Open-Channel Flow Measurement - +Gf+ 2298 Bedienungsanleitung

Instruction manual
5.8

Open-channel flow measurement

5.8.1 P40 Volume flow measurement options
FACTORY DEFAULT: 0000
A selection of typical flume or weir shapes for open channel flow measurement. The flume or weir dimensions can be set using pa-
rameters P41...P45 (see figures below). In the case of the OCT setting, the flume or weir shape must be specified in a table.
P40 ba
Flow measurement ➙ Open channel flow measurement methods
EView2
ba Type
00 GPA-1P1
01 GPA-1P2
02 GPA-1P3
03 GPA-1P4
04 GPA-1P5
05 GPA-1P6
06 GPA-1P7
07 GPA-1P8
08 GPA-1P9
09
10
11
12
13
14
15
16
17
18
19
20
21
22
30
31
32
33
34
35
36
37
38
Flume, formula, data
See Output Conversion Table
Calculation formula
Q [l/s] = 60.87*h1,552
Q [l/s] = 119.7*h1,553
Q [l/s] = 178.4*h1
Q [l/s] = 353.9*h1
Q [l/s] = 521.4*h1
Q [l/s] = 674.6*h1
Q [l/s] = 1014.9*h1
Q [l/s] = 1368*h1
Q [l/s] = 2080.5*h1
Generic Parshall flume
Palmer-Bowlus (D/2)
Palmer-Bowlus (D/3)
Palmer-Bowlus (rectangular)
Khafagi-Venturi
Weir
Rectangular or Bazin weir
Trapezoidal weir
Special trapezoidal (4:1) weir
V-shaped weir
Thomson (90°) weir
Circular weir
Generic formula: Q[l/s] = P41*hP42, h [m]
Generic formula: Q[l/s] = P41*hP42, h [P00:cb]
4" Palmer-Bowlus (D/2)
6" Palmer-Bowlus (D/2)
8" Palmer-Bowlus (D/2)
10" Palmer-Bowlus (D/2)
12" Palmer-Bowlus (D/2)
15" Palmer-Bowlus (D/2)
18" Palmer-Bowlus (D/2)
21" Palmer-Bowlus (D/2)
24" Palmer-Bowlus (D/2)
Qmin [l/s] Qmax [l/s]
0.26 5.38
0.52 13.3
0.78 49
1.52 164
2.25 360
2.91 570
4.4 890
5.8 1208
8.7 1850
Type 2298 80 GHz Radar Level Sensor
"P" [cm] Parameters
30
34
39
53
75
120
130
135
150
P46, P41, P42
P46, P41, P42
P46, P41, P42
P46, P41, P42
P46, P41, P42
P46
P46
P46
P46
P46
P46
P46
P46
P46
P46, P42
P46, P41
P46, P41
P46, P42
P46, P42
P46, P42
P46, P42
P46
P46, P41
P46
P46
P46
P46
P46
P46
P46
P46
P46
39