CEMB USA N300 - Manual (Page 40)

6 - 6 Balancing function
Calibration procedure
Calibration, required in order to assess the unbalance of a rotating body, is generally a
procedure composed of various steps to be performed in sequence:
- Calibration for single-plane balancing:
1) first spin without test mass
2) second spin with test mass on the balancing plane
- Calibration for two-plane balancing with two sensors:
1) first spin without test mass
2) second spin with test mass only on the P1 balancing plane
3) third spin with test mass only on the P2 balancing plane
- Calibration for two-plane balancing with a single sensor:
1) first spin without test mass, with a sensor on plane P1
2) second spin without test mass, with a sensor on plane P2
3) third spin with test mass on plane P1, and a sensor on plane P1
4) fourth spin with test mass on plane P1, and a sensor on plane P2
5) fifth spin with test mass on plane P2, and a sensor on plane P1
6) sixth spin with test mass on plane P2, and a sensor on plane P2
The calibration page of the N300 instrument is laid out as illustrated here below:
1. channel that the measurement displayed refers to
2. status of the channel displayed:
= enabled
= disabled
3. type of sensor connected
4. calibration procedure steps
not yet completed
completed
The values displayed relate to the step selected (current), which is indicated by the
symbol
5. synchronous filter width (see 5 – 4 Synchronous filter width)
6. value, unit of measurement and type of synchronous vibration
7. synchronous vibration phase (from 0° to 359°)
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