MultiLab 4010-1W
Dissolved oxygen
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08/2018
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Salinity correction
When measuring the D.O. concentration [mg/l] of solutions with a salt content
of more than 1 psu, a salinity correction is required. For this, you have to mea-
sure and input the salinity of the measured medium first.
When the salinity correction is switched on, the [Sal] indicator is displayed in
the measuring screen.
Air pressure correc-
tion
(
DO % Saturation
local
function)
The integrated air pressure sensor of the MultiLab 4010-1W measures the
current air pressure.
During calibration, the air pressure correction function is automatically acti-
vated. While the parameter oxygen saturation [%] is displayed, the air pressure
correction is applied if the
DO % Saturation local
function is active.
The current air pressure is shown on the display when an IDS oxygen sensor
is connected.
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 9.5.3
, page 74) 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
enabled.
Hold function
You can switch the salinity correction on or off and enter the salinity
in the menu for calibration and measurement settings (see section
9.3.1 S
The air pressure correction (function
DO % Saturation local
) is
switched on or off in the menu for calibration and measurement set-
tings (see section 9.3.3 DO % S
1.
Freeze the measured value with
<AR>
.
The [HOLD] status indicator is displayed.
The HOLD function is active.
You can terminate the HOLD function and the
Stability control
func-
tion with
<AR>
or
<M>
at any time.
