04/03 347 LB 444
54
Square Temperature Coefficient
To calculate the square coefficient one first has to calculate the linear coefficient, starting
from the reference temperature (here: lowest temperature), as described above. The ini-
tial temperature should equal the lowest product temperature.
After calculation of the linear coefficient with temperature compensation enabled, in-
crease the product temperature by at least 40 to 50°C.
From the resulting change in reading and the associated temperature change one then
calculates the square coefficient TC
2
:
()
-
-
- = TC
2
21
DA
2
ϑϑ
ρ
A
= Actual density value (table value or lab value at this temperature)
ρ
D
= Displayed density value
ϑ
1
= Original temperature (in our example 10°C)
ϑ
2
= Temperature at ρ
D
Enter the calculated value at TC
2
. Now the originally noted density or concentration value
must be obtained again.
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