Hanna-instruments HI 9017 Manual do Utilizador descarregar pdf (Página 21)

PH CALIBRATION FOR HI9218 & HI9219

Procedure

• Turn the instrument ON after connecting the pH

electrode and the temperature probe.

• Immerse the temperature probe together with

the electrode into pH 7.01 buffer solution or

manually set the temperature to the tempera-

ture of the buffer (if you are not using the

temperature probe HI7669/2W see page 25).

Note: the electrode should be submerged approximately 4 cm (1½")

into the solution. The temperature probe should be positioned

as close to the pH electrode as possible.

• Shake briefly and then press the CAL button.

The printer will print this step by step procedure

instructions.

At the same time, the pH symbol will flash to indicate calibration is in

progress.

The temperature compensated pH value will be displayed. "Err4"

appears if the electrode is in the wrong buffer.

4 cm

(1½

HI 7007

Dip electrode

in the pH 7

solution, wait

for 'YES' to

appear and then

press CFM

CAL

ºC

°C

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Hanna-instruments HI 9017 Manual do Utilizador Página 21