Ph Calibration Procedures - Lutron Electronics PPH-2108 Operation Manual

Note : During the Display show above " CAL " text,
before to reset the usage hours, the user can no
execute the normal function setting.
3)After finish the PCPS value setting, press the
" Set Button " ( 3-4, Fig. 1 ) again, the " Display "
will return to normal measurement screen and finish
the " 2nd layer setting procedures ".

5. pH CALIBRATION PROCEDURES

5-1 Preparation and consideration of pH calibration
1)Prepare the
a. " pH 7 buffer solution " ( optional, such as PH-07. PH-07A )
b. " pH 4 buffer solution " ( optional, such as PH-04. PH-04A )
2)The complete calibration procedures should be
executed by both buffer solution :
a. " pH 7 buffer solution "
b. " pH 4 buffer solution "
3)It should be calibrated under the " pH 7 buffer
solution " at first, then calibrated under the
" pH 4 buffer solution " following.
5-1 pH calibration ( without ATC probe )
1)Power on the meter, immerse the pH electrode
into the standard " Buffer 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 "/
Solution Temp. adjustment
Follow the text " CAL " , the display will show the existing
manual Temp. value with flashing, at the same time
" SV indicator " ( 3-3, Fig. 1 ) and the " Temp. indicator "
( 3-11 ) will light.
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