VWR MD 8000 L, Руководство по эксплуатации

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Dissolved oxygen MD 8000 L
42
ba77218e01 11/2018
Air pressure
correction
( Saturation, local
function)
The integrated air pressure sensor of the MD 8000 L measures the current air
pressure. During calibration, the air pressure correction function is automati-
cally activated. While the parameter oxygen saturation [%] is displayed, the air
pressure correction is applied if the
Saturation, local function is active.
Stability control
(AutoRead)
& HOLD function
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 11.6.3
A
UTOMATIC
S
TABILITY CONTROL
, page 70) in the System menu, you can start a
measurement with Stability control manually at any time.
To start the Stability control function manually, the HOLD function must be
active.
Hold function
Stability control
The air pressure correction (function Saturation, local ) is switched
on or off in the menu for calibration and measurement settings (see
section 11.3.1 S
ETTINGS FOR
D.O.
SENSORS
(
MENU FOR MEASURE
-
MENT AND CALIBRATION SETTINGS
), page 64).
1. Freeze the measured value with
<HOLD>
.
The [HOLD] status indicator is displayed.
The HOLD function is active.
You can terminate the HOLD function and the Stability control func-
tion with
<HOLD>
or
<MODE>
at any time.
2. Using
<OK>
, 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, the display of the mea-
sured parameter stops flashing and a beep sounds.
The current measurement data is output to the interface. Measurement
data meeting the stability control criterion is marked by AR.