-70℃ Extreme Low Temperature Weather Resistance Test Chamber
Designed for testing materials and components under extreme cold conditions, our -70℃ Weather Resistance Test Chamber integrates temperature, humidity, altitude, light, and fresh air into a single system. With a linear cooling rate of 5℃/min down to -70℃, it enables rapid thermal cycling for failure analysis. The chamber features an SS304 inner chamber, water cooling, and complete safety interlocks. It meets ISO9001, ISO14001, and CE standards, supporting industries such as aerospace, automotive, and military.
Key Selling Points
- Reaches -70℃ with 5℃/min cooling: Rapid cool-down accelerates testing cycle times and improves throughput for cold-chain and electronics testing.
- Uniform distribution at ≤2℃: Ensures consistent test conditions across the entire chamber for reliable data.
- Altitude simulation to <7.6kPa: Combines low temperature with high altitude to mimic conditions in aerospace and high-elevation applications.
- Wide humidity control 15-98%RH: Allows precise moisture simulation for corrosion and condensation testing.
- Integrated solar radiation 280-3000nm: Provides full-spectrum light exposure for combined weathering stress tests.
- Energy-saving design and low noise: Reduces operational costs and meets workplace comfort requirements.
Technical Specifications
| Test Volume | 3m³, 6m³ or customizable |
| Temperature Range | -70℃ ~ +150℃ |
| Temperature Uniformity | ≤2℃ |
| Temperature Fluctuation | ±0.5℃ |
| Temperature Deviation | ±2℃ |
| Heating / Cooling Rate | 5℃/min (linear, -70℃ ~ +150℃) |
| Humidity Range | 15%RH ~ 98%RH (±3%RH) |
| Low Pressure Extreme | <7.6kPa |
| Fresh Air Volume | 500 ~ 2000 L/min (adjustable) |
| Fresh Air Temperature | 0℃ ~ 60℃, -20℃ ~ 60℃, -40℃ ~ 60℃ (optional) |
| Light Wavelength | 280nm ~ 3000nm |
| Irradiance Intensity | 55 ~ 1200 W/m² |
| Power Supply | AC380V ±10%, 50Hz ±1, three-phase four-wire + grounding (3/N/PE), grounding resistance <4Ω |
| Max System Power | Approx. 123.8KW (subject to final engineering design) |
| Max System Current | Approx. 212.3A (subject to final engineering design) |
| Cooling Method | Water cooling |
Models and Options
Available in 3m³ and 6m³ volumes with customizable dimensions. Temperature range may be configured to -70℃, -50℃, or -20℃ per requirement. Fresh air temperature optional: 0-60℃, -20-60℃, -40-60℃.
Materials and Structure
Inner chamber fabricated from SS304 stainless steel; outer shell from powder-coated carbon steel. The chamber is designed to maintain low temperature stability and prevent frosting, with a robust door sealing system. Includes safety interlocks and automated data logging.
Applications
Ideal for cold-start testing of automotive electronics, aerospace instrumentation, military equipment, and durability tests for materials exposed to arctic conditions.
Customization
Customizable test volume, temperature range, fresh air temperature, and mounting interfaces. We also offer optional vibration integration for combined T/H/altitude/vibration tests.
FAQ
1. How is -70℃ achieved?
The chamber uses a cascade refrigeration system with water cooling to achieve -70℃ at a rate of 5℃/min.
2. Can the chamber operate at -70℃ and 95%RH simultaneously?
Yes, the chamber controls temperature and humidity independently within the specified range, but extremely low temperatures may limit humidity upper range; please consult our engineers.
3. What fresh air volume is available?
Fresh air is adjustable from 500 to 2000 L/min with optional temperature conditioning.
4. Does the chamber support altitude testing at low temperature?
Yes, low pressure down to <7.6kPa can be combined with low temperature to simulate high-altitude cold conditions.
5. What safety features are included?
The chamber includes complete safety interlock protection, over-temperature and over-pressure alarms, and grounding protection.
6. Can the light simulation be used simultaneously with other conditions?
Yes, light (280-3000nm) can be activated concurrently with temperature and humidity for combined weathering tests.
Inquiry Information
Contact us at info@envsin.com or WhatsApp +86 15013523936 for specifications and pricing.
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