Hanna-instruments HI 88703 Uživatelský manuál stáhnout pdf (Strana 24)

THREE-POINT CALIBRATION

(Ratio Turbidity only)

To perform a three-point calibration, continue the procedure with the following steps:

• Remove the second standard cuvette.

• Place the 100 NTU standard cuvette (or the

third prepared formazin standard) into the holder,

with the cuvette mark aligned to the sign on the

instrument top.

• Close the lid and press the Read key. The display

will show the value blinking and the lamp icon

during measurement.

• At the end of the measurement, the fourth

proposed calibration point (750 NTU) is

displayed.

• At this moment it is possible to exit calibration

by pressing the End key.

• If the calibration is terminated, the display will

briefly show “Store...” and the three point

calibration is saved. The instrument returns in the

main screen.

FOUR-POINT CALIBRATION

(Ratio Turbidity only)

To perform a four-point calibration, continue the

procedure with the following steps:

• Remove the third standard cuvette.

• Place the 750 NTU standard cuvette (or the

fourth prepared formazin standard) into the holder,

with the cuvette mark aligned to the sign on the

instrument top.

• Close the lid and press the Read key. The

display will show the value blinking and the lamp

icon during measurement.

• At the end of the measurement, the fifth proposed

calibration point (2000 NTU) is displayed.

• At this moment it is possible to exit calibration

by pressing the End key.

• If the calibration is terminated, the display will

briefly show “Store...” and the four point

calibration is saved. The instrument returns in the

main screen.

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Hanna-instruments HI 88703 Uživatelský manuál Strana 24