Thermo Fisher Scientific CyberScan 6000 Series Meters v.1 User Manual
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Ion Setup: Temperature Compensation/Isopotential Point/Alarm Limits
PH6500, PC6500 and PCD6500 meters
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Set Apply Temperature Compensation
Ion concentration is a temperature dependent measurement. Best results are obtained when the
standards and the samples are standardized and calibrated at the same temperature. However, if
you have experimentally determined the isopotential point of your electrode then you can choose
to set ATC to YES and enter the isopotential value. This option is set to NO by default.
To set Apply Temperature Compensation
1. Touch YES to choose Apply Temperature Compensation.
Set Isopotential Point
The isopotential point is the millivolt reading for an electrode at which temperature has no effect
on the measurement. Ion Selective Electrodes, unlike pH electrodes, are not designed to achieve
any particular isopotential point. If samples and standards are at different temperatures when
performing ISE experiments, it will be necessary to experimentally determine the isopotential
point of your own Ion Specific Electrode.
To set Isopotential Point
1. Touch the Isopotential Point box and use the numeric keypad to enter the desired mV
setting for the new isopotential point.
2. Touch Enter to accept this value and return to Ion Setup screen.
Set Alarm Limits
This option allows you to set alarm limits for the ion measuring mode. If the ion concentration
value of the measurement is outside of the boundaries set by the minimum and maximum limits,
a visual warning will appear to let you know that your sample measurement was outside of the set
limits.
The validity range of alarm limits is 0.000001 to 99,900,000,000.
To set Alarm Limits
1. Touch ON or OFF to set the status of the alarm.
2. Touch the Low box and use keypad to enter the new limit values.
3. Touch Enter on the keypad to accept this limit and return to the Ion Setup screen.
4. Touch the High box and use keypad to enter the new limit values.
5. Touch Enter on the keypad to accept this limit and return to the Ion Setup screen.