Metrohm 900 - Page 87

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10 Sensors
900 Touch Control
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Detailed information concerning calibration is displayed in this dialog Edit
sensor / Calibration data.
Slope
Slope of the electrode.
pH electrodes:
Input range –999.9 to 999.9 %
Default value 100.0 %
ISE electrodes:
Input range –999.9 to 999.9 mV
The default value depends on the charge of the ion.
pH(0)
This parameter is only visible with pH electrodes.
pH value of the electrode at 0 mV. Apart from the slope, pH(0) is the sec-
ond characteristic of the calibration curve.
Input range –20.000 to 20.000
Default value 7.000
E(0)
This parameter is only visible with ISE electrodes.
Electrode zero point. Apart from the slope, E(0) is the second characteristic
of the calibration curve.
Input range –2000.0 to 2000.0 mV
Default value 0.0 mV
c(blank)
This parameter is only visible with ISE electrodes.
Blank value concentration.
Input range –999999999 to 9999999999
Default value 0.00
Variance
This parameter is only visible with ISE electrodes.
The variance is only calculated, if the calibration has been carried out with
at least three standards.
Cell constant
This parameter is only visible for conductivity measuring cells.
Cell constant.