Baker Hughes 022-508-909, Руководство по эксплуатации

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4-38 CL 5
Step 2: Press or to select the VIEW MODE
parameter
Step 3: Press to activate this parameter
Step 4: Scroll through the available modes by pressin
or . Press to select the displayed mode
(described below).
Base model instruments offer four display modes.
In addition, two more display modes are available
depending on the installed options. Display modes
include:
NORMAL
(Thickness Only) – The thickness value
appears as large digits in the center of the display. No
live A-Scan is displayed but an A-Scan snapshot of
the triggering echo can be accessed (Section 4.2).
MIN SCAN
(Minimum Thickness Scan) – Allows the
user to continuously evaluate material thickness (pro-
vided the probe remains coupled or is uncoupled only
briefly) then, when the evaluation period is complete,
the minimum material thickness is displayed. During
the evaluation period, thickness is displayed along
with the minimum and maximum observed thickness
values (and the calculated difference between the
two). The display also includes a time-out bar, which
begins to fill as soon as the probe is uncoupled. Re-
coupling the probe before the time-out period expires
allows the user to continue with the same evaluation
period. When the evaluation period is complete (after
the probe is uncoupled and the time-out bar fills), the
minimum thickness observed during the evaluation
period is displayed. Its corresponding A-Scan can also
be displayed by pressing . At this point the screen
is frozen. Recouple the probe to reactivate the display
screen (Section 4.3).
MAX SCAN
(Maximum Thickness Scan) – Allows the
user to continuously evaluate material thickness (pro-
vided the probe remains coupled or is uncoupled only
briefly) then, when the evaluation period is complete,
the maximum material thickness is displayed. During
the evaluation period, thickness is displayed along
with the minimum and maximum observed thickness
values (and the calculated difference between the
two). The display also includes a time-out bar, which
begins to fill as soon as the probe is uncoupled. Re-
coupling the probe before the time-out period expires
allows the user to continue with the same evaluation
period. When the evaluation period is complete (after
the probe is uncoupled and the time-out bar fills), the
Measuring Thickness
Selecting the Displayed View