5
NOTE:
After calibrating pH4 or pH10 by long pressing
SET
button, there is a slope value show in pH block
in few seconds which stands for the electrodes conditions.
If the slope value is:
Slope Range
Description
Between 70%~130% First clean the electrode and then calibrate.
<70% or >130%
You need to change the electrode, it is no longer usable.
c) pH measurement (ATC, automatic Temperature):
NOTE: Without connecting ATC probe, the temperature value will display dashes
“
─
─
─
”
.
1) The pH electrode should be with ATC feature, and then immerse the sensing probe into the measurement
solution until the value is stable.
2) The main display will show the pH value, the bottom display will show the sensing Temp. value of the
measured solution (measured from ATC probe).
d) pH measurement (Manual Temp. compensation):
NOTE: This function is used for your pH electrode without connecting the ATC probe.
1) Power on the meter by short pressing
PWR
button.
2) Prepare the pH electrode, installing
the “probe plug” into the right “BNC port” of the meter.
3) Adjust the manual Temp. value by following steps:
Long pressing
UNIT
button, the meter default is
“
ntc 10k”
, short pressing
UNIT
button to select “
not”
type.
HOLD:
↑
to increase
ADJ:
↓
to decrease
SET:
←
to left digit
CAL:
→
to right digit
Long pressing
UNIT
again to save setting until screen shows “
SA
” and back to normal measurement mode.
4) Hold the Electrode Handle by hand and let the Sensing Head immersed wholly into the measured solution.
Stir gently and wait until the display be stabilized.
5) The main display will show the pH value, the bottom display will show the setting manual temperature.
e) pH convert to mV:
1) Under normal measurement mode, short pressing
MODE
button to toggle Cond. to mV measurement.
2) The display will show the mV value.
3) Short pressing
MODE
button again to return Cond. measurement.
ELECTRODE MAINTENANCE
Proper maintenance will ensure faster measurements, improve accuracy and extend the lifetime of
the electrode.
pH probe
When not in use
pH electrodes should be stored in pH electrode storage solution.
This insures that the electrode glass remains hydrated, ready to measure accurately and quickly. The
storage solution also helps keep the reference junction fully charged with KCl (Soaking solution).
NOTE: Storing pH electrodes in distilled or deionized water is not recommended.
User already use the electrode for a certain period
Whenever user can
not calibrate the meter properly or the meter’s reading value is not stable, please check
