DRETOP THL-C150-I High-Low Temperature Environmental Test Chamber
| Brand | DRETOP |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | THL-C150-I |
| Temperature Range | -60 °C to +120 °C |
| Refrigeration Method | Hermetic Compressor-Based 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 × 500 mm × 600 mm |
| Control Interface | Color Touchscreen with Multi-Program Capability |
| Power Supply | AC 220 V / 50 Hz or AC 380 V / 50 Hz |
| Input Power | 6000 W / 7000 W (Dual Voltage Configurable) |
| Safety Protections | Over-Temperature, Over-Current, Compressor/Fan Overload, Leakage Current, Auto-Power-Off on Alarm |
Overview
The DRETOP THL-C150-I High-Low Temperature Environmental Test Chamber is an engineered solution for accelerated environmental stress testing under controlled thermal extremes. Designed in accordance with IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), and ISO 16750-4 (Road Vehicles — Environmental Conditions), it enables precise simulation of temperature cycling profiles encountered during product development, qualification, and reliability validation. The chamber operates on a dual-stage refrigeration architecture—where the evaporator of the high-temperature stage serves as the condenser for the low-temperature stage—enabling stable operation across its full range of −60 °C to +120 °C. Its robust thermal insulation, optimized air circulation system, and PID auto-tuning controller ensure high reproducibility and minimal thermal lag during ramp transitions. This unit is not intended for hazardous area use and complies with standard industrial safety requirements for non-explosive environments.
Key Features
- Full-color 7-inch capacitive touchscreen interface supporting up to 1000 programmable test sequences, each with 100 configurable segments—including ramp, soak, and step functions.
- Multi-language UI (English/Chinese) with hierarchical password protection (operator, engineer, administrator levels) to prevent unauthorized parameter modification and ensure data integrity.
- Double-layer tempered glass observation window with integrated anti-frost heating and LED interior lighting for real-time visual monitoring without thermal disturbance.
- High-efficiency nickel-chromium alloy heating elements and centrifugal forced-air circulation system delivering uniform airflow distribution and ≤2 °C spatial temperature uniformity per IEC 60068-3-5.
- Dual independent control loops for heating and cooling subsystems—minimizing cross-interference and enabling faster stabilization after door opening or load changes.
- Compressor-based refrigeration using environmentally compliant R404A/R23 cascade refrigerants; fully sealed hermetic compressors sourced from internationally certified suppliers.
- Reinforced silicone rubber door gasket maintaining consistent sealing performance across −60 °C to +120 °C without hardening, cracking, or adhesion loss.
- Standard 50 mm-diameter test port (with brass plug and silicone seal) for signal, power, or pneumatic feedthrough during live-device testing.
- Comprehensive safety suite: over-temperature cutoff, compressor/fan overload detection, ground-fault circuit interruption (GFCI), and automatic power disconnection upon alarm activation.
- Energy-efficient design featuring intelligent compressor cycling, timed start/stop scheduling, and power-on recovery functionality after grid interruption.
Sample Compatibility & Compliance
The THL-C150-I accommodates samples up to 500 mm × 500 mm × 600 mm (interior volume: 150 L), with two adjustable stainless-steel shelves included as standard. It supports static and dynamic thermal profiling for electronic assemblies, automotive ECUs, aerospace components, polymer specimens, battery modules, and medical device packaging. The chamber meets essential requirements of MIL-STD-810H Method 502.7 (Low Temperature) and Method 501.7 (High Temperature), as well as ASTM D3418 (Thermal Transitions of Plastics). While not intrinsically safe, it conforms to CE marking directives (2014/30/EU EMC, 2014/35/EU LVD) and RoHS 2011/65/EU material restrictions. Optional RS485 or USB communication interfaces enable integration into lab-wide environmental monitoring networks compliant with ISO/IEC 17025 documentation traceability standards.
Software & Data Management
Embedded firmware provides real-time logging of chamber temperature, setpoint, runtime, power status, and alarm history with timestamped entries stored internally for ≥30 days. Data export is supported via USB flash drive in CSV format compatible with Excel, MATLAB, or statistical process control (SPC) platforms. Optional PC software (DRETOP LabLink™) enables remote supervision, multi-chamber synchronization, automated report generation (PDF/Excel), and audit trail compliance per FDA 21 CFR Part 11 when configured with user authentication and electronic signature modules. All logged parameters are time-stamped with millisecond resolution and support manual annotation of test events (e.g., “sample inserted”, “door opened”).
Applications
- Reliability assessment of PCBAs under thermal shock conditions per IPC-9701A.
- Material characterization of elastomers, composites, and adhesives per ISO 62 and ASTM D638.
- Pre-conditioning of lithium-ion battery cells prior to cycle life testing (UN 38.3 Section 38.3.4).
- Validation of automotive infotainment systems per ISO 16750-4 (Temperature Cycling).
- Stability testing of pharmaceutical packaging per ICH Q1A(R2) guidelines (accelerated conditions).
- Qualification of avionics enclosures per DO-160G Section 4 (Operating Temperature).
- Environmental screening of optical sensors, MEMS devices, and semiconductor packages.
FAQ
What is the maximum sample weight this chamber can accommodate?
The internal structure supports uniformly distributed loads up to 30 kg without compromising airflow or temperature uniformity.
Is remote monitoring supported out-of-the-box?
Yes—RS485 Modbus RTU protocol is standard; Ethernet/IP or Wi-Fi modules are available as factory-installed options.
Can the chamber perform rapid thermal cycling between −60 °C and +120 °C?
While designed for high-fidelity steady-state and ramped profiles, the specified heating and cooling rates (1–3 °C/min and 0.7–1 °C/min respectively) define its thermal transition capability—not ultra-fast cycling.
Does the unit comply with GLP or GMP documentation requirements?
With optional LabLink™ software and enabled audit trail features, it satisfies ALCOA+ principles for data integrity in regulated environments.
What maintenance intervals are recommended for compressor and filter systems?
Compressor oil inspection every 24 months; condenser coil cleaning every 6 months; air intake filter replacement every 3 months under continuous operation.
