Allen-Bradley 839E, User Manual, Page: 28 / 32

839E Solid-State Flow Sensors User Manual
26 Pub #10000004735 Ver 03, May 2012
Figure 16 p/T load diagram
L = insertion length
vW = water fluid velocity = 3 m/s (9.84 ft/s)
Flow Switch Conversion
Feet per second (ft/s) to gallons per minute (gpm)
id " (inch) 0.37 0.62 0.87 1.37 1.87 2.37 2.87 3.87
id (mm) 9.4 15.75 22.1 34.8 47.5 60.2 72.9 97.38
Flow ft/s
0.3 0.1 0.3 0.6 1.5 2.8 4.5 6.6 11.8
0.7 0.2 0.6 1.2 3.0 5.6 9.0 13.2 23.6
1.3 0.4 1.2 2.4 6.0 11.2 18.0 26.5 47.2
2.0 0.7 1.9 3.6 9.0 16.9 27.1 39.7 70.8
2.6 0.9 2.5 4.9 12.1 22.5 36.1 52.9 94.4
3.3 1.1 3.1 6.1 15.1 28.1 45.1 66.2 118.1
3.9 1.3 3.7 7.3 18.1 33.7 54.1 79.4 141.7
4.6 1.5 4.3 8.5 21.1 39.3 63.2 92.6 165.3
5.2 1.8 4.9 9.7 24.1 44.9 72.2 105.9 188.9
5.9 2.0 5.6 10.9 27.1 50.6 81.2 119.1 212.5
6.6 2.2 6.2 12.2 30.2 56.2 90.2 132.3 236.1
7.2 2.4 6.8 13.4 33.2 61.8 99.3 145.5 259.7
7.9
2.6 7.4 14.6 36.2 67.4 108.3 158.8 283.3
8.5
2.9 8.0 15.8 39.2 73.0 117.3 172.0 306.9
9.2
3.1 8.6 17.0 42.2 78.6 126.3 185.2 330.5
9.8
3.3 9.3 18.2 45.2 84.3 135.3 198.5 354.2
gpm
Conversion ft/s to gpm
0.1
1.0
10.0
100.0
1000.0
0 . 0 1 0 . 1 1 . 0
Flow rate ft/s
V
o
lu
m
e
g
p
m
DN100
DN80
DN65
DN50
DN40
DN25
DN20
DN10
½" ¾" 1½" 2½"
4" 2" 3" 1"
DN