Design, Assembly and Service Manual
Page 5 of 44
Induction flow meter FMG600 series
4. TECHNICAL PARAMETERS
4.1. Flow sensor
4.1.1. Selection of correct sensor size
The following table shows minimum and maximum flow rates for various sensor sizes and flow velocities
ranging from 0.33 to 32.81 ft/s (0.1 to 10 m/s). The operational flow-velocity range is best to choose 1.64 to
16.40 ft/s (0.5 to 5 m/s), see the diagram below. For lower flow velocities, the measurement accuracy is
worse while at higher flow velocities the turbulences at contact edges may cause undesirable interference.
Minimum and maximum flow rates for various sensor sizes
DIN
ANSI
GPM
l / s
GPH
m
3
/ hour
DN inches Qmin Qmax Qmin
Qmax
Qmin
Qmax Qmin Qmax
15
½
0.29 29
0.018
1.8
17.2
1712
0.065 6.5
20
¾
0.528 52.8
0.0333
3.33
31.7
3167 0.12
12
25 1
0.79 79
0.05
5
47.6
4755
0.18 18
32 1
¼- 1.32 132
0.0833
8.33
79.3
7925 0.30
30
40
1
½
1.98 198
0.125
12.5
118.9
11888
0.45 45
50 2 3.17 317
0.2
20
190
19020
0.72 72
65 2
½ 5.28 528
0.3333
33.33
317
31700 1.2 120
80 3 7.93 793
0.5
50
475.5
47552
1.8 180
100 4
12.33 1233
0.7777
77.77
739.6
73962 2.8 280
125 5
18.93 1893
1.1944
119.44
1136
113594 4.3 430
150 6
28.62
2862
1.8055
180.55
1717
171711
6.5 650
200 8
50.63 5063
3.194
319.4
3038
303764
11.5 1150
250 10 79.25 7925
5
500
4755
475523 18 1800
300 12 111
11100
7
700
6657
665732
25.2 2520
Operational flow rates and flow velocities for various sensor sizes
