Measuring - Testo 252 Bedienungsanleitung

pH measurement

Measuring

You have prepared the electrode and
measuring instrument according to the chapter
"Instructions of use", and the instrument has
been switched on.
In the following example we assume that you have
connected a pH combination electrode (without
temperature probe). Should you use another
electrode, look up the meaning of the different
parts of the display in the chapter "Display
variations" (see pages 42 and 13).
Have you activated the right calibration (i. e.
pH 1 or pH 2) in the configuration menu?
Insert the electrode into the measuring solution.
The instrument displays the pH value and a
temperature value. The pH value is based on the
temperature value displayed. As you have not
connected a temperature sensor, you must
correct the temperature value manually.
You can change the temperature value by pressing
the arrow key. (If you have activated the infrared
printer in the configuration menu - "Yes Ir" is stored
in the printing mode, that means you have to press
the arrow key twice ).
The flashing unit of temperature indicates that the
alteration mode has been selected.
Confirm the choice of the alteration mode with
Enter.
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