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• At the end of the reading, the fourth calibration
point (800 FTU) 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 (<0.1, 15.0 and 100 FTU) calibration data and will return to
measurement mode.
or
• Remove the 100 FTU standard cuvet from the
meter and insert the 800 FTU standard cuvet
into the holder.
• Close the lid and press READ . “----” and the
“LED 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 prevent
taking measurements in a range where the calibration
do not assure the best results. The range where the
calibration assures correct measurements is up to 40 FTU
for a two-point calibration and up to 150% of the third
point value for a 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.
100
FTU
800
FTU
