Xylem ProLab 3000 Manual do Utilizador descarregar pdf (Página 107)

ProLab 3000 Ion concentration

107

ba75645e03 12/2012

Continuing with three-

point to nine-point

calibration

Repeat the steps 9 to 16 in the same way with the third and further stan-

dard solutions as necessary. The new calibration values are displayed

after the last calibration step is finished.

16 Using [OK], confirm the Finish with 2-point calibration infotext

and take over the new calibration values.

The calibration record is displayed and output to the interface.

The calibration procedure is finished.

Continue the calibration with [Continue].

Cancel the calibration procedure without taking over the cali-

bration values with <ESC>.

Note

A calibration line is determined for two-point calibration.

Note

Based on the calibration data, the calibration line is determined in sec-

tions. A straight line of the calibration is determined according to the

Nernst equation between the highest and second highest calibration

standard.

Between the lowest and second lowest calibration standard, a calibra-

tion line is determined according to the Nernst equation modified by

Nikolski. The Nikolski equation reproduces the real course of the char-

acteristic curve of the electrode for the low concentration range.

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Xylem ProLab 3000 Manual do Utilizador Página 107