GE pH/C-900 Operating Instructions Manual page 44

5 Operation
5.3 Setup menu
Step
2
3
4
5
When entering the cell constant from UNICORN select System Control:System:Calibrate
and select Cond_Cell.
Setting up pH temperature
compensation
The relationship between pH and the output signal from the pH electrode is temperature
dependent. For more accurate measurements during temperature changes, the pH
measurement can be temperature compensated.
In normal applications, if the temperature of the buffers and calibration buffers are
identical, temperature compensation does not need to be on.
When using temperature compensation it is important that the temperature of the pH
electrode is the same as that of the conductivity flow cell since that is where the temper-
ature is measured.
Step
1
2
44
Action
Select sub menu Setup Conductivity, press OK.
Select sub menu Setup Adjust Cell Constant, press
OK.
A warning message will be displayed, press OK.
Enter the cell constant, press OK. The new cell con-
stant is updated.
Action
Select main menu Setup, press OK.
Select menu Setup pH, press OK.
Display
Setup Conductivity
Setup Adj Cell Const
(34.4/cm)
Warning! This will
change cell calib
Setup Adj Cell Const
(34.4/cm) 35. 5
Display
Setup
Setup pH
Monitor pH/C-900 Operating Instructions 29-0549-25 AB