Tuofeng TF-320A-800L Environmental Test Chamber – Programmable Temperature & Humidity Cycling Chamber

Overview

The Tuofeng TF-320A-800L Environmental Test Chamber is a precision-engineered programmable temperature and humidity cycling system designed for rigorous reliability validation of materials and finished products under controlled climatic stress conditions. Operating on the principle of forced-air convection combined with dual-stage refrigeration and PID-controlled steam humidification, this chamber delivers high reproducibility in simulating real-world environmental exposure scenarios—including thermal shock, steady-state high/low temperature, constant humidity, and dynamic temperature-humidity profiles. Its 800 L internal volume (800 × 1000 × 1000 mm) accommodates medium-to-large industrial components such as automotive ECUs, aerospace avionics modules, medical device enclosures, and multi-layer PCB assemblies—enabling full-system-level qualification per international environmental test standards.

Key Features

• High-stability dual-stage compressor refrigeration system (air/water-cooled), enabling rapid cooling from +150 °C to -70 °C in ≤45 minutes under no-load conditions and maintaining thermal stability at extreme endpoints.
• Precision PID-based TEMI controller (South Korea) with intuitive touchscreen interface, 100-segment programmable profile capability, and real-time data logging (optional USB/RS485/Ethernet output).
• SUS304 stainless steel construction throughout interior and exterior chambers, coupled with high-density polyurethane insulation (chlorinated ethyl acetate base), minimizing thermal bridging and ensuring long-term corrosion resistance.
• Independent humidity generation via electric steam generator and condensation-based dehumidification, achieving stable 20–98 %RH control with ±2.0 %RH accuracy across the full temperature range.
• Comprehensive safety architecture: over-temperature/over-humidity cut-off, refrigerant high/low pressure monitoring, compressor overload protection, fuse-integrated main power supply, and audible/visual fault alert system.
• Designed for continuous operation in ambient environments between 5–30 °C and ≤85 %RH, compatible with both single-phase (220 VAC ±10%, 50/60 Hz) and three-phase (380 VAC ±10%, 50/60 Hz) input configurations.

Sample Compatibility & Compliance

The TF-320A-800L supports non-destructive environmental stress screening of diverse sample types—including rigid plastics, metal alloys, elastomeric seals, lithium-ion battery packs, optical sensors, and sterilized medical packaging. Its uniformity performance (±0.1 °C temperature, ±3.0 %RH humidity) meets the spatial homogeneity requirements specified in ISO 16750-4, MIL-STD-810H Method 502.7, and IEC 60068-3-5. The chamber is validated to comply with multiple national and military standards including GB/T 2423.1–2423.4 (cold, dry heat, damp heat, cyclic damp heat), GB/T 10586 (humidity chamber specifications), GJB 150.3/4/9 (military environmental testing), and IEC 60068-2-1/2 (low/high temperature test methods). Calibration traceability follows ISO/IEC 17025 guidelines when performed by accredited third-party laboratories.

Software & Data Management

The integrated TEMI controller provides built-in data recording at user-defined intervals (1–600 seconds), storing up to 10,000 data points internally. Optional PC software enables remote monitoring, profile editing, real-time graphing, and automated report generation in PDF/CSV format. Audit trail functionality—including operator ID, parameter changes, alarm events, and runtime logs—supports GLP/GMP-aligned quality systems. For regulated industries, optional 21 CFR Part 11-compliant firmware upgrades are available, delivering electronic signature support, role-based access control, and immutable data archiving.

Applications

• Accelerated aging studies of polymer-based enclosures and conformal coatings under combined thermal-hygric stress.
• Qualification testing of automotive infotainment units per ISO 16750-4 (temperature cycling + humidity).
• Pre-conditioning of pharmaceutical primary packaging prior to stability chamber storage (ICH Q1A–Q5E).
• Validation of moisture barrier integrity in flexible medical pouches using cyclic humidity ramping.
• Thermal endurance evaluation of power electronics modules operating at junction temperatures exceeding 125 °C.
• Environmental screening of defense-grade connectors and RF shielding gaskets per MIL-DTL-38999 and MIL-STD-202.

FAQ

What is the standard warranty period for the TF-320A-800L chamber?

Tuofeng provides a 12-month parts-and-labor warranty from the date of commissioning, extendable to 24 months with annual preventive maintenance contracts.

Can the chamber be configured for nitrogen purge or low-oxygen operation?

Yes—custom inert gas inlet ports and O₂ monitoring integration are available as factory-installed options upon request.

Is external calibration documentation included with delivery?

A factory calibration certificate (traceable to NIM, China) is supplied; ISO/IEC 17025-certified field calibration services can be arranged separately.

Does the system support Ethernet-based remote access for lab-wide network integration?

Standard RS485 Modbus RTU is included; optional Ethernet/IP or OPC UA gateways enable seamless SCADA and MES integration.

How is temperature uniformity verified during installation qualification (IQ)?

A 9-point sensor mapping protocol (per IEC 60068-3-5 Annex B) is performed using NIST-traceable Class A PT100 probes, with results documented in the IQ/OQ report package.