Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector - Manual (Page 80)

80 Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012
Chapter 2 Setting Up Measurements
• Set up a Collection Specification with Transducer set to the AC
displacement and Signal detection set to Peak-peak.
• Finish setting up the dynamic proximity probe measurement by setting
Data Type to Magnitude and Units to mils or um. You can use a Filter if
desired.
Static (DC) component or gap
•
Set up a displacement transducer in the Transducer Calibration dialog
with Input type set to ‘DC Coupled’ and Units set to mils or um. Make
sure you enter the Calibration value that converts the voltage to a
displacement. If you are using the DC Input Module to remove the AC
component and attenuate the signal be a factor of 2.5, then you must
divide your transducers calibration by 2.5.
• Set up a Collection Specification with Transducer set to the DC
displacement and Signal detection set to ‘RMS.’
• Finish setting up the dynamic proximity probe measurement by setting
Data Type to ‘Magnitude and Units to mils or um.’ You must set the
Filter to ‘None’ since any type of high pass filtering removes the DC
component.
Typical Magnitude Measurement Definitions
This figure shows the setup for a typical magnitude measurement definition
Figure 13 - Magnitude Measurement Definition
This table shows the STD (Hz) 2000 collection specification.
This table shows the transducer specification in the STD (Hz) 2000 collection
specification.
This figure shows the setup for a typical set of measurement definitions with
multiple frequency bands. Note that the filter specifications used in the tables are
not currently defined in the Emonitor database. To define a new filter
specification, choose Setup > Band Filters and click New.
Table 17 - Collection Specification for Magnitude Measurement Definition
Transducer Window Signal Detection Fmax Lines Phase Order Norm? Averages
Accelerometer Hanning Peak 2 kHz 400 No No 4 linear
Table 18 - Transducer Specification in STD (Hz) 2000 Collection Specification
Name Base Unit Input Type Units Calibration Value DC Offset
Accelerometer acceleration ICP Accel g 100 0