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The inside of the 9065 must be dry during calibration with a gas. Rinse the 9065 for
approx. 15 minutes with N
process, the % unit or the % a.s. unit must be used. Since the oxygen sensor measures the
oxygen partial pressure, the oxygen content measured in the gas during the calibration
process depends on the atmospheric pressure.
The manually entered atmospheric pressure in the "P-atm" parameter in the "Calibration"
menu is taken into consideration when determining the oxygen content in the % O
and the % a.s. unit.
NOTE:
Procedure:
1. Put analyzer into standby mode by pressing the Start button.
2. Turn off sample flow to the sensor and disconnect sample inlet and outlet tubings from
the sensor flowcell.
3. Remove the flowcell by loosening the knurled nut. Take care not to damage the sesnor
spot and temperature sensor while removing the flowcell.
4. Install the calibration beaker onto the bottom
of the sensor.
5. Connect calibration gas to the inlet of the calibration beaker.
6. Turn the calibration gas flow on at a maximum flowrate of 30 l/h and let the gas dry the
sensor for 15 minutes.
7. Hold enter for 3 seconds to display main menu
8. Select User and then password to enter the supervisor level password 6848.
Waltron User Manual
9065 Luminescent Dissolved Oxygen Analyzer
, CO
or oil-free compressed air. During the calibration
2
2
For an accurate O
calibration, the sensor must be at the
2
same temperature as the gas. To achieve this, allow the
sensor and calibration gas to acclimatize for 4 hours in the
same room.
Calibration
unit
2
34
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