Ultraflux UF 801-P, Руководство пользователя

Страница: 44 / 98

NT228B GB2 44 / 98
9.1 When and How Use this menu ?
ECHO
DISPLAY
This menu function permits you to
check your ultrasonic measurement
conditions and know if they are
good, acceptable, weak or
impossible.
The parameter Q. max= permits to adjust the Delta T display sensitivity
depending your application. The display does not show the exact Delta T: It is
limited to ¼ of the ultrasonic signal period. From Q. max setting, you can force
more or less a Delta T display for any small or large actual Delta T.
There are two graphic displays (4 if a dual chord / pipe version):
The first one shows, from the left to
the right side, all energised signals
(ultrasonic, but also noises) that UF
801-P is receiving and must filter and
treat.
The two dotted vertical lines are
showing the selection window that
result from actual settings (Diam. Or
L and also C)
Any signal out from this window will
be ignored. The beginning must be
clean.
The second screen is an expanded
view inside above window that results
from the digital acquisition in a
tracking window, our electronic lens
for ultrasonics.
This screen shows two dotted lines
when all is OK.
- The vertical one shows triggered
transit time measurement, usually at
zero crossing.
- The horizontal one shows the
automatic threshold result with the
selected edge on the signal.