Mace HVFlo XCi, Product Manual

Page: 175 / 255

Edit a "Flowrate (using velocity)" - In a full pipe or circular pipe using
depth
Flowrate units
Select the units and the timebase from the drop down list boxes. This sets the units on the logged value.
Pipe diameter or cross-sectional area
The “ Pipe diameter ” or " Cross-sectional area " when configuring a “ Flowrate (using velocity) ” channel is
preset when the " Velocity " channel is added to the configuration.
Siltation depth
This parameter can be used to correct the calculated flow rate if a known amount of silt is inside the pipe. The
depth of silt will be subtracted from the area calculation in order to calculate the corrected flow rate.
Edit a "Flowrate (using velocity)" - In an open channel
When the stream flow is in an open channel (non-circular), the user must determine the cross-sectional area
and relate it to depth via a polynomial equation. MACE XCi devices use 5th order polynomial equations.
MACE XCi User Manual - 175 -