Xylem CG 843 - Manual (Page 21)

Operation
89
Temperature probe Measurements can be performed with and without a temper-
ature probe. A connected temperature probe is indicated by
TP on the display.
Note
The pH meter automatically recognizes the type of the tem-
perature probe used. As a result, you can connect elec-
trodes with the NTC30 or Pt1000.
The temperature measurement is absolutely essential for a
reproducible pH measurement. If the measurement is made
without a temperature probe, proceed as follows:
Note
When calibrating without a temperature probe, set up the
current temperature of the respective buffer solution manu-
ally by pressing the <
▲ > < ▼ > keys.
1 Determine the current temperature using an external
thermometer.
2 Set up the temperature by pressing < ▲ > < ▼ >.