Hanna Instruments HI 83749 - Manual (Page 14)

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• Remove the 100 NTU standard cuvet from the
meter and insert the 500 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 measurement, the four-point
calibration is completed and the instrument
returns automatically to measurement mode.
OUT CAL RANGE FUNCTION
The instrument has an Out Cal Range function to
alert the user (with “cal” blinking message) when
a measurement is made outside of the calibration
range.
CALIBRATION ERRORS
• If the read value during calibration is too far
from the set value, the instrument will show
“-LO-” or “-HI-” error.
• If the calculated calibration coefficients are off
specifications, the “CAL Err” message is
displayed.
or
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• Press GLP to enter or exit GLP data consulting.
Several functions are available when in GLP
menu.
Press READ to scroll through the GLP data.
The following GLP panels can be viewed.
• The last calibration date, in YYYY.MM.DD
format. If no calibration was performed, the
factory calibration message, “F.CAL”, will be
displayed on the LCD.
• The time of the last calibration in hh:mm format.
• First calibration point: 0.00 NTU if skipped or
the actual read value (e.g. 0.01 NTU).
• Second calibration point.
• The instrument asks for confirmation. Press the
LOG/CFM key to confirm all records are deleted.
To abort the delete function, press READ
instead of LOG/CFM.
• After all records are deleted the instrument
returns to measurement mode.
The GLP feature allows the user to view last calibration data. Also the user calibration can be deleted.
or
or
GOOD LABORATORY PRACTICE (GLP)