Metrohm 900 - Page 92

10.5 Limit values for the calibration data
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900 Touch Control
Upper limit
pH electrodes:
Input range –999.9 to 999.9 %
Default value 101.0 %
ISE electrodes:
Input range –999.9 to 999.9 mV
The default value depends on the charge of the ion:
–31.0 mV (–2), –61.0 mV (–1), 61.0 mV (+1), 31.0
mV (+2).
Monitoring pH(0)
on | off (Default value: off)
This parameter is only available with pH electrodes.
If this parameter is activated, then the electrode zero point pH(0) will be
monitored.
Lower limit
Input range –20.000 to 20.000
Default value 6.750
Upper limit
Input range –20.000 to 20.000
Default value 7.250
Monitoring E(0)
on | off (Default value: off)
This parameter is only available with ISE electrodes.
If this parameter is activated, then the electrode zero point E(0) will be
monitored.
Lower limit
Input range –2000.0 to 2000.0 mV
Default value –2000.0 mV
Upper limit
Input range –2000.0 to 2000.0 mV
Default value 2000.0 mV
Monitoring cell constant
on | off (Default value: off)
This parameter is only available for conductivity measuring cells.