Hanna-instruments HI 9017 Manual do Utilizador descarregar pdf (Página 39)

4 cm

(1½

HI 7009

PROGRAM #2 (HI9318)

This program lets you calibrate with buffer values other than 4, 7 and

10 pH which are pre-programmed into memory.

To enter program 2, press the 2 key

and then the PGM key.

A is the first buffer value and

B is the second buffer value.

The buffers can be anywhere between 0 and 14 pH.

Example:

To calibrate with NBS buffers 6.86 pH and 9.18 pH at a temperature

of 10°C.

The corresponding pH values at this temperature are 6.92 and 9.33

respectively.

Immerse the pH electrode and the temperature probe

into the 1st buffer (e.g. pH 6.86).

Check the appropriate value for the buffer at the

measured buffer temperature (see page 26).

After about 30 seconds enter the 1st buffer value at the working

temperature followed by "A". E.g. 6.92 (at 10°C).

Rinse the electrode and immerse it in the 2nd buffer

(e.g. pH 9.18).

PGM

PROGRAM 2

A enter 1st buf-

fer

B enter 2nd buf-

fer

4 cm

(1½

HI 7006

6 . 92

PROGRAM 2

A enter 1st buf-

fer

B enter 2nd buf-

fer

1st buffer

6.92

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 63 64

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Hanna-instruments HI 9017 Manual do Utilizador Página 39