Tuofeng TF-320B-1000L Programmable Temperature and Humidity Controlled Chamber

Overview

The Tuofeng TF-320B-1000L Programmable Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for precise, repeatable simulation of thermal and hygric stress conditions across industrial R&D, quality assurance, and regulatory compliance workflows. Based on dual-loop PID-controlled refrigeration and steam-humidification architecture, the chamber maintains stable setpoints via independent control of temperature (via cascade refrigeration circuit) and relative humidity (via ultrasonic humidifier and dehumidification bypass). Its operational envelope—spanning −70 °C to +100 °C (with optional +150 °C capability) and 20–98 % RH—supports static conditioning, cyclic testing, and accelerated aging protocols per international environmental test standards. The chamber’s rigid SUS304 stainless steel interior, high-density polyurethane insulation, and redundant safety interlocks ensure long-term stability, low thermal leakage, and operator protection during extended unattended operation.

Key Features

• Programmable multi-segment test profiles with up to 99 cycles and 999 steps per cycle, supporting ramp-hold-soak sequences with variable rate control
• Dual-stage cascade refrigeration system with French Tecumseh compressors and air/water-cooled condensation, enabling rapid cooling from ambient to −70 °C within specified time constraints
• TEMI touchscreen controller (South Korea) with Ethernet interface, real-time data logging, USB export, and password-protected parameter access levels
• High-precision platinum resistance thermometers (PT100) and capacitive RH sensors calibrated traceably to NIST standards
• Redundant safety architecture: over-temperature cutoff, over-humidity shutoff, compressor high/low pressure monitoring, phase failure detection, and fuse-based electrical isolation
• Uniform airflow design with adjustable rear-mounted centrifugal blower and perforated stainless steel shelf supports ensuring ±0.1 °C / ±0.1 % RH spatial uniformity in the 1000 L working volume

Sample Compatibility & Compliance

The TF-320B-1000L accommodates diverse sample geometries—including PCB assemblies, automotive ECUs, medical device housings, polymer films, lithium-ion battery modules, and pharmaceutical packaging—without compromising environmental fidelity. Its internal dimensions (500 × 750 × 600 mm) support standard test fixtures and allow for simultaneous multi-point sensor placement. The chamber meets structural and performance requirements of GB/T 2423.1–2423.4, GB/T 10586, IEC 60068-2-1/-2/-3/-14, and GJB 150.3/4/9. It is routinely validated for GLP-compliant laboratories and supports IQ/OQ/PQ documentation packages. Optional validation kits include calibrated reference probes, uncertainty budgets, and audit-ready calibration certificates aligned with ISO/IEC 17025 practices.

Software & Data Management

The integrated TEMI controller provides native CSV export of time-stamped temperature/humidity logs at user-defined intervals (1s to 60 min resolution). Optional PC-based software enables remote monitoring, alarm email/SMS notification (via SMTP), automated report generation (PDF/Excel), and electronic signature functionality compliant with FDA 21 CFR Part 11 Annex 11 requirements. Audit trails record all parameter changes, user logins, and system events with immutable timestamps. Data integrity is preserved through encrypted local storage and write-protected backup archives.

Applications

• Electronics reliability: thermal cycling of printed circuit boards, solder joint fatigue assessment, and moisture sensitivity level (MSL) testing per J-STD-020
• Automotive component qualification: climate endurance of infotainment systems, ADAS sensors, and EV battery thermal management modules
• Pharmaceutical stability: ICH Q1A(R3)-aligned accelerated stability studies under controlled temperature/humidity conditions
• Polymer & composite aging: hydrolytic degradation kinetics of polyamides, polyesters, and biodegradable films
• Aerospace materials: outgassing behavior and dimensional stability of composites under extreme cold/hot-humid exposure
• Food packaging barrier testing: water vapor transmission rate (WVTR) correlation under defined RH gradients

FAQ

What is the maximum allowable load mass for continuous operation at −70 °C?

The chamber is rated for ≤15 kg of non-volatile, thermally inert mass under sustained −70 °C operation; heavier or thermally active loads require derating verification per thermal load calculation.

Can the TF-320B-1000L be integrated into a central laboratory monitoring network?

Yes—via Modbus TCP or Ethernet/IP protocol support, it interfaces with LIMS, SCADA, and MES platforms using standard OPC UA drivers.

Is third-party calibration certification available with purchase?

Tuofeng offers optional factory calibration with NIST-traceable certificates (ISO/IEC 17025 accredited lab), including as-found/as-left reports and measurement uncertainty statements.

How is humidity controlled below 20 % RH?

The base configuration does not support sub-20 % RH; optional dry-air purge or desiccant-assisted dehumidification modules are available for low-RH applications.

Does the system comply with energy efficiency regulations such as EU Ecodesign Directive?

The dual-stage refrigeration architecture and intelligent defrost logic meet Class A+ energy efficiency benchmarks per EN 60068-3-5, with typical power consumption of 4.2 kW at −40 °C steady state.