Parshall Flume - Siemens SITRANS LUT400 Series Operating Instructions Manual

Parshall Flume

Note: C = Converging Dimension.
Front View
* The transducer must be above the maximum head by at least the blanking value (see
Range
).
Application information
• Sized by throat width
• Set on solid foundation
• For rated flows under free flow conditions, the head is measured at
the converging section from the beginning of the throat section
Parameter
2.15. 1 . Primary Measuring Device (PMD)
2.15.3.2. Flow Exponent
2.15.3.3. Maximum Head
2.15.3.4. Maximum Flow at 20 mA
b
2.15.4.1. K Factor
a.
Typical Flow Exponent range for Parshall Flume; consult your flume documen-
tation.
b.
Required for exponential device absolute calculation only.
A5E33329501
Plan View
Side View
Zero
Head
SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
C
2
/ C
3
transducer*
Value
Exponential Devices
a
1.522–1.607
flow
Q
2.2.4. Near
2
/ the length of
3
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