DRETOP THL-C800-II High-Low Temperature Environmental Test Chamber

Overview

The DRETOP THL-C800-II High-Low Temperature Environmental Test Chamber is an engineered precision system designed for accelerated environmental stress testing under controlled thermal extremes. It operates on a dual-stage refrigeration cycle architecture—utilizing a cascade compressor system where the high-stage evaporator doubles as the low-stage condenser—to achieve stable, reproducible temperature control across a wide operational range of -60 °C to +150 °C. This chamber supports both static temperature conditioning and dynamic thermal cycling protocols, enabling simulation of real-world ambient exposure profiles encountered during transportation, storage, and operational life cycles of industrial components. Its design complies with core requirements of IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), and IEC 60068-2-14 (Change of Temperature), making it suitable for qualification testing in accordance with ISO/IEC 17025-accredited laboratories and engineering validation workflows.

Key Features

• Full-color 7-inch touchscreen controller supporting up to 1000 programmable test profiles, each containing up to 100 individual segments—with ramp, soak, and step functions configurable per segment.
• Multi-level password protection and role-based access control ensure data integrity and prevent unauthorized parameter modification—critical for GLP/GMP-aligned test environments.
• Dual-layer tempered glass observation window with integrated anti-frost heating element and LED interior lighting enables continuous visual monitoring without thermal disturbance or condensation-induced sample contamination.
• Optimized forced-air convection system featuring high-efficiency centrifugal fans and aerodynamically refined air ducts ensures rapid thermal recovery post-door opening and maintains ≤2 °C temperature uniformity throughout the 800 L working volume (1000 × 800 × 1000 mm).
• Independent control loops for heating (nickel-chromium alloy heaters) and cooling (imported hermetic compressors with eco-friendly R404A/R23 refrigerant blend) enable precise P.I.D. auto-tuning and minimize cross-interference during transition phases.
• Robust structural construction includes stainless steel inner chamber, double-wall insulated housing with polyurethane foam (≥100 mm thickness), and silicone rubber door gasket rated for continuous operation from -70 °C to +160 °C without deformation or adhesion loss.
• Comprehensive safety architecture includes over-temperature cut-off, compressor/fan overload protection, leakage current detection, and automatic power cutoff upon alarm activation—fully compliant with IEC 61000-6-2 EMC and IEC 61000-6-4 emission standards.

Sample Compatibility & Compliance

The THL-C800-II accommodates diverse sample geometries via two adjustable stainless steel shelves and a standard Ø50 mm cable/port access hole (with silicone plug). Its interior volume and airflow dynamics support testing of electronic assemblies, automotive ECUs, aerospace fasteners, polymer specimens, PCBs, battery modules, and medical device housings. The chamber meets essential regulatory prerequisites for environmental stress screening (ESS) and HALT/HASS pre-screening per MIL-STD-810H Method 501.7/502.7, and aligns with ASTM D3574, ASTM D638, and ISO 11359-2 for thermomechanical property evaluation. Optional RS485/USB interfaces allow integration into centralized lab management systems for audit-ready traceability under FDA 21 CFR Part 11 and EU Annex 11 requirements.

Software & Data Management

The embedded controller logs real-time temperature data at user-defined intervals (1–600 seconds), stores up to 10,000 hours of historical records internally, and exports time-stamped datasets directly to Excel (.csv) or proprietary .tdf format via USB flash drive. Optional PC software provides remote monitoring, multi-chamber synchronization, statistical process control (SPC) charting, and automated report generation—including test summary, deviation analysis, and pass/fail compliance flags against preset acceptance criteria. All data entries include timestamp, operator ID, and event annotation—supporting full ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).

Applications

• Reliability validation of consumer electronics under thermal shock and prolonged high-temperature aging.
• Material coefficient of thermal expansion (CTE) assessment and dimensional stability testing per ISO 11359.
• Automotive component qualification per AEC-Q200 and OEM-specific thermal endurance specifications.
• Accelerated life testing of lithium-ion battery cells under charge/discharge cycling at sub-zero and elevated temperatures.
• Pre-conditioning of optical sensors and MEMS devices prior to functional performance verification.
• Stability studies of pharmaceutical packaging materials under ICH Q1A(R2) long-term and accelerated storage conditions.

FAQ

What is the standard warranty coverage for the THL-C800-II?
DRETOP provides a 24-month limited warranty covering parts and labor for defects in materials and workmanship, excluding consumables and damage resulting from improper installation or misuse.
Can the chamber be configured for humidity control?
No—the THL-C800-II is a dry-thermal-only chamber. For combined temperature/humidity testing, consider the DRETOP THS series environmental chambers.
Is calibration certification included with shipment?
A factory-as-built temperature mapping report (per ISO/IEC 17025 methodology) is provided; NIST-traceable calibration certificates are available as an optional add-on.
What electrical infrastructure is required for installation?
The THL-C800-II requires a dedicated 380 V AC, 50 Hz, three-phase power supply with minimum 32 A circuit protection and proper grounding per IEC 60364-5-54.
How is software validation supported for regulated industries?
DRETOP supplies a complete IQ/OQ documentation package—including protocol templates, test scripts, and evidence of firmware version control—for seamless integration into computerized system validation (CSV) processes.