Mace HVFlo XCi, Product Manual

Page: 182 / 255

"Flowrate (using weir)"- channel type
The HVFlo XCi device contains in-built equations for allowing users to measure flow rate through rated
structures such as flumes and weirs. The table below lists the structures supported and the equations used to
calculate flow rate. All of the weir equations assume that the flow is fully contracted, meaning that the
approach channel is wide enough and deep enough that the proximity of the floor and sidewalls to the weir
opening does not affect the flow
(Tony L. Wahl, Bureau of Reclamation Hydraulics Laboratory in Denver,
Colorado, USA)
. The equations used by the XCi device’s and reproduced
here
are used with permission of
U.S. Dept. of the Interior, Bureau of Reclamation - Hydraulic Investigations and Laboratory Services Group.
For further information users are encouraged to visit the following website:
www.usbr.gov/pmts/hydraulics_lab/pubs/wmm/index.htm
Add a "Flowrate (using weir)"- channel type
1. When adding the " New channel " select the related " Depth " channel from the drop down list.
2. Select the weir type that you wish to configure. If you are setting up a flow rate through a Parshall
flume, expand the “ Parshall flume ” weir type and select the appropriate flume width from the
expanded list.
MACE XCi User Manual - 182 -