AND AD-1653, Инструкция по эксплуатации

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12
5.5. Measuring the Density of a Solid
The density of a solid is obtained by averaging the measured values.
1. Start the measurement when water temperature
becomes stable.
2. Press the RE-ZERO key to set the displayed
value to zero.
3. Place the sample on the upper pan and record
its weight in air (A).
4. Press the RE-ZERO key to set the displayed
value to zero.
5. Place the sample on the lower pan and record
its weight in water (B). At this time, ignore the
minus sign.
Note: Make sure that the sample is about 10
mm below the surface of the liquid.
6. Obtain the density of water according to the
temperature. (Refer to Table 1.)
Table 1 Density of distilled water (Unit: g/cm
3
)
At sea level (1 atmosphere), the density of water reaches maximum at 3.98°C.
Example display: BM
Temp. ( C)
0
10
20
30
40
50
60
70
80
90
+0
0.99984
0.99970
0.99820
0.99565
0.99222
0.98804
0.98320
0.97777
0.97180
0.96532
+1
0.99990
0.99961
0.99799
0.99534
0.99183
0.98758
0.98268
0.97720
0.97117
0.96465
+2
0.99994
0.99949
0.99777
0.99503
0.99144
0.98712
0.98216
0.97662
0.97054
0.96397
+3
0.99996
0.99938
0.99754
0.99470
0.99104
0.98665
0.98163
0.97603
0.96991
0.96328
+4
0.99997
0.99924
0.99730
0.99437
0.99063
0.98618
0.98110
0.97544
0.96927
0.96259
+5
0.99996
0.99910
0.99704
0.99403
0.99021
0.98570
0.98055
0.97485
0.96862
0.96190
+6
0.99994
0.99894
0.99678
0.99368
0.98979
0.98521
0.98001
0.97425
0.96797
0.96120
+7
0.99990
0.99877
0.99651
0.99333
0.98936
0.98471
0.97946
0.97364
0.96731
0.96050
+8
0.99985
0.99860
0.99623
0.99297
0.98893
0.98422
0.97890
0.97303
0.96665
0.95979
+9
0.99978
0.99841
0.99594
0.99259
0.98849
0.98371
0.97834
0.97242
0.96600
0.95906