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Walk-In Modular Temperature/Humidity Chambers

  • Temperature Chambers and Humidity Chambers Walk-In with Modular Construction – Flexible Customization – The WM Series

    Russells modular construction, walk-in test chambers give the maximum flexibility in both chamber size and performance for your most demanding temperature/humidity testing requirements. Russells WM-Series chambers allow manufacturers to simulate how their products will perform in temperature and humidity conditions. These test chambers can be manufactured as dynamometer rooms also.

  • Russells WM-Series, walk-in chambers can provide the following combination of controlled testing environments:


    • Steady state temperature and temperature/ humidity tests
    • Moderate temp./humidity cycling test (< 9°F/5°C/min.)
    • Moderate temperature heat aging (<185°F/85°C)

Chamber Features

  • Economical cost
  • Ease of move in and install
  • Wide range of size and performance
  • Engineered cooling modules


  • Temperature range for single stage refrigeration: -13°F/-25°C to 185°F/85°C
  • Temperature range for cascade refrigeration: -100°F/-73°C to 185°F/85°C.
  • Humidity Range: 10% to 95 RH within the bounds of a 158°F/70°C max. dry bulb and a 40°F/4°C min. dewpoint.

Russells WM-Series temperature /humidity test chambers are available in any imaginable size. A Russells application engineer can assist you in selecting the chamber configuration and size that is most economical for your custom testing needs.

Modular Construction Walk – in Temperature / Humidity Test Chambers

Standard Features
  • Modular chamber construction with pre-fabricated wall panels produced with a urethane foam insulation core.
  • Wall insulation, 13k factor.
  • Available wall thickness: 4″ (100mm) or 5″ (125mm).
  • Available wall panel finishes: galvanized steel, steel w/baked enamel, embossed aluminum, stainless steel.
  • Floor loading to 600 Ibs/ft2 (2900 kg/m2) evenly distributed.
  • Available door styles: bifold, full swing, horizontal sliding.
  • Removable access panels for serviceability on ECM units.
  • Low or zero ozone depletion refrigerants.
  • Engineered cooling module. (rear plenum)
  • Energy saving refrigeration bypass capacity control.
  • Low stage desuperheater.
  • Oil pressure switches.
  • Compressor suction and discharge pressure switches.
  • Water cooled condenser.
  • Vapor tank and condenser ASME certified .
  • Compressor overload protection.
  • High stage compressor crankcase heater.
  • Compressor head fans .
  • Low stage oil separator.
  • All piping joints silfos or silver soldered.
  • Stainless steel compressor condensate pans.
  • All wiring meets NEC standards.
  • 120 volt control circuit transformer.
  • Fully enclosed electrical panel.
  • All circuits fused or circuit breaker protected.
  • Full system function switches w/ system status pilot lights.
  • Incandescent interior lighting.
  • All wiring numbered or color coded.
  • High Temperature limit safety.
  • Master heating circuit contactor.
  • Air circulator/heater/high altitude interlock
  • Balanced load on 3 phase power.
Optional Accessories
  • Through-wall access ports w/foam plugs.
  • Viewing windows.
  • Refrigeration gauges.
  • Refrigeration sound deadening package.
  • Remote refrigeration systems.
  • LN2 boost cooling.
  • Air cooled condenser.
  • Humidity water demineralizer.
  • Dry air purge system.
  • Desiccant dehumidifier.
  • Personnel entrance doors.
  • Ante rooms.
  • Entry ramp.
  • Running time meter.
  • System message display.
  • Electrical disconnect switch.
  • Explosion proof electrical system .
  • Floor load spreader plate or tracks.
  • Floor screeds for attachment of “floorless” chamber to existing building floor.
Optional Instrumentation
  • Microprocessor temperature/humidity programmer controller.
  • Solid state humidity sensor on humidity models.
  • Product safeguard redundant over/under temperature limit.
  • Circular or electronic chart recorders.
  • Computer communications, networking, data-logging software.
  • Free standing remote instrument console.