Temperature/Altitude/Humidity Test Chambers

»EA & EAH Series
Temperature/Altitude/Humidity chambers are typically used to simulate test conditions for components and subassemblies designed to meet military specifications and/or for use in aeronautical, space engineering, automotive, computer, electronics, packaging, and meteorological fields.

Envirotronics' EA (temperature/altitude) and EAH (temperature/altitude/humidity) chambers are designed to allow the user to perform temperature, humidity, and altitude condition testing in one combined test chamber More than one condition can be created simultaneously to satisfy many types of test requirements. Our EA and EAH Series chambers are designed to simulate altitude conditions up to 100,000 ft. They are also designed to offer simultaneous temperature/altitude testing from site altitude to 35,000 ft. Humidity tests can be conducted at site altitude only.

The EA/EAH chambers are available in 8, 18, 27, 40, and 64 cu. ft. models. If your requirements fall outside the realm of these standard sizes, Envirotronics will design a chamber to meet your specific needs.

»Standard Features:

  • Dual air circulation system with solid stainless steel jack shaft(s)
  • Nichrome wire heating elements with fail safe fusible link
  • Solid state heat switching
  • Heavy duty hand-wheel door latch
  • Full front opening door
  • 8" thick walls
  • Internal pressure member*
  • Solid state altitude sensor
  • interior light
  • ETL (UL STD 508A) approved main power panel

»Vacuum System:

  • Internal altitude is controlled using pneumatically controlled climb and dive valves

»Instrumentation Systems:

  • Solutions Plus Programmer/ Controller
  • Digital indication of set-point and temperature
  • Type "T" thermocouple sensor
  • Digital communications optional
  • Event or alarm outputs
  • Guaranteed soak and automatic hold

*EAH models are constructed with an internal pressure member. EA Models can be quoted with an external pressure member construction.

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ET & EH Series

»Temperature Range:

  • -68°C to +177°C (site altitude to 35,000ft)
    Control Accuracy: ±1.1°C

»Humidity Range:

  • 20% to 95% relative humidity
    (at site altitude only)
    as limited by a 4.5°C dewpoint temperature and a maximum dry bulb temperature of +65°C.

»Altitude Range:

  • Site to 100,000 ft.
    (humidity uncontrolled during altitude testing)

»Refrigeration System:

  • Water-cooled cascade condenser
  • Copper tubing cooling coils with aluminum fins
  • Cascade refrigeration system
  • High temperature silphosed or silver soldered joints
  • Semi-hermetic compressors
  • HFC refrigerants

»Optional Features:

  • Stainless steel wire shelves
  • Heavy duty casters
  • Running time meter
  • Refrigeration gauges
  • Main power electrical disconnect switch
  • Low watt density sheath heaters for temperature control above 35,000 ft.
  • 3" I.D. weld neck access port with insulating plug and blank flange
  • Refrigeration section quiet package
  • Dry air purge
  • Chart recorder

Please direct any inquiries to:
›sales@envirotronics.com