Emerson Packages Liquid Analysis Into Pre-Engineered Panels

Emerson has launched the Rosemount 105P Standard Liquid Panel Systems, reported on 17 September: pre-engineered panels combining Rosemount transmitters, sensors, cables, flow cells and flow control components into a configurable architecture for water quality measurement. Parameters covered are pH, oxidation-reduction potential, dissolved oxygen and chlorine. Peyton Munoz is Emerson's global product manager for liquid analysis. The panels are available now.

The claim is that factory assembly, testing and documentation reduce engineering and assembly time by up to 90 percent versus field-built alternatives. Treat the percentage with the usual caution, but the direction is right, and the reason is not really about labour hours.

Anyone who has commissioned a liquid analysis loop knows the sample system is where the trouble lives. The analyser is usually fine. What goes wrong is the sample conditioning: flow too high or too low through the cell, air entrainment, dead volume that delays the reading, a tapping point that does not represent the stream. Those faults are invented fresh on every site when the panel is built by whoever is available, and they are subtle enough to survive commissioning and produce quietly wrong numbers for years.

A factory-built panel with a documented, repeated sample path removes that variability. The secondary effect is comparability: identical sample conditions across sites is a precondition for any cross-plant analysis of water quality data, and it is the thing that most often makes such analysis meaningless when it is attempted.

For water and wastewater operators running many small assets, the configurable panel also lowers the cost floor for instrumenting a site properly rather than partially.