48
Outside Cal Range
feature warns the user if the current reading is
out of the calibrated area. The calibrated area is that part of the pH
range in which the calibration point assures an accurate reading. If
the reading is taken out of the calibration area, the “Outside Cal
Range” message will start blinking on the LCD. The calibrated area
is calculated in according with the pH resolution used during the
reading. To avoid having this message, the calibration points have to
be well distributed in the desired measurement range.
If measurements are taken successively in different samples, it is
recommended to rinse the electrode thoroughly with deionized
water or tap water and then with some of the next sample to
prevent cross-contamination and to condition the electrode before
immersing it into the sample solution.
The pH reading is affected by temperature. In order to measure the pH accurately, the temperature effect must
be compensated. To use the
Automatic Temperature Compensation
(ATC) feature, connect and submerge the
temperature probe into the sample as close as possible to the electrode and wait for a few seconds.
If the temperature of the sample is known,
Manual Temperature Compensation
(MTC) can be performed by
disconnecting the temperature probe.
Notes
: • When in MTC mode, the temperature can be modified by pressing
for
pH Measure mode and
for
mV/Rel mV Measure mode. The temperature value can be ajusted with
or
from –20.0 ºC to 120.0 ºC. Press
to save the new temperature value or press
to return to
Measure mode.
• When in ATC mode for pH, respectively TEMP for mV/Rel mV, “-----” will be displayed on the LCD if
the measured temperature is under or over temperature range (–20.0 ºC to 120.0 ºC).
69
0
1
2
3
4
5
6
7
8
9
0
8
1
9
.
1
2
1
9
.
1
5
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9
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1
9
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1
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1
7
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1
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1
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1
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1
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1
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2
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1
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1
7
1
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1
1
1
8
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1
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1
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1
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1
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1
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1
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1
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1
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1
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1
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1
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1
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1
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1
3
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1
8
4
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1
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3
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1
8
3
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1
4
3
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1
9
2
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1
4
2
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1
9
1
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.
1
5
1
6
.
1
0
1
6
.
1
5
0
6
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1
1
0
6
.
1
6
6
9
5
.
1
1
9
5
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1
7
8
5
.
1
2
8
5
.
1
8
7
5
.
1
3
7
5
.
1
9
6
5
.
1
4
6
5
.
1
0
6
5
.
1
5
5
5
.
1
7
1
5
5
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1
7
4
5
.
1
2
4
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1
8
3
5
.
1
4
3
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1
9
2
5
.
1
5
2
5
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1
1
2
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1
6
1
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1
2
1
5
.
1
8
8
0
5
.
1
4
0
5
.
1
0
0
5
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1
6
9
4
.
1
1
9
4
.
1
7
8
4
.
1
3
8
4
.
1
9
7
4
.
1
5
7
4
.
1
1
7
4
.
1
9
7
6
4
.
1
3
6
4
.
1
9
5
4
.
1
5
5
4
.
1
1
5
4
.
1
7
4
4
.
1
3
4
4
.
1
9
3
4
.
1
6
3
4
.
1
2
3
4
.
1
0
1
8
2
4
.
1
4
2
4
.
1
0
2
4
.
1
6
1
4
.
1
3
1
4
.
1
9
0
4
.
1
5
0
4
.
1
1
0
4
.
1
8
9
3
.
1
4
9
3
.
1
1
1
0
9
3
.
1
7
8
3
.
1
3
8
3
.
1
9
7
3
.
1
6
7
3
.
1
2
7
3
.
1
9
6
3
.
1
5
6
3
.
1
2
6
3
.
1
8
5
3
.
1
2
1
4
5
3
.
1
1
5
3
.
1
7
4
3
.
1
4
4
3
.
1
1
4
3
.
1
7
3
3
.
1
4
3
3
.
1
0
3
3
.
1
7
2
3
.
1
3
2
3
.
1
3
1
0
2
3
.
1
7
1
3
.
1
3
1
3
.
1
0
1
3
.
1
7
0
3
.
1
3
0
3
.
1
0
0
3
.
1
7
9
2
.
1
4
9
2
.
1
0
9
2
.
1
4
1
7
8
2
.
1
4
8
2
.
1
1
8
2
.
1
8
7
2
.
1
4
7
2
.
1
1
7
2
.
1
8
6
2
.
1
5
6
2
.
1
2
6
2
.
1
9
5
2
.
1
5
1
6
5
2
.
1
3
5
2
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1
9
4
2
.
1
6
4
2
.
1
3
4
2
.
1
0
4
2
.
1
7
3
2
.
1
4
3
2
.
1
1
3
2
.
1
8
2
2
.
1
6
1
5
2
2
.
1
2
2
2
.
1
9
1
2
.
1
6
1
2
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1
4
1
2
.
1
1
1
2
.
1
8
0
2
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1
5
0
2
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1
2
0
2
.
1
9
9
1
.
1
7
1
6
9
1
.
