Hanna-instruments HI 84529 Manual do Utilizador descarregar pdf (Página 26)

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Operational Guide

calibration or ESC to exit calibration.

5. After the calibration point has been conrmed, press ESC to exit without

performing the second calibration point.

2 Point Calibration

1. After pressing CONFIRM in step 4 of

1 point calibration procedure of the

calibrated value will be shown on

the display and the second expected

buer value will be displayed.

2. Remove the electrode holder with

electrodes from the top of the beaker.

3. Place the second beaker with calibration buer in the beaker holder.

Rinse the electrodes in a beaker containing the second buer rinsing

solution.

4. Place the electrode holder (with electrodes) on the top of the beaker

and secure it by turning clockwise and press STIR.

5. If necessary, press the ARROW keys in order to select a dierent buer

value. The (unstable measurement) symbol will be shown on the

display until the reading becomes stable.

6. When the reading is stable and close to the selected buer, the (unstable

measurement) symbol will disappear and the Conrm key will become active.

7. Press CONFIRM to conrm the calibration.

8. The calibrated value will be shown on the display and the third expected

buer value will be automatically selected.

9. After the second calibration point has been conrmed, press ESC to exit

without performing the third calibration point.

3 Point Calibration

1. Remove the electrode holder with

electrode from the top of the beaker.

2. Place the third beaker with calibration

buer in the beaker holder. Rinse the

electrodes in a beaker containing the

third buer rinsing solution.

3. Place the electrode holder (with

electrodes) on the top of the beaker and secure it by turning clockwise

Electrode

Calibration

Procedure

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Hanna-instruments HI 84529 Manual do Utilizador Página 26