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EA Series Altitude Test Chamber

Weiss Technik altitude test chambers, EA (temperature/altitude) and EAH (temperature/altitude/humidity), are designed to allow the user to perform temperature, humidity, and altitude condition testing in one combined test chamber, with more than one condition created simultaneously to satisfy many types of test requirements.

Key Differentiators

  • Designed to simulate altitude conditions up to 100,000 feet.
  • Offer simultaneous temperature/altitude testing from site altitude to 65,000 feet.
  • Humidity test can be conducted at site altitude only
  • The innovative WEBSeason® user interface allows you to program, control and monitor your tests at any time and anywhere – even from your tablet or smartphone

The test chambers are available in 18, 37, and 55 cu. ft. models. If your requirements fall outside the realm of these standard sizes, Weiss Technik will design a chamber to meet your specific needs.

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


Model EA/EAH 18 EA/EAH 37 EA/EAH 55
Test Space Volume
(Cu. Ft./Liters)
18/510 37/1048 55/1557
Temperature Range +180°C to -70°C (+356°F to -94°F)
Altitude Range Up to 100,000 ft (30.48 km) Up to 100,000 ft (30.48 km) Up to 100,000 ft (30.48 km)
Humidity Range 10% to 98%
External Width 52″ (1321mm) 60″ (1524mm) 60″ (1524mm)
External Depth 94″ (2388mm) 94″ (2388mm) 114″ (2896mm)
External Height 95″ (2413mm) 103″ (2616mm) 103″ (2616mm)


Product Features

  • Dual air circulation system with solid stainless steel jack shafts
  • Nichrome wire heating elements with fail safe fusible link
  • Solid state heat switching
  • Full front opening door
  • Heavy duty hand wheel actuated door latching
  • 8” thick walls
  • Internal pressure member construction
  • Solid state altitude sensor
  • Interior light
  • ETL (UL STD 508A) approved main power panel
  • Instrumentation
  • Precise Touchscreen Programmer/Controller
  • Digital indication of set-point and temperature
  • Type “T” thermocouple sensor
  • RS232 and RS422 digital communications
  • Event or alarm outputs
  • Guaranteed soak and automatic hold
  • Refrigeration System
  • Water cooled condenser
  • Copper tubing cooling coils with aluminum fins
  • Cascade refrigeration system
  • High temperature silphosed or silver soldered joints
  • Semi-hermetic compressors
  • HFC refrigerants

Technical Data

Additional Options

  • 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
  • Custom sizes available consult with your local salesperson
  • Many options available – contact your local salesperson for complete list


Product Inquiry




3881 N. Greenbrooke Dr. SE
Grand Rapids, MI 49512

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