Lutron Electronics PH-222, Руководство пользователя

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3) Press the button, the display will show the following:
4) Press the Button to confirm your desire to delete data. The screen will now show you
Null and this confirms the memory is empty.
7. Replacement of Battery
1) When the display shows it is necessary to replace the batteries.
2) To replace the batteries, rotate and remove the battery cover (3-6, Front Panel Description).
Take out the depleted batteries and install 4 x AAA Alkaline Batteries ensuring correct
polarity.
3) After installing the batteries, refit the battery cover.
8. Replacement of pH Electrode
1) This meter features the ability to replace the electrode. The electrode
is the PE-12 and to remove the existing electrode unscrew the collar
from the meter as per Figure 2.
2) Position the new electrode with the aligning tab of the meter and fit it
to the meter. Screw the collar back on.
3) Rinse the new electrode in water and then insert it into the protection
cap.