The Darwin Chambers KB030-AA-DA is a single-door environmental chamber delivering precise temperature and humidity control for laboratory research, stability testing, and process validation. This 23.9 cubic foot capacity unit maintains ±0.2°C temperature accuracy and ±0.3% RH humidity accuracy across its standard 2°C to 50°C range and ambient to 90% RH envelope. The chamber employs hot gas bypass refrigeration with CFC-free 134A refrigerant, ultrasonic humidification, and a non-proprietary Fuji Electric PXF4 microprocessor controller featuring autotuning, fuzzy logic, and PID control. Stainless steel door and front construction with aluminum or stainless steel interior options provide corrosion resistance and durability. Quiet operation, tool-less gasket removal, LED interior lighting, and a 2″ I.D. side-wall access port support efficient laboratory workflows. The chamber operates on standard 110 V, 15 A circuits with a 0.25–0.67 hp compressor. Optional upgrades include extended temperature ranges, touchscreen control interfaces, and low-E glass doors. Compatible with third-party controllers from manufacturers including Watlow and Allen Bradley.
## Technical Specifications
• Capacity: 23.9 cubic feet
• Temperature Range: 2°C to 50°C (standard); extended ranges available via optional upgrades
• Temperature Control Accuracy: ±0.2°C
• Humidity Range: Ambient to 90% RH
• Humidity Control Accuracy: ±0.3% RH
• Refrigerant: CFC-free 134A
• Compressor: 0.25–0.67 hp
• Electrical: 110 V, 15 A
## Key Features
• Hot gas bypass evaporator control for uniform temperature distribution
• Factory-engineered capillary tube system with oversized condenser and evaporator for reduced pull-down time
• Epoxy-coated evaporator prevents corrosion
• Ultrasonic humidification system eliminates hot spots
• Fuji Electric PXF4 microprocessor with programmable alarms and calibration capability
• Non-proprietary controller supports third-party integrations
• Positive seal, self-closing doors with 120-degree stay-open feature
• Antimicrobial silver-ion treated door handles
• Door switch-controlled LED interior lighting
• 2″ I.D. access port with cover and insulation plug
## Typical Applications
• Pharmaceutical stability testing
• Materials research and validation
• Biological and environmental testing
• Laboratory process development
## Compatibility & Integration
The KB030-AA-DA supports non-proprietary controller architectures. Compatible with Fuji Electric, Watlow, and Allen Bradley control systems. Optional touchscreen interface available for enhanced operator control.
