5-5 ORP calibration
1)Prepare the ORP electrode ( optional, ORP-14 ), connect
the ORP electrode to the meter.
2)Power on the meter, set the mode and the function
to " mV ", refer chapter 5-3, page 14.
3)Immerse the sensing head of ORP electrode into the
ORP standard buffer solution, the up display will
show the ORP value in mV.
4)Use the two fingers to press the " REC Button " ( 3-4,
Fig 1 ) and " HOLD Button " ( 3-3, Fig. 1 ) at the
same time. The display will show the following screen
as example, then release the both fingers.
OrP
CAL
5)Use " Button " ( 3-9, Fig. 1 ), " Button " ( 3-10,▲▼
Fig. 1 ) to adjust the up display value exact same as
the standard ORP buffer solution value. Press the
" Enter Button " will save the calibration the data
and finish the calibration procedures.
* The ORP calibration procedures are available
only the ORP buffer solution value is > 100 mV.
* If the ORP calibration procedures is less than
100 mV the calibration is not allow.
18
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