wtw Oxi 3315 Operating Manual page 25

Oxi 3315
Stability control
(AutoRead)
& HOLD function
ba75944e02 03/2012
When the salinity correction is switched on, the [Sal] indicator is displayed in
the measuring screen.
You can switch the salinity correction on or off and enter the salinity
in the menu for calibration and measurement settings (see section
6.1.1 S
ETTINGS FOR
CALIBRATION SETTINGS
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproduc-
ibility of measured values.
The measured parameter flashes on the display
 as soon as the measured value is outside the stability range
 when the automatic Stability control is switched off.
Irrespective of the setting for automatic Stability control (see section 6.2.3
A S
UTOMATIC TABILITY CONTROL
measurement with Stability control manually at any time.
1. Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
You can terminate the Stability control function and the HOLD func-
tion with <AR> or <M> at any time.
2. Using <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 mea-
sured 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. Measurement
data meeting the stability control criterion is marked by AR.
You can prematurely terminate the Stability control function manu-
ally with <ENTER> at any time. If the Stability control function is
prematurely terminated, the current measurement data are output
to the interface without the AutoRead info.
3. Using <ENTER>, start a further measurement with stability control.
or
Release the frozen measured value again with <AR> or <M>.
The [AR] status display disappears. The display switches back to the
previous indication.
D.O. (
SENSORS MENU OR MEASUREMENT AND
), page 33).
, page 35) in the System menu, you can start a
Dissolved oxygen
25