DeFelsko PosiTector 200 Gebrauchsanweisung Seite 11

models only), the loudest echoes are reported as individual layer
thicknesses.
In some applications, surface roughness and/or coating layers with
significant density differences near the surface can result in a
louder ultrasonic echo than the one from the coating-substrate
interface, resulting in a lower than expected reading. While the Lo
Range (pg. 5) can be adjusted to ignore these loud, unwanted
echoes, this sometimes requires that the range be adjusted too
close to the expected coating thickness for reliable measurement.
When Max Thick Mode is selected, the PosiTector 200 reports
the echo or peak associated with the deepest interface in the
coating system, instead of the loudest. This is often more effective
at reporting the total coating thickness above the substrate
interface, and eliminates the need to adjust the Lo Range (pg. 5).
Since there will inevitably be some small echoes from within the
substrate, only echoes above a pre-set loudness threshold will be
reported. On Advanced models, this threshold can be adjusted
from within Graphics Mode (pg. 8). When multiple layers are
selected (Advanced models only), the layer thicknesses
associated with the deepest ultrasonic echoes are reported.
NOTE:
Max Thick Mode is not recommended for thin metal
substrates less than 2.54 mm (100 mils) thick, or substrates such
as composites and fiberglass.
Sound
Adjusts the volume of built-in speaker (Off, Low, Medium, High).
Flip Lock
Disables the Auto Rotate feature by locking the display in its
current orientation.
Touch
Allows the touch screen functionality to be disabled. All gage
functions can also be controlled using the navigation buttons.
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