25
OUT CAL RANGE FUNCTION
The instrument has an
Out Cal Range
function to prevent taking measurements in a range where the
calibration does not assure the best results. The range where the calibration assures correct
measurements is up to 40 NTU for two-point calibration and up to 150% of the third point value
for three-point calibration.
The display will show a blinking “
CAL
” tag each time the measurements are taken outside 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
outside a certain range, the “
CAL Err
” message
is displayed.
CALIBRATION DELETION
HI 98703
is factory calibrated. It is possible to
restore factory calibration by deleting last performed
calibration.
To delete last calibration, follow the next steps:
• Enter the GLP feature by pressing
GLP
s
. The
date of the last calibration will be displayed
on the LCD.
• Press
READ
u
to see the information related
to calibration. The last panel is the one with
delete calibration.
• Press
SETUP/DEL
to delete the current
calibration. After deletion the instrument will
automatically return to measurement mode.
• 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 four-point
calibration is completed and the instrument
returns automatically to measurement mode.
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