ELMETRON CX-401, Руководство пользователя

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15.2.3. Calibration with manual temperature compensation
It is necessary to:
- turn the meter on with the button;
- choose the conductivity measuring mode (section 13.1);
-
disconnect the temperature probe and press the ,
buttons
simultaneously. In the lower line of LCD an introduced reference
temperature value will appear (section 13.5);
-
enter the value of the standard solutions (point 15.2.1);
-
immerse the conductivity cell in the first standard solution and hold it at
least 1 cm away from the bottom and walls of the vessel. The measuring
cell should be filled up with the standard solution and should not include
any air bubbles, the electrode’s surface should be evenly moistened*;
- measure the temperature of the standard solution with a laboratory
thermometer and adjust it to the set reference temperature;
-
press and hold the button until the CAL symbol appears (Pic. 31).
-
with the button choose the calibration point corresponding to the
standard solution value, the point number (P1...P5) and the value entered
for this point will apear for a moment;
-
wait till the value stabilises and press the button. Blinking reading
informs about recording it in the memory. If the symbol displays, it is
necessary to check the entered value of the standard solution;
-
immerse the conductivity cell and the temperature probe in the next solution
and with the button choose its value to calibrate in the next points
or
-
exit the calibration mode by pressing the button.
Pic. 31
The meter is calibrated and ready to work.