Siemens SITRANS LUT400 Operating Instructions Manual page 237

Supported PMD
U-Flume BS-3680
Finite Crest Weir BS-3680
Thin Plate Rectangular Weir BS-3680
Thin plate V-notch weir BS-3680
Rectangular Weir Contracted
Round Pipe
Palmer Bowlus Flume
H-Flume
Universal head flow
K Factor (2.15.4.1.)
The constant used in the flow calculation formula for absolute calculation of an exponential
device only.
Values
Use this parameter if the PMD is set to Exponential devices. The Constant Factor is used to
create an exponential curve with end points set by Maximum Head (2.15.3.3.) (Page 232)
and Zero Head Offset (2.15.3.5.) (Page 233) , and with the curve based on the specified
exponent.
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
Dimensions Required
Hump height p - OCM Dimension 3 (2.15.4.7.)
Throat length L - OCM Dimension 4 (2.15.4.8.)
Approach diameter Da - OCM Dimension 1 (2.15.4.5.)
Throat diameter D - OCM Dimension 2 (2.15.4.6.)
Hump height p - OCM Dimension 3 (2.15.4.7.)
Throat length L - OCM Dimension 4 (2.15.4.8.)
Crest width b - OCM Dimension 1 (2.15.4.5.)
Crest height p - OCM Dimension 2 (2.15.4.6.)
Crest length L - OCM Dimension 3 (2.15.4.7.)
Approach width b - OCM Dimension 1 (2.15.4.5.)
Crest width b - OCM Dimension 2 (2.15.4.6.)
Crest height p - OCM Dimension 3 (2.15.4.7.)
V-notch angle (2.15.4.2.)
Crest width b - OCM Dimension 1 (2.15.4.5.)
Pipe inside diameter D - OCM Dimension 1 (2.15.4.5.)
Slope 2.15.4.3.)
Roughness coefficient (2.15.4.4.)
Maximum flume width hmax - OCM Dimension 1 (2.15.4.5.)
Maximum listed head hmax - OCM Dimension 1 (2.15.4.5.)
Head 1 (up to 32) (2.15.5.1.1.)
Flow 1 (up to 32) (2.15.5.1.2.)
Range: -999.000 to 9999.000
Default: 1.000
235