Operating
7.12 Open Channel Monitoring (OCM)
HydroRanger 200 HMI
144
Operating Instructions, 06/2018, A5E36281317-AC
7.12.4.4
H-flume
①
Transducer
1)
④
Empty (2.2.4.) (Page 170)
②
Flow
⑤
Span (2.2.2.) (Page 169)
③
Point of measurement
⑥
D=flume height
Parameter
Mode
Primary Measuring Device (2.13.2.)
(Page 240)
H-Flume
PMD Dimensions (2.13.5.) (Page 246)
(Page 246)
Flume height (D)
Maximum Head (2.13.4.2.) (Page 243)
Maximum Head
Maximum Flow (2.13.4.3.) (Page 243)
Maximum Flow
Flow Time Units (2.13.4.4.) (Page 244) Time Units
●
Sized by maximum depth of flume
●
Approach is preferably rectangular, matching width and depth for distance, 3 to 5 times
the depth of the flume.
●
May be installed in channels under partial submergence (ratio of downstream level to
head). Typical errors are:
–
1% @ 30% submergence
–
3% @ 50% submergence
●
For rated flows under free flow conditions, the head is measured at a point downstream
from the flume entrance.
Summary of Contents for HydroRanger 200 HMI
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Page 354: ...Updating software HydroRanger 200 HMI 352 Operating Instructions 06 2018 A5E36281317 AC ...
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