JUMO 202755, Руководство по эксплуатации

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11 Calibration
56
TC curve
Temperature
compensation
with the TC
curve The present temperature of the medium is applied to the TC curve to
determine the corresponding temperature coefficient,
see "TC curve", Page 56.
Intermediate values, e.g. (
α
x
at T
x
) between two known values (
α
3
at T
3
) and
(
α
4
at T
4
) are derived through a linear interpolation.
The derived TC is used to calculate the compensated conductivity, in the
same way as with the linear compensation.
Sequence for
automatic
calibration The TC curve is automatically recorded over a temperature range that has
been defined by the user. The temperature range between the start and end
temperatures is subdivided into 5 sections of equal size.
The temperature range must be larger than 20°C, and cover the reference
temperature.
Example: Reference temperature 25°C, start temperature 18°C and end
temperature 50°C.
If the measured temperature is lower than the start temperature,
the first TC is used for compensation.
If the measured temperature is higher than the end temperature,
the last TC is used for compensation.
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