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The reading should be within specifications as reported in the
CAL Check
™ Standard Certificate. If
the value is found out of the specifications, please check that the cuvettes are free of fingerprints,
oil or dirt and repeat validation. If results are still found out of specifications, then recalibrate the
instrument.
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 Instruments
CAL Check
™ Standards, otherwise erroneous results will be obtained.
When calibrating, only the selected range is affected.
• 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.
• Place the
CAL Check
™ Standard
Cuvette A into the cuvette holder and ensure that the notch
on the cap is positioned securely into the groove.
CALIBRA
TION PROCEDURE
3''