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9 CORRECTIONS IN DENSITY CALCULATION
This density meter, which operates on the basis of phase difference measurement by microwaves makes
automatic corrections to the measured phase angel for the fluid temperature and phase angel rotation
before making the density calculations for the measured substance.
This chapter describes the methods for corrections and the density calculations.
9.1 Density Calculation
This density meter measures the phase lag θ
and the phase lag θ
proportional to the density is used to obtain the density. The density (X) of the measured matter is
calculated in accordance with the following equation.
X = C ×（ a × △θ ）＋ b
where
X
△θ : Phase difference. △θ = θ
a
b
c
in the measured matter, the difference △θ(= θ
2
: Measured density value (%TS)
: Density line slope;
: Density intercept;
: Density multiplier (Density correction factor.)
74
in the density zero water (zero water), which is the basis,
1
(degrees)
−θ
2
1
6 F 8 A 0 7 8 7
- θ
) of which being
2
1
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