Emerson Machinery Health Expert CSI 2600, User Manual

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Appendix C
Data types
Topics covered in this appendix:
• Gross Scan analysis
• Spectral analysis
• Time Waveform analysis
• Non-Vibration unit analysis types
• Set DC offset
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
Gross Scan units conversion Table C-1:
Input
Type
Input Unit HW Int. RMS/DC Meas. Unit Disp. Unit
DC V / E.U. no no DC E.U.
AC V / E.U. no yes RMS E.U.
ACCEL V / 32.2 ft/s
V / 32.2 ft/s
V / 9.81 m/s
V / 9.81 m/s no
yes
no
yes yes
yes
yes
yes RMS
RMS
RMS
RMS g
in./s
g
mm/s
Data types
MHM-97453, Rev 1 87