Twilight Palette Series, Инструкция по эксплуатации

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19
13. User scale function
13-1. Introduction
This instrument can display and button between 4 scales.
Scale 1 is Brix (%).
Scales 2, 3, and 4 are user scales.
User scales use an offset function to calculate the converted concentration from the Brix
value and directly display that value for various samples, such as water-soluble liquids used in
metalworking, cleaning fluid, or various medicines, and other industrial liquids.
scale name scale number sample name
a: coefficient
(multiplication)
b: addition/subtraction
number
Brix (％) 1
User scale 2
User scale 3
User scale 4
N
After setting the user scale, the information can be documented in the above chart as follows.
Example：
scale name scale number sample name
a: coefficient
(multiplication)
b: addition/subtraction
number
Brix (％) 1
User scale 2 Cutting Oil A 2.50 0.00
User scale 3 Cutting Oil B 1.87 2.00
User scale 4 Cutting Oil C 0.94 0.00
13-2. Offset Function
The relationship between a user scale (concentration) and Brix can be defined as:
"User scale (concentration) value
= a: coefficient (multiplication)× Brix value".+ b: addition/subtraction number
As for the relationship between Brix and the user scale (concentration), the condition should
be that the Brix and concentration are both graphically a linear line (0.0% of Brix 0.0% =
concentration). The display of -99.9 to 99.9 is possible for a user scale.
<How to obtain a conversion coefficient>
Example:
1. Use a known liquid sample. For
example, if 10% of concentration is
commonly used, prepare a sample
liquid of 10.0% of concentration.
2. Measure the sample above using the
Brix scale. The measured Brix value of
this liquid, for example, is 4.0.
3. Using the formula:
User Scale (concentration) value /
Brix value = conversion coefficient
Thus, 10.0 / 4.0 = 2.50.
The coefficient (multiplication) 'a' is
2.50.
Table 13-1
Cutting Oil A Cutting Oil B
Cutting Oil C
C
o
nc
en
tr
at
io
n
％
Brix