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6. Measuring The Density Of A Liquid
Assemble the kit as described in the procedure below.
6-1.
Assembling The Kit:
1. For the procedure up to setting the beaker stand, refer to
Step 1 to Step 3 in "5-1. Assembling The Kit ".
2. Attach the thermometer clamp to the beaker and insert
the thermometer into the thermometer clamp.
3. Place the beaker on the beaker stand.
4. Connect the float to the float hook using the wire.
The length of wire must be approx. 30 mm.
5. Hook the float hook on the density pan stand.
6. When the value displayed on the balance is stable, press
the RE-ZERO key to set the displayed value to zero.
Now the balance is ready for density measurement.
6-2.
Measuring The Density Of A Liquid
Use the following procedure to obtain the density of a liquid.
1. With the float hanging, record the value. This is the
weight of the float in air for value A. 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.
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 absolute value ignoring the
minus sign as the weight of the float in liquid for
value A.
4. Use the following equations to obtain the density
of the liquid.
| A |
ρ
=
+d
V
ρ
: Density of liquid (g/cm
: | Weight of float in air - Weight of float in liquid | (g)
A
V
: Volume of float (cm
d
:
Density of air (approx. 0.001 g/cm
Step 4.
Step 5.
Example of the assembled GX-A series
key
Step 1.
Ex.: Display of GX-A
Step 3.
Value A
3
)
3
)
3
)
9
The volume of the float is printed.
3
Ex:10.00 cm
Approx.
30 mm
Temperature
Float in air
Step 2.
Approx. 10 mm
under liquid surface
Float in liquid
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