MT Series DryLine
®
Dehydrator User Manual
12
System Volumes, Times to Purge and Pressurize
Line Type Volumes
Time to Purge 1000 ft (305 m)
in Hours per 3 Volumes
Time to Pressurize to
Operating Pressure In Hours
Per 1000 ft (305 m
2
.)
ft
3
per1000 ft
liters per
1000m MT1000 MT2000 MT1000 MT2000
HELIAX Coaxial Cable, Pressurized to 5 lb/in
2
(35 kPa)
3" 36.7 3410 1.64 0.82 .184 .092
4" 69.9 6494 3.12 1.56 .352 .176
5" 117.0 10870 5.20 2.60 .588 .294
HELIAX Elliptical Waveguide, Pressurized to 5 lb/in
2
(35 kPa)
EW34 25.0 2323 1.112 0.556 0.124 0.062
EW28 36.0 3345 1.6 0.8 0.360 0.090
EW20 60.5 5621 2.688 1.344 0.304 0.152
EW17 71.0 6596 3.156 1.578 0.356 0.178
Circular Waveguide, Pressurized to 5 lb/in
2
(35 kPa)
WG269 39.5 3670 1.756 0.878 0.200 0.100
WC281 43.1 3746 1.916 0.958 0.216 0.108
Rigid Transmission Line, Pressurized to 5 lb/in
2
(35 kPa)
3-1/8” 48.7 4524 2.164 1.082 0.244 0.122
4-1/16” 84.0 7804 3.732 1.866 0.424 0.212
6-1/8” 194.0 18023 8.624 4.312 0.976 0.488
8-3/16” 347.0 32236 15.424 7.712 1.748 0.874
Guideline Waveguide for UHF-TV, Pressurized to 2 lb/in
2
(14 kPa)
GLW1350 994 92343 44.16 22.08 2.000 1.000
GLW1500 1227 113988 54.52 27.26 2.480 1.240
GLW1700 1576 146410 70.04 35.02 3.200 1.600
GLW1750 1670 155143 74.24 37.12 3.36 1.68
Caution:
uMx-459, -465,-611 and HPX12-6511Cand
P-186 Antennas have lowerpressure
ratings than the Antennasas indicated in
the chart below.
Maximum pressure ratings for reference only,
contact the antenna groupfor actual pressure
ratings.Specicfeedsandpressurewindowsmay
havereduced pressure ratings.
Antenna
Max. PressureRating,
lb/in2 (kPa)
uMx-459 5 (35)
UMx-611 5 (35)
HPX12-6511C 5 (35)
P-186 2 (14)
2 GHz Antennas 3 (21)
These Line Types are for refernce only. Please go
to commscope.com and use the "Pressurization
Calculation" program.