TG110DL User’s Manual
10 |
P a g e
NDT Systems, Inc.
5542
Buckingham Drive
,
Huntington Beach, CA 92649
,
PH: 714-893-2438
ALARMS:
From the Menu screen, move the cursor down to ALARMS and press the
ENTER button to access the alarm settings.
There are four alarm modes, “Off”,
“Lo”, “Hi”, and “Lo/Hi”.
Three modes allows the user to set a range of acceptable
thicknesses. Once the measured thickness falls outside that range, a red LED
indicator located near the menu button will illuminate, warning the user that the
measured thickness met one of the alarm conditions.
“Off” prevents the alarm
from triggering. “Lo” triggers an alarm when the measured thick
ness falls below a set thickness
. “Hi” triggers an
alarm when the measured thickness rises abov
e a set thickness
. “Lo/Hi” triggers and alarm when the measured
thickness falls below a set thickness or rises above a se
t upper bound. The alarm thicknesses are set by moving the
cursor to either the LOW or HIGH menu item and then using the RIGHT or LEFT button to scroll to the appropriate
thickness value. The alarm mode is also interactive with the Min. Hold mode, as well as the data logger discussed
below.
THICKNESS MODE:
From the Menu screen, move the cursor down to THICKNESS
MODE and press the ENTER key to access the various measurement modes.
Normal:
In Normal thickness mode, the main display screen will present only the
current thickness value being measured. The Scan Bar will also relate to the
measured thickness. Normal is the default setting.
Differential:
The Differential thickness mode displays the difference between the measured thickness and a user
defined thickness value. To define a thickness value, use the UP and DOWN arrow buttons to adjust the small
number below the primary thickness reading and press the ENTER button. The primary thickness will now display a
reading in inches that is greater or less than the user defined thickness value. A quick way to set the defined
thickness value while in Differential thickness mode is to set the probe on a test block of the desired value and
then press the ENTER key. The nominal value will then be set to the thickness of the test block.
NOTE: The gauge must be calibrated to the test material prior to using the Differential Thickness Mode to ensure
correct readings.
Min. Hold:
While in this mode the user can scrub across the surface of a part and the gauge will capture and
display the minimum thickness measured during that scrubbing. Press the ENTER key to clear the value and start a
new scrub.
Through-Paint (Option):
This mode allows the user to measure the thickness of a test material through an applied
coating. This thickness mode is available as an optional software extra. To check if a gauge is loaded with this
software, refer to the software version number at the top left of the power on splash screen. A gauge with
Through-
Paint capability will have a “P” at the end of the version number (e.g. “v1.56P”).
A Through-Paint capable
probe is required in to use this mode, as the coating can interfere with a standard prob
e’s ability to transmit sound
into the test material. The NDT Systems TG-560P Through-Paint transducer is available separately or bundled with
the TG-110DL (Order TG-110 PKG 560P).
NOTE: When using a Through-Paint transducer, it is not necessary to zero the probe.
