2
Non-Wetting Distance With a Insty-Pac Tube Assembly Having 3” Centers
90%
30” 15” 13” 11” 8” 7” 5.5” 2” 1”
85%
15” 11” 10” 9” 7” 5” 4” 1”
80%
10” 8” 7” 6” 5” 3” 2”
70%
8” 6” 5” 4” 3” 1"
60%
6” 4” 3.5”
2.5”
0.75
50%
4” 3” 2”
0.75”
40%
2” 1.5” 0.5”
30%
1” 0.5”
20%
0.25”
10%
20%
30%
40%
50%
60%
70%
80%
85%
90%
60” 30” 27” 24” 20” 16” 14” 13” 9”
85%
50” 24” 21” 17” 13” 12” 10” 8”
80%
40” 19” 15” 13” 9” 8” 7”
70%
30” 15” 11” 9” 6” 4”
60%
15” 11” 8” 5” 3”
50%
9” 8” 4” 2”
40%
5” 4” 1”
30%
2.5” 1”
20%
0.5”
10%
20%
30%
40%
50%
60%
70%
80%
85%
Relati
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Humi
dity
Le
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Relati
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Humi
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Relative Humidity Entering
Relative Humidity Entering
Non-Wetting Distance With a Insty-Pac Tube Assembly Having 6” Centers
The above is based on air conditions of 55°F duct temperature at a velocity of 500 feet per minute.
Dissipation distance may vary depending on airflow and temperature characteristics.
Air Velocity
3”
Tube Spacing
6”
Tube Spacing
500 fpm
.025
.015
1000 fpm
.085
.030
1500 fpm
.180
.055
750 fpm
.060
.020
1250 fpm
.130
.043
Air Pressure Loss in Inches of Water Column
Note:
Tube spacing greater than 6” has no measureable air pressure loss.
