AND HR Series Gebrauchsanweisung - Seite 14

Blättern Sie online oder laden Sie pdf Gebrauchsanweisung für Skalen AND HR Series herunter. AND HR Series 20 Seiten. Density determination kit applicable analytical balance models bm/gh/hr-i/gr/hr/ha series

Seite drucken

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.)
Temp. ( C)
+0
0
0.99984
10
0.99970
20
0.99820
30
0.99565
40
0.99222
50
0.98804
60
0.98320
70
0.97777
80
0.97180
90
0.96532
At sea level (1 atmosphere), the density of water reaches maximum at 3.98°C.
Table 1 Density of distilled water (Unit: g/cm
+2
+3
+1
0.99994
0.99996
0.99990
0.99949
0.99938
0.99961
0.99799
0.99777
0.99754
0.99534
0.99503
0.99470
0.99183
0.99144
0.99104
0.98758
0.98712
0.98665
0.98268
0.98216
0.98163
0.97720
0.97662
0.97603
0.97117
0.97054
0.96991
0.96465
0.96397
0.96328
+5
+4
+6
0.99996
0.99997
0.99994
0.99924
0.99910
0.99894
0.99704
0.99730
0.99678
0.99403
0.99437
0.99368
0.99021
0.99063
0.98979
0.98570
0.98618
0.98521
0.98055
0.98110
0.98001
0.97485
0.97544
0.97425
0.96862
0.96927
0.96797
0.96190
0.96259
0.96120
12
Example display: BM
3
)
+7
+8
+9
0.99990
0.99985
0.99978
0.99877
0.99860
0.99841
0.99651
0.99623
0.99594
0.99333
0.99297
0.99259
0.98936
0.98893
0.98849
0.98471
0.98422
0.98371
0.97946
0.97890
0.97834
0.97364
0.97303
0.97242
0.96731
0.96665
0.96600
0.96050
0.95979
0.95906