Siemens SITRANS LUT400 - Universal Head Versus Flow (2.15.5.)

SITRANS LUT400
236 Operating Instructions, 07/2019, A5E33329501-AC
V-Notch Angle (2.15.4.2.)
The V-Notch angle used in the flow calculation formula.
Values
Range: 25.000 to 95.000
Default: 25.000
Use when PMD is set to Thin Plate V-Notch Weir.
Slope (2.15.4.3.)
The Flow Slope used in the flow calculation formula.
Values
Range: -999.000 to 9999.000
Default: 0.000
Use when PMD is set to Trapezoidal Flume or Round Pipe.
Roughness Coefficient (2.15.4.4.)
The Flow Roughness Coefficient used in the flow calculation formula.
Values
Range: -999.000 to 9999.000
Default: 0.000
Use when PMD is set to Round Pipe.
OCM Dimensions 1- 4
OCM Dimension 1 (2.15.4.5.)
OCM Dimension 2 (2.15.4.6.)
OCM Dimension 3 (2.15.4.7.)
OCM Dimension 4 (2.15.4.8.)
See table under PMD Dimensions (2.15.4.) (Page 234) to relate OCM Dimension 1-4 above
to a specific dimension for each directly supported Primary Measuring Device. For PMDs
that are not directly supported (Universal Head Flow), use a Universal Flow calculation. See
Universal calculation support (Page 147).
For more information on PMD, see Open Channel Monitoring (OCM) (Page 121).
9.2.15.5 Universal Head versus Flow (2.15.5.)
In the following table, enter Head and Flow Breakpoints for universal PMDs.
Head Breakpoints: The head breakpoints for which flowrate is known, defined in Units
(2.1.1.) (Page 168).