Siemens SITRANS LUT400 Operating Instructions Manual page 146

General Operation
7.11 Open Channel Monitoring (OCM)
* The transducer must be above the maximum head by at least the blanking value (see Near
Range (2.2.4.) (Page 172)).
Parameter
Primary Measuring Device (PMD) (2.15.1.) (Page 230)
PMD Dimensions (2.15.4.) (Page 234)
Maximum Head (2.15.3.3.) (Page 232)
Far Range (2.2.5.) (Page 172)
Flowrate Units (2.15.3.7.) (Page 233)
Method of Flow Calculation (2.15.3.1.) (Page 231)
Maximum Flow at 20 mA (2.15.3.4.) (Page 232)
Round Pipe
①
②
③
④
⑤
Parameter
Primary Measuring Device (PMD) (2.15.1.) (Page 230)
PMD Dimensions (2.15.4.) (Page 234)
Maximum Head (2.15.3.3.) (Page 232)
Far Range (2.2.5.) (Page 172)
Flowrate Units (2.15.3.7.) (Page 233)
Method of Flow Calculation (2.15.3.1.) (Page 231)
Maximum Flow at 20 mA (2.15.3.4.) (Page 232)
144
Pipe Inside Diameter (D)
Transducer
This dimension should be at least 15 cm (6") shorter than the blanking value (see Near Range
(2.2.4.) (Page 172)).
The transducer must be above the maximum head by at least the blanking value.
Height (h)
Value
Rectangular Weir Contracted
Crest Width b
Value
Round Pipe
Pipe Inside Diameter D
Slope (fall/run) s
Roughness Coefficient n
Operating Instructions, 07/2019, A5E33329501-AC
SITRANS LUT400