ATI Q46D Dissolved Oxygen System Part 3 – Sensor Mounting
14
O&M Manual
Rev-N (4/21)
3.4 Sealed Flowcell
Applications where the sample inlet flow is well controlled can use a simpler sealed flowcell.
Using this flowcell requires that flow be controlled externally to about 400 cc/min. Variable flow
rate or variable pressure will cause unstable readings in this flowcell. ATI offers a special flow
control element that can be used ahead of this flowcell on the incoming sample line. The flow
control is part no. (55-0048). It will control the inlet flowrate at 400 cc/min. with inlet pressure
variations from 5-150 PSIG. A 50 micron y-strainer ahead of the flow control element is
recommended. The sealed flowcell provides a drain vent with check valve to avoid pulling a
vacuum on the flow chamber.
Figure 8 - Sealed Flowcell Dimensions
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