Toshiba Density (Consistency) Meter LQ500, Руководство по эксплуатации

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6 F 8 A 0 5 2 1
(Note1) Set all sensitivities and ratios to 0.00 and 0.000 respectively for all of the components 1 to
5. (Or to the default values set at shipping.)
10.6 LINEARIZER SETTING
10.6.1 Linearizer function
Depending on the kind of substance to be measured, there may not be a linear relationship between
the values measured by the meter and those obtained by manual analysis. Particularly, in the
measurement of low density substance of about 1%, the meter tends to show readings in higher
value at or less than 0.5% or show lower for the density about 1.5% or higher. In such a case, the
1inealization is necessary because it is difficult to match meter-measured values with manual
analysis values with a single density multiplier over a wide range of densities from low to high.
Suppose there is a curve relationship such as that shown in figure 10.6. 1 between meter-measured
values (using a density multiplier of 1.000) and manual analysis values when a certain substance is
measured at varying degrees of density. To make linealization, the curve is approximated by three
straight lines of A, B, and C.
•
•
•
•
•
•
•
•
•
•
• •
•
•
•
•
• •
A
B
C
0.6 1.0 1.5
B
A
a c
計器測定値 X
O
（濃度補正係数 1.00 ）
0
0.8
1.2
1.5
f
手
分
析
値
濃
度
％
d
e
b
Figure 1 0.6.1 Linearizer setting Diagram
Let the meter-measured value (X
O
) at the bend of the lines A and B (crosspoint) as density A, and
the value at lines B and C to be density B. Also let the slopes of lines A, B, and C as K
1
, K
2
, and K
3
respectively.
Instrument reading X
0
(density multiplier 1.00)
Manual ly analyzed density %