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in the display will indicate the actual thickness of the material directly beneath the transducer.
If the coupling status indicator does not appear, not stable, or the numbers on the display seem
erratic, firstly check to make sure that there is an adequate film of couplant beneath the transducer,
and that the transducer is seated flat against the material. If the condition persists, it may be
necessary to select a different transducer (size or frequency) for the material being measured.
While the transducer is in contact with the material that is being measured, the instrument will
perform four measurements every second, updating its display as it does so. When the transducer is
removed from the surface, the display will hold the last measurement made.
Note
：
Occasionally, a small film of couplant will be drawn out between the transducer and the surface
as the transducer is removed. When this happens, the gauge may perform a measurement through
this couplant film, resulting in a measurement that is larger or smaller than it should be. This
phenomenon is obvious when one thickness value is observed while the transducer is in place, and
another value is observed after the transducer is removed. In addition, measurements through very
thick paint or coatings may result in the paint or coating being measured rather than the actual
material intended. The responsibility for proper use of the instrument, and recognition of these types of
phenomenon, rests solely with the user of the instrument.
4.5 Scan mode
While the gauge excels at making single point measurements, it is sometimes desirable to
examine a larger region, searching for the thinnest point. The gauge includes a feature, called Scan
Mode, which allows it to do just that.
In normal operation, the gauge performs and displays four measurements every second, which is
quite adequate for single measurements. In Scan Mode, however, the gauge performs ten
measurements every second, and displays the readings while scanning. While the transducer is in
contact with the material being measured, the gauge is keeping track of the lowest measurement it
finds. The transducer may be “scrubbed” across a surface, and any brief interruptions in the signal will
be ignored. When the transducer loses contact with the surface for more than two seconds, the gauge
will display the smallest measurement it found. When the transducer is removed from the material
being scanned, the gauge will display the smallest measurement it found.
When the scan mode is turned off, the single point mode will be automatically turned on. Turn
on/off the scan mode by the following steps:
Press the
key to switch the scan measurement mode on and off. It will display the current
condition of the scan mode on the main screen.
4.6 Changing Resolution
MT160 has selectable display resolution, which is 0.1mm and 0.01mm. This function is not
available for MT150, which is fixed to 0.1mm.
Press down the
key while turning on the gauge will switch the resolution between “High” and
“Low”.
4.7 Changing Units
On the measurement mode, press the
key to switch back and forth between imperial and
metric units.
