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MODEL 923 - SIDE STREAM OR SUBMERSION
SIDE STREAM (By-Pass) LINE MOUNTING - Measurements in 3/4" side stream lines allow electrodes to be mounted in convenient locations. Side stream mountings are particularly useful in applications involving oily coatings, low suspended sotiris contents or moderately viscous materials. Side stream mounting hardware allows The velocity past the electrode to be controlled in a predictable manner. In the 3/4" flow cell's restricted 1/4" flow channel each GPM flow provides a 2 fVsec velocity past the flat electrode's sensing surface. Flow rates of 3 to 5 GPM provide adequate cleaning velocities in water weight applications. Exact control of flow rates is not required. In viscous material applications these flow rates may be difficult to achieve; however, lower rates still provide flow in shear to assure that fresh material is at the measuring surface. SUBMERSION MOUNTING - Measurements in tanks, flumes and sewer lines are conveniently made with the submersion system. It is well suited for applications with high suspended solids or where flocculation operations require low velocities. It is also useful for coating problems in tanks which have high agitation. Where only low velocities are present and coating is a problem, the electrode can be mounted at a 45° angle facing into the flow so as to obtain increased scrubbing action across the measuring surface. In certain applications it may be necessary to install a small circulating pump and use the side stream unit to achieve the needed self-cleaning action.