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• Press
CAL CHECK
TM
and the lamp, cuvet
and detector icons together with “CAL
CHECK” will appear on the display,
depending on the measurement phase.
• At the end of the measurement the display
will show the validation standard value.
The reading should be within specifications as reported in the
CAL CHECK
TM
Standard
Certificate. If the value is found out of the specifications, please check that the cuvets are free
of fingerprints, oil or dirt and repeat validation. If results are still found out of specifications,
then recalibrate the instrument.
CALIBRATION PROCEDURE
Note:
It is possible to interrupt calibration procedure at any time by pressing
CAL CHECK
or
ON/OFF
keys.
Warning
: Do not calibrate the instrument with standard solutions other than the HANNA
CAL
CHECK
TM
Standards, otherwise erroneous results will be obtained.
For accurate validation, please
perform test at room temperature: 18 to 25°C (64.5 to 77.0°F)
• Turn the meter on by pressing
ON/OFF
.
• When the beeper sounds briefly and the
LCD displays dashes, the meter is ready.
• Press and hold
CAL CHECK
for three
seconds to enter
calibration mode
. The
display will show
“CAL”
during
calibration procedure. The blinking
“ZERO”
asks for instrument zeroing.
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