Tuofeng TF-320B-408L Programmable Temperature and Humidity Controlled Chamber
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic (China-made) |
| Model | TF-320B-408L |
| Instrument Type | Upright Chamber |
| Temperature Range | −70 °C to +100 °C (optional up to +150 °C) |
| Humidity Range | 20–98 % RH |
| Temperature Uniformity | ±0.1 °C (at steady state) |
| Temperature Fluctuation | ±1 °C (high/low temp zones) |
| Humidity Uniformity | ±0.1 % RH |
| Humidity Fluctuation | ±0.1 % RH |
| Heating Rate | 1.0–3.0 °C/min (average ~4 °C/min) |
| Internal Dimensions (W×H×D) | 600 × 850 × 800 mm |
| External Dimensions (W×H×D) | 1100 × 1710 × 1370 mm |
| Controller | TEMI (South Korea) |
| Compressor | Tecumseh (France) |
| Cooling System | Air/Water-Cooled Single or Dual-Stage Compression |
| Insulation | High-Density Polyurethane Foam with Chlorinated Ethyl Carbamate Base |
| Interior Material | SUS304 Stainless Steel |
| Power Supply | 1φ220 VAC ±10%, 50/60 Hz or 3φ380 VAC ±10%, 50/60 Hz (configurable) |
| Operating Ambient | 5–30 °C, ≤85 % RH |
Overview
The Tuofeng TF-320B-408L Programmable Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for precise, repeatable simulation of climatic stress conditions across industrial R&D, quality assurance, and regulatory compliance workflows. It operates on the principle of closed-loop PID-controlled refrigeration and steam-based humidification, enabling dynamic cycling between extreme thermal and hygroscopic states. The chamber supports both static conditioning and programmable multi-step profiles—including ramp-soak-hold sequences and cyclic humidity-temperature transitions—making it suitable for accelerated aging, reliability screening, and failure mode analysis per internationally recognized environmental stress testing standards. Its robust architecture integrates dual-stage compression cooling, high-efficiency stainless-steel evaporators, and a microprocessor-driven TEMI controller with real-time data logging capability.
Key Features
- Programmable multi-segment test profiles with up to 99 cycles and 999 steps per cycle, supporting complex thermal-hygrometric sequences such as rapid temperature ramping followed by stabilized humidity hold phases.
- High-precision climate control: ±0.1 °C temperature uniformity and ±0.1 % RH humidity uniformity within the working volume, validated under ISO 17025-accredited calibration protocols.
- Dual-stage refrigeration system using Tecumseh compressors, optimized for stable operation at ultra-low temperatures down to −70 °C while maintaining low noise and extended service intervals.
- SUS304 stainless-steel interior chamber and door seal construction ensure corrosion resistance, ease of cleaning, and long-term dimensional stability under repeated condensation and thermal cycling.
- Integrated safety architecture includes over-temperature/over-humidity cut-off, refrigerant high/low pressure monitoring, compressor overload protection, and non-fuse circuit breakers compliant with IEC 61000-4 electromagnetic compatibility requirements.
- Intuitive TEMI touchscreen controller with USB data export, password-protected parameter settings, and built-in alarm history with timestamped event logging.
Sample Compatibility & Compliance
The TF-320B-408L accommodates a broad range of sample types—including PCB assemblies, polymer enclosures, medical device packaging, lithium-ion battery modules, optical sensors, and pharmaceutical primary containers—without compromising chamber integrity or measurement fidelity. Its internal volume (408 L) allows for full-size automotive ECUs, stacked consumer electronics units, or multi-tier environmental exposure racks. The system complies with key international test standards including GB/T 2423.1–2423.4 (IEC 60068-2 equivalents), GB/T 10586 (wet heat testing), GJB 150.3/150.4/150.9 (military environmental testing), and ASTM D4332 (conditioning of plastics). Optional validation packages support IQ/OQ documentation aligned with GLP and GMP environments, including traceable sensor calibration certificates and uncertainty budgets per ISO/IEC 17025.
Software & Data Management
The TEMI controller provides native Ethernet and RS-485 interfaces for integration into centralized lab management systems. Optional PC-based software enables remote monitoring, automated report generation (PDF/CSV), and audit-trail-enabled user access control meeting FDA 21 CFR Part 11 requirements. All logged data—including chamber setpoints, actual chamber readings, alarm events, and profile execution status—are time-stamped with millisecond resolution and stored internally for ≥30 days. Exported datasets include metadata such as operator ID, test ID, calibration certificate numbers, and environmental ambient conditions during test execution—ensuring full traceability for internal audits or regulatory submissions.
Applications
- Electronics reliability assessment: Thermal shock screening of solder joints, conformal coating adhesion testing, and moisture sensitivity level (MSL) evaluation per JEDEC J-STD-020.
- Automotive component validation: Climate cycling of infotainment displays, connector housings, and ADAS camera modules per ISO 16750-4 and GMW15072.
- Pharmaceutical packaging integrity: Accelerated stability studies of blister packs and vial stoppers under controlled humidity gradients per ICH Q1A(R2).
- Aerospace materials qualification: Composite resin curing behavior, adhesive bond strength retention, and sealant performance under combined thermal-hygrometric stress per SAE AMS 2750E Annex C.
- Research-grade material science: Polymer crystallinity evolution, hygroscopic swelling kinetics in biodegradable films, and phase transition mapping in shape-memory alloys.
FAQ
What is the maximum allowable ambient temperature for continuous operation?
The chamber requires an ambient operating environment between 5 °C and 30 °C, with relative humidity not exceeding 85 % RH non-condensing. Operation outside this range may compromise refrigeration efficiency and long-term compressor life.
Can the TF-320B-408L perform rapid temperature transitions?
Yes—the system achieves average heating rates of 4 °C/min and cooling rates of 1 °C/min across its full temperature range. Actual ramp performance depends on load mass, thermal inertia, and selected humidity setpoint.
Is third-party calibration and validation support available?
Tuofeng offers optional IQ/OQ documentation packages and on-site calibration services performed by CNAS-accredited partners, including uncertainty analysis per ISO/IEC 17025 and traceability to NIM (National Institute of Metrology, China).
Does the controller support multi-user access with role-based permissions?
Yes—the TEMI controller supports up to 10 user accounts with configurable privilege levels (e.g., operator, engineer, administrator), including password complexity enforcement and session timeout settings.
What refrigerant is used in the dual-stage cooling system?
The system employs environmentally compliant R404A or R507A refrigerants, selected based on regional regulations and operational temperature requirements; refrigerant charge volumes and recovery procedures comply with ISO 5149 and EPA Section 608 guidelines.
