Hanna-instruments HI 2216 Manuale Utente Scaricare il pdf (Pagina 20)

The third pH calibration buffer:

The fourth pH calibration buffer:

The fifth pH calibration buffer:

Notes: • The “OLd” message displayed beside the pH value means

that this buffer was not used during last calibration. Press

and hold down SETUP if you want to see calibration date

(or time, if old calibration was performed on the same day

as the current calibration).

• For each custom buffer used in calibration, the “BUFFER

pH” tag will blink.

• If “no bUF” message appears on the LCD, the instrument

informs you that the calibration was performed with less

than five buffers.

• Calibration Expiration status:

- if disabled.

- or the number of days until the calibration alarm will be displayed.

- or if expired (7 days ago).

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Hanna-instruments HI 2216 Manuale Utente Pagina 20