AC Infinity AC-PHM3, Руководство пользователя

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17
The 1 st point calibration must be 7.00 pH. Perform the 2 nd and 3 rd point calibrations (4.00,
10.01, 1.68, or 12.45) after the 1
st
point calibration is complete. DO NOT turn off your pH
meter before your calibrate the 2 nd and 3 rd points. Otherwise you will need to restart the
calibration process with 7.00 pH first.
A.
Er2 will appear when the calibration button is pressed while the calibration process is
incomplete (smile icon does not appear on the screen). B.
The included pH 4.00 and 7.00 buffer solutions can be used for up to 10 calibrations. After
use, tightly close the bottle and store it at room temperature. pH 10.01 can only be used for up
to 5 times as it will lose its accuracy much faster. Replace the solutions after their designated
uses to help keep your pH measurements reliable. C.
This pH meter will automatically recognize the pH buffer solution it is in. For details, refer to
the following table:
D.
CALIBRATION NOTES
1 st pt: 7.00 pH
2
nd
pt: 4.00 pH or 1.68 pH
3 rd pt: 10.01 pH or 12.45 pH
1 st pt: 6.86 pH
2
nd
pt: 4.01 pH or 1.68 pH
3 rd pt: 9.18 pH or 12.45 pH
USA Series NIST Series*
1 st pt: 7.00 pH
2
nd
pt: 10.01 pH
or 12.45 pH
1
st
pt: 7.00 pH
2 nd pt: 4.00 pH
or 1.68 pH
Option B
Option A
B
A
1 st pt: 6.86 pH
2
nd
pt: 9.18 pH
or 12.45 pH
1
st
pt: 6.86 pH
2 nd pt: 4.01 pH
or 1.68 pH
7.00 pH
Range: 7.00 pH
Recommended
Range > 7.00 pH
Range < 7.00 pH
Required Accuracy
≥
0.1 pH
2-Point
3-Point
Calibration
1-Point 6.86 pH
Indication
*NIST solutions sold separately