wtw pH 7310 - Calibration Interval; Settings for ORP Measurements

Settings pH 7310
42 ba75929e02 10/2011
7.1.3 Calibration interval
The calibration evaluation is displayed as a sensor symbol.
The sensor symbol flashes after the adjusted calibration interval has expired. It
is still possible to measure.
Setting the calibra-
tion interval
The calibration interval is set to 7 days in the factory.
You can change the interval (1 ... 999 days):
7.2 Settings for ORP measurements
The settings are made in the menu for calibration and measurement settings of
the pH/ORP measurement. To open the settings, display the required parame-
ter in the measured value display and press the <F1>/[menu] or <ENTER> key.
After completing the settings, switch to the measured value display with <M>.
Default settings are printed in bold.
The buffers are selected in the menu, pH / <F1>/[Menu] / Calibra-
tion / Buffer (see 7.1.1 C
HANGING THE SETTINGS FOR PH MEASURE-
MENTS, PAGE 38).
To ensure the high measuring accuracy of the measuring system,
calibrate after the calibration interval has expired.
1. Open the menu for measurement settings with [Menu]<F1>.
2. In the Calibration / Calibration interval menu, set the calibration interval
with
<><>.
3. Confirm the setting with <ENTER>.
4. Quit the menu with <M>.
Menu item Possible
setting
Description
Man. temperature -25 ... +25
... +130
°C
Entry of the manually determined tem-
perature. For measurements without
temperature sensor only.
Temperature unit °C
°F
Temperature unit,
degrees Celsius or degrees Fahrenheit.
All temperatures are displayed with the
selected unit.