9408 Series Dissolved Oxygen Systems Datasheet

Reliable monitoring of dissolved oxygen levels in sewage treatment works is often hampered by fouling of the sensor with rags, or other large solids, present in the sample under test. These materials tend to become attached to the sensor and sensor holder giving rise to incorrect readings.

This problem is avoided by using the Model 9408 Floating Ball Dissolved Oxygen System, which comprises a flat-ended sensor mounted into a relatively large diameter spherical flotation collar. This form of construction presents to the sample a surface on which it is difficult for rags and other large solids to lodge. For more demanding applications, on-line cleaning is available using the water wash option.

The Floating Ball has been designed to operate in conjunction with the ABB Models 4640 and 4645 Dissolved Oxygen Transmitters and provides an easy-to-use, low-maintenance system for dissolved oxygen measurement.