Procedure
1.
From the Balance main menu, press ALT > F6 Calculator Mode > F11 Units Conv.
2. Enter the values and the units you want to convert.
Option Description
F2 Enter Mag. Enter the magnitude of the vibration units to convert. Enter a value
between 0.00 and 100,000. The default is 0.
F3 Select Mag. Units Enter the vibration units of the magnitude you entered for F2 Enter Mag.
You can display the units in g's, in/sec, mils, mm/sec, or microns. Use
g’s for English units, and use g’s (m) for metric units. The default is mils.
F4 Select Units Type Set the units for the entered frequency. You can use RMS, Peak, and
Peak-to-Peak.
F5 Enter Freq. Enter the frequency of the spectral feature with the magnitude to
convert. Enter a value between 0.01 and 100,000.
F6 Select Freq.
Units
Enter the frequency units of the frequency number you entered for F5
Enter Freq. Select Hertz (Hz) or CPM. The default is CPM.
F9 Select Units Type Specify the units of the calculated solution for acceleration. Select RMS,
Peak, or Peak-to-Peak. The default is RMS.
F10 Select Units
Type
Specify the units of the calculated solution for velocity. Select RMS,
Peak, or Peak-to-Peak. The default is Peak.
F11 Select Units
Type
Specify the units of the calculated solution for displacement. Select
RMS, Peak, or Peak-to-Peak. The default is Peak-to-Peak.
3. Press Enter.
The values for F9, F10, and F11 display the new values in acceleration, velocity, and
displacement.
4.
Press Back or F7 Select Calc. mode to exit and return to the Select Calculation screen.
10.16 Tips and additional information
10.16.1 Basics of balancing machinery
Unless you use the balancing procedure as a diagnostic tool, never attempt field balancing
until you determine the problem is rotor imbalance. Check the rotor resonance, bearing
support resonance, and other system resonances to understand the rotational frequency
in relation to these natural frequencies.
Note
As the operating speed approaches a resonance, amplification and phase shifts can make the
balance job difficult, if not impossible, to perform successfully. As a general rule, the operating
frequency should be 15 to 20 percent above or below these resonances.
Balance
MHM-97432 Rev 7 355
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