Amprobe WT-60 User Manual page 21

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Linear temperature correction:
In moderately and highly conductive solutions, temperature correction can be
based on a linear equation involving a temperature coefficient (θ). The
coefficient is usually expressed as a conductivity variation in %/°C.
Linear temperature correction is used, e.g. for saline solutions, acids and
leaching solutions.
100
Κ =
Tref
100 + θ • (T - T )
where:
K = Conductivity at Tref
Tref
K = Conductivity at T
T
T = Reference temperature
ref
T = Sample temperature
θ= Temperature coefficient
Note: the correction is accurate only within a limited temperature range around
T1 and T2. The greater the difference between T and Tref, the higher the risk of
error.
Calculating Temperature Coefficients (θ)
By measuring the conductivity of a sample at temperature T1 close to Tref and
another temperature T2, you can calculate the temperature coefficient by
using
the following equation:
(Κ - Κ ) • 100
T2
θ =
(T - T ) • Κ
2 1
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• Κ
T
ref
T1
T1
16
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