VWR 662-2351, Инструкция по эксплуатации

Страница: 21 / 38

- 17 -
12.2. Measurement with manual temperature compensation
Disconnecting the temperature probe from the meter switches the meter to
the manual temperature compensation mode. Next to the entered
(not measured) temperature value, instead of the symbol, the symbol
displays (Pic. 7). The procedure of measurement with manual temperature
compensation is similar to that of measurement with ATC. The difference is
in entering the solution temperature value. This value is displayed in place of
the measured temperature and is compensated.
In case of measurement with manual temperature compensation:
- turn the meter on with the
button;
- insert the pH electrode into the vessel with the measured solution; if the
electrode is not calibrated or has already been in use for a long period of
time, perform the calibration (chapter 10). During measurements in a
vessel don’t touch its bottom and walls with the electrode. It is advisable to
use an electrode stand;
- measure the temperature of the solution with use of a laboratory
thermometer and enter the value. To do so, press the window and
in the open screen press the
MANUAL TEMP.
window, the numerical
keyboard will appear to enter the value and confirm with the button;
- wait till the value stabilises and read the result.
Pic. 7