AND AD-1653, Инструкция по эксплуатации

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15
6.2. Measuring the Density of a Liquid
Use the following procedure to obtain the density of a liquid.
1. With the float hanging, press the RE-ZERO key
to set the displayed value to zero.
2. Pour the liquid of which you want to measure the
density into the beaker.
Note: Make sure that the float is about 10
mm below the surface of the liquid.
3. When the value displayed on the balance is
stable, record the value (A). At this time, ignore
the minus sign.
4. Substitute
the measured value in the following
equation to obtain the density of the liquid.
|
A |
ρ
=
+ d
V
ρ
:
Density of liquid (g/cm
3
)
A : Buoyancy of float (g)
V
:
Volume of float (g/cm
3
)
d : Density of air (g/cm
3
)
Example: If the measured value (A) is 9.9704 g, the volume of the float (V, printed on the float
hook) is 10.00 g/cm
3
, the density of air (d) is 0.001 g/cm
3
and the temperature indicated
by the thermometer is 25°C, then the density value is:
9.9704
+ 0.001 = 0.998 g/cm
3
(25°C)
10.00
Example display: BM