The Cincinnati Sub-Zero ZH-8-1-1-H/AC is a benchtop environmental test chamber engineered for precise temperature and humidity control across an 8 cubic foot working space. It maintains temperature from −70°C to +170°C and relative humidity from 20% to 95% RH, making it suitable for product reliability assessment, material performance evaluation, and accelerated life testing under controlled environmental conditions.
## Technical Specifications
• **Working Space:** 8 cu. ft.
• **Temperature Range:** −70°C to +170°C (−70°F to +340°F)
• **Humidity Range:** 20% to 95% RH
• **Heat Rejection:** Approximately 4,500 watts (15,000 BTU/hr) maximum during cooling operation
• **Power Requirements:** 208V, three-phase, 60 Hz
• **Electrical Load:** 26 full load amperes (3-phase); 35 full load amperes (1-phase)
• **Outer Dimensions:** Approximately 40″ W × 51″ H × 41″ D
## Key Features
• Watlow F4 Programmable Controller with EIA-232/485 computer interface
• Solid-state humidity sensor for accurate RH control
• Two access ports (2.875″ standard size) on left and right sides
• Fog-free viewing window: 12¾” H × 19¾” W
• Interior lighting with integral switch
• One shelf standard; additional shelving available
• Heavy-duty 75 mm (3 in) wheel casters for mobility
• Zero ozone depletion refrigeration system with pressure gauges
• High temperature protection for refrigeration circuit
• Digital temperature limit and alarm display
• UL & C-UL-508 listed sub-panel
• Humidity nozzle, filter, reservoir, and pump screen included
## Typical Applications
Temperature and humidity profiling per IEC standards; tin whisker evaluation; stress testing at conditions including 25°C/60% RH, 40°C/65% RH, 65°C/91% RH, 85°C/80% RH, and extreme temperatures to ±170°C and −70°C.
## Compatibility & Integration
EIA-232/485 serial interface standard. IEEE-488 computer interface available as optional accessory. Compatible with Z-Series chamber ecosystem.
