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Chapter 1. Installation
1.5.5
Maximum and Minimum Flow
Maximum and minimum flow rates through the Sentinel Flow Measurement System are based on the pipe diameter
and the process fluid pressure. The information in the following tables is approximate, and is based on representative
natural gas components at a process temperature of 70°F (21°C). See Table 3 and Table 4 below for English units and
Table 5 on page 7 and Table 6 on page 7 for metric units.
psig
6"
100
16.2
200
30.7
400
61.1
600
93.3
800
127.3
1000
163.0
1200
200.3
1400
238.8
1480
254.5
Maximum flow rates are based on 118 ft/sec flow velocity for 6" through 10" diameter pipes,
psig
6"
100
0.3
200
0.6
400
1.2
600
1.9
800
2.5
1000
3.3
1200
4.0
1400
4.8
1480
5.1
Minimum flow rates are based on 2.36 ft/sec flow velocity for 6" through 10" diameter pipes,
6
8"
10"
12"
28.0
44.2
47.3
53.2
83.9
89.8
105.9
166.8
178.6
161.5
254.6
272.6
220.4
347.4
371.9
282.2
444.9
476.3
346.8
546.7
585.3
413.6
651.9
697.9
440.7
694.7
743.7
and on 89 ft/sec for 12" through 24" diameter pipes.
8"
10"
12"
0.6
0.9
0.8
1.1
1.7
1.5
2.1
3.3
3.0
3.2
5.1
4.5
4.4
6.9
6.2
5.6
8.9
7.9
6.9
10.9
9.7
8.3
13.0
11.6
8.8
13.9
12.4
and on 1.48 ft/sec for 12" through 24" diameter pipes.
14"
16"
18"
57.2
74.7
94.5
108.6
141.8
179.5
215.9
282.0
357.0
329.5
430.4
544.8
449.4
587.1
743.2
575.6
751.9
951.8
707.3
924.0
1169.6
843.5
1101.9
1394.7
898.8
1174.1
1486.2
14"
16"
18"
1.0
1.2
1.6
1.8
2.4
3.0
3.6
4.7
5.9
5.5
7.2
9.1
7.5
9.8
12.4
9.6
12.5
15.8
11.8
15.4
19.4
14.0
18.3
23.2
14.9
19.5
24.7
20"
24"
117.5
169.9
223.1
322.6
443.6
641.6
677.0
979.1
923.4
1335.6
1182.7
1710.5
1453.3
2102.0
1733.1
2506.6
1846.8
2671.0
20"
24"
2.0
2.8
3.7
5.4
7.4
10.7
11.3
16.3
15.4
22.2
19.7
28.4
24.2
35.0
28.8
41.7
30.7
44.4
Sentinel™ User's Manual
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