Siemens SITRANS L 7ML5400 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 176)).
Parameter
Primary Measuring Device (PMD) (2.15.1.) (Page 234)
PMD Dimensions (2.15.4.) (Page 239)
Maximum Head (2.15.3.3.) (Page 237)
Far Range (2.2.5.) (Page 177)
Flowrate Units (2.15.3.7.) (Page 238)
Method of Flow Calculation (2.15.3.1.) (Page 235)
Maximum Flow at 20 mA (2.15.3.4.) (Page 237)
Round Pipe
①
②
③
④
⑤
Parameter
Primary Measuring Device (PMD) (2.15.1.) (Page 234)
PMD Dimensions (2.15.4.) (Page 239)
Maximum Head (2.15.3.3.) (Page 237)
Far Range (2.2.5.) (Page 177)
Flowrate Units (2.15.3.7.) (Page 238)
Method of Flow Calculation (2.15.3.1.) (Page 235)
Maximum Flow at 20 mA (2.15.3.4.) (Page 237)
146
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 176)).
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, 04/2021, A5E33329501-AG
SITRANS LUT400