7ML19981FB05 MultiRanger 100/200 – INSTRUCTION MANUAL Page 77
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Open Channel Monitoring
MR 200
H Flume
• 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
• H flumes come with a flat or sloping floor. The same flow table can be used because
error is less than 1%.
Parameter Index Value
P600 G 3–H Flume
P602 1 Flume height (D)
P603 G Maximum Head (preset = P007)
P604 G Maximum Flow
P606 G Time Units
Flume Size
(Diameter in feet)
Point of Measurement
cm inches
0.5 5 1¾
0.75 7 2¾
1.0 9 3¾
1.5 14 5½
2.0 18 7¼
2.5 23 9
3.0 28 10¾
4.5 41 16¼
Flow
D
Front View
Side View
Point of Measurement
Transducer
P006
P007
Plan View
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