Wheel balancer 80-2000T. Operation Manual
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8.4 Imbalance sensors: testing and calibration
The imbalance sensors calibration is fulfilled in case of incorrect measuring of weight
masses while standard wheels balancing, if standard wheel balancing can't be fulfilled during
one cycle.
Imbalance sensors’ testing is fulfilled by measuring accuracy of imbalance measuring.
8.4.1. Imbalance measurement accuracy check (simplified)
Accuracy check fulfill on the motor-car and truck-car wheels, in the corresponding modes.
For the checking it’s necessary to take the wheel with the conditioned (without damages
etc.) non-alloy rim (radial and face runout of the weights setting point - maximum 1,5 mm for
motor-car wheel and 2.5 g for truck-car wheel) and clip-on weight with the mass (60...100) of
1 g.) for motor-car wheel and (100...300) of
2 g. for truck-car wheel. It should be possible to
fasten clip-on weights on the edge of the wheel. Control weight should be weight preliminary.
While testing the imbalance use precise (unrounded) imbalance values, displayed in the
information filed or disable the rounding in advance (8.1.1).
Mount the wheel on the machine. Enter the wheel dimensions. Balance the wheel.
Fulfil adapter compensation according to 7.5 without removing the wheel. Fulfil the
regular measuring by pressing
START
- the
result should no exceed 2 g on each side for
motor car wheel and 4 g for truck car wheel. In other case it is necessary to repeat adapter
compensation procedure.
Fix the control weight in the right plane of the rim. Fulfill imbalance measuring, fix the
result
.
Move the weight to the left side, fulfill imbalance measuring, and fix the result.
Turn off adapter compensation according to 7.5.
Deviation from measured weight mass should not exceed 3 g+2% of control weight mass.
In other case:
fulfil gauge arm calibration (8.3.2);
fulfil imbalance sensors calibration;
repeat the check.
8.4.2 Imbalance sensors calibration (truck-car)
Imbalance sensors calibration should be performed according to the results of imbalance
measurement accuracy defining. It is recommended to fulfil gauge arm calibration first.
The calibration is fulfilled by 3 measurements: without weight, with weight on the right side,
with weight on the left side.
For the calibration it’s necessary to take the truck-car wheel with the conditioned (without
damages etc.) non-alloy rim (radial and face runout of the weights setting point - maximum 2,5
mm) and clip-on weight with the mass (100...300) of
1 g.). It should be possible to fasten clip-
on weights on the edge of the wheel.
Mount the wheel on the machine. Enter the wheel dimensions. Balance the wheel if the
machine accuracy allows doing it.
Being in «New wheel» state press the button
MENU
and choose the option
«Imbalance sensors calibration (truck)».
Follow the displayed instructions.
Remove the calibrating weight.
Fulfil imbalance measurement error testing according to 8.4.1.
