User manual

5.2 Determine volume of the glass sinker
If the volume of the glass sinker is unknown, it must be determined and calculated as
follows.
Ö Fill water into the container and heat it until the temperature is constant. Read
temperature on the thermometer.
Ö If necessary, press the UNIT/ button until the gram display appears.
Ö Remove the combination weighing tray if necessary.
May be that „ol“ will be displayed, but in that step this isn’t any error message
and can be ignored.
Ö Suspend the glass sinker and tare by the TARE/ button.
Ö Place the water container on the platform and immerse the glass sinker. The
balance displays the difference „weight in air – weight in water“.
Note the value (without sign) and calculate the volume of the glass sinker
according to the following formula.
ρ
M
V =
V = volume of glass sinker
M = difference „weight in air – weight in water“
ρ
= density of water considering the temperature, see table 1.
Tab. 1: Density table of water
Temperature
[℃]
Density ρ
[g/cm
3
]
Temperature
[℃]
Density
ρ
[g/cm
3
]
Temperature
[℃]
Density
ρ
[g/cm
3
]
10 0.9997 19 0.9984 28 0.9963
11 0.9996 20 0.9982 29 0.9960
12 0.9995 21 0.9980 30 0.9957
13 0.9994 22 0.9978 31 0.9954
14 0.9993 23 0.9976 32 0.9951
15 0.9991 24 0.9973 33 0.9947
16 0.9990 25 0.9971 34 0.9944
17 0.9988 26 0.9968 35 0.9941
18 0.9986 27 0.9965
ABS-A02-BA-e-1010 13