A&D Weighing BM-20 - Manual (Page 66)

64 BM series
14. Density Measurement
(
Specific gravity
)
The balance is equipped with a density mode. It calculates the density of a solid using the mass
value of a sample in air and the mass value in liquid. We recommend the use of the AD-1653
Density Determination Kit.
Note
The density mode was not selected for use when the balance was shipped from the factory.
To use this mode, change the function table settings to activate the density mode.
Refer to "
5.2. Storing Active Units".
When the density mode is selected, the response adjustment function can not be used.
The minimum display is 0.0001 g while using the density mode.
Formula to obtain the density
The density can be obtained by the following formula.
Where ρ : Density of a sample
A : Mass value of a sample in air
B : Mass value of a sample in liquid
ρ
0
: Density of a liquid
Prior to measurement: Changing the function table
Prior to measurement, change the function table as follows:
1 Selecting the density mode.
The density mode is available as one of the weighing units.
Select it by pressing the MODE key. To use the mode, select it (unit of Unit .) in the function
table. Refer to " 5.2. Storing The Active Units".
2 Selecting a way to set the density of a liquid.
Select the liquid density input method from the function table below.
Note
The following function table is displayed only when the unit of
Unit is active. The table of the
density mode ( d5 fnc ) is displayed next 5if .
Class Item and Parameter Description
0 Water temperature d5 fnc
Density function ldin
Liquid density input
1 Liquid density
is factory setting.
A
ρ = x ρ
0
A - B