Calibration
36
Waltron User Manual
9065 Luminescent Dissolved Oxygen Analyzer
15.
Press any key to return to the calibration menu.
16.
Scroll down to select Store Calibration.
Press Enter to save calibration. Note that
exiting this menu without storing calibration
will result in the calbration not being saved.
17.
After pressing Enter to save the calibration, a message will display on the screen
indicating that the save is in progress. This process will last approximately 1 minute.
18.
While the analyzer is storing the calibration result, it is now safe to turn off the flow of
calibration gas to the sensor.
19.
The screen will display a message saying that the Calibration has been stored
successfully, press any key.
20.
Press any key to return to the calibration menu.
21.
Select the back arrow to return to the
previous menu. Repeat until arriving at the
main measurement screen. The calibration
process is complete.
22.
Disconnect the calibration gas from the calibration beaker and remove the calibration
beaker from the sensor.
23.
Replace the flowcell on the sensor, again taking caution to prevent damaging the sensor
spot and temperature sensor.
24.
Reconnect sample lines and restore sample flow to the sensor.
25.
Press the Start button to put the analzer back into online measurement mode.
6.2.3
CALIBRATION WITH TWO GASES
Preparation:
Both the zero point and a high calibration point can be calibrated with a defined oxygen
concentration. The calibration gases must be dry.
The zero-point calibration should be carried out using a gas with a certified oxygen
content of ≤ 0.001%. The use of nitrogen or carbon dioxide with a purity of 99.9990%
(Class 5.0) is reccomended.
The high calibration point for the sensor must be calibrated with an accuracy of ± 1%