HND-C110
page 16
HND-C110 K05/0422
13. Automatic adjustment/calibration of cell
correction
Besides the direct input of the cell correction (see below) via the menu (“CELL
Corr”) the cell correction can also be determined automatically:
Error messages of automatic adjustment/calibration:
CAL Err.1 Cell correction too high
Determined cell correction must not exceed 1.2
CAL Err.2 Cell correction too small
Determined cell correction must not fall below 0.8
CAL Err.3 Solution of wrong range
Wrong solution / far beyond tolerance
CAL Err.4 Wrong temperature
Beyond permitted temperature:
0.0 – 34.0 °C (or 0.0 – 27.0 °C at 111.8 mS/cm)
Alternative to automatic adjustment:
Manual calculation of cell correction with a reference solution
Example KCl-solution c= 0.01 M: 1413 μS cm-1 at 25°C
At other temperatures switch temperature compensation off (t.Cor = oFF) and use the
referring conductivity!
Conductivity displayed = 1500 μS cm-1 if selected cell correction is 1.000 cm-1
(CELL Corr = 1.000)
Conductivity of solution at solution temperature 25 °C: Conductivity real = 1413 μS cm-1
Cell correction c = conductivity real / conductivity displayed [cm-1]
= 1413 / 1970 * cm-1
= 0.942 cm-1 (Enter CELL Corr of 0.942)
