Views: 2 Author: Site Editor Publish Time: 2025-08-21 Origin: Site
In high-tech fields such as aerospace, defence, and automotive electronics, products are never faced with a single environmental challenge. In the real world, sudden temperature changes, humidity corrosion, vibration impacts, and low-pressure environments often occur simultaneously. This requires testing equipment to simulate such multi-factor coupled extreme environments. Sanwood Technology's Four Comprehensive Test Chamber meets the requirements of MIL-STD-810H Method 520.5, providing a one-stop solution for your product reliability verification.
Standard Interpretation
MIL-STD-810H Method 520.5 is a U.S. military standard specifying comprehensive reliability testing methods for equipment under composite environmental conditions. It primarily simulates extreme environments where multiple factors such as temperature, humidity, vibration, and altitude (low pressure) overlap, to evaluate the equipment's overall performance under complex conditions. Key points include:
Test Parameters:
Temperature Range: Typically covers -40°C to +70°C, simulating extremely cold or desert environments.
Humidity Conditions: Up to 95% RH, testing moisture resistance and condensation effects.
Altitude Simulation: Low-pressure testing corresponds to altitudes above 15,000 metres, evaluating heat dissipation and sealing performance.
Technical Parameters of Sanwood Technology's Four Comprehensive Test Chamber
Sanwood Technology's Four Comprehensive Test Chamber can be customised according to customer parameter requirements. The following are the basic technical parameters of the four-in-one test chamber:
Temperature Range: -70°C to +180°C
Temperature Fluctuation: ≤±0.5°C (unloaded, steady-state condition)
Temperature Uniformity: ≤1.5°C (-40.0°C to +100.0°C) (unloaded, atmospheric pressure steady-state condition)
≤2.0℃ (+100.1℃ to +180.0℃ or -70.0℃ to -40.1℃) (unloaded, constant pressure, steady-state conditions)
Temperature deviation: ≤±2℃ (unloaded, constant pressure, steady-state conditions)
Cooling rate: +180.0°C to -70.0°C within approximately 100 minutes (1.0 to 3.0°C/min)
(Optional linear or non-linear: 1.0°C, 3.0°C, 5.0°C, 10.0°C, 15.0°C, 20.0°C/min)
Heating rate: -70.0°C to +180.0°C within approximately 60 minutes (3.0 to 5.0°C/min)
(Optional linear or non-linear: 1.0°C, 3.0°C, 5.0°C, 10.0°C, 15.0°C, 20.0°C/min)
Humidity range: 10% RH to 98% RH
Humidity deviation: +2% RH, -3% RH (when >75% RH, at atmospheric pressure, no load, and in a steady state)
±4% RH (when ≤75% RH, at atmospheric pressure, no load, and in a steady state)
Humidity fluctuation: ≤±2.5% RH (at atmospheric pressure, no load, and in a steady state)
Humidity uniformity: ≤±3% RH (at atmospheric pressure, no load, and steady state)
Pressure range: Atmospheric pressure to 0.5 kPa, atmospheric pressure to 0.5 kPa, ≤30 minutes;
Pressure fluctuation: ≤±2% (at ≥25 kPa)
≤±5% (at 4 to 25 kPa)
≤±0.1 kPa (≤4 kPa)
Air pressure deviation: ≤±2 kPa (at atmospheric pressure to 40 kPa)
≤±5% (at 2 to 40 kPa)
≤±0.1 kPa (at ≤2 kPa)
Complies with national standard GB/T 2423.21-2008
In today's increasingly stringent quality requirements, traditional single-factor sequential testing can no longer meet reliability standards. The Sanwood Technology's Four Comprehensive Test Chamber can simulate multiple environmental conditions and meets the MIL-STD-810H Method 520.5 testing standard, helping you comprehensively simulate the product's real-world usage environment, identify and resolve potential issues in advance, and ensure product reliability! In addition to the four-in-one test chamber, we have also developed Walk-in Environmental Test Chambers, AGREE Test Chambers, ESS Test Chambers, and more, and offer customisation services.
For professional testing solutions, please contact Sanwood Technology, and we will tailor professional services to your specific needs.
