The InfoWater Pro's Pressure Zone Manager (PZM) is a collection of tools to interactively define, verify, and color code each pressure zone in a water distribution system model. The Pressure Zone Manager provides analysis information and summary reports for each identified pressure zone (max/min pressure, water age/quality, elevation, demand, etc.) and the inter-zone  information (inflow, outflow, etc.). The model may be color-coded by pressure zone and summary reports/schematics can be developed for each zone.

The purpose of PZM can be many-fold. When working on the development of a model, it will rapidly point out inconsistencies and incorrect model construction. When reviewing (QA/QC) a previously constructed model it will prove invaluable to be able to identify pressure zones and it will quickly become a very valued tool to allow planners the ability to review models created by other modelers. It provides a more simplified view of a distribution system so that system dynamics can be more easily understood by operators, engineers, planners, and upper level management staff. Master plans are typically prepared at multi-year intervals. This tool is a practical jump start to understanding and using a model that has been created by others.

You must select a scenario and, if it is an Extended Period Simulation, you must also select a time for the zone trace analysis. The Hydraulic Profiler will also work with a non-running model; it simply won’t have output data and, depending on the stage of the model development, it may provide nonsensical results. This is actually good as it will point out connectivity errors as well as other problems with the input data set. As an option, you are allowed to select which elements (tanks, reservoirs, pumps, check valves, control valves, closed pipes) you want to use to define the end of a pressure zone.

Pressure Zone Trace

The Pressure Zone Trace (PZM) will automatically select a starting node or start at a user-designated starting node and perform a trace following geometric connectivity until all boundary elements are located. Natural pressure zone boundary elements are tanks, reservoirs, pumps, control valves, pipes with check valves, and closed pipes. All facilities located within each zone can be colored to show zone areas. It is also possible to define user-designated zone boundaries or to ignore specific natural boundary elements so that zones can be divided at geographic or political boundaries as well as by the normal hydraulic boundary criteria.

Zone Summary Reports

A Zone Summary Report is created for each pressure zone after the traced analysis is completed. The summary report contains information describing the hydraulic and physical characteristics within the pressure zone. Information such as the total length of pipe, total supply and demand, max/min elevation, max/min pressure, and max/min water quality. In addition, a listing of all tanks, reservoirs, pumps, control, and check valves and their contribution in or out of the pressure zone are listed. Schematics and diagrams are automatically generated that shows the paths of flow in and out of the traced pressure zone as well as zone statistics.

For an overview of the Pressure Zone Manager's capabilities, please click here.