Lutron Electronics PPH-2108 Operation Manual page 19

When change the new pH electrode, it recommend
that to execute the " SYSTEM RESET " at first,
refer to page 19.
5-2 pH calibration ( with ATC probe )
1)Power on the meter, immerse the above pH electrode
and the Temp. probe into the measuring solution.
The " Display " ( 3-1, Fig. 1 ) will show the pH value
of the Buffer solution.
2)Use the two fingers to press " Set Button " ( 3-4, Fig. 1 )
and " Button " ( 3-6, Fig. 1 ) continuously at the
▲
same time until the " Display " show the text " CAL ",
then present the Temp. value with flashing that
sensing from the Temp. probe ( ATC probe ), after
few seconds ( about 5 seconds ) the Display will change
to the pH value 7.00 or 4.00 with flashing,
* Use the pH 7 buffer solution, it will show 7.00
* Use the pH 4 buffer solution, it will show 4.00
at the same time " SV indicator " ( 3-3, Fig. 1 ) and
the " pH indicator " ( 3-10 ) will light.
* If the aim calibration value is pH 7.00 ( 4.00 )
exactly, then wait about 5 seconds the meter will
entry the calibration value and finish the pH
calibration procedures , the Display will return to
normal screen, the " PV indicator " ( 3-2, Fig. 1 ) will
on, the " SV indicator " ( 3-3, Fig. 1 ) will off.
* If the aim calibration value is not pH 7.00 ( 4.00 )
exactly, during the Display flashing, use the " ▼
Button " ( 3-5, Fig. 1 ) and the "
Fig. 1 ) to adjust Display until it reach to the pH
value of " Buffer solution ", then press " Set Button "
( 3-4, Fig. 1 ) to entry calibration data. The Display
will return to normal screen, the " PV indicator "
( 3-2, Fig. 1 ) will On, the " SV indicator " ( 3-3, Fig. 1 )
will off.
Button " ( 3-6,
▲
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