitor can support an option that the Enpac 2500 cannot support. For
example, Emonitor can apply a software high pass filter to the data after it
unloads the data from the Enpac 2500. This allows you to use a filter that is not
available in the Enpac 2500.
Measurement Types
Emonitor and Enpac 2500 support the following measurement definition types:
• Magnitude - This measurement type is a single value representing the total
energy of a measurement. For example, a vibration magnitude represents
the total energy in a vibration spectrum. The Enpac 2500 can also collect
magnitude+phase measurements, for the first through the eighth orders.
• Numeric - Manual entry or DC voltage measurement of an overall value
such as temperature, pressure, flow rate, operating speed, or proximity
probe gap readings.
• Spectrum - Frequency domain measurement of frequency vs. amplitude,
usually for velocity or acceleration. The Enpac can collect phase with
spectrum measurement definitions.
• Time Waveform - Time domain measurement of time vs. amplitude,
usually for displacement, velocity, or acceleration.
Remember that the available measurement types in Emonitor depend on the
active collectors you select with the Tools > Set Active Collectors. If you have two
IMPORTANT If no data collectors are active, the selections that appear in the
Measurement Definition pane are the ones available to ALL data collectors.
If only the Enpac is active, then only the valid choices for the Enpac appear
in the lists. If the Enpac and other data collectors are active at the same
time, you see the selections that are common to all data collectors that are
active. Therefore, you may not see all the selections available for the Enpac.
The names of the active data
collectors appear in inverse text.