Hanna-instruments HI 2550 Manual do Utilizador descarregar pdf (Página 24)

• The pH calibration slope (the GLP slope is the average of the calibration

slopes; the percentage is referred to the ideal value of 59.16 mV/pH).

• The calibration buffers in order.

The first pH calibration buffer:

The second pH calibration buffer:

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 the SETUP key if you want to see calibration

date (or time if old calibration was performed on the same

day as the current calibration).

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

informs you that calibration was performed in less than

three points.

CAL pH

BUF

CAL pH

BUF

CAL pH

BUF

CAL

• Calibration Expiration status:

- if disabled.

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Hanna-instruments HI 2550 Manual do Utilizador Página 24