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3.8 Error Codes
ERROR EO OUTSIDE ±30mV LIMITS
This error message will be displayed when the mV value for a buffer is more or less than 30mV
from the ideal Nernstian value.
ERROR SLOPE OUTSIDE 75% -125%LIMITS
This error message is displayed when the slope value is outside the range of 75 - 125%.
UNABLE TO RECOGNISE BUFFER
This error message will be displayed when the buffer value is more than 0.5 pH units from the set
value.
Rinse the electrode(s) in deionised water.
Once a successful calibration has been completed the instrument will return to the measuring
mode.
The instrument is then ready to undertake the measurement of unknown solutions. If the tempera-
ture of the unknown solution differs from the buffer, the Temperature Set up menu should be used
to set the instrument display to the temperature of the unknown solution.
If the instrument fails a calibration the error message ERROR Eo OUTSIDE ±30mV LIMITS will
scroll along the secondary display. (refer Section 3.8 for details of Error Codes).
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