The Alltest ACW-499 Panel Walk-In chamber (Thermotron WP-499) is a large-format environmental testing chamber designed for climatic simulation and product validation across temperature and humidity extremes. With 499 cubic feet (14,132 liters) of usable workspace, the unit accommodates substantial test articles while maintaining precise control over temperature, humidity, and dewpoint conditions. Panel construction with cam action speed locks and embedded steel straps ensures structural integrity and environmental seal stability.
Technical Specifications
Workspace Dimensions (Internal):
• Width: 85 inches (216 cm)
• Depth: 108 inches (274 cm)
• Height: 94 inches (239 cm)
• Volume: 499 cubic feet (14,132 liters)
Temperature Range:
• Single-stage refrigeration: −34°C to 85°C (−29°F to 185°F)
• Cascade refrigeration: −68°C to 85°C (−90°F to 185°F)
Humidity and Dewpoint:
• Standard: 20% to 95% RH (dewpoint +5°C to +65°C; max dry-bulb +70°C)
• Optional low humidity: 5% to 95% RH (dewpoint −10°C to +65°C; dry-bulb +5°C to +70°C)
Structural and Thermal:
• Insulation: 4-inch (10 cm) urethane
• Interior surface: stainless steel or aluminum
• Exterior surface: patterned aluminum or painted
• Floor load capacity: 600 lbs/ft² (272 kg/m²)
• Corner posts: 90-degree precision alignment
– Key Features
Thermotron 8800 Controller with 12-inch color touchscreen provides Windows-based operation. Multi-level password security protects test data. Product Temperature Control (PTC) accelerates product stabilization. Optional Product Dewpoint Control prevents condensation during transitions. System Monitor diagnoses refrigeration anomalies. Activity Log retains chamber history exceeding 15 years. Test data exports to spreadsheet formats.
– Typical Applications
Electronics reliability validation, material durability assessment, electrostatic discharge (ESD) testing with optional desiccant dryer, thermal cycling, and accelerated life testing.
– Compatibility & Integration
Optional ThermoTrak II™ networking allows up to 32 controllers to connect to a single PC for centralized multi-chamber monitoring and data management.
