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To select the meter size:
See Table 9.3 and find meter sizes within the velocity of 0.3 to 10 m/s for a specified full-scale
(measuring range high limit) flow. Select one that has its full-scale velocity between 1 and 3
m/s.
Make sure the full-scale flow rate used for the final planning stage stays within 10 m/s
in terms of flow velocity.
Meter size
inch
0.98ft/s
20"
933.7
2,846
24"
1,344
4,098
28"
1,830
5,578
30"
2,101
6,403
32"
2,390
7,285
36"
3,025
9,221
40"
3,735
11,433
42"
4,117
12,551
48"
5,378
16,392
54"
6,806
20,747
60"
8,403
25,611
66"
10,168
31,125
72"
12,100
36,884
78"
14,201
43,285
Table 9.3 Flow rate and Flow velocity
Unit : gal/min
Flow velocity
10ft/s
3ft/s
32.8ft/s
9,486
31,120
13,660
44,820
18,590
61,000
21,340
70,020
24,280
79,670
30,740
100,800
38,109
124,997
41,833
137,239
54,640
179,280
69,143
226,883
85,359
280,090
103,751
340,303
122,939
403,315
144,284
473,411
—
Meter size
mm
0.3m/s
500
212.2
600
305.4
700
415.6
750
477.1
800
542.9
900
687.1
1000
848.2
1050
935.2
1200
1,221
1350
1,546
1500
1,909
1650
2,309
1800
2,748
1950
3,225
—
41
６Ｆ８Ａ０９４３
Unit : m3/h
Flow velocity
3m/s
1m/s
706.9
2,121
1,018
3,054
1,385
4,156
1,590
4,771
1,810
5,429
2,290
6,871
2,827
8,482
3,117
9,352
4,072
12,215
5,153
15,459
6,362
19,085
7,698
23,093
9,161
27,483
10,751
32,254
107,513
10m/s
7,069
10,179
13,854
15,904
18,096
22,902
28,274
31,172
40,715
51,530
63,617
76,977
91,609
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