Hanna-instruments HI 98703 Manual de usuario descargar pdf (Pagina 24)

• At the end of the measurement, the third

calibration point (100 NTU) is displayed on

the primary LCD, “CAL P.3” on the secondary

LCD, and “READ” tag will blink.

• At this moment it is possible to exit calibration

by pressing CAL. The instrument will memorize

the two-point calibration data and will return

to measurement mode.

THREE-POINT CALIBRATION

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

prepared formazin standard) into the holder,

with the cuvette mark aligned with the sign on

the instrument.

• Close the lid and press READ u. The display

will show blinking dashes and the icons for

cuvette, detectors and lamp will appear during

measurement.

• At the end of the measurement, the fourth

calibration point (750 NTU) is displayed on

the primary LCD and “CAL P.4” on the

secondary LCD.

• At this moment it is possible to exit calibration

by pressing CAL. The instrument will memorize

the three-point calibration data and will return

to measurement mode.

FOUR-POINT CALIBRATION

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

prepared formazin standard) into the holder,

with the cuvette mark aligned with the sign on

the instrument.

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Hanna-instruments HI 98703 Manual de usuario Pagina 24