20
CALIBRA
TION PROCEDURE
• 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
TM
Standard
HI96747‑11
Cuvette A into the cuvette holder and ensure
that the notch on the cap is positioned securely into the groove.
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. For accurate calibration, please
perform test at room temperature: 18 to 25 °C (64.5 to 77.0 °F).
3''
