DRETOP THL-A225-II High-Low Temperature Environmental Test Chamber

Overview

The DRETOP THL-A225-II High-Low Temperature Environmental Test Chamber is an industrial-grade thermal stress testing system engineered for precision simulation of extreme ambient temperature conditions. Based on forced-air convection and dual-stage compressor refrigeration architecture, it delivers stable, repeatable thermal profiles across a wide operational range—from −20 °C to +150 °C—enabling rigorous evaluation of material behavior, component reliability, and product integrity under accelerated aging, storage, and operational environmental stresses. Designed in accordance with international test standards—including IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), and MIL-STD-810G Method 501.6—the chamber supports both steady-state and programmable thermal cycling protocols essential for qualification testing in electronics, automotive, aerospace, and medical device manufacturing.

Key Features

• Full-color 7-inch capacitive touchscreen HMI with multi-language interface (English/Chinese), password-protected hierarchical user access (up to 10 accounts with customizable permission levels)
• Advanced programmable controller supporting up to 1000 stored test programs, each containing up to 100 individual segments with independent ramp/soak parameters
• Independent control loops for heating (nickel-chromium alloy heaters), cooling (imported hermetic compressor), and air circulation (high-efficiency centrifugal blower), minimizing cross-interference and improving thermal response fidelity
• Optimized double-layer insulated air duct design with adjustable airflow distribution ensures uniform temperature distribution (≤2 °C deviation) and rapid stabilization (<5 min recovery after door opening)
• Double-glazed, heated observation window with anti-frost coating prevents condensation and enables unobstructed visual monitoring without compromising thermal integrity
• Stainless steel interior (SUS304, radius-rounded corners), electrostatically coated outer shell, and silicone rubber door gasket maintain structural durability and long-term sealing performance across the full temperature range
• Integrated safety suite including over-temperature cut-off, compressor/fan overload protection, ground-fault circuit interruption (GFCI), and automatic power restoration after grid failure
• Standard 50 mm diameter test port with brass flange for signal/power/gas feedthrough; optional RS485 or USB interface for external data acquisition and remote command execution

Sample Compatibility & Compliance

The THL-A225-II accommodates samples up to 225 L internal volume (600 × 500 × 750 mm working chamber), with two removable stainless steel shelves and unrestricted vertical clearance. Its non-explosion-proof configuration meets general-purpose laboratory and production floor requirements per UL 61010-1 and CE EN 61000-6-3 EMC directives. While not certified for hazardous area use, the chamber complies with key environmental test standard methodologies referenced in ISO 16750-4 (road vehicles), AEC-Q200 (passive components), and JEDEC JESD22-A104 (temperature cycling). Humidity capability is not included in this model (THL-series), distinguishing it from the THS-series humidified variants.

Software & Data Management

Embedded firmware supports real-time data logging at configurable intervals (1 s to 60 min), with timestamped records stored internally (≥30 days at 1-min resolution) and exportable via USB to CSV or Excel-compatible formats. Optional cloud connectivity enables secure remote monitoring and control through HTML5-compliant browsers or native iOS/Android applications—fully synchronized with the local HMI interface. Audit trails include operator ID, parameter changes, alarm events, and power status transitions, satisfying GLP/GMP documentation requirements under FDA 21 CFR Part 11 when paired with validated electronic signature workflows. Firmware updates are delivered over-the-air or via USB, ensuring long-term compliance with evolving cybersecurity and functional safety expectations.

Applications

This chamber serves critical roles in quality assurance and R&D validation workflows: thermal shock pre-screening of PCB assemblies prior to HALT; shelf-life prediction of polymer-based medical disposables under accelerated temperature aging; qualification of automotive ECUs against ISO 16750-4 thermal endurance criteria; stability assessment of lithium-ion battery modules under high-temperature storage conditions; and verification of optical sensor drift characteristics across operating temperature bands. Its programmable ramp/soak logic and repeatability (±0.5 °C fluctuation) make it suitable for ASTM D3418 and ISO 11357-1 thermal transition analysis when used with calibrated reference probes.

FAQ

What is the maximum sample weight the THL-A225-II can accommodate?
The chamber does not specify a maximum load mass, but thermal capacity must remain within the rated heating/cooling rates; users should ensure total thermal mass does not exceed 15 kg for optimal profile fidelity.
Is humidity control available on this model?
No—this is a dry-temperature-only variant. For combined temperature/humidity testing, refer to the THS-A225-II series.
Can the chamber be integrated into a factory MES or SCADA system?
Yes—via optional RS485 Modbus RTU or Ethernet/IP communication modules (not included by default), enabling bi-directional parameter setting and real-time telemetry ingestion.
Does the unit comply with energy efficiency regulations such as EU ErP Directive?
Equipped with inverter-driven compressor and intelligent duty-cycle management, it meets Class A+ energy labeling requirements per EU Regulation No. 626/2011.
What calibration documentation is provided at shipment?
Each unit ships with a factory-as-built temperature uniformity report (per IEC 60068-3-5) and NIST-traceable sensor calibration certificate for the primary chamber sensor. On-site IQ/OQ validation support is available upon request.