User Manual

User Manual DPM-816 PRO Page 22
Please note, if the calibration is done incorrectly on one of the
metal base types, the device will be unable to automatically detect
the type of substrate material and choose the suitable
measurement method.
The new device's six-point calibration is identical to the factory
calibration.
The device is calibrated at the factory using steel (magnetic
induction method of measurement) and aluminum (eddy current
measurement method) substrates.
Checking the car body
You can find repainted spots by taking measurements in places of
the car body that are more susceptible to damage. Every car is
painted in the factory in an automated fashion, and the paint
thickness is a relatively constant value. However, different car
manufacturers may have a slightly different paint thickness.
Usually the paint coating thickness is within the range of 60 -
200µm (2.5-8 mils). In a single car, the coating thickness variance
on different parts of the car should not exceed 20%.
If the measured thickness exceeds the average thickness in one
or more spots by twofold, it indicates a second layer of paint.
If the measured paint thickness exceeds the average thickness by
more than twofold, such a spot was treated with putty. The thicker
the paint thickness, the lower the quality of the repair job on the
car body.