ETI RCD-1 to RCD-6 Passive Waveguide Dehydrators

ETI RCD-1 to RCD-6 Passive Waveguide Dehydrators

The ETI NETCOM RCD series provides economical, power-free dehydration for small-volume antenna waveguides and coaxial-cable systems. Six passive and self-pumping models are available for indoor, outdoor and molecular-sieve applications.

RCD passive dehydrators contain desiccant in a pressure-tight container connected to the protected system through a 1/8-inch NPT fitting. Moisture reaches the desiccant through gas diffusion, making these models particularly effective when the waveguide or coaxial system is tightly sealed.

The self-pumping RCD-2, RCD-4 and RCD-6 use changes in ambient temperature and barometric pressure to circulate dry air and maintain positive system pressure. A sensitive check valve allows ambient air to enter through the desiccant when system pressure falls below atmospheric pressure and closes when internal pressure rises.

Depending on system volume, sealing and environmental conditions, the desiccant typically provides 12 to 18 months or more of service before regeneration or replacement is required. The color-indicating desiccant allows convenient visual inspection.

Series: RCD-1, RCD-2, RCD-3, RCD-4, RCD-5 and RCD-6
Application: Small-volume waveguide and coaxial-cable dehydration
Operation: Passive or self-pumping passive
Power Requirement: None
Maximum Dehydrated Volume: 1 cu. ft.
Rated Pressure: Up to 8 psig
Maximum Pressure: 20 psig
System Connection: 1/8-inch NPT
Desiccant Service Interval: Typically 12-18 months or longer
Check-Valve Sensitivity: Nominally 0.1 psig for RCD-2, RCD-4 and RCD-6
RCD-1 through RCD-4 Desiccant: Sorbead Orange aluminosilicate gel
RCD-5 and RCD-6 Desiccant: Molecular sieve with blue indicating gel
Passive-Model Height: 5.75 in. (132 mm)
Self-Pumping Model Height: 6.63 in. (166 mm)
Diameter: 2.375 in. (60 mm)
Warranty: Two years

Available Models

• 17958 - RCD-1: Passive Dehydrator, Outdoor
• 17963 - RCD-2: Self-Pumping Passive Dehydrator, Outdoor
• 24649 - RCD-3: Passive Dehydrator, Indoor
• 24650 - RCD-4: Self-Pumping Passive Dehydrator, Indoor
• 24642 - RCD-5: Passive Dehydrator, Molecular Sieve
• 24643 - RCD-6: Self-Pumping Passive Dehydrator, Molecular Sieve

Model Selection

• RCD-1: Outdoor passive model using gas diffusion
• RCD-2: Outdoor self-pumping model with check valve
• RCD-3: Indoor passive model using gas diffusion
• RCD-4: Indoor self-pumping model with check valve
• RCD-5: Passive model with molecular-sieve desiccant
• RCD-6: Self-pumping model with molecular-sieve desiccant and check valve

Key Features

• Keeps small waveguide and coaxial-cable systems dry

• Requires no electrical power

• Passive and self-pumping configurations available

• Outdoor, indoor and molecular-sieve models

• Self-pumping models maintain positive system pressure

• Controlled dry-air circulation responds to environmental changes

• Color-indicating desiccant shows when service is required

• Typical desiccant life of 12 to 18 months or longer

• Simple installation through a 1/8-inch NPT connection

• Compact, reliable and economical design

• Can provide temporary protection for larger systems

• Suitable for maintenance, storage, transportation and power interruptions