09
PHscan20
Enter
Rinse
the
electrode
with
distilled
water,
ait for the measured value to stabilize, the
display shows electrode slope and “END”. The tester returns to the pH
measurement mode. Calibration is completed.
EXIT THE CALIBRATION:
During
the
calibration,
if
you
want
to
exit
calibration
mode,
press
MEAS
key.
The tester will immediately return to measurement mode.
—
dip the electrode into the pH10.01
(or pH9.18) standard buffer solution.
—
Press
ENTER
key
to
confirm.
W
pH Measurement
Rinse
the
electrode
thoroughly
with
distilled
water,
ait for the
to stabilize, record
1.
press MEAS key to turn
on the tester.
2. Dip the electrode into the sample solution, stir the tester gently.
3. W
reading
the measured value on the display.
Auto-Hold Function
When
the auto-hold
function is enabled,
the
tester
will
automatically sense a
stable
end-point
measured
value
and
freeze it,
“HOLD”
indicator will appear on
the display. Press HOLD key, the tester resumes measuring.
Manual Hold Function
1. During
the measurement, press HOLD key,
,
“HOLD”
indicator
will
appear
on the display.
2. Press key again to
release the measured reading,
you
can
continue to take
measurement.
Electrode Care and Maintenance
—
For best results, please always keep the sensor’s glass bulb wet.
—
Ensure
that
the
sensor
is
thoroughly
washed
with
distilled
water
after
each
use.
the tester immediately freezes
currently displayed value
PHscan20
10
Hold
Meas
—
If
you do not use
the tester for long periods, please store the sensor with
electrode storage solution. DO NOT use de-ionized or distilled water.
Electrode Replacement
When
the
tester fails
to calibrate or gives
fluctuating readings for calibration
standards, you need to replace the electrode module.
1. Twist the electrode collar counter clockwise,
pull the old electrode module
away from the tester.
2. Align the slot on the new electrode
module,
gently
push
the
module
into
the
tester.
3. Twist the electrode
collar
clockwise until it is tight.
Troubleshooting
Installation
is
completed.
Slot
—
Electrode dried out.
Soak the
electrode
in
tap
water
for
10
minutes.
—
Measured value is out of range.
Check the electrode whether clogged, dirty or broken.
module
—
Incorrect buffer used or contaminated buffer solution.
Use fresh pH buffer solutions for calibration.
—
Electrode is broken.
Replace the electrode
.
module
LCD DISPLAY
CAUSE
—
Keypad is not working properly.
Replace the batteries.
