• Skip to main content
  • Skip to primary sidebar

Narda-ATM - Microwave RF Components Manufacturer

  • Home
  • Products
    • Coaxial Components
    • Ka-Band Satcom
    • Space Qualified
    • Waveguide Components
  • FAQ
    • Frequently Asked Questions
  • Ordering
    • Catalog
    • Credit Card Order Form
    • Ordering Information
    • Request A Quote
    • Sales Representatives
    • Terms And Conditions
  • Calculators
    • Cable Assy Loss Calculations
    • CF 100 Cable Loss
    • CF 135 Cable Loss
    • CF 160 Cable Loss
    • CF 210 Cable Loss
    • CF 300 Cable Loss
    • CF 500 Cable Loss
    • VSWR Calculator
    • Waveguide Gasket Selection
  • Photos
    • Coaxial Photos
    • Waveguide Photos
    • Flight Waveguide Photos
    • ATM Products In Use
  • Technical
    • Cable Assy Loss Calculation
    • Cable Length Tolerances
    • Mil-Spec References
    • Tech Notes
    • Waveguide Gasket Selection
    • Waveguide Flange Sizes & Types
    • Waveguide Info,Rectangular
    • Waveguide Gasket Info
    • Waveguide Info,Dbl Ridge
    • Waveguide Std. Tolerances
  • About ATM
    • Background
    • Contact ATM
    • News and Videos
    • Privacy Policy
    • Quality Control
    • Satisfaction Survey
You are here: Home / Waveguide Components / Passive Dehydrator Dryer

Passive Dehydrator Dryer

Passive Dehydrator Dryer for Waveguide

Waveguide Passive Dehydrators

ATM manufactures a selection of Waveguide Passive Dehydrators ranging from WR28 to WR650. The passive waveguide dehydrator is a low-maintenance, reliable method to remove moisture from waveguide systems. It uses a canister of desiccant to naturally absorb moisture from the waveguide system and collect it in the dehydrator. 

Replacing the contents of the canister every 12-18 months keeps moisture levels in the waveguide system low to prevent corrosion from forming.

For more information feel free to call us and discuss your needs with one of our design engineers.

See Also:
Waveguide Components Menu

Waveguide Passive Dehydrators

• Low cost
• Reliable
• Simple installation
• Low maintenance
• 12 - 18 months typical service life
• Material changes color when service is required
• 8 psig pressure rated, 20 psig max
• Temp. Range: -55°C to +110°C
• VSWR 1.05 typical
• I.L. < 0.1db, see WG information page

Standard Waveguide Passive Dehydrator Dryer - Model 213
Standard Waveguide Passive Dehydrator Dryer - Model 213
Self Pumping Waveguide Passive Dehydrator - Model 214
Self Pumping Waveguide Passive Dehydrator - Model 214

ATM Passive Dehydrators provide cost-effective drying of small volume waveguide systems.  It can be used for backup dehydration in larger systems, eliminating the need to run a pressurized system on emergency power.

Standard Models: Employs a desiccant drying system which lasts 12 to 18 months or more, before needing service depending on environmental conditions and system volume and tightness.  The desiccant material is designed to change color over time, indicating a need for regeneration, which is easily accomplished by heating the material in a convection oven.

Self-Pumping Models: ATM’s self-pumping passive dehydrator use a check valve that relies on fluctuations in atmospheric pressure and ambient temperature to pressurize your waveguide assembly in a seal system.  When the gas pressure inside the waveguide assembly is less than the surrounding atmosphere, a sensitive check-valve opens.  This allows air to enter the system, but only after passing through and being dried by the desiccant.   When internal pressure is greater than atmospheric, the check valve seals shut thereby maintaining positive system pressure, making our self-pumping model responsive to environmental changes providing dry air circulation within the waveguide

Typical Applications for Waveguide systems should be limited to 11 feet in length, or a max of 1 cu. foot for best effectiveness.

The Canister Assembly is mounted to the Waveguide Broadwall, and is designed to be mounted with canister facing sideways or down as shown.

Waveguide Passive Dehydrator / Dryer - Standard Models
WG Size Freq. (GHz) Standard Model No. Self-Pumping Passive
Dehydrators Model No.
Length
Dim A (inches)
Dim B
Approx. (inches)
WR650 1.12 - 1.70 650-213A-2-2 650-214A-2-2 4.00 8.9
WR430 1.70 - 2.60 430-213A-2-2 430-214A-2-2 4.00 8.3
WR340 2.20 - 3.30 340-213A-2-2 340-214A-2-2 4.00 8.1
WR284 2.60 - 3.95 284-213A-6-6 284-214A-6-6 4.00 7.9
WR229 3.30 - 4.90 229-213B-2-2 229-214B-2-2 4.00 7.8
WR187 3.95 - 5.85 187-213A-6-6 187-214A-6-6 3.00 7.7
WR159 4.90 - 7.05 159-213B-2-2 159-214B-2-2 3.00 7.7
WR137 5.95 - 8.20 137-213B-2-2 137-214B-2-2 2.25 7.6
WR112 7.05 - 10.0 112-213B-6-6 112-214B-6-6 2.25 7.5
WR90 8.20 - 12.4 90-213A-6-6 90-214A-6-6 2.25 7.5
WR75 10.0 - 15.0 75-213B-6-6 75-214B-6-6 2.25 7.6
WR62 12.4 - 18.0 62-213B-6-6 62-214B-6-6 2.25 7.4
WR51 15.0 - 22.0 51-213B-6-6 51-214B-6-6 2.25 7.4
WR42 18.0 - 26.5 42-213B-6-6 42-214B-6-6 2.25 7.3
WR34 22.0- 33.0 34-213B-6-6 34-214B-6-6 2.25 7.3
WR28 26.5 - 40.0 28-213B-6-6 28-214B-6-6 2.25 7.3
Ordering Information
Waveguide Passive
Dehydrator
WR -Mod M -F1 -F2
Example part number:  187 -213 -A -6 -6
Waveguide Size: (WR)
WR28 thru WR650 available
       
Basic Model No.: (-Mod)
213=Standard Model, 214=Self-Pumping Model
     
Material (M): A=Aluminum, B=Copper/Brass    
Flange 1 (-F1): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke    
Flange 2 (-F2): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke
See ATM Standard Flange page for more info.

* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered for your needs by using the Model # code system to the left.

 

Replacement Desiccant Cartridges For Passive Dehydrators / Dryers
Description Model No Outline Dwg

Extra canisters can be ordered using the model number to the right. This is the standard spare canister for all waveguide sizes.

PHC100 Dwg

Extra canisters can be ordered using the model number to the right. This is the standard spare canister for all waveguide sizes with Check Valve

PHC100V Dwg

 

Primary Sidebar

Search for:

Components Menu

›   Coaxial Components
›   Ka-Band Satcom Components
›   Space Qualified Components
›   Waveguide Components

Latest News and Videos

  • Narda-ATM Re-Certified By NQA for ISO-9001:2015

  • Home
  • Coaxial Components
  • Waveguide Components
  • Ka-Band Components
  • Space Qualified Components

Copyright © 2023 · Narda-ATM