Khafagi Venturi - Siemens SITRANS LUT400 Operating Instructions Manual

Parameter
Primary Measuring Device (PMD) (2.15.1.)
(Page 230)
Flow Exponent (2.15.3.2.) (Page 231)
Maximum Head (2.15.3.3.) (Page 232)
Maximum Flow at 20 mA (2.15.3.4.) (Page 232)
Flowrate Units (2.15.3.7.) (Page 233)
K Factor (2.15.4.1.) (Page 235)
Typical Flow Exponent range for Cut Throat Flume; consult your flume documentation.
1)
Required for exponential device absolute calculation only.
2)
7.11.4.6

Khafagi Venturi

①
②
③
④
⑤
* The transducer must be above the maximum head by at least the blanking value (see Near
Range (2.2.4.) (Page 172)).
Application Information
● Similar to Parshall flume except that the floor is flat bottomed and the sidewalls are
curved.
● For rated flows under free flow conditions, the head is measured 1 x (channel width)
upstream from the beginning of the converging section.
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
Zero head
Transducer
Channel width
1 x Channel width
Flow
Value
Exponential Devices
1.56-2.00
2
General Operation
7.11 Open Channel Monitoring (OCM)
1
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