ProLab 4000
Ion concentration
99
ba75646e03
12/2012
9.2.2
Measuring
Temperature for
calibrating and
measuring
For precise ion selective measurements, the temperature difference
between measurement and calibration should not be greater that 2 K.
Therefore, adjust the temperature of the standard and measuring solu-
tions accordingly. If the temperature difference is greater the
[TempErr]
warning appears in the measured value display.
Stability control
The Stability control function continuously checks the stability of the
measurement signal. The stability has a considerable impact on the
reproducibility of measured values. The background color is red until
the measured value is stable.
Regardless of the setting for automatic
Autom. stability control
(see
page 63) in the
System
menu, you can start the
Stability control
func-
tion manually at any time.
1
Perform the preparatory activities according to page 97.
2
Immerse the electrode in the test sample.
1
Highlight the channel of the electrode in the measured value
display.
2
If necessary, switch to the ISE display with
<MODE>
.
3
Freeze the measured value with
<SC>
.
In the status line, [SC] is displayed.
Содержание ProLab 4000
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Страница 20: ...Overview ProLab 4000 20 ba75646e03 12 2012...
Страница 30: ...Commissioning ProLab 4000 30 ba75646e03 12 2012...
Страница 68: ...System functions ProLab 4000 68 ba75646e03 12 2012...
Страница 86: ...pH ProLab 4000 86 ba75646e03 12 2012 Note A calibration line is determined for the two point calibration...
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