EUTECH INSTRUMENTS COND 6 PLUS - 12 Calculating Temperature Coefficients

Instruction Manual COND 6+, TDS 6+, SALT 6+
-31-
12. CALCULATING TEMPERATURE COEFFICIENTS
To determine the temperature coefficient of your sample solution use this formula:
Where:
t
c
= Temperature coefficient 25 = 25 °C
C
T1
= Conductivity at Temp 1 C
T2
= Conductivity at Temp 2
T
1
= Temp 1 T
2
= Temp 2
NOTE: A controlled temperature water bath is ideal for this procedure.
1. Immerse the probe into a sample of your solution and adjust the temperature
coefficient to 0% (that is, no compensation) by following instructions as described
in Section 6.5 – Temperature Coefficient.
2. Wait for 5 minutes. Note T
1
and C
T1
(conductivity at T
1
).
3. Condition the sample solution and probe to a temperature (T
2
) that is about 5 °C to
10 °C different from T
1
, and note the conductivity reading C
T2
.
NOTE: Record your results for future reference. Ideally T
1
and T
2
should bracket your
measurement temperature, and should not differ by more than 5 °C.
4. Calculate the temperature coefficient of your solution according to the formula
shown above.
5. Enter the calculated temperature coefficient into the meter.
See Section 5.5 – Temperature Coefficient.
The calculated temperature coefficient will now be applied to all the meter readings.