Walk-in environmental chamber

What Are Walk-In Environmental Chambers?

Moisture buildup can be destructive to products, especially electronics, causing corrosion and oxidation. Russells’ solid construction W-Series temperature and humidity test chambers afford maximum durability and performance for your most demanding simulation test requirements.

Controlled Testing Environment Capabilities

• Steady-state or cyclical temperature and temperature/humidity tests
• Rapid-rate temperature/humidity cycling tests (>9°F/5°C/min.)
• Elevated temperature heat aging (>356°F/180°C)
• Ultra low temperature cryogenic tests to -180°C/-292°F

• Temperature range for single stage refrigeration:
  • -32°C/-25°F to 180°C/356°F
• Temperature range for cascade refrigeration:
  • -73°C/-100°F to 180°C/356°F
• Humidity Range:
  • 10% to 95% RH within the bounds of a 185°F/85°C max. dry bulb and a 40°F/4°C min. dewpoint
• Removable access panels to serviceable components
• Continuous TIG welded 304 stainless interior liner
• Heavy duty welded steel frame
• Non-settling oven grade fiberglass insulation
• Heavy duty reinforced floor construction
• Chamber floor drain(s), spill containment
• Multiple door configurations and sizes
• Dual silicone door gaskets with mitered and vulcanized corners
• Multi-pane tempered heated viewing window minimizes condensation
• Durable textured enamel painted finish *custom colors available
• Quick response vapor generator with replaceable Inconel immersion heaters
• Vapor generator low water safety protection
• Humidity water demineralizer with one cartridge
• Interior lighting with external switch
• Can be equipped with battery testing safety features according to EUCAR hazard safety level

• RussellsOne touchscreen controller temperature and humidity programmer/controller
• Additonal data logging sensors/inputs
• Auto restart timer to automatically restart chamber after power outage
• Remote control panel for unique configuration requirements
• Product Temperature (Cascade) Control
• Additional access ports
• Padlock hasp (lockable open/closed position)
• LN2 or CO2 boost cooling
• Dry air purge to minimize migrating moisture and condensation to control humidity
• GN2 purge system to mitigate condensation and control humidity
• Industrial dehumidification systems
• Combustion/continuous make-up air systems
• Remote (outdoor) refrigeration systems and/or condensors
• Air-cooled or water-cooled refrigeration condenser
• Refrigeration sound-deadening package
• Boost heating
• Main power disconnect switch
• Control panel mounted E-Stop
• Running time meter
• Minimal spark options for battery testing and potentially hazardous test articles
• Ultra-low temperature (cryo) options
• High heat options (temperature only models)
• Multiple voltage options
• NRTL/eSAFE inspection

• Single stage or cascade refrigeration
• Zero ozone depletion refrigerants
• Multiple compressor options
• Cryogenic models available
• Heat only models available
• Copper tube/aluminum fin cooling coil
• High efficiency brazed plate cascade heat exchanger
• Non-bucking automatic heat/cool mode selection with compressor time-out
• High/low/oil refrigeration pressure limit switches
• Inherent compressor overload protection

• Watlow F4T programmer/controller
• Ethernet Modbus TCP communication
• Touchscreen control interface
• Robust graphing and datalogging capability
• Digital Product Safeguard high/low temperature limit with audible alarm
• Solid state humidity sensor

• UL 508A compliant control panel
• All wiring meets National Electric Code (NEC) standards
• System branch circuits individually fused
• 115v control circuitry with integrated isolation transformer
• Full system function switches and indicator lights
• System fault status indicators
• All wiring color coded and labeled
• High temperature failsafe limit

What are Modular Construction Walk-In Temperature & Humidity Chambers?

Russells WM-Series, walk-in environmental test 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)

• 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.

• Through‐wall access ports with foam plugs
• Viewing windows
• Refrigeration gauges
• Refrigeration sound deadening package
• Remote refrigeration systems
• LN2 boost cooling
• Humidity water demineralizer
• Dry air purge system
• Desiccant dehumidifier
• Personnel entrance airlock
• Entry ramp
• Running time meter
• Electrical disconnect switch
• Product safeguard redundant over/under temperature limit
• Circular or electronic chart recorders
• Computer communications, networking, data‐logging software
• Free standing remote instrument console
• Additional safeguards for battery testing

• Low or zero ozone depletion refrigerants
• Energy-saving refrigeration bypass capacity control
• Low stage desuperheater
• Oil pressure switches
• Compressor suction and discharge pressure switches
• Air or 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/NFPA standards
• 120v control circuit transformer
• Fully enclosed electrical panel
• All circuits fused or circuit breaker protected
• Full system function switches with system status pilot lights
• Incandescent interior lighting
• All wiring numbered or color coded
• High Temperature limit safety
• Master heating circuit contactor
• Air circulator/heater interlock
• Balanced load on 3 phase power
• 3rd party NRTL/CSA/CE marking available

What are Walk-In Environmental Rooms?

Our environmental test rooms are climate-controlled and allow testing for long-term stability, accelerated testing, humidity, and forced long-term stability. We offer the widest range and selection of customizable sizes in environmental rooms used in a variety of industries including pharmaceutical, cold storage, cultivation rooms, incubation, concrete curing, film/photography storage, and more. Our environmental rooms are compliant with NIH, USDA, and other common industry standards.

• Modular panelized construction with polyurethane foam insulation core (R-value 31+)
• Wall thickness: 4” (100mm)
• Available wall panel finishes: galvanized steel, steel with baked enamel, embossed aluminum, stainless steel
• Floor loading to 600 lbs/ft₂ (2900 kg/m₂) evenly distributed
• Available door sizes from 34” to 60” in multiple configurations
• Hardware hinges and latches are heavy duty polished castings
• Microprocessor temperature/humidity programmer controller mounted in console with acrylic cover
• Temperature range: -30˚C (-22˚F) to +60˚C (+140˚F)
• Humidity Range: 5% to 95% RH

• Through-wall access ports with foam plugs
• Viewing windows
• Refrigeration gauges
• Refrigeration sound deadening package
• Water cooled condenser
• Humidity water demineralizer
• Dry air purge system
• Desiccant dehumidifier
• Ante rooms
• Entry ramp
• Running time meter
• Electrical disconnect switch
• Floor screeds for attachment of floorless chamber to existing building floor
• Key locked instrumentation console
• Outdoor refrigeration units
• Circular or electronic chart recorders

• Low or zero ozone depletion refrigerants
• Air cooled condenser
• Compressor overload protection
• All piping joints silfos or silver soldered
• Refrigeration/condenser skid

• UL 508A compliant control panel
• All wiring meets National Electric Code (NEC) standards
• System branch circuits individually fused
• 120v control circuitry
• Full system function switches and indicator lights
• System fault status indicators
• All wiring color coded and labeled
• High temperature failsafe limit