Tuofeng TF-360C Walk-in Environmental Test Chamber

Overview

The Tuofeng TF-360C Walk-in Environmental Test Chamber is an industrial-grade, large-volume climate simulation system engineered for rigorous long-duration environmental stress testing of aerospace components, electronic assemblies, automotive modules, and advanced materials. Designed in accordance with fundamental thermodynamic and psychrometric principles, the chamber employs a dual-loop control architecture—separate PID-regulated circuits for temperature and humidity—to maintain stable, repeatable test conditions across its full operational envelope. Its structural integrity, thermal inertia management, and precision air distribution system ensure minimal spatial gradients and high reproducibility—critical for compliance-driven validation protocols under ISO 16750-4, MIL-STD-810H, IEC 60068-2-1, IEC 60068-2-2, and IEC 60068-2-30. The chamber’s scalable internal volume (standard configuration: 3 m × 5 m × 2 m = 30 m³) accommodates full-size test articles—including avionics racks, battery packs, and vehicle ECUs—without compromising uniformity or control fidelity.

Key Features

• Robust structural architecture: Exterior cold-rolled steel frame with electrostatic powder coating; interior chamber walls, floor, and ceiling fabricated from seamless SUS#304 stainless steel for corrosion resistance and cleanroom-compatible maintenance.
• High-efficiency thermal management: Dual-stage refrigeration circuit utilizing Tecumseh (France) hermetic scroll compressors, coupled with adiabatic dew point (ADP) chilled-water dehumidification for precise RH control down to −70 °C without ice accumulation on evaporators.
• Precision climate control: Independent high-resolution PID controllers for temperature and humidity, each with auto-tuning capability and real-time deviation compensation; control accuracy maintained at ±0.3 °C and ±2 %RH over time.
• Uniform airflow design: Multi-wing centrifugal circulation system integrated with laminar-flow optimized ductwork ensures ≤±2.0 °C temperature and ≤±5 %RH humidity uniformity throughout the working volume per IEC 60068-3-5.
• Operational safety & traceability: Comprehensive hardware-level protections including compressor high-pressure cut-off, phase sequence monitoring, ground-fault interruption, and redundant water-level sensors; all alarms logged with timestamps in non-volatile memory.

Sample Compatibility & Compliance

The TF-360C supports static and dynamic testing of large-format specimens—including flight-critical avionics, EV traction battery enclosures, military-grade communication systems, and polymer composite panels—under simultaneous temperature-humidity stress profiles. Its open-floor layout and reinforced floor loading capacity (≥500 kg/m²) enable integration with external power supplies, data acquisition rigs, and real-time monitoring interfaces. The chamber complies with key international standards for environmental testing infrastructure, including ISO/IEC 17025 calibration traceability requirements for chamber validation, ASTM E145 Class A performance criteria for uniformity, and GLP-aligned audit trails for qualification runs. Optional IQ/OQ documentation packages are available to support FDA 21 CFR Part 11–compliant validation in regulated manufacturing environments.

Software & Data Management

The integrated controller features a 10.4″ TFT touchscreen HMI with embedded Ethernet (TCP/IP), RS-485, and USB 2.0 connectivity. Standard firmware supports up to 100 programmable test profiles with nested steps, ramp/soak logic, and conditional branching. All operational parameters—including setpoints, actual values, alarm events, and actuator status—are timestamped and stored locally (≥1 year retention). Optional PC-based software enables remote supervision, automated report generation (PDF/CSV), trend analysis, and export of raw data compliant with ASTM E2075 and ISO 14644-3 archival requirements. Audit trail functionality records user logins, parameter modifications, and manual overrides—meeting ALCOA+ data integrity principles for GxP applications.

Applications

• Aerospace: Thermal vacuum pre-screening, condensation resistance verification per DO-160G Section 4.5, and combined temperature-humidity life-cycle stress testing of inertial navigation units.
• Automotive Electronics: Validation of ADAS control modules against ISO 16750-4 thermal shock and humidity soak requirements; battery thermal runaway propagation studies.
• Medical Device Manufacturing: Accelerated aging of sterile packaging per ISO 11607-1, and environmental qualification of diagnostic imaging subsystems.
• Materials Science: Hygrothermal aging of fiber-reinforced polymers, adhesive bond durability assessment, and dimensional stability evaluation of precision optics mounts.
• Energy Storage: Cycle-life testing of lithium-ion battery packs under variable ambient humidity and sub-zero start-up conditions.

FAQ

What is the standard validation protocol for this chamber?

Factory-installed validation includes as-built drawings, sensor calibration certificates (NIST-traceable), and a full uniformity mapping report per IEC 60068-3-5 using ≥16 calibrated PT100 probes.

Can the chamber be configured for rapid thermal cycling?

Yes—optional high-capacity heating/cooling modules increase ramp rates to 5 °C/min (−40 °C to +85 °C in ≤18 min), subject to load mass and thermal mass constraints.

Is remote monitoring supported via industry-standard protocols?

The controller supports Modbus TCP and OPC UA (via optional gateway), enabling integration into plant-wide SCADA or MES platforms for centralized environmental data aggregation.

How is humidity controlled at sub-zero temperatures?

Below 0 °C, humidity is managed indirectly via dew point control using the ADP chilled-water system; RH values are calculated and displayed based on measured dry-bulb temperature and chilled-water saturation pressure.

Does the system meet electromagnetic compatibility (EMC) requirements for lab environments?

Yes—the entire electrical cabinet is shielded per EN 61000-6-3 (emission) and EN 61000-6-2 (immunity), with conducted/radiated emissions tested and certified by third-party accredited laboratories.