Hanna-instruments HI 255 Manual do Utilizador descarregar pdf (Página 20)

 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 calibrating order.

The first pH calibration buffer:

The second pH calibration buffer:

The third pH calibration buffer:

Note:  The OLd message displayed beside the pH value means that this

buffer was not used during last calibration. Press and hold down

the ALT&SET keys if you want to see calibration date (or time if old

calibration was made in the same day with current calibration).

 If no bUF message appears on the LCD, the instrument informs

you that calibration was performed in less than three points.

 Temperature compensation mode (Atc or Mtc; with or without temperature

probe).

 pH resolution during calibration:

BUF

pHCAL

BUF

pHCAL

BUF

CAL

BUF

pHCAL

CAL

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Hanna-instruments HI 255 Manual do Utilizador Página 20