SCHOTT ProLab 4000, Operating Manual, Page: 98 / 228

Ion concentration ProLab 4000
9 8 ba75646e03 12/2012
9.2 Measuring the ion concentration
9.2.1 Preparatory activities
Perform the following preparatory activities when you want to measure:
Temperature sensor You can measure with or without a temperature sensor. The TP display
indicator appears when a temperature sensor is connected.
1 Connect an ion sensitive electrode to the meter.
2 Highlight the channel of the electrode in the measured value
display.
3 If necessary, select the ISE display with <MODE> .
4 Open the Measuring / ISE settings / Ion type menu and select
the ion type to be measured.
5 With manual temperature input:
– Measure the temperature of the test sample using a ther-
mometer.
– Open the Measuring / Setting of man. temp... menu.
The Manual temperature window opens.
– Enter the measured temperature value and confirm it with
[OK] .
6 Calibrate the meter with the electrode (see page 103).
or
For measurement with a method, start a method.
The calibration is included in the course of the measuring
method (see page 113 ff.).
Note
While no valid calibration is available, e.g. in the delivery condition,
Error appears in the measured value display.
Note
If you work with an ion selective electrode without temperature sensor,
you can also use the temperature sensor of another electrode (see
page 62). In this case, the indication from which channel the temper-
ature value is taken appears next to the temperature value.