Hach-Lange POLYMETRON 9500 Contacting Conductivity Sensors User Manual - Manual (Page 6)

• B: Good - satisfactory immersion of the electrode surfaces and good sample flow.
• C: Poor - incomplete immersion of the electrodes or incorrect sample flow.
On piping
Immerse the internal electrode completely in the process sample.
Note: In the following illustrations, the arrows indicate the sample flow direction.
Figure 2 Model 8315 sensor mounting example
Figure 3 Model 8394 sensor mounting example
The 8394 sensor installs perfectly in a Tri-Clover ® Tri-Clamp ™ Tee starting from 1.5 inch diameter
(A), and also at a 90° angle starting from 2 inches (B). All Tri-Clamp ™ Tees are in compliance with
3A standards for CIP (cleaning In place).
In a bypass
Polymetron flow chambers are designed not to retain air bubbles. To facilitate the extraction of
bubbles, use a minimum flow rate of 20 L/h (ideally 60 L/h).
Note: The progressive accumulation of bubbles on the surface of the sensor reduces the active surface, increases
the cell constant, and leads to an abnormally low conductivity measurement.
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