Hanna-instruments HI 110 Manuel d'utilisateur télécharger pdf (Page 12)

THREE- (HI 110, HI 111) / FIVE-POINT (HI 112,

HI 113) CALIBRATION

 Immerse the pH electrode and the temperature probe

approximately 4 cm (1½) into a buffer solution and

stir gently. The temperature probe should be close to

the pH electrode.

 Press CAL. The CAL and 

BUF

 tags will appear

and the 7.01 buffer will be displayed on the

secondary LCD.

 If necessary, press the ARROW keys to select a different buffer value.

 The   tag will blink on the LCD until the reading is

stable.

 When the reading is stable and close to the selected buffer, the

READY tag will be displayed and the CFM tag will blink.

 Press CFM to confirm calibration.

 The calibrated value will be displayed on the primary LCD

and the second expected buffer value on the secondary

LCD.

 After the first calibration point is confirmed, immerse the pH electrode and the

temperature probe approximately 4 cm (1½) into the second buffer solution

and stir gently. The temperature probe should be close to the pH electrode.

 If necessary, press the ARROW keys to select a different buffer value.

 The   tag will blink on the LCD until the reading is

stable.

 When the reading is stable and close to the selected buffer, the

READY tag will be displayed and the CFM tag will blink.

 Press CFM to confirm calibration.

 The calibrated value is then displayed on the primary

LCD and and the third expected buffer value on the

secondary LCD.

 After the second calibration point is confirmed, immerse the pH electrode

and the temperature probe approximately 4 cm (1½) into the next

buffer solution and stir gently. The temperature probe should be close to

the pH electrode.

BUFFER pH

BUF

pHCAL

BUFFER pH

BUF

pHCAL

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 39 40

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Hanna-instruments HI 110 Manuel d'utilisateur Page 12