VIBROTEST 60
Field Balancing
_________________________________________________________________________________
© VTEST60E July 2013 V4.46ff
C102 853.002
Page 105 of 168
2-plane balancing with prognosis
With this procedure the correction weight for correction
plane A is calculated after the initial unbalance run and
test run A. The residual vibration at measuring plane 1
and measuring plane 2 are prognosed by the
VIBROTEST 60.
If the prognosed residual vibration is acceptable test
run B can be skipped.
If the prognosed residual vibration is not acceptable the
balancing procedure can be continued with test run B.
Note
For all balancing procedures at two planes, two
vibration sensors are required. This means that
measurement must always be simultaneously done
with two sensors.
Unbalance correction types
Unbalance correction with VIBROTEST 60 can be done in one
of three ways.
•
Polar correction
With polar correction the location for the correction weight is
freely selectable.
•
Component correction
With component correction up to a max. of 99 fixed
locations can be selected (e.g. fan blades, equidistant holes
at the rotor circumference). The test weights are attached at
a fixed location for the test runs. VIBROTEST 60 calculates
the correction weights for two fixed locations per plane.
•
Unit mass correction
With unit mass correction the weights are pre-defined. The
unit mass is attached at any arbitrary location for the test
run. The VIBROTEST 60 calculates the required locations
for the identical unit masses.
A
B
1
2
