12
GENERAL OPERA
TIONS
5. Insert the
HI97770B
CAL Check Cuvette B then press
Next
to continue. The
“
Please wait...
“
message will be displayed during the measurement.
6. When the CAL Check is complete the display will show one of the following
messages and the value obtained during the measurement:
•
“PASSED“
: The measured value is within the accuracy specification, no user
calibration is required.
•
“OUT OF SPECIFICATION“
and
Calibrate
is available: The measured value
is near the expected value. To update the user calibration press
Calibrate
. Press
Accept
to confirm or
Cancel
to return to the previous screen.
•
“OUT OF SPECIFICATION“
: A user calibration is not allowed, the measured
value is outside of the tolerance window. Check the certified value, expiration date
and clean the outside of the cuvette. Repeat the CAL Check procedure. If this error
continues, contact your nearest Hanna Instruments Customer Service Center.
6.2. CHEMICAL FORMULA & UNIT CONVERSION
Chemical formula and unit conversion factors are pre-programmed into the instrument.
In order to view the displayed result in the desired chemical formula enter menu by
pressing
and use the functional keys to select
Chemical Form
. Press
Select
to change the displayed chemical formula. Use the functional keys to highlight the
desired chemical formula and press
Select
. The selected formula will be saved when
the instrument is powered off.
