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Ion concentration
92
7.2.3
Reference measurement (Ref Meas)
A reference measurement enables you to assign the voltage value 0
mV to the calibration curve of your electrode for a specific ion
concentration (reference concentration).
Prerequisite:
The measured value display must show the voltage.
A valid calibration must be available.
1
Switch to the Display mode.
2
Only if no valid calibration is available
(no sensor symbol on the measured value display):
Perform a calibration (see section 7.3).
3
Switch to the display of the voltage (U) with
4
Switch to the Menu mode.
46
5
Use
to select the main Meas menu.
6
Select the ISE menu item with
7
Confirm the ISE menu item with
8
Select the ISE setup menu item with
9
Confirm the ISE setup menu item with
10
Select the Ref Mess menu item with
11
Confirm the Ref Meas menu item with
The Ref Mess function is active (
-
The
symbol flashes on the measured value display.
12
Switch to the measured value display with
13
Open the input field for temperature and reference
concentration with
14
Select the input field R with [Next].
15
Enter the reference concentration R with
16
Use [ESC] to leave the input field.
The measured voltage value is referred to the new reference
concentration.
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82
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ba75446e05
07/2010
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