Hanna Instruments HI 83749 - Manual (Page 13)

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• Remove the <0,10 NTU standard cuvet and
place the 15.0 NTU standard cuvet into the
holder.
• Close the lid and press READ . “----” and the
“Lamp and Read Status” indicator will blink
again while making the reading.
• At the end of the reading, the third calibration
point (100 NTU) and “CAL P.3” is displayed. If
desired, the value can be changed using the
UP or DOWN keys.
Note: At this moment it is possible to exit
calibration by pressing CAL/RCL. The instrument
will memorize the two-point (<0.10 and 15.0
NTU) calibration data and will return to
measurement mode.
• Remove the 15.0 NTU standard cuvet from the
meter and place the 100 NTU standard cuvet
into the holder.
• Close the lid and press READ . “----” and the
“Lamp and Read Status” indicator will blink
again while making the reading.
• At the end of the reading, the fourth calibration
point (500 NTU) and “CAL P.4” is displayed. If
desired, the value can be changed using the
UP or DOWN keys.
Note: At this moment it is possible to exit
calibration by pressing CAL/RCL. The instrument
will memorize the three-point (<0.10, 15.0
and 100 NTU) calibration data and will return
to measurement mode.
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• Third calibration point (if available).
• Fourth calibration point (if available).
• Delete calibration panel.
To delete calibration:
• Press SETUP/DEL when the instruments displays
the “Delete calibration” panel.
The user calibration will be deleted and the factory
calibration will be restored. The instrument will
enter automatically in idle mode.