DryLine Dehydrator, Low-pressure membrane, 19 in

MFR PART #  MT500B-81326
PART #  469321
Minimum 1 Each
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The most advanced mid-sized automatic membrane dehydrator has now been added to the Andrew family of DryLine pressurization equipment. The MT500B dehydrator provides the industry with improved microprocessor based controls and extended dry air output. Patented membrane drying technology has been further improved to require less operating pressure, thereby extending compressor life. The MT500B is an automatically activated unit designed for mid volume air-dielectric or waveguide systems of 3396 liters (10 to 120 cubic feet). The patented lifetime membrane dryer removes moisture from the air to help maintain a positive pressure on the transmission lines to prevent moisture intrusion.; Technically Advanced DryingThe MT500B uses a patented world-class membrane drying technology to provide consistent dry air production over the life of the unit. The automatic membrane drying circuit is proven to perform better than refrigerant or desiccant technologies over time. The membrane eliminates complexities and maintenance cycles that are common with PSA. There are no desiccants or drying media to replace. Alarm OptionsThe MT500B includes a low-pressure alarm which closes at 1.0 psig (68 mbar) and an excess run alarm. The standard alarm package provides a single contact closure for the three alarms, functioning as a summary alarm, high humidity alarm factory set at 7.5% RH, as well as discrete contacts for each alarm. An approved terminal block is provided for the alarm outputs. Electrical ConnectionsUnits designed for use throughout the world. The ac input to the compressor is rated for both 50 and 60 Hz operation. Units are equipped with a UL/CSA cord set or a strip leads harmonized cord set. Extended Compressor LifeThe most reliable, robust oil-free compressor is combined with the low pressure membrane technology, resulting in the most dependable system. The product is backed by the best warranty in the industrythree years or three thousand hours. Microprocessor Control and Monitoring with Digital DisplayCompressor control is managed by a microprocessor, improving accuracy and reliability over mechanical pressure switch controls. System pressure and status is presented on the digital LCD display. Mounting FlexibilityThe MT500B features a versatile mounting capability. Featuring unique one-person mounting, the unit mounts directly in standard 19 inch relay racks. The unit may also be mounted directly to a wall by moving the mounting flanges to the rear of the housing. Heavy-duty rubber feet are provided fo


  • Robust cable design
  • Complies with applicable standards
  • Provides very stable low temperature performance
  • Cable withstands typical installation forces with good safety margin
  • Reduces installation loads due to reduced weight and diameter
  • Provides performance equivalent to gel-filled cable designs
  • Improves network deployment speed for capturing revenues/starting services sooner

Specification Description

Flow Rate (Nominal): 0.50 scfm (14.20 slpm)
Port Count: 1
Excess-Run Alarm: 10 Min, Factory Set
Operating Temperature: -10 to 50 deg C (14 to 122 deg F)
Cut In Pressure: 2 psig (13.8 kPa)
Suggested Circuit Breaker Size: 20 Amp
Power Consumption (Average): 225 Watt
Voltage: 240 Volt AC +/-10%
Volume Capacity (Minimum): 283.2 L (10.0 Sq ft)
Port Type: 3/8 Inch PE Tube
Includes: 3/8 Inch Polyethylene Tubing, 90 Degree Elbow Fitting, Male Connector Fitting, Needle Valve, Power Cord, Power Cord Connector Lock, PTFE Tape, Screws
Volume Capacity (Maximum): 3398.0 L (120.0 Sq ft)
Cut Out Pressure: 5 psig (34.5 kPa)
Rack Units: 6
Power Frequency: 60/50 Hz
Low-Pressure Alarm: 68 mbar, 7 kPa, 1 psig
High-Humidity Alarm: 7.5% RH, Factory Set
Voltage Type: AC
Dehydrator Type: Automatic Membrane
Dew Point: Better Than -45 deg C (-50 deg F) At 95% RH At +40 deg C (+104 deg F)
Alarm Type: Discrete
Rack Type: EIA 19 Inch
Circuit Breaker Requirement: Electrical Connections Require Separate Circuits for Dehydrator Installation
Power Cord: Europe Power Cord With Stripped Leads
Cut In/Out Pressure Type: Factory Set
Mount Type: Floor, Rack, Shelf, Wall
Alarm Contact Rating: Form C Dry Contacts, 2 Amp at 30 Volt DC
Power-Fail Alarm: Loss Of Input Power
Power Phase: Single
Dimension: 17.0 Inch Width x 12.6 Inch Depth x 10.4 Inch Height (431.8 mm x 320.0 mm x 264.1 cm)

Tech Info

ISO 9001:2008: Designed, manufactured and/or distributed under this quality management system


Device MISC
Technology ACCESSORY
UNSPSC Code 43223108

Spec Sheet

Spec Sheet

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