AND GR Series 사용 설명서 - 페이지 6
{카테고리_이름} AND GR Series에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. AND GR Series 20 페이지. Density determination kit applicable analytical balance models bm/gh/hr-i/gr/hr/ha series
페이지 인쇄DENSITY 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