14 Appendix A – Flow measurement ranges
14 Appendix A – Flow measurement ranges
14.1 Volumetric flow ranges
Stated measuring ranges are stated under following conditions:
• Standard flow in air
• Reference pressure: 1000 hPa
• Reference Temperature: +20°C
Tube Volumetric Flow
Inch mm
Min Max Min Max Min Max
m
3
/h m
3
/min cfm
1¼” 36 50 507 0.85 8.5 29.3 298.6
1½” 41.9 74.2 756.5 1.26 12.6 43.7 445
2” 53.1 127.3 1298 2.16 21.6 75 764
2½” 68.9 223 2273 3.79 37.9 134 1338
3” 80.9 318 3176 5.29 52.9 183 1869
4” 100 491 4880 8.13 81.3 289 2872
5” 125 767 7624 12.8 127.1 451 4487
6” 150 1106 10996 18.4 183.3 651 6471
8” 200 1973 19611 32.9 326.9 1161 11541
10” 250 3082 30642 51.4 510.7 1814 18033
12” 300 4439 44125 73.54 735.4 2612 25967
Flow range for Air at 6 bar(g), 50°C, and 90% humidity. For other gases and
conditions please download Flow Range software from www.suto-itec.com.
Remarks:
To fast access the tool download page, enter "flowrange" (without
spaces) in the search field, and then click the search result.
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