Siemens SITRANS LUT400 - PMD Dimensions (2.15.4.)

SITRANS LUT400
234 Operating Instructions, 07/2019, A5E33329501-AC
IMPGAL/MIN (Imperial Gallons per minute)
IMPGAL/D (Imperial Gallons per day)
CUM/H (Cubic meters per hour)
CUM/D (Cubic meters per day)
MMGAL/D (Mega-gallons per day)
USER DEFINED (units defined in User Defined Unit (2.15.3.8.) (Page 234))
User Defined Unit (2.15.3.8.)
Set the unit text to display for current flow when Flowrate Units (2.15.3.7.) (Page 233) set to
user-defined. Limited to 16 ASCII characters.
Note
The text entered is simply for display purposes. No unit conversion occurs.
Low Flow Cutoff (2.15.3.9.)
Eliminates totalizer activity for head levels at or below the cutoff value.
Values
Range: 0.000 to 60.000
Default: 0.000
Enter the minimum head in Units (2.1.1.) (Page 168) where totalizer activity should cease.
9.2.15.4 PMD Dimensions (2.15.4.)
The dimensions of the Primary Measuring Device (PMD). (The dimensions of the vessel, wet
well, or reservoir are only important if you require volume.)
The following table is a reference to the parameters that must be set for each PMD.
Parameter definitions follow the table.
Supported PMD
Dimensions Required
Exponential devices
Flow exponent (2.15.3.2.)
K factor (2.15.4.1.)
Rectangular Flume BS-3680
Approach width B - OCM Dimension 1 (2.15.4.5.)
Throat width b - 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.)
Round Nose Horizontal Crest Weir BS-3680
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.)
Trapezoidal Flume BS-3680
Approach width B - OCM Dimension 1 (2.15.4.5.)
Throat width b - OCM Dimension 2 (2.15.4.6.)