Hanna-instruments HI 98280 Manuel d'utilisateur télécharger pdf (Page 36)

The 3 options are correlated, so that each of the procedures will calibrate all the

3 ranges.

NoteNote

Note For correct EC readings, calibration should be performed using a stan-

dard solution with a conductivity value close to the sample to be mea-

sured.

After choosing the “Conductivity calibration” mode from the “Calibration” menu,

select the calibration type with the arrow keys and then press <OK>.

Conductivity

• Select the “Conductivity” option and press <OK> to confirm.

• Fill a beaker with a standard conductivity solution (see “Accessories” section for

choosing the proper HANNA solution).

• Immerse the probe in the solution and wait for stable reading. The probe sleeve

must be inserted.

• The main display shows the actual reading, while the secondary level displays

the standard value.

• To change the standard value, press <Cal. point> and the list of available

standard values is displayed: 0 µS/cm, 84 µS/cm, 1413 µS/cm, 5.00 mS/cm,

12.88 mS/cm, 80.0 mS/cm and 111.8 mS/cm.

• Press <Custom> to insert a custom value (temperature compensated value).

Choose <Resolution> to select the desired resolution.

• When the reading is stable, press <Confirm> to store the calibration data.

• After confirmation, the following messages are displayed: “Storing data on

probe, please wait...”, “Updating GLP data, please wait...” and “Calibration

completed”.

• Press <OK> to return to the “Calibration” menu.

• To return to the main menu, press ESC repeatedly.

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Hanna-instruments HI 98280 Manuel d'utilisateur Page 36