Cryogenic Blackout Test Chamber

The DHT® Cryogenic Blackout Test Chamber is a specialized environmental simulation system developed by Duohe Test Equipment for low-temperature light-sensitive testing scenarios. Designed to support extreme cryogenic conditions, the chamber achieves stable temperature control down to -100°C, making it ideal for evaluating the thermal and optical performance of sensors, infrared devices, aerospace optics, and night vision systems under total blackout conditions. The chamber features a light-tight, matte-black interior and precision-grade thermal insulation to prevent both thermal leakage and optical interference. Its advanced dual-stage cascade refrigeration system ensures uniform temperature distribution across the workspace, while the DHSPLCON intelligent control platform enables programmable temperature profiles, long-duration soak testing, and real-time data logging. With a corrosion-resistant 304 stainless steel structure and low-emissivity interior finish, the chamber minimizes reflective interference and supports high-accuracy dark condition experiments.
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Benefits

Precise Simulation of Extreme Cold-Dark Environments: The chamber can precisely simulate cold-dark environments ranging from standard temperatures to as low as -60°C. By controlling temperature, humidity, and light conditions, it closely replicates product performance in real-world space environments.

Efficient Temperature Control System: Capable of rapidly cooling and maintaining a stable low-temperature environment, ensuring precise temperature control throughout the test and ensuring reliable test data.

Light Simulation and Isolation Design: Features a fully isolated dark environment that simulates conditions without sunlight radiation, effectively replicating cold-dark conditions.

High-Efficiency, Energy-Saving System: The device operates efficiently with low power consumption, reducing operational costs and minimizing environmental impact, in line with green and eco-friendly standards.

Comprehensive Safety Protection Mechanism: Equipped with multiple protection systems, including over-temperature, over-pressure, and overload safeguards, the chamber ensures that any abnormal conditions during testing are detected and addressed promptly, ensuring the safety of both the equipment and the test samples.

Features Video

Specifications

Temperature Range (°C) 0~180;-40~180;
-65~180;-70~180
Temperature Fluctuation (°C) ≤±1.0 (atmospheric pressure, no load)
Temperature Uniformity (°C) ±2.0 (atmospheric pressure, no load)
Temperature Gradient (°C) ≤2.0
Temperature Rate (°C/min) Heating/Cooling Rate: 0.5 ~ 1.0°C/min
Non-linear Adjustable (atmospheric pressure, no load)
Temperature Deviation (°C) ≤2.0 (atmospheric pressure, no load)
During low pressure composite testing: ±3
Pressure Recovery Rate (kPa/min) ≤10
Pressure Range (kPa) Customizable
Pressure Accuracy (kPa) 0.1
Pressure Variation Rate (kPa/min) ≤10
Available Temperature Range for Humidity Control (°C) 15 ~ 95
Relative Humidity Range (%RH) 20~98
Humidity Accuracy (%RH) ±1.0 ~±3.0