Thermo Fisher Scientific CyberScan pH 5000 - Manual (Page 91)

Instruction Manual CyberScan pH5500/ 5000
To Select Auto Read Mode
You can use this meter when the Auto Read Mode function is active
or when it is inactive. When the Auto Read function is active, the
meter will lock onto a reading when the meter recognizes it as stable.
The meter will not deviate from this reading until meas is touched. If
the auto Read function is inactive, then the meter will continuously
monitor the concentration of the ion of interest. The display on the
measure screen display will indicate any fluctuation in the ion
concentration.
The Ion sample ID# is set the same way as previously described in
pH Setup. See page 41 for instructions.
To Set Ion Stability Criteria
The setup screen allows you to determine how quickly the meter will
respond to electrode drift. There are 3 speed settings.
The Ion Stability Criteria is set the same way as previously described
in pH Setup. See page 51 for instructions.
To Set Default Temperature
Ion concentration is a temperature dependent measurement. The
default temperature option allows you to select the temperature that
will be used by the meter to calculate the correct ion concentration.
The factory default setting is 25°C. You should enter the temperature
value of that solution as the default temperature in order to get the
correct concentration value. The current default temperature setting
will be displayed when the Set Default Temperature screen is
displayed.
The Ion Default Temperature is set the same way as previously
described in pH setup. See page 53 for instructions.
Regardless of the status of the Auto Read Mode, STABLE will be
displayed as the meter recognizes the measurement as stable.
Stability criteria are more stringent at the slower setting. Therefore, if
the highest precision is required, then a slow setting would be
desired. The medium or slow setting is recommended for Ion work.
Best results are obtained when the standards and the samples are at
the same temperature.
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