Qu'est-ce qu'une chambre d'essai mobile ? Un aperçu complet de la fonction, du principe, des avantages et des applications

Écrit par Robin
Ingénieur principal, Test Doaho (DHT®)

Functional Principle and Technical Composition

• Temperature & Humidity Control System It employs two-stage cascade refrigeration (–80 °C to +180 °C) alongside a steam-based humidification/dehumidification system (5 %–98 % RH). A PID algorithm maintains temperature to within ±0.5 °C and humidity within ±1 % RH. DHT®’s exclusive dual-channel condenser design increases the cooling rate to 3 °C/min in the standard model.
• Air Circulation System A 3D vector duct layout combined with an EC centrifugal fan provides continuously adjustable airspeeds from 0.5 to 1.5 m/s. CFD-optimized flow guides ensure internal temperature uniformity of ≤±0.3 °C (per ISO 18562).
• Système de contrôle intelligent Featuring an industrial-grade PLC + SCADA architecture, it ships preloaded with 23 international test-program sequences (including IEC 60529-2013), supports up to 1,000 programmable steps, and samples data at up to 10 Hz.

  

Principaux avantages

• Large Volume & High Compatibilité Ideal for full-size units, batch samples, or complex multi-condition tests; optional features include internal racks, viewing windows, and utility ports.
• Cost Efficiency Large load capacity spreads energy use over more units, reducing per-test energy costs by over 30 % compared to benchtop chambers.
• Multi-stress Capability Simultaneously applies temperature, humidity, vibration, salt-spray, and other stresses to meet IEC, MIL, and GB standards.
• Ease of Operation & Sécurité Automatic PLC control with touchscreen interface, interlocked doors, and emergency-stop buttons ensure operator safety.
• Flexible Expansion & Customization Modular or integrated design supports on-site installation and add-on modules, letting you tailor functions to evolving test requirements.

Typical Applications

• Essais de véhicules à énergie nouvelle Complies with GB 38031-2020 for battery safety, performing 1,000 high/low-temperature cycles (–40 °C to +60 °C) with temperature transitions in under 5 minutes.
• Aerospace Qualification Per RTCA DO-160G, simulates altitudes up to 30,000 ft and temperature shocks from –65 °C to +150 °C in combined tests.
• Material Aging Research With an optional xenon-lamp accelerated aging module, replicates 10 years of natural outdoor aging within 1,200 hours according to ISO 4892-2.

Selection Guidelines

• Space Utilization: Test articles should occupy no more than 70 % of the usable chamber volume (DHT® offers models from 5 m³ to 50 m³).
• Performance Range: Select a working range at least 20 % beyond your actual needs (e.g., if your product operates between –30 °C and +70 °C, choose a –40 °C to +100 °C model).
• Expansion Modules: DHT® supports integration of 28 optional modules—including salt-spray (ASTM B117) and low-pressure (10 kPa)—to meet specialized testing requirements.

DHT®’s Innovative Solutions

• Maglev Compresseur: Achieves ultra-quiet operation at 38 dB(A) even at –80 °C.
• Nano-hydrophobic Coated Evaporator: Boosts dehumidification efficiency by 50 % and responds to humidity changes in under 30 seconds.
• Digital Twin System: Uses virtual prototyping to reduce commissioning cycles by 60 %.

Conclusion

As reliability requirements rise, choosing an ILAC-MRA-certified DHT® test chamber not only ensures the precision of your test data but also strategically strengthens your product’s competitive edge. Its modular design adapts to evolving R&D needs, maximizing the value of your test equipment throughout its lifecycle.