YSI TruLab pH 1110 - Manual (Page 18)

pH value TruLab pH 1110
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5 pH value
5.1 Measuring
5.1.1 Measuring the pH value
1. Connect the pH electrode to the meter.
2. When measuring without temperature sensor: Temper the test sample or
measure the current temperature.
3. If necessary, select the measured parameter (pH) with .
4. Immerse the pH electrode in the test sample.
The measured value is checked for stability (stability control).
The [AR] status display flashes.
5. When measuring without temperature sensor: Enter the temperature of
the buffer with <><>.
6. Wait for a stable measured value.
The [AR] display indicator no longer flashes.
Stability control (AutoRead )
During the measuring procedure, the stability control function is automatically
activated.
The stability control function (AutoRead) continually checks the stability of the
measured values in the monitored time interval. The stability has a consider-
able impact on the reproducibility of measured values. The [AR] display indi-
cator flashes until a stable value is measured.
To ensure the high measurement accuracy of the measuring sys-
tem, always measure with A current calibration (see section 5.2
C
ALIBRATION , page 19).
8 4 2
2 9 9 6
pH
°C
TP
AR