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Temperature Compensation
The temperature compensation has a large effect on the conductivity
measurement. If enabled, the meter will use the measured
conductivity and temperature readings to calculate the result and
automatically compensate to the selected reference temperature. If
the temperature coefficient is set to 0, the temperature compensation
will be disabled, the meter only shows the actual conductivity at the
measured temperature.
Automatic Temperature Compensation
Connect the temperature probe to meter (refer to the
Connecting the
Temperature Probe
section on page 8).
The ATC icon appears on the screen, the meter is now switched to the
automatic temperature compensation mode.
Manual Temperature Compensation
If the meter does not detect a temperature probe, the degrees Celsius
icon (° C) will show on the screen indicating the meter is switched to
the manual temperature compensation mode. To set the temperature
value follow the steps below.
1. Press and hold the
° C
key to enter the temperature setting.
2. Press the
/
key to modify the temperature value.
3. Press the
Enter
key to save.
Press and hold the
/
key will make the value change faster.
Selecting a Conductivity Electrode
The A series meter is capable of using three types of the conductivity
electrodes. Before the calibration and measurement, ensure that you
have selected a suitable electrode according to the anticipated sample
conductivity. The following table lists the selectable electrode and its
effective measurement ranges.
Electrode
Measurement Range
Cell Constant
CON-0.1
0.5 to 100 µ S/cm
K = 0.1
CON-1
10 µ S/cm to 20 mS/cm
K = 1
CON-10
100 µ S/cm to 200 mS/cm
K = 10
If the 4-pole conductivity electrode is selected, its best measurement
range will be 100 µ S/cm to 200 mS/cm.
Conductivity Calibration
The A series meter allows 1 to 3 points conductivity calibration. Before
calibration, ensure that selected cell constant (K
=
0.1, 1, 10) matches
connected electrode.
For better accuracy, we recommend to perform 3 points calibration or
select a standard solution closest to the sample conductivity you are
measuring. The meter will automatically detect the standard solution
and prompt the user to perform the calibration. The following table
shows the default standard solution for each measurement range.
Measurement Range
Default Standard Solution
0 to 20 µ S/cm
10 µ S/cm
20 to 200 µ S/cm
84 µ S/cm
200 to 2000 µ S/cm
1413 µ S/cm
2 to 20 mS/cm
12.88 mS/cm
20 to 200 mS/cm
111.8 mS/cm
Single Point Calibration
1.1 Ensure that the meter is in the conductivity mode and you have
selected 1 point calibration in the setup menu.
1.2 Rinse the conductivity electrode with distilled water, then rinse
with a small amount of standard solution.
