Ring method measurements page 55
Display Action Explanation
Immersing
automatic
Immerses the probe to the given
immersion depth.
Returns to the found surface
height.
Measuring
Displays the
measured value
automatic
Records the measured value:
The sample vessel containing the
liquid moves down until a
maximum force is registered. The
vessel is moved back upwards; the
value of the maximum force is now
determined exactly.
Relaxing
automatic
The liquid is moved upwards again
until the maximum force is reduced
by the percentage value given
under
Relaxation
.
The steps
Measuring
and
Relaxing
are repeated until all the
measurement has been
completed.
Finished
Displays the final
results:
Average (mN/m)
Standard
deviation (mN/m)
Temperature (°C)
automatic
The measurement is complete.
The data found are used to display
the mean value of the surface
tension, the standard deviation
and the temperature.
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