DRETOP THS-A400-II High-Low Temperature Environmental Test Chamber
| Brand | DRETOP |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | THS-A400-II |
| Temperature Range | -20 °C to +150 °C |
| Refrigeration Method | Compressor-based Cooling |
| Explosion-Proof Design | Standard (Non-Explosion-Proof) |
| Temperature Fluctuation | ±0.5 °C |
| Temperature Uniformity | ≤2 °C |
| Heating Rate | Adjustable, 1–3 °C/min (average) |
| Cooling Rate | Adjustable, 0.7–1 °C/min (average) |
| Internal Chamber Dimensions | 800 × 600 × 850 mm (W×D×H) |
Overview
The DRETOP THS-A400-II High-Low Temperature Environmental Test Chamber is an engineered precision system designed for accelerated environmental stress testing of industrial components and finished products under controlled thermal conditions. Based on forced-air convection and dual-stage compressor refrigeration architecture, the chamber delivers stable, repeatable temperature profiles across a wide operational range—from −20 °C to +150 °C—enabling simulation of real-world thermal extremes encountered during product lifecycle validation. Unlike basic thermal ovens or static incubators, this chamber implements dynamic thermal cycling protocols compliant with international test standards including IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), and MIL-STD-810G Method 502.5. Its structural design prioritizes thermal integrity, mechanical robustness, and long-term calibration stability—critical for laboratories operating under GLP, ISO/IEC 17025, or automotive IATF 16949 quality frameworks.
Key Features
- 7-inch full-color capacitive touchscreen HMI with bilingual (English/Chinese) interface, configurable user access levels, and password-protected parameter editing to prevent unauthorized modifications.
- Programmable controller supporting up to 1000 stored test programs, each containing up to 100 segments; enables complex ramp-hold-soak cycles, slope-controlled transitions, and conditional branching (e.g., jump-to-step, loop, hold-on-alarm).
- Independent PID-controlled heating, cooling, and air circulation subsystems—minimizing cross-interference and improving thermal response fidelity and energy efficiency.
- Double-layer tempered glass observation window with integrated anti-frost heating element and LED interior lighting—ensuring unobstructed visual monitoring without condensation-induced optical distortion or sample contamination.
- Nichrome alloy heating elements combined with high-efficiency centrifugal blower assembly (rated for continuous duty) guarantee rapid thermal equilibration and uniform airflow distribution per ASTM E145 Annex A3 requirements.
- High-seal silicone door gasket maintains chamber integrity across extreme thermal gradients; electrostatically coated steel exterior and electropolished stainless-steel inner chamber resist corrosion and facilitate cleaning and residue-free maintenance.
- Intelligent safety architecture includes over-temperature cut-off, compressor/fan overload protection, ground-fault interruption, and automatic power recovery after grid interruption—fully compliant with IEC 61000-4 electromagnetic compatibility directives.
Sample Compatibility & Compliance
The THS-A400-II accommodates diverse sample geometries via two adjustable stainless-steel shelves (load capacity: ≤15 kg per shelf) and a standard 50 mm diameter cable/port access opening (IP54-rated). Its internal volume of 400 L supports testing of automotive ECUs, PCB assemblies, LED modules, battery packs, medical device enclosures, and aerospace subassemblies. The chamber meets essential regulatory prerequisites for pre-compliance screening in accordance with UL 746C, IPC-J-STD-020D (moisture sensitivity level conditioning), and JEDEC JESD22-A104E (temperature cycling). While not intrinsically explosion-proof, its non-sparking fan motors and grounded chassis satisfy Class I, Division 2 electrical safety guidelines when deployed in non-hazardous environments.
Software & Data Management
Equipped with embedded Ethernet and optional RS485/USB interfaces, the THS-A400-II integrates natively into enterprise lab networks. Its onboard data logger records timestamped temperature values at user-defined intervals (1 s to 60 min resolution), stores ≥30 days of historical data locally, and exports structured CSV or Excel-compatible reports. Remote supervision is enabled via web browser (HTML5-compliant), iOS/Android mobile applications, or third-party SCADA platforms using Modbus TCP or HTTP RESTful APIs. Audit trails—including operator login/logout events, setpoint changes, alarm triggers, and program execution logs—are retained with immutable timestamps to satisfy FDA 21 CFR Part 11 electronic record requirements. Firmware updates may be performed over-the-air or via USB drive without interrupting active test sequences.
Applications
This chamber serves as a core tool in reliability engineering labs conducting thermal aging, solder joint fatigue analysis, material coefficient-of-expansion (CTE) evaluation, and accelerated life testing. It is routinely deployed for qualification of consumer electronics per JEDEC JESD22-A108F (high-temperature operating life), automotive components per AEC-Q200 stress testing protocols, and photovoltaic module certification per IEC 61215 thermal cycling sequences. Additional use cases include pre-conditioning of adhesives prior to peel strength measurement, validation of thermal interface materials (TIMs), and stability assessment of pharmaceutical packaging under climatic stress per ICH Q1A(R2).
FAQ
What is the maximum allowable sample mass inside the THS-A400-II chamber?
The total load should not exceed 30 kg, distributed evenly across two shelves (≤15 kg per shelf) to maintain airflow symmetry and thermal uniformity.
Does the chamber support humidity control?
The THS-A400-II model is configured for dry thermal testing only; humidity capability requires the THS-A400-II-H variant (optional humidification system, 20–95% RH range).
Can test data be exported in machine-readable format for statistical process control (SPC)?
Yes—CSV exports include column headers, absolute timestamps (ISO 8601), and raw sensor readings; compatible with Minitab, JMP, and Python pandas workflows.
Is remote firmware update supported without physical access?
Yes—via secure HTTPS upload through the embedded web server; update packages are digitally signed and validated before installation.
What calibration documentation is provided with shipment?
Each unit ships with a factory-as-built calibration certificate traceable to NIM (National Institute of Metrology, China), covering temperature uniformity and fluctuation verification at three reference points (−20 °C, 25 °C, +150 °C).
