DRETOP THL-A100-I High-Low Temperature Environmental Test Chamber
| Brand | DRETOP |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | THL-A100-I |
| Temperature Range | -20 °C to +120 °C |
| Refrigeration Method | Hermetic Compressor Cooling |
| Explosion-Proof | Standard (Non-Explosion-Proof) |
| Temperature Fluctuation | ±0.5 °C |
| Temperature Uniformity | ≤2 °C |
| Heating Rate | 1–3 °C/min (adjustable) |
| Cooling Rate | 0.7–1 °C/min (adjustable) |
| Interior Dimensions (W×D×H) | 500 mm × 400 mm × 500 mm |
| Interior Volume | 100 L |
| Control Interface | Color Touchscreen (English/Chinese Switchable) |
| Programmability | 1000 Programs × 100 Segments |
| Safety Protections | Over-Temperature, Over-Current, Compressor/Fan Overload, Leakage Current |
| Optional Interfaces | RS485, USB |
Overview
The DRETOP THL-A100-I High-Low Temperature Environmental Test Chamber is an engineered thermal stress testing system designed for precise simulation of extreme ambient temperature conditions in laboratory and industrial quality assurance environments. Based on forced-air convection thermodynamics and dual-stage refrigeration architecture, the chamber delivers controlled, repeatable thermal cycling across a validated operating range of –20 °C to +120 °C. Its design conforms to core requirements of international environmental testing standards—including IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), and MIL-STD-810G Method 501.5—enabling reliable evaluation of material stability, component functionality, and product durability under accelerated thermal stress. The chamber is widely deployed in R&D validation, pre-production qualification, and post-manufacturing reliability screening for electronics, automotive ECUs, aerospace subsystems, polymer composites, and metallic assemblies.
Key Features
- Intelligent color touchscreen controller with bilingual (English/Chinese) interface, password-protected hierarchical access levels, and audit-trail-capable operation logging for GLP/GMP-aligned workflows.
- Advanced programmable logic: supports up to 1000 multi-step test profiles, each containing up to 100 individual segments with independent ramp/soak settings, slope control, and conditional branching (e.g., jump-to-step, hold-on-alarm, end-on-completion).
- Optimized air circulation system featuring high-efficiency centrifugal blower, nickel-chromium alloy heating elements, and a dual-function evaporator-condenser heat exchanger—ensuring uniform temperature distribution (≤2 °C deviation) and rapid thermal response (heating: 1–3 °C/min; cooling: 0.7–1 °C/min).
- Robust mechanical construction: double-layer tempered glass observation window with integrated anti-frost heating film and LED illumination; silicone rubber door gasket maintaining integrity from –20 °C to +120 °C; reinforced stainless steel inner chamber (SUS304); and heavy-duty casters with locking mechanism for stable positioning.
- Comprehensive safety architecture: independent over-temperature cut-off, compressor/fan overload protection, earth leakage detection, and automatic power recovery after mains interruption—all compliant with IEC 61000-4 electromagnetic compatibility directives.
- Energy-efficient refrigeration: hermetically sealed, fluorocarbon-free (R404A/R507 compatible) compressor unit with intelligent start-stop cycling and real-time power consumption monitoring.
Sample Compatibility & Compliance
The THL-A100-I accommodates samples up to 100 L internal volume (500 mm × 400 mm × 500 mm working space) with two adjustable stainless steel shelves. Standard 50 mm-diameter cable/port access is provided for powered or instrumented testing (e.g., live signal monitoring during thermal cycling). The chamber meets structural and operational requirements referenced in ASTM D3418 (thermal transitions of polymers), ISO 16750-4 (road vehicles—electrical loads), and GB/T 2423.1–2022 / GB/T 2423.2–2022 (Chinese national standards equivalent to IEC 60068-2-1/-2). Optional RS485 or USB connectivity enables remote supervision and data export in CSV/Excel format, supporting traceability for FDA 21 CFR Part 11–compliant validation protocols when paired with qualified software.
Software & Data Management
The embedded controller logs real-time temperature data at user-defined intervals (1–600 seconds), stores up to 30 days of historical records onboard, and exports timestamped datasets via USB flash drive. Optional PC-based software (sold separately) provides graphical trend analysis, statistical process control (SPC) overlays, alarm event correlation, and PDF report generation with digital signature support. All logged parameters—including chamber setpoint, actual temperature, program step status, and fault codes—are time-stamped with millisecond resolution and retain metadata such as operator ID and calibration verification date—essential for ISO/IEC 17025 accredited laboratories.
Applications
- Accelerated life testing of printed circuit boards (PCBs), connectors, and semiconductor packages under thermal shock and cyclic stress.
- Validation of thermal expansion coefficients and dimensional stability in plastic housings, elastomeric seals, and composite laminates.
- Environmental stress screening (ESS) of avionics modules per DO-160 Section 4.2 (Temperature Variation).
- Material property assessment including glass transition (Tg), embrittlement point, and oxidation onset in polymer formulations.
- Pre-compliance thermal testing for consumer electronics prior to formal IEC 60950-1 or IEC 62368-1 certification.
- Research-grade thermal aging studies in university materials science and mechanical engineering labs.
FAQ
What is the maximum sample weight the THL-A100-I can accommodate without compromising temperature uniformity?
The chamber is rated for static load up to 30 kg distributed evenly across both shelves. Exceeding this may impede airflow and degrade uniformity beyond the specified ≤2 °C tolerance.
Does the unit comply with UL or CE safety certification requirements?
The THL-A100-I is constructed to meet IEC 61010-1:2010 safety principles for laboratory equipment. CE marking is available upon request with EU Representative documentation; UL listing requires additional third-party evaluation and is not standard.
Can the chamber perform rapid thermal cycling between –20 °C and +120 °C?
While the unit achieves ramp rates of 1–3 °C/min (heating) and 0.7–1 °C/min (cooling), full-range cycling requires careful program sequencing due to inherent thermal mass limitations. For true rapid thermal cycling (<5 min cycle time), a dedicated thermal shock chamber is recommended.
Is remote monitoring and control supported out-of-the-box?
Standard configuration includes local touchscreen control only. Remote supervision requires optional RS485 or USB interface plus host PC software—no built-in Ethernet/WiFi module is included.
What maintenance intervals are recommended for long-term reliability?
Compressor oil and refrigerant levels should be verified annually; air intake filters cleaned quarterly; door gasket inspected semiannually for compression set; and temperature sensor calibration certified per ISO/IEC 17025 every 12 months by an accredited lab.
