Hach 3650 manual Storage When not Used, Flow Chamber

12 of 50 Installation - 3650 Portable O2 Analyzer

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.

1.6.4Flow 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.

ORBISPHERE Operator Manual