Hanna-instruments HI 84431 Manual de usuario descargar pdf (Pagina 20)

• The

(unstable measurement) symbol will be shown on the display until the reading becomes stable.

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

(unstable measurement)

symbol will disappear and the Confirm key will become active.

• Press Confirm to confirm the calibration.

• Press ESC to exit calibration.

Notes: • To clear a previous calibration and to return to the default value, press Clear at any

time after entering calibration mode. The “Calibration cleared” message will be

shown for a few seconds on the display. If Clear is invoked during the first calibration

point the instrument returns to the measurement mode.

• The Clear key is displayed only if a previous calibration exists.

Point 2 calibration

• The calibrated value will be shown on the display and the second expected buffer value will

be displayed.

• Remove the electrode holder with electrodes from the top of the beaker.

• Place the second buffer into beaker and place in beaker holder. Rinse the electrodes in a

beaker containing the second buffer rinsing solution.

• Place the electrode holder (with electrodes) on the top of the beaker, lock cap by turning.

• If necessary press the ARROW keys in order to select a different buffer value.

• The

(unstable measurement) symbol will be shown on the display until the reading

becomes stable.

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

(unstable measurement)

symbol will disappear and the Confirm key will become active.

• Press Confirm to confirm the calibration.

• The calibrated value will be shown on the display and the third expected buffer value will be

automatically selected.

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Hanna-instruments HI 84431 Manual de usuario Pagina 20