This model outputs the density of the fluid connected to its port. The sensor is ideal, i.e. it does not influence the fluid.
To measure density in a duct or pipe, use BuildingSystems.Fluid.Sensors.DensityTwoPort rather than this sensor. Read the BuildingSystems.Fluid.Sensors.UsersGuide prior to using this model to see about potential numerical problems if this sensor is used incorrectly in a system model.
warnAboutOnePortConnection
and updated documentation.