Precisa Series XT, Руководство по эксплуатации

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14 Further information
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14.3.1 Density determination “Solid on bottom mode”
A temperature-controlled reference-liquid (water) is poured into a
bowl, placed on the scale pan and tared.
The solid is then placed into the liquid and weighed. Subsequently, the
solid is suspended so that it is still completely immersed in the water,
but no longer touches the base. It is weighed again.
From the weights, the balance determines the density of the solid.
14.3.2 Density determination “Solid in air mode”
With this weighing method, the solid is weighed with the aid of under-
floor weighing (see Chapter 3.10 “Under-floor weighing”).
The solid is then placed in the temperature-controlled reference liquid
(water) so that it does not touch the base of the bowl, but is neverthe-
less fully immersed in the water. Weighing is again carried out.
From the weights, the balance determines the density of the solid.
14.3.3 Density determination “Liquid mode”
The density of a liquid is determined using this method of weighing.
The procedure is exactly the same as with the density determination
by the “Solid in air” method. A glass object with a volume of 10 cm
3
or 100 cm
3
is used as the solid (available as accessories, see
Chapter 13 “Accessories”).
14.3.4 Density determination “Solid porous mode”
The density of a porous solid is determined with this method of weig-
hing.
In order to carry out such measurements, you will require the Density
Determination Kit (see Chapter 13 “Accessories”). The instruction
manual supplied with this kit describes the procedure for the density-
measurement.