Settings For Orp Measurements - wtw Multi 3410 Operating Manual

Multi 3410
Stability control
(AutoRead )
Criteria for a stable
measured value
Overview
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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 33) in the System
menu.
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
2 Using <MENU/ENTER>, activate the Stability control function
manually.
The [AR] status indicator appears while the measured value is
assessed as not stable. A progress bar is displayed and the
display of the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable
measured value is recognized. The progress bar disappears
and the display of the measured parameter stops flashing.
The current measurement data is output to the interface. Mea-
surement data meeting the stability control criterion is marked
by AR.
Note
You can prematurely terminate the Stability control function manually
with <MENU/ENTER> at any time. If the Stability control function is pre-
maturely terminated, the current measurement data are not output to
the interface.
3 Release the frozen measured value again with <AR> or <M>.
The [AR] status display disappears. The display switches back
to the previous indication.
The Stability control function checks whether the measured values are
stable within the monitored time interval.
Measured
parameter
ORP voltage
The minimum duration until a measured value is assessed as stable is
the monitored time interval. The actual duration is mostly longer.

4.7.3 Settings for ORP measurements

The following settings are possible for ORP measurements:
Time interval Stability in the time
interval
Δ mV: Better than 0.3
15 seconds
Operation
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