ADS Environmental Services IntelliServe 2.8.1 950026A7 - Manual (Page 282)

Glossary C-3
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Event Events occur when measurements or data exceed
specific thresholds or when special conditions are
present or occur.
Flow Monitor A flow monitor measures open-channel flow in
sanitary sewers, storm sewers, and other
environments using sensor devices installed in at a
monitoring point in a pipe. One flow monitor can
support up to two monitoring points.
Hydraulic Coefficient (HC) The HC represents the square root of the slope of the
pipe divided by the friction factor for the pipe where
the sensors are installed. The HC is used in the
modified Manning equation to compute average
velocity. For monitoring points where there is depth
and velocity data, IntelliServe back-calculates the
HC based on the measured depth and velocity
readings at the installation point. For monitoring
points where there is no velocity data, the System
Administrator can manually enter an HC that has
been calculated for the location based on manual
confirmations performed by ADS field crews.
Hydrograph A hydrograph is a graph that displays one or more
data entities over a specified time period.
Location A location represents a flow monitor installed in a
manhole or a rain gauge.
Location Group A location group is a user-defined grouping of
locations. The groups allow data collection to be
performed, and reports to be organized for similar
locations.
Limit (Event) An event limit refers to the threshold value that
triggers an event or alarm.
Map Extent The map extent is the distance (in degrees) from the
center point to the edge of the map display.