DRETOP THS-A150-I High-Low Temperature Environmental Test Chamber

Overview

The DRETOP THS-A150-I 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. Operating on the principle of forced-air convection with independent heating and refrigeration circuits, the chamber delivers reproducible temperature profiles across its 150 L working volume (500 × 500 × 600 mm internal dimensions). It supports steady-state high-temperature hold (up to +120 °C), low-temperature stabilization (down to –20 °C), and programmable thermal cycling — enabling compliance verification per IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), and MIL-STD-810H Method 501.5/502.5. The unit is not rated for explosion-proof operation and is intended for use in standard laboratory or QC environments compliant with ISO/IEC 17025-accredited test facilities.

Key Features

• Industrial-grade 7-inch color touchscreen controller with multilingual interface (English/Chinese), password-protected hierarchical access control (up to 10 user accounts with customizable permission levels)
• Advanced programmable logic: up to 1000 stored test programs, each supporting 100 segments; supports ramp-soak cycles, step transitions, and conditional branching (e.g., jump-to-step, hold-on-alarm, auto-restart after power recovery)
• Dual independent control loops: PID self-tuning algorithm for temperature regulation; real-time adaptive correction based on load dynamics and ambient drift
• Robust thermal architecture: nickel-chromium alloy heating elements; hermetic scroll-type compressor (R404A or R134a refrigerant, depending on configuration); centrifugal forced-air circulation with optimized duct geometry ensuring ≤2 °C spatial uniformity per IEC 60068-3-5
• Enhanced visibility and sample protection: 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
• Structural durability: electrophoretically coated steel outer shell; 304 stainless steel interior with radius-cornered welds and removable adjustable shelves
• Integrated safety systems: dual-stage over-temperature cutoff (mechanical and electronic), compressor/fan overload protection, ground-fault circuit interruption (GFCI), and automatic power-off on alarm activation
• Standard 50 mm diameter test port with EPDM sealing cap; optional RS485 Modbus RTU or USB data logging interface for external SCADA integration

Sample Compatibility & Compliance

The THS-A150-I accommodates a broad range of non-hazardous samples including printed circuit boards (PCBs), automotive ECUs, LED modules, consumer electronics housings, polymer enclosures, and passive electrical components. Its chamber volume and airflow design comply with ASTM E145 Class II requirements for gravity-convection and forced-air ovens. While not certified to ATEX or IECEx standards, the unit meets CE marking requirements under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. It supports GLP/GMP-aligned validation protocols including IQ/OQ/PQ documentation templates upon request. Humidity capability is not included in the THS-A150-I base configuration (model designation “-I” indicates dry-thermal-only operation); humidified variants (e.g., THS-A150-II) are available separately.

Software & Data Management

The embedded controller logs timestamped temperature data at user-defined intervals (1 s to 60 min resolution) and stores up to 180 days of continuous history internally. Export formats include CSV and Excel-compatible .xls files via USB flash drive. Remote monitoring and control are supported through native HTTP/HTTPS web interface compatible with Chrome, Firefox, Safari, and Edge — accessible from desktop, tablet, or smartphone without proprietary plugins. Cloud synchronization (optional DRETOP Cloud Connect service) enables multi-user concurrent access, audit-trail generation per FDA 21 CFR Part 11 Annex 11 requirements, firmware OTA updates, and real-time SMS/email alerting on deviation events. All remote sessions are encrypted using TLS 1.2+ and authenticated via role-based credentials.

Applications

• Electrical & electronic reliability screening: thermal cycling of solder joints per JEDEC JESD22-A104, burn-in validation, and cold-start performance evaluation of automotive infotainment systems
• Materials science: coefficient of thermal expansion (CTE) estimation of composites, aging studies of elastomers and adhesives, and dimensional stability assessment of precision machined parts
• Quality assurance: incoming inspection of supplier components against contractual thermal specifications; outgoing lot release testing per IPC-A-610 or ISO 9001 clause 8.6
• R&D prototyping: iterative thermal boundary condition testing for thermal interface materials (TIMs), battery module thermal management strategies, and optoelectronic packaging robustness
• Standards conformance: verification of product resilience under IEC 60068-2 environmental test procedures, GB/T 2423 series (Chinese national equivalents), and MIL-STD-202G Method 107

FAQ

What is the standard warranty coverage for the THS-A150-I?
DRETOP provides a 24-month limited warranty covering parts and labor for defects in materials and workmanship under normal use. Compressor and controller electronics carry extended 36-month coverage.
Can the chamber be validated for GxP-regulated environments?
Yes — IQ/OQ documentation packages and calibration certificates traceable to NIST or CNAS-accredited laboratories are available as optional add-ons. Full 21 CFR Part 11 compliance requires deployment of DRETOP Cloud Connect with configured electronic signatures and audit trails.
Is external humidity control possible with this model?
No — the THS-A150-I is a dry-thermal-only chamber. For combined temperature/humidity testing, specify the THS-A150-II variant, which integrates steam humidification and condensate removal subsystems.
What power supply configurations are supported?
The THS-A150-I operates on single-phase AC 220 V ±10%, 50 Hz, with maximum current draw of 16 A. Three-phase 380 V input is not supported for this model.
How is temperature uniformity verified during factory acceptance testing?
Each unit undergoes 12-point thermal mapping per IEC 60068-3-5 using calibrated PT100 sensors prior to shipment. A certificate of conformance listing measured deviations at all points is included with delivery documentation.