22
• Place the
CAL Check
TM
Standard
HI96769‑11
Cuvette A into the cuvette holder and ensure
that the notch on the cap is positioned securely into the groove.
• Press
ZERO/CFM
and the lamp, cuvette and detector icons will appear on the display, depending
on the measurement phase.
• After a few seconds, the display will show
“-0.0-”
. The meter is now zeroed and ready for validation.
Use the validation procedure to ensure that the instrument is properly calibrated.
Warning:
Do not validate the instrument with any standard solutions other than the Hanna Instruments
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.
VALID
ATION PROCEDURE