24
Automatic Calibration in Water
The slope is corrected using the saturation value (100 %) related to air
saturation.
During calibration the module is in function check (HOLD) mode.
Current outputs and relay contacts of the module behave as configured
(BASE module).
NOTICE!
Ensure sufficient medium flow to the sensor (see Specifications of dissolved
oxygen sensors)! The calibration medium must be in equilibrium with air.
Oxygen exchange between water and air is very slow. Therefore, it takes a
relatively long time until water is saturated with atmospheric oxygen.
If there is a temperature difference between calibration medium and measured
medium, the sensor must be kept in the respective medium for several minutes
before and after calibration.
Menu Display
Select calibration mode
Select “Module OXY 3400-067”
The module is in HOLD mode.
Current outputs and relay contacts
behave as configured (BASE).
Press
enter
to confirm.
Select “Automatic - Water” calibration
method
Remove sensor and immerse it in cal
medium (air-saturated water), ensure
sufficient medium flow to the sensor.
Press
enter
to confirm.
Calibration
Return
25.6°C
Module PH 3400-032
Module CONDI 3400-051
Info
80.3%Air
Module OXY 3400-067
Module OXY 3400-067
Return
25.6°C
Automatic - Air
Data entry
Product calibration Sat
Zero correction
80.3%Air
Automatic - Water
Calibration / Adjustment
Automatic Calibration in Water
N
ot
e:
T
he displa
y ma
y v
ar
y depending on the devic
e v
ersion.
