Emerson Vilter Vission 20/20 Operation And Service Manual page 267

Appendix B • Vission 20/20 Application Procedures
Step 4: Calibrate Instruments (2 of 2)
Now that calibrating Aux 1 is complete, continue to cali-
brate Aux 2.
To set up Aux 2, in the Device Calibration window, se-
lect "Other" from the drop-down menu and enter the
desired unit, in this case, "PV g".
"PV g" is "PeakVue® g". This unit is in no relation
to g as in g-force. This unit is used to describe the
frequency of stress waves caused by defects in the
moving component. So a high PV g value, indicates
a major defect in the component (i.e. a crack in the
race of a roller bearing).
Figure B-38. Vibration Monitoring - Step 4 (Instrument Calibration, Page 4)
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
NOTE
Then add in the Min and Max values, in this case,
"0.0 PV g" and "50.0 PV g", respectively. Since the
Range for the device (Vibration Transmitter) is 4-20 mA,
"0.0 PV g" will correspond to 4 mA and "50.0 PV g" will
correspond to 20 mA. No further set up is required, oth-
er than what has been explained.
B - 49