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pH Calibration Error Messages
The
HI9819X
displays a series of messages if an error has occurred during calibration.
If the meter does not accept a pH calibration point, a short message is displayed to indicate the
possible error source. The following screens are examples:
These are the available messages:
• “Input out of scale”: the pH value is out of range. The pH sensor may require replacement.
• “Check sensor”: the electrode may be broken, very dirty or the user has attempted to calibrate the
same buffer value twice.
• “Wrong buffer”: the displayed pH reading is too far from the selected buffer value. This is often
seen immediately after a buffer calibration has been completed but before the pH sensor has been
moved to the next buffer. Check if the correct calibration buffer has been selected.
• “Invalid temperature”: the buffer temperature is outside the acceptable range.
• “Wrong buffer” / “Contaminated buffer” / “Check electrode”: the buffer is contaminated or the
sensor is broken or very dirty.
• “Check sensor” / “Clean sensor”: the electrode is broken or very dirty.
• “Wrong” / “Clear old calibration”: erroneous slope condition. These messages appear if the
slope difference between the current and previous calibration exceeds the slope window
(80% to 110%). Press the
Clear
softkey to cancel the old data and continue the calibration
procedure, or press
ESC
to quit the pH calibration mode.
pH CALIBRA
TION
Summary of Contents for HI98194
Page 9: ...9 SENSOR AND PROBE INSTALLATION ...
Page 25: ...25 SETUP MENU STRUCTURE ...
