Home > Products > Automatic Air Dehydrator ADH®– 3COM


Benefits

  • Improves earth station reliability
  • High energy efficiency
  • Unattended operation
  • International capability

Features

  • Automatic regeneration
  • Direct digital control
  • LED displays for operating and alarm data
  • 120/230 volt 50/60 Hz operation standard
  • English and SI calibration standard
  • S-A and terminal communication protocols
  • CE Certification
  • UL 1950/IEC 950
Photo: ADH-3COM Automatic DehydratorImage: ADH-3COM Rack Dimensions

Description

The ADH–3COM Automatic Dehydrator supplies low pressure -40°F (-40°C) maximum dew point air to keep waveguide and coax dry. The standard pressure is 0.5 psig (34.5 mbar) with 3 psig (207 mbar) and 6 psig (414 mbar) options. Standard features include automatic regeneration, alarm and low pressure relays and an RS-422/RS-485 communications interface thus making unattended operation practical.

The ADH–3COM uses LED displays and indicators to provide a wide viewing angle and good visibility under low-light conditions. Displayed information includes status, operating and fault diagnosis data along with air pump operating time.
The ADH–3COM operates with exceptionally low noise and vibration levels. The dehydrator uses aluminum oxide desiccant for high efficiency. The humidity sensor causes regeneration based upon current dew point rather than at fixed time intervals for additional energy savings and long desiccant life. Dual micro controllers, dual pumps, and solid state circuitry insure reliability. Two ADH-3COM dehydrators can be connected in master/slave configuration to provide redundancy and increase reliability.

The ADH–3COM requires only 5-1/4" of panel space. An internal evaporator eliminates the need for a water drain. The dehydrator operates from 120/230 volts 50/60 Hz. or optionally, 24 VDC or 48 VDC. A user-set jumper selects the display of either SI or English units.

The ADH–3COM consumes a maximum of 150 watts during regeneration and approximately 60 watts otherwise. Thus, this products creates an exceptionally low heat load for an automatic dehydrator.

Specifications

Discharge pressure 0.5 psig (34.5 mbar) standard, 3 psig (207 mbar) or 6 psig (414 mbar) optional
Flow rate 26 ft3/hr (736 l/hr)
Maximum dew point -40°F (-40°C)
Regeneration Automatic, demand
Supply voltage 120/230 volts AC 50/60 Hz
Nominal power 60 watts
Maximum power 146 watts
Alarm relay capacity 240 volts AC at 1 amp SPDT
Communications interface RS-422, 1200 or 9600 baud, 7 bit, even parity, 1 stop bit, DB-9 connector
Pressure connection 1/4" barbed hose fitting
Approximate weight 31.3 pounds (14.2 Kg) rack & wall
95 pounds (43.1 Kg), outdoor
Operating Temperature 32° F to 130° F (0° C to 55° C), rack & wall
-40° F to 130° F (-40° C to 55° C), outdoor
Storage Temperature -40° F to 150° F (-40° C to 60° C)
Dimensions 19" x 19" x 5.25" (48.3cm x 48.3cm x 13.3cm), rack
19" x 21" x 5.25" (48.3cm x 53.3cm x 13.3cm), wall
24" x 24" x 8" (60.0cm x 60.0cm x 20.3cm), outdoor