Xylem PH3210 FIELD PH METER - Manual (Page 28)

Operation pH 3210
28 ba75793e02 12/2008
4.4.2 Measuring the pH value
Stability control
(AutoRead )
The stability control function (AutoRead) continually checks the stability
of the measurement signal. The stability has a considerable impact on
the reproducibility of measured values. The display of the measured
parameter flashes until a stable measured value is available.
You can start the Stability control manually at any time, irrespective of
the setting for automatic Stability control (see page 26) in the System
menu.
Note
You can prematurely terminate the Stability control function manually
with at any time.
1 Perform the preparatory activities according to section 4.4.1.
2 Immerse the pH electrode in the test sample.
3 Select the pH or mV display with .
pH
6.949
24.8 °C
22.09.2008
08:00
Menu
1 Freeze the measured value with .
The [HOLD] status indicator is displayed.
2 Using , activate the Stability control function
manually.
The [AR] status indicator appears while the measured value is
assessed as not stable. The display of the measured
parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable
measured value is recognized.
3 Release the frozen measured value again with or .
The [AR] status display disappears. The display switches back
to the previous representation.