Nova Eclipse TG950 - Users Manual
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4. OPERATION STEPS
4.1 Power On - Battery Check - Auto-Off
Momentarily depress the ON/OFF Touch Command. NDT Systems’ Logo
and contact information are displayed. After the system boots, the
Measurement Display automatically switches on. This display contains the
features shown in Section 3.1, above. If a probe is not connected when the
gage is powered ON, a highlight in the Measurement Display reads, NO
PROBE – Press Enter to Select Setup. This prompt serves as a reminder
to either attach the desired probe, or go to Select Setup to choose a saved
setup, or to modify default, automatic setups.
The Battery Level Indicator icon appears on the left side of the LCD display
indicating the current battery charge state. The NOVA TG950 comes with
two AA-size rechargeable NiMH batteries installed in its battery chamber. If
the Battery Level Indicator fails to register more than approximately 20%
full-scale after recharging, it is recommended that the batteries be replaced.
W hen power becomes marginal, the Power-Guard cutoff feature
automatically saves current parameters and turns the power off until the
batteries are charged or replaced. If the TG950 fails to respond to the initial
ON/OFF Command, the batteries should be replaced.
To turn the gage off at any time during operation, momentarily press and
briefly hold the ON/OFF button. Also, with a contact-type transducer in use,
the TG950 automatically turns off approximately 10 minutes after non-use.
In either case, all previous settings are retained in memory and will be
restored the next time it is powered up.
4.2 Probe Coupling
First, apply a small amount of couplant to a surface of the Reference
Standard selected. If necessary, refer back to
Section 2.4, Using
Couplants
.
Before placing the probe on the Reference Standard, note the
Coupling Icon on the upper-right side of the display.
W ith the probe uncoupled, the Probe
Coupling Icon appears as shown on the left,
with a space between the probe symbol and
the horizontal bar that represents the
surface of the test object. W hen the probe is
properly coupled, the Icon changes to that
Nova Eclipse TG950 - Users Manual
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shown on the right. In this state, the Coupling Icon indicates satisfactory
coupling, adequate material penetration, and proper probe/beam
normalization (perpendicularity to surface). Thickness readings should not
be considered reliable if the Coupling Indicator intermittently blinks, or
flickers.
4.3 Basic M enu-Selections and Controls
The numerous features that set the NOVA 950 apart from other Bench Top
thickness gages, and make it so easy to operate, are readily accessed
through intuitive Menus and Sub-Menus. Not all features will be used for
some applications. However, there are many unique User-selectable
features that can be accessed for difficult applications.
MAIN MENU
The Main Menu can be accessed at any time the
NOVA TG950 is powered on by pressing the
MENU Touch Command button. To exit any
Menu or Sub-Menu, press MENU, and the display
will revert to the last-displayed Menu, if in a Sub-
Menu, or to the Measurement display, if in the
Main Menu.
Main Menu Items are:
W hen the Main Menu is accessed, the first item,
DISPLAY
, is highlighted.
To scroll to the other items, use the Down and Up ARROW keys.
DISPLAY MENU:
Press MENU to display the
Main Menu. By default,
DISPLAY
is highlighted.
Press the ENTER key. There are four selections
listed:
Adjust Scale
,
Backlite
,
Contrast
, and
Units
. To select any of them, use the Down
ARROW key to sequentially highlight them.
Adjust Scale Sub-Menu (Scan Bar):
In the
DISPLAY Menu, with
Adjust Scale
highlighted,
press ENTER. The Measurement Display will
open, as shown:
