User Manual

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to alter the number. The upper right is month-day and the lower right is year.
(c) Press < MODE > key to enter into next parameter setting or press < ENTER > key to
conform and return to measuring mode.
4.4.6. Time setting (P5)
(a) Short press <MODE> key in mode P4 to enter into mode P5, see picture (4-6)
(b) Press < UNIT > key, the number will move rightward and flash, press < ▲ > or < ▼ >
key to alter the number.
(c) Press < MODE > key to enter into next parameter setting or press < ENTER > key to
confirm and return to measuring mode.
4.4.7. Restore to factory setting (P6)
(a) Short press <MODE> key in mode P5 to enter into mode P6, see picture (4-7)
(b) Press <▲> key to choose “ ”, indicating parameter setting has been restored
to the factory setting state. It will then return to measuring mode after 2s.
3.8 Special Notes:
4.5.1. *The 201T-F Plastic 3-in-1 Combination pH Electrode that comes with this meter
will NOT give accurate and stable pH readings when testing distilled or deionized water.
This is because these purified waters do not have enough ions present for the electrode to
function properly. To measure purified water pH levels, users need to use a specialized
electrode. Visit www.aperainst.com/electrodes and find the compatible Pure Water LabSen
electrode for your meter in order to accurately test purified waters.
4.5.2. After immerging the pH combination electrode into the solution, please stir the solution
briefly in order to remove air bubbles and obtain a faster response and stable measurement
value.