First Page Of The Setup Menu; Measuring Speed; Immersion Speed - kruss K11 MK3 User Manual

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10.1

First page of the setup menu

The speeds for the various movement steps in the measuring procedure are set on this
page. In principle, the values pre-set by KRÜSS can be retained in most cases. All
speeds should be reduced when a very viscous or viscoelastic liquid is involved. If you
expect very small values when measuring interfacial tension then you should also
reduce the speeds in order to avoid mixing the phases as a result of too violent
movement. Information about setting the values for the particular measuring methods
is given in the corresponding sections for the measuring methods (ch. 飈 for the plate
method, ch. ! for the ring method and ch. 9.1 for density determination).
10.1.1

measuring speed

This parameter is relevant for surface and interfacial tension measurements by the ring
method. The speed at which the ring moves to determine the maximum force (used in
calculating the surface tension) is defined here. You should not increase the default
measuring speed of 3mm/min by very much, because as the speed increases the
determination of the maximum force becomes more inaccurate. Values between 0.2
and 100 mm/min can be entered.
10.1.2

Immersion speed

Here you define the speed at which the probe is immersed in the liquid after a surface
or interface has been found. Immersion is used to improve the wetting of the probe
before the measurement.
With very viscous or viscoelastic liquids the speed should be reduced as otherwise the
probe could be pressed against the balance. In extreme cases this could terminate the
measurement if the overload protection of the balance is activated.
immersion speed
The
the liquid during a density determination.
In the ring method
the light phase from the start and is therefore not immersed. This is why the immersion
speed is irrelevant in this measuring mode.
Basic settings (setup menu and special functions)
also sets the speed at which the density probe is immersed in
Interfacial tension – push
the ring is completely surrounded by