SECTION 3
Open Channel Flow Monitoring (O.C.M.)
The following main parameters set up an Open Channel Flow Monitoring application.
No
7.0 Edit
OCM No
7.1 Flow Device
(Rect.Flume 3/2)
7.3 Maximum Flow
(50.00)
7.4 Total. Units
(in m3)
7.5 Ext. Tot. Drv.
(0.000)
7.6 Total Reset
(No)
Yes
7.2 Max Flow Val
(Auto calculate)
Pr.7.1
Flow device (D = Rect. Flume 3/2)
The instrument provides options for three standard ratio-metric flow devices, three
BS3680 flow devices, a variety of Parshall flumes or a custom 24-point table.
Select the flow device from the following list.
Options displayed
Description Action
7.1.1 Std. Ratio Rect. Flume 3/2 Standard Ratio Rectangular flume 3/2
7.1.2 Std. Ratio Rect. Weir 3/2 Standard Ratio Rectangular weir 3/2
7.1.3 Std. Ratio V-Notch Weir 5/2 Standard Ratio V-notch weir 5/2
7.1.4 BS3680 Rect. flume BS3680 Rectangular flume * Follow BS3680 set-up at step A
7.1.5 BS3680 Rect. weir BS3680 Rectangular weir * Follow BS3680 set-up at step B
7.1.6 BS3680 V-notch weir BS3680 V-notch weir * Follow BS3680 set-up at step C
7.1.7 Parshall Flumes Parshall Flumes * Follow PARSHALL set-up step D
7.1.8 Custom table 24-point linearization table. Refer to appendix 1
BS3680 set-ups
Rectangular flume Rectangular weir V-notch weir
Step A Step B Step C
7.1.6 BS3680
V-Notch Weir
Angle
000.0 Degrees
ENT
Channel Width
0.000 Metres
ENT
ENT
Vertex Height
0.000 Metres
7.1.5 BS3680
Rect. Weir
Crest Width
0.000 Metres
ENT
Channel Width
0.000 Metres
ENT
ENT
Crest Height
0.000 Metres
Angle (Degrees)
Channel width (Metres)
Vertex
height
(Metres)
Crest width (Metres)
Channel width (Metres)
Crest
height
(Metres)
Throat width (Metres)
Channel
width
(Metres)
Throat length (Metres)
7.1.4 BS3680
Rect. Flume
Throat Width
0.000 Metres
ENT
Channel Width
0.000 Metres
ENT
ENT
Throat Length
0.000 Metres
Hump Height
0.000 Metres
ENT
Ref: MINIFLEX LR MANUAL Rev. 0 20
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