TF-360D Walk-in Environmental Test Chamber

Overview

The TF-360D Walk-in Environmental Test Chamber is an industrial-grade, large-volume climate simulation system engineered for rigorous reliability validation under extreme thermal and hygrothermal conditions. Designed in accordance with IEC 60068-3-5 (Environmental testing — Part 3-5: Supporting documentation and guidance — Confirmation of the performance of temperature chambers) and aligned with ASTM E145 and ISO 16750-4 (Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Climatic loads), the chamber enables full-scale functional evaluation of aerospace subassemblies, avionics enclosures, automotive ECUs, server racks, and defense-grade electronic systems. Its core architecture employs a dual-stage cascade refrigeration cycle—integrated with Tecumseh (France) hermetic compressors—to achieve stable operation across the full −70 °C to +100 °C range. Humidity control leverages surface-evaporation humidification coupled with ADP (Adiabatic Dew Point) chilled-coil dehumidification, ensuring precise dynamic regulation between 20 %RH and 98 %RH without condensate carryover or localized saturation.

Key Features

• Spacious internal volume (5 m × 6 m × 2 m) accommodating full-size test articles—including aircraft wing sections, battery energy storage modules, and telecom base station cabinets—without disassembly.
• High-fidelity climate control: ±0.3 °C temperature accuracy and ±2 %RH humidity accuracy maintained under load, verified per ISO/IEC 17025-accredited calibration protocols.
• Robust thermal insulation using 150 mm thick closed-cell polyurethane foam (λ ≤ 0.022 W/m·K), minimizing heat leakage and enabling consistent chamber wall surface temperatures within ±1.5 °C of setpoint.
• Multi-wing centrifugal circulation system with asymmetric duct design ensures uniform air distribution—validated by 9-point sensor mapping per IEC 60068-3-5 Annex B—with vertical/horizontal temperature gradients < ±1.2 °C at steady state.
• Heated multi-layer low-emissivity laminated observation window prevents frosting during low-temperature operation and supports real-time visual monitoring without thermal bridging.
• Comprehensive safety architecture including dual independent over-temperature cutouts, compressor high-pressure switch, phase-sequence monitor, and integrated emergency indoor alarm compliant with EN 61000-6-4 EMC immunity requirements.

Sample Compatibility & Compliance

The TF-360D accommodates heterogeneous test specimens ranging from single PCBs mounted on thermal interface test fixtures to fully assembled military-grade communication shelters. Its open-floor layout, reinforced floor loading capacity (≥ 1,500 kg/m²), and standardized ∅50 mm cable/port penetrations support flexible integration with external power supplies, data acquisition systems, and environmental stress screening (ESS) monitors. The chamber meets structural and operational requirements for MIL-STD-810H Method 502.7 (Low Temperature), Method 507.6 (Humidity), and Method 506.6 (Temperature Shock). All control logic, data logging, and alarm events are traceable and timestamped—supporting GLP/GMP audit readiness and FDA 21 CFR Part 11-compliant electronic records when paired with optional validated software packages.

Software & Data Management

Equipped with a programmable 10.1″ capacitive touchscreen HMI running embedded Linux, the system delivers intuitive multi-segment profile programming (up to 999 steps), real-time graphing of up to eight channels (T₁–T₈, RH₁–RH₄), and automatic deviation reporting. Logged data (CSV/Excel export) includes chamber setpoints, measured values, actuator status (heater %, compressor stages, humidifier duty cycle), and alarm history with UTC timestamps. Optional Ethernet/IP and Modbus TCP interfaces enable integration into centralized MES or SCADA platforms. Firmware complies with IEC 62443-3-3 SL2 cybersecurity requirements for industrial control systems.

Applications

• Aerospace: Thermal vacuum pre-screening of satellite payload bays and flight-critical sensors prior to TPS integration.
• Automotive: Validation of ADAS domain controllers under combined temperature cycling and humidity soak per ISO 16750-4 Clause 6.2.
• Energy Storage: Accelerated aging of lithium-ion battery packs (1–5 MWh scale) under controlled thermal ramping and humidity exposure.
• Defense Electronics: Environmental stress screening (ESS) of radar transceivers per MIL-STD-2164A guidelines.
• Research Infrastructure: Climate-controlled staging for metrology-grade dimensional stability studies of composite airframe components.

FAQ

What is the maximum allowable test article mass and footprint within the chamber?
The internal floor is rated for uniform static loading up to 1,500 kg/m²; total footprint must remain within 5 m × 6 m, with height clearance limited to 2 m below the ceiling plane.
Does the system support automated temperature-humidity profiling with dwell and ramp segments?
Yes—the controller supports up to 999-step profiles with independent ramp rate definition (0.1–10.0 °C/min, 0.1–10.0 %RH/min), dwell time (1 sec–999 h), and loop repetition (1–999 cycles).
Is remote monitoring and control possible via standard industrial protocols?
Standard Ethernet/IP and optional Modbus TCP enable PLC-level integration; secure HTTPS-based web interface is available for browser-based supervision.
How is calibration traceability maintained for long-term compliance?
Factory calibration uses NIST-traceable reference sensors; users receive a certificate of conformance per ISO/IEC 17025, including uncertainty budgets for temperature (k=2, ±0.15 °C) and humidity (k=2, ±1.2 %RH) measurements.
Can the chamber be configured for salt fog or mixed-mode testing (e.g., temp + humidity + vibration)?
The TF-360D platform supports mechanical interface kits for third-party vibration shaker table integration; however, salt fog capability requires separate corrosion chamber configuration—not natively integrated.