General Operation
7.11 Open Channel Monitoring (OCM)
SITRANS LUT400
146 Operating Instructions, 07/2019, A5E33329501-AC
● Head is referenced to bottom of the throat, not bottom of the pipe.
● For rated flows under free flow conditions, the head is measured at a distance of D/2
upstream from the beginning of the converging section.
H-Flume
Transducer
The transducer must be above the maximum head by at least the blanking value (see Near
Range (2.2.4.) (Page 172)).
Primary Measuring Device (PMD) (2.15.1.) (Page 230)
PMD Dimensions (2.15.4.) (Page 234)
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)
Method of Flow Calculation (2.15.3.1.) (Page 231)
-Flume can only be setup using ratiometric calculations.
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