ELMETRON CC- 411, User Manual, Page: 27 / 52

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9.2.3. Calibration with manual temperature compensation
In order to calibrate the meter:
-
turn the meter on with the button;
-
enter the standard solution value (point 9.2.1)
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disconnect the temperature probe (the symbol disappears);
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enter the 25°C value with the , buttons;
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immerse the conductivity cell in the sample solution and hold it at least 1cm
away from the bottom and the walls of the vessel. The measuring cell
should be filled with the sample solution and shouldn’t include any air
bubbles, the electrode’s surface should be evenly moistened*;
-
measure the temperature of the sample solution with lab thermometer and
bring it to 25
o
C;
-
in the conductivity measuring mode press and hold the button till
displaying the CAL symbol on the screen (Pic.10);
-
after the value stabilises the P1 symbol (calibration point) will be displayed.
Press the
button. Blinking of the reading signalises recording the
calibration value, at the same time the measuremet value will be adjusted
to the applied standard value. If the applied standard value is different then
the value stored in the memory, the meter does not recognise it or the cell
connected with the meter is broken, the
symbol will display;
-
return to the measuring mode by pressing the button.
Pic. 10
The meter is calibrated and ready to work.
* - air bubbles may be removed by moving the immersed cell. In order to make moistening of the
electrodes easier, it is recommended to immerse the cell in distilled water with washing-up liquid, and than
wash it in distilled water.