Civil Engineering Reference
In-Depth Information
Table 2.9
A review of the main flow meters
Type of fluid to
measure
Max
pressure
Max
temperature
Reynolds
number
Pipe diameter
(mm)
Operating
range
Typical
accuracy (%)
Pressure losses
(kPa)
Type of device
Liquid Gas Vapor MPa psi
C
F
Volume meter
5-500
x
x
-
20
2,900
100
212 Any value
50:1
0.2-0.5
50-100
>
10,000
Velocity meter
10-600
x
x
-
10
1,450
200
392
15:1
0.2-0.5
5-10
Head meters: orifice and
Venturi tube
>
50
x
x
x
50
7,252 500
932
>
2,500
4:1
1-2
2,050
Pitot
>
100
x
x
x
50
7,252
500
932 Any value
4:1
2-5
1-2
Vortex
25-200
x
x
x
10
1,450
200
392
>
10,000
15:1
0.75-1.5
10-20
Rotameter
5-150
x
x
x
4
580
200
392
>
10,000
10:1
2-3
5-10
Sonic meter
Any value
x
x
-
20
2,900
200
392 Any value
10:1
2-3
0
Magnetic meter
Any value
x
-
-
20
2,900
200
392 Any value
20:1
0.5
0
Coriolis mass meter
5-100
x
x
-
30
4,351
150
302 Any value
100:1
0.1-0.5
10-20
Thermal mass meter
>
5
x
x
-
10
1,450 200
392 Any value
100:1
0.5-2
10-20
