Operation
How to Measure Vibration
4
4-29
How to Measure Vibration
Best practice is to take vibration measurements when the
machine is running in a steady state and at normal
operating temperature. It is recommended to take two
measurements from each component in the drive train if
the motor has more than 40 HP (29.8 kW) and is longer
than 40 inches (101.6 centimeters). For motors with less
than 40 HP (29.8 kW) and 40 inches (101.6 centimeters)
length, one measurement is sufficient. For optimum
diagnostic quality, measure at each bearing location
whenever possible.
Multiple measurements will improve the diagnostic
quality. You need to test all the components, but not
necessarily all the possible Sensor locations on each
component. Vibration transmits easily through a machine
and it will be picked up from each location.
To measure machine vibration with the Tester:
1. Push . The Measure screen displays to
show the saved Machine Setups ready for
measurement.
2. Use the Dial to select the required Machine
Setup.
3. Push Enter to select the saved Machine Setup.
gbk51.bmp
If the drive train includes a VFD or dc motor, you
need to verify RPM in the next screen. If not, the
Tester automatically detects and configures the
settings for the Sensor.
4. Push Continue. The RPM Entry screen appears
for dc motors and machines with variable
frequency drives. You can retake the RPM
measurement if necessary or push Skip.
The Tester configures the settings and detects
the Sensor.
To Next Page
Loading...
