Siemens SITRANS L 7ML5400 Operating Instructions Manual page 134

General Operation
7.11 Open Channel Monitoring (OCM)
Parameter
Primary Measuring Device (PMD) (2.15.1.)
(Page 234)
PMD Dimensions (2.15.4.) (Page 239)
Zero Head Offset (2.15.3.5.) (Page 237)
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)
BS- 3680 Round Nose Horizontal Crest Weir
①
②
③
④
⑤
⑥
* 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)
134
Height (h)
Transducer
Crest width (b)
Crest length (L)
Crest height (p)
3 to 4 x h
max
Value
BS-3680 Rectangular Flume
Approach width (B)
Throat width (b)
Hump Height (p)
Throat length (L)
Value
BS-3680 Round Nose Horizontal Crest Weir
Crest Width b
Operating Instructions, 04/2021, A5E33329501-AG
SITRANS LUT400