1
3
9
1
.
1
1
9
1
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1
8
8
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1
5
8
1
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1
2
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1
9
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1
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1
7
7
1
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1
4
7
1
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1
1
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1
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1
8
1
8
6
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1
6
6
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1
3
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1
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6
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1
7
5
1
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1
5
5
1
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1
2
5
1
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1
9
4
1
.
1
7
4
1
.
1
4
4
1
.
1
9
1
1
4
1
.
1
9
3
1
.
1
6
3
1
.
1
4
3
1
.
1
1
3
1
.
1
8
2
1
.
1
6
2
1
.
1
3
2
1
.
1
1
2
1
.
1
8
1
1
.
1
0
2
6
1
1
.
1
3
1
1
.
1
1
1
1
.
1
8
0
1
.
1
5
0
1
.
1
3
0
1
.
1
1
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1
.
1
8
9
0
.
1
6
9
0
.
1
3
9
0
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1
1
2
1
9
0
.
1
8
8
0
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1
6
8
0
.
1
3
8
0
.
1
1
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0
.
1
9
7
0
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1
6
7
0
.
1
4
7
0
.
1
1
7
0
.
1
9
6
0
.
1
2
2
7
6
0
.
1
4
6
0
.
1
2
6
0
.
1
0
6
0
.
1
7
5
0
.
1
5
5
0
.
1
3
5
0
.
1
1
5
0
.
1
8
4
0
.
1
6
4
0
.
1
3
2
4
4
0
.
1
1
4
0
.
1
9
3
0
.
1
7
3
0
.
1
5
3
0
.
1
2
3
0
.
1
0
3
0
.
1
8
2
0
.
1
6
2
0
.
1
4
2
0
.
1
4
2
1
2
0
.
1
9
1
0
.
1
7
1
0
.
1
5
1
0
.
1
3
1
0
.
1
1
1
0
.
1
8
0
0
.
1
6
0
0
.
1
4
0
0
.
1
2
0
0
.
1
5
2
0
0
0
.
1
8
9
9
.
0
6
9
9
.
0
4
9
9
.
0
2
9
9
.
0
0
9
9
.
0
7
8
9
.
0
5
8
9
.
0
3
8
9
.
0
1
8
9
.
0
6
2
9
7
9
.
0
7
7
9
.
0
5
7
9
.
0
3
7
9
.
0
1
7
9
.
0
9
6
9
.
0
7
6
9
.
0
5
6
9
.
0
3
6
9
.
0
1
6
9
.
0
7
2
9
5
9
.
0
7
5
9
.
0
5
5
9
.
0
3
5
9
.
0
2
5
9
.
0
0
5
9
.
0
8
4
9
.
0
6
4
9
.
0
4
4
9
.
0
2
4
9
.
0
8
2
0
4
9
.
0
8
3
9
.
0
6
3
9
.
0
4
3
9
.
0
3
3
9
.
0
1
3
9
.
0
9
2
9
.
0
7
2
9
.
0
5
2
9
.
0
3
2
9
.
0
9
2
1
2
9
.
0
0
2
9
.
0
8
1
9
.
0
6
1
9
.
0
4
1
9
.
0
2
1
9
.
0
1
1
9
.
0
9
0
9
.
0
7
0
9
.
0
5
0
9
.
0
0
3
3
0
9
.
0
2
0
9
.
0
0
0
9
.
0
8
9
8
.
0
6
9
8
.
0
5
9
8
.
0
3
9
8
.
0
1
9
8
.
0
9
8
8
.
0
8
8
8
.
0
1
3
6
8
8
.
0
4
8
8
.
0
3
8
8
.
0
1
8
8
.
0
9
7
8
.
0
7
7
8
.
0
6
7
8
.
0
4
7
8
.
0
2
7
8
.
0
1
7
8
.
0
2
3
9
6
8
.
0
7
6
8
.
0
6
6
8
.
0
4
6
8
.
0
3
6
8
.
0
1
6
8
.
0
9
5
8
.
0
8
5
8
.
0
6
5
8
.
0
4
5
8
.
0
3
3
3
5
8
.
0
1
5
8
.
0
0
5
8
.
0
8
4
8
.
0
6
4
8
.
0
5
4
8
.
0
3
4
8
.
0
2
4
8
.
0
0
4
8
.
0
9
3
8
.
0
4
3
7
3
8
.
0
5
3
8
.
0
4
3
8
.
0
2
3
8
.
0
1
3
8
.
0
9
2
8
.
0
8
2
8
.
0
6
2
8
.
0
5
2
8
.
0
3
2
8
.
0
5
3
2
2
8
.
0
0
2
8
.
0
9
1
8
.
0
7
1
8
.
0
6
1
8
.
0
4
1
8
.
0
3
1
8
.
0
1
1
8
.
0
0
1
8
.
0
8
0
8
.
0
Table for non-linear temperature compensation: