When the LCD display show " " ,
It is necessary to replace the battery. However, in-spec
measurement may still be made for several hours after
Low Battery Indicator appears before the instruments
instrument become inaccurate.
2)To replace the battery, rotate and remove the "
Battery Cover " ( 3-6, Fig. 1 ), take out the old
b
DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
3)When install the batteries, should make attention the
battery polarity.
4)After install the batteries, reinstall the battery cover
again.
8. REPLACEMENT OF pH ELECTRODE
1) Take away the pH electrode and change the
new unit, refer the Fig. 2 .
2) The pH electrode, PE-12 is the standard
accessory of the meter. However the PE-12 is
also the consumer parts, its life is depend Fig. 2
the working period and the maintenance.
3) Rinse the electrode in distilled water after
the usage.
4) " pH Electrode sensing head "
pH electrode
should insert into the PE-12
" Protection bottle " if the meter
is not used.
15
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