20
21
• Remove the cuvette.
• Place the specific
CAL CHECK
TM
Standard
Cuvette B into the cuvette holder, for:
Hardness:
B
,
HI 96719-11
or
Iron LR:
B
,
HI 96741-11
• Ensure that the notch on the cap is
positioned securely into the groove.
• Press
READ/ /TIMER
and the lamp,
cuvette and detector icons will appear on
the display, depending on the
measurement phase.
• After measurement the instrument will
show for three seconds the
CAL CHECK
TM
Standard value.
Note:
If the display shows
“STD HIGH”
, the
standard value was too high. If the
display shows
“STD LOW”
, the
standard value was too low. Verify
that both
CAL CHECK
TM
Standard
Cuvettes, A and B are free from
fingerprints or dirt and that they are
inserted correctly.
• Then the date of the last calibration (e.g.:
”01.08.2009”
) appears on the display,
or
“01.01.2009
if the factory calibration
was selected before. In both cases the
year number is blinking, ready for date
input.
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.
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.
• To change the range, simply press
RANGE/GLP/ .
• 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 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 calibration. The blinking
“READ”
asks for reading calibration
standard.
