Hanna-instruments HI 3220 Manual de usuario descargar pdf (Pagina 19)

Wrong slope

The calibration cannot be confirmed.

The evaluated slope is less than the lowest accepted value (80% of default

slope).

The evaluated slope is more than the highest accepted value (110 % of default

slope).

ERROR SCREENS

Wrong buffer

The calibration cannot be confirmed.

The pH reading is not close to the selected buffer. Select another buffer using

the ARROW keys or change the buffer.

Electrode Dirty/Broken alternatively with Buffer Contaminated

The calibration cannot be confirmed.

The offset of the electrode is not in the accepted range. Check if the electrode

is broken or clean it following the Cleaning Procedure (see page 59). Check the

quality of the buffer. If necessary, change the buffer.

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Hanna-instruments HI 3220 Manual de usuario Pagina 19