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Appendix E - EOLUM Probe Setup and calibration
To correctly use the dissolved oxygen (fluorescence membrane) probe perform calibration as described.
At first start-up, sensor calibration is required in order to the measuring system to be able to generate accurate
measuring values. The slope calibration of the oxygen sensor can be performed in air, saturated water or using a
reference solution.
Calibration in AIR.
Calibration in air is only possible if air temperature is
≥
-5 °C (
≥
23 °F). From calibration menu choose “Calib Chxx
LDO”. Choose “RANGE” to setup reading scale. Choose “AIR” as calibration method. Remove sensor from the
medium and dry completely. Leave it in air. Start calibration by clicking on “START”. Reading value is real time
displayed on upper screen side. 600s means how many seconds are left until the end of procedure. Move cursor on
“OK” when “CALIBRATION OK” message appears. If an error message appears repeat procedure.
Calibration in air saturated WATER.
From calibration menu choose “Calib Chxx LDO”. Choose “RANGE” to setup visulization scale. Choose “WATER” as
calibration method. Dip head’s probe into water. Start calibration by clicking on “START”. Reading value is real time
displayed on upper screen side. Time shown is how many seconds are left to the end of procedure. Move cursor on
“OK” when “CALIBRATION OK” message appears. If an error message appears repeat procedure.
Calibration using a REFERENCE solution.
From calibration menu choose “Calib Chxx LDO”. Choose “RANGE” to setup visulization scale. Choose “REF” as
calibration method. Dip sensor’s probe into reference solution. Start calibration by clicking on “START”. Reading
value is real time displayed on upper screen side. Time shown is how many seconds are left to the end of procedure.
Move cursor on “OK” when “CALIBRATION OK” message appears. If an error message appears repeat procedure.
Probe’s temperature sensor calibration.
Temperature calibration needs an external thermometer to match probe’s reading value.
From “Calib CHxx LDO menu, move wheel on “Temp”, press wheel to enter system temperature obtained from a ther
-
mometer. Press wheel to confirm then move cursor on “OK” and press wheel. End procedure by moving cursor on “Exit”
from “Temp” main menu and press it. If an error occurred during calibration procedure then the instrument will show an
error message and will ask to proceed to a new calibration, cancel current operation or restore default settings.
To restore probe’s calibration parameters to factory values select “FACTORY DEFAULT” within “Default” menu.
Power cycling off then on the instrument to properly save probe new calibration values.
Summary of Contents for MAX5
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