PVX-B
Precision Visual Thickness Gauge
41
display up into 5 segments, or quadrants. The measurement labels correspond to
the measurement at each hash mark.
G)
Scan Bar –
The scan bar corresponds directly with thickness represented by the
horizontal labels on the on the display. As you can see from the diagram above,
the filled horizontal bar is displayed at .500”. This display can be very useful
when scanning materials in either B-Scan or Digits display views. It is much
easier to watch and notice deflections from flaws and general changes in
thickness using the scan bar, rather than trying to notice changes in the digital
value. If the user is scanning a material, for instance, and passes over a flaw
during the process, the scan bar will quickly deflect and alarm the user to go back
and search for the defect.
H)
Hot Menus
- Each of the fields located under the display are called the
Hot Menu
Fields
. These fields allow quick control of some of the fine adjustments needed
to control the display settings, measurement modes, and grid memory control.
All of these fields can be adjusted without having to activate the tabbed menu
items and searching through a variety of menus to make adjustments.
B-Scan View
B-Scan
The B-Scan displays a time based cross section view of test material. This view is
commonly used to display the contour of the blind, or underside, surface of the
material being tested. It is very similar to a fish finder. If a flaw is located during a
scan, the B-Scan will draw the flaw on the screen. The solid black rectangle in the
diagram at location E represents the cross section, or side view of the material. You
will notice that the overall thickness of the material is .500”, and the display range is
0.00” to 1.00” respectively. The B-Scan view draws at a rate of 15 seconds per
screen from right to left. Also notice at location J, the contour thickness changes of
the bottom surface of the material.
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