Xylem handylab pH LF 12 - Manual (Page 19)

handylab pH/LF 12 Operation
19 ba75370e03 11/2009
Temperature
measurement in
pH measurements
You can perform pH measurements with or without a temperature probe as
well as with the temperature probe of a conductivity measuring cell. The mea-
suring instrument recognizes which sensors are connected and automatically
switches to the correct mode for the temperature measurement.
The following cases are distinguishable.
* 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 probe.
If a temperature probe is connected, it is indicated on the display by TP.
Note
When calibrating without a temperature probe (no TP display indicator dis-
played), enter the current temperature of the respective buffer solution man-
ually using the <
▲> <▼> keys while keeping the
<RUN/ENTER> key depressed.
Temperature probe Display Mode
pH Cond
yes - TP Automatic with
pH temperature probe
yes yes TP
- - Manual
- yes TP
flashes The temperature value of the
2nd sensor (Cond) in the
same test sample is used for
the pH measurement*