The Cincinnati Sub-Zero ZH-32-2-2-H/AC is a benchtop environmental test chamber designed for simultaneous temperature and humidity simulation across broad operating ranges. With a 32 cu. ft. internal volume, the unit accommodates small to medium-sized components and assemblies in quality control, R&D, and validation workflows.
## Technical Specifications
**Temperature Performance**
The cascade refrigeration system delivers -70°C to +180°C operational range with rapid pulldown capability: -54°C in 30 minutes and -70°C in 45 minutes. Single-stage cooling spans -34°C to +190°C with -18°C achieved in 15 minutes and -34°C in 30 minutes. Heating reaches +93°C in 20 minutes and +190°C in 55 minutes.
**Humidity Control**
Humidity regulation operates from 10% to 95% RH (non-condensing) for combined environmental testing.
**Cooling & Heat Rejection**
Mechanical refrigeration with air-cooled condenser dissipates approximately 9,000 W (30,000 BTU/hr) maximum during cooling cycles.
**Electrical**
208/230 V, 3-phase, 60 Hz: 39 A full load
208/230 V, 1-phase, 60 Hz: 51 A full load
**Physical Construction**
Stainless steel interior with insulated, welded exterior. Viewing window: 12¾” H × 19¾” W. Side cable ports: 32¾” L × 2¾” H × 4″ W. Weight: approximately 2,075 lbs.
## Key Features
• Dual-range temperature capability via cascade or single-stage refrigeration selection
• Precision humidity control for repeatable environmental protocols
• Air-cooled condenser eliminates facility water requirements
• Corrosion-resistant stainless steel interior surface
• Multiple cable and sensor access ports
• Built-in safety interlocks and over-temperature protection
• Interior light with switch and heavy-duty casters for mobility
• Touchscreen controller (EZT-570 or EZT-570i)
## Typical Applications
Component qualification, materials testing, accelerated life testing, thermal cycling validation, and environmental stress screening across aerospace, electronics, and industrial sectors.
## Compatibility & Integration
CSZ proprietary EZT-570 / EZT-570i controller standard. Multiple access ports support external instrumentation, data acquisition, and test lead integration.
