testo 616 Bedienungsanleitung Seite 26

26 6. Measuring
Switching the instrument off and on again resets the
maximum and minimum values.
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Taking a a m m easurement:
The instrument is switched on and is in measurement
view.
Hold instrument horizontal to contact surface. Slowly
increase contact pressure to 1 to 3 kg until a stable
value is shown
In order to be able to evaluate a moisture course, several
measurements at different positions or at different times
are necessary.
In drying processes, the displayed measurement values
can in individual cases also be negative. This occurs as
a result of the material composition and the different
moisture gradients. When negative measurement values
are displayed, the drying process is nearly finished, i.e.,
the more negative the values, the drier the material.
For better assessment of the contact pressure, the
instrument can initially be pressed against a scale.
Keep r r eading, d d isplay m m aximum/minimum v v alue:
The current reading can be recorded. The maximum and
minimum values (since the instrument was last switched
on) can be displayed.
Press several times until the desired value is
displayed.
- The following are displayed in turn:
· Hold: The recorded reading
· Max: Maximum value
· Min: Minimum value
· Current reading
Resetting t t he m m aximum/minimum v v alues:
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