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6.6.4 Temperature unit
˚C/˚F setting (P4)
(a) Short press in P3 to enter P4, see picture (4-5).
(b) Press or to choose temperature unit: ˚C or ˚F.
(c) Press to enter next parameter setting or press to confirm
and return to measurement mode.
6.6.5 Backlight display time setting (P5)
(a) Short press in P4 to enter P5, see picture (4-6).
(b) Press or to choose the time of backlight auto off: 0 min, 1
min, 3 min or 6 min. The backlight will be closed if choosing 0 min.
(c) Press to enter next parameter setting or press to confirm
and return to measurement mode.
(d) The factory default setting for P5 is 1min.
6.6.6 Auto power off time setting (P6)
(a) Short press in P5 to enter P6, see picture (4-7).
(b) Press or to choose the time: 0min, 10min or 20min. The
auto power off function will be closed if choosing 0min.
(c) Press to enter next parameter setting or press to confirm
and return to measurement mode.
(d) The factory default setting for P6 is 10min.
6.6.7 Restore to factory default setting (P7)
(a) Short press in P6 to enter P7, see picture (4-8).
(b) Press or to choose , meaning that the parameters
have been restored to the producer setting mode, and return to
measurement mode after 2 seconds. Returning to factory default setting
is to restore the meter to theoretical value (zero potential pH is 7.00, slope
is 100%), and set all the parameters to default settings. When the meter’s calibration or measurement is
performing abnormally, users can use this function, and then calibrate and test again. Please note that
this function is irreversible once used.
6.7
Cleaning pH Electrode
1)
The measurement is only as accurate as the electrode is clean. Always thoroughly rinse off the
electrode before and after each test with pure water.
