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12 of 50 Installation - 3650 Portable O2 Analyzer
Operator Manual
ORBISPHERE
You will get a better look at all these components during your first sensor service. Before
making a measurement, check the sensor head to see that:
• The membrane mounting ring is firmly in place,
• The membrane surface is smooth and wrinkle-free,
• The electrolyte beneath the membrane is free of bubbles, and
• The electrodes appear clear, clean and bright.
1.6.4 Flow Chamber
The model 32007F flow chamber's inlet and outlet should be free of any obstructions.
Regulate the sample flow using the adjustment knob on top of the flow chamber. When
switching from liquid to gaseous samples, ensure that the sensor membrane is dry.
Ensure that the gas from the exit tube of the flow chamber (in gaseous mode) is released
at atmospheric pressure and that it is constant.
1.7 Storage When not Used
At the end of the workday, run clean water through the flow chamber to prevent
passageways from clogging. You may wish to repeat preconditioning (see
“Preconditioning Sensor” on page 15) prior to the next use.
If you do not expect not to use your sensor for more than a few months, you should clean
the sensor as instructed in the EC Sensors - Maintenance & Installation Manual and
then store it dry, without electrolyte, and with the calibration cap in place for protection.