wtw Multi 197i Operating Manual page 18

Operation
Temperature measure-
ment in pH measure-
ments
18
You can perform pH measurements with or without a temperature sen-
sor as well as with the temperature sensor of an oxygen sensor or a
conductivity measuring cell. The measuring instrument recognizes
which sensors are connected and switches automatically to the correct
mode for the temperature measurement.
The following cases are distinguishable.
Temperature sensor
pH Cond or
Oxi
yes -
yes yes
- -
- yes
* If you do not wish that, you can:
– either disconnect the 2nd sensor and use the manual temperature
input or
– use an electrode with a temperature sensor.
If a temperature sensor is connected, it is indicated on the display by
TP.
Note
When calibrating without a temperature sensor (no TP display indicator
displayed), enter the current temperature of the respective buffer solu-
tion manually using the <▲> <▼> keys while keeping the <RUN/EN-
TER> key depressed.
Display
TP Automatic with
pH temperature sensor
TP
Manual
TP The temperature value of the
flashes second sensor (Cond or Oxi)
in the same sample is taken
over for the pH measurement*
Multi 197i
Mode
ba75339e04 07/2009