Appendix C Data Types; Gross Scan Analysis - Emerson Machinery Health Expert CSI 2600 User Manual

Appendix C
Data types
Topics covered in this appendix:
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C.1

Gross Scan analysis

Includes Overall RMS Level, Sensor DC Bias, Gap, DC, or AC Process signals.
Note
Some DC Process Inputs could provide pk, pk-pk, or other Measurement Units.
Gross Scan parameters
All Gross Scan inputs must be DC in nature. Any Gross Scan input of a dynamic nature must
be fed through the RMS/DC converter path. It is not technically valid to convert RMS values
from an RMS/DC converter to pk or pk-pk Measurement Units unless the input is sinusoidal
in nature. However, the CSI 2600 allows this. RMS values are multiplied by 1.414 or 2.828
to convert from RMS to pk and pk-pk, respectively.
C.1.1 Gross Scan units conversion
Table C-1:
Input
Type
DC
AC
ACCEL
MHM-97453, Rev 1
Gross Scan analysis
Spectral analysis
Time Waveform analysis
Non-Vibration unit analysis types
Set DC offset
Gross Scan units conversion
Input Unit
V / E.U.
V / E.U.
V / 32.2 ft/s
V / 32.2 ft/s
V / 9.81 m/s
V / 9.81 m/s
HW Int. RMS/DC
no no
no yes
no yes
yes yes
no yes
yes yes
Data types
Meas. Unit Disp. Unit
DC E.U.
RMS E.U.
RMS g
RMS in./s
RMS g
RMS mm/s
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