High and Low Temperature & Low Pressure Test Chamber

The LAP Series High-Low Temperature & Low Pressure Test Chamber is an environmental testing apparatus engineered to simulate composite conditions of high-altitude low pressure and extreme thermal cycling. This equipment facilitates singular or combined environmental simulations of “low temperature → high temperature → low pressure” sequences, accurately replicating specialized climatic conditions encountered in aerospace applications and high-altitude regions.

Employing a modular architecture, this series incorporates a fully hermetic compressor from TECUMSEH for the refrigeration subsystem and an independent nickel-chromium alloy heating element for the thermal subsystem, ensuring consistent temperature transition rates. Low-pressure regulation is achieved through a high-precision electronic pressure transducer and an optimized vacuum system, enabling precise control of pressure differentials.

The apparatus includes comprehensive safety protection mechanisms and a proprietary LCD touchscreen control interface, optimizing testing efficiency while maintaining operational safety protocols.

Compliance Standards:

• IEC 60068-2-40:2008 Environmental testing – Part 2-40: Tests – Test Z/AM: Combined cold/low air pressure test
• IEC 60068-2-41:2008 Environmental testing – Part 2-41: Tests – Test Z/BM: Combined dry heat/low air pressure test
• ASTM D6653-2022 Standard Test Methods for Determining the Effects of High Altitude on Packaging Systems by Vacuum Method
• ISO 2873:2018 Packaging – Complete, filled transport packages and unit loads – Low pressure test
• MIL-STD-810H Method 500.12 Environmental Engineering Considerations and Laboratory Tests – Low Pressure (Altitude)
• GB/T 10590-2008 Technical specifications for high and low temperature low pressure test chambers
• GB/T 11159-2008 Technical specifications for low pressure test chambers
• GB/T 2423.25-2021 Environmental testing – Part 2: Test methods – Test Z/AM: Combined cold/low air pressure test
• GB/T 2423.26-2021 Environmental testing – Part 2: Test methods – Test Z/BM: Combined dry heat/low air pressure test
• GJB 150.2A-2009 Laboratory environmental test methods for military equipment – Part 2: Low pressure (altitude) test
• GJB 360B-2009 Test methods for electronic and electrical components – Low pressure test

Technical Specifications:

LISUN Model: LAP-100*, LAP-250*, LAP-500*, LAP-010*, LAP-015*, LAP-020*

Working Chamber Dimensions (cm): 41×55×45, 50×60×75, 70×80×90, 100×10… (specifications truncated)