CEMB USA N500 - Manual (Page 51)

Balancer mode 7 - 9
Test weight
Calibration requires the use of a test weight, to be applied in succession on the various
correction planes. These two parameters should be preset, with the appropriate
functions
and by typing the appropriate values with the numeric
keypad, and confirming with .
To cover the various operational requirements when balancing on two planes, it is
possible to specify a different test weight (value and angular position) on plane 1 and on
plane 2.
N.B.
The value of the test weight should be indicated in general units U. The operator
can decide independently to make these U correspond to the physical units
preferred by him, bearing in mind that also the unbalance and necessary
correction will be indicated in the same units U.
Caution :
Correct choice has been made of the test weight if it produces, in each of the spins,
a sufficient variation in the vibration compared to that of the initial spin.
This may be considered satisfactory if we have at least one from the following:
- variation in module of at least 30%
- variation in phase of at least 30°