Metrohm tiamo 2.4 (process analysis) - Manual (Page 1445)

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6 Configuration
tiamo 2.4 (for Process Analysis)
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6.7.3.3 Properties - Calibration data
Tab: Configuration ▶ Sensors ▶ [Edit] ▶ Properties... ▶ Calibration data
NOTE
This tab only appears for sensors of the type pH electrode, ISE elec-
trode, Conductivity sensor and Thermoprobe.
Specific calibration data for pH electrodes
Slope
Slope of the pH electrode. This value can be determined automatically
with a calibration from the linearized calibration curve or entered man-
ually. The slope of a pH electrode is available for calculations as the varia-
ble 'Command name.SLO.
Input range –999.9 - 999.9 %
Default value 100.0 %
pH(0)
Apart from the slope, pH(0) is the second characteristic of the calibration
function U = f(pH). pH(0) is the x-axis intercept of the calibration curve,
i.e., it corresponds to the pH value at 0 mV. The electrode zero point
pH(0) of a pH electrode is available for calculations as the variable 'Com-
mand name.ENP'.
Input range –20.000 - 20.000
Default value 7.000
Specific calibration data for ISE electrodes
Slope
Slope of the ISE electrode. This value can be determined automatically
with a calibration from the linearized calibration curve or entered man-
ually. The slope of an ISE electrode is available for calculations as the varia-
ble 'Command name.SLO.
Input range –999.9 - 999.9 mV
Default value 59.2/valence mV
E(0)
E(0) is the second characteristic of the calibration function U = f(log c).
E(0) is the y-axis intercept of the calibration curve, i.e., it corresponds to
the potential at log c = 0. The electrode zero point E(0) of an ISE elec-
trode is available for calculations as the variable 'Command name.ENP'.