The Alltest ACW-1261 Panel Walk-In is a modular environmental test chamber engineered for thermal and humidity simulation of large assemblies and products. With 1,261 ft³ of workspace, this system delivers temperature control from −34°C to 85°C (single-stage) or −68°C to 85°C (cascade), humidity from 20% to 95% RH, and dewpoint ranging 5°C to 65°C. Lightweight insulated panels with locating pins and cam-action speed locks enable rapid field assembly and customization.
Technical Specifications
• Workspace Volume: 1,261 ft³ (35,712 L)
• Workspace Dimensions (W × D × H): 131 × 177 × 94 inches
• Temperature Range (Single Stage): −34°C to 85°C
• Temperature Range (Cascade): −68°C to 85°C
• Humidity Range: 20% to 95% RH
• Dewpoint Range: 5°C to 65°C
• Panel Insulation: 4 inches (10 cm) urethane
• Interior Surface: Stainless steel or aluminum
• Exterior Surface: Patterned aluminum or painted
• Floor Load Rating: 600 lbs/ft² (272 kg/m²)
– Key Features
• Modular panel construction with precision locating pins and speed locks for installation without external tools
• Access ports in standard sizes (3″, 4″, 5″, 6″, 8″) constructed of stainless steel
• Product Temperature Control (PTC) reduces product ramp times by up to 50%
• Humidity system supports direct facility hook-up or water reservoir operation with integrated steam generator
• Low Humidity Option extends operation to 5 grains/lb dry air with humidity range 5% to 98% RH and dry air purge for ultra-low dewpoints
• Optional water purification and recirculation system
• Conditioning module available in standard or custom configurations
– Optional Accessories
• 8800 Chamber Data Acquisition system
• Door interlocks and electronic humidity sensor
• Product dewpoint control and quiet package
• Serial communications panel and system monitor
• Reinforced floors and shelving
– Typical Applications
Thermal cycling, accelerated life testing, reliability qualification, and environmental stress screening of large subassemblies, enclosures, and finished goods requiring precise long-term temperature and humidity control.
– Compatibility & Integration
Custom chamber sizes beyond standard offerings are available. Chamber workspace specifications reflect the interior volume prior to plenum interface; the conditioning module plenum utilizes a portion of the interior workspace.
