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体重計 AND GR SeriesのPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。AND GR Series 20 ページ。 Density determination kit applicable analytical balance models bm/gh/hr-i/gr/hr/ha series
ページを印刷するDENSITY MEASUREMENT PRINCIPLES
3.
3.1. Density
Density refers to the total mass of a sample per unit volume.
M
ρ
=
V
3.2. Specific Gravity
Specific gravity refers to the ratio of the density of a sample to the density of pure water at 4°C under a
pressure of 1013.25 hPa.
M
ρ =
V
3.3. Archimedes' Principle of Density Measurement
The AD-1653 is combined with an electronic balance to measure the density of a sample based on the
Arichimedes' principle.
Arichimedes' principle
A body immersed in a liquid (or a gas) is subject to an upward force equal to
the weight of the liquid (or the gas) it displaces. The upward force is buoyancy.
(Unit: g/cm
ρ
: Density
M : Mass
V : Volume
(No unit)
ρ
4
ρ
: Specific gravity
M : Mass
V : Volume
ρ
: Density of water at 4°C
4
(0.99997 g/cm
3
, etc.)
≈
3
3
1.000 g/cm
)
4