Labonce labonce-500JS Environmental Test Chamber for Temperature and Humidity Cycling

Overview

The Labonce labonce-500JS Environmental Test Chamber is an engineered solution for rigorous temperature and humidity cycling validation of electronic components, electrical equipment, automotive parts, aerospace materials, and polymer-based products. It operates on the principle of controlled convective heat and mass transfer within a sealed, insulated chamber, enabling precise replication of real-world environmental stress profiles—including extreme cold, elevated thermal load, and high-humidity exposure—over extended durations. This system supports accelerated life testing, qualification protocols, and reliability screening under defined climatic conditions per international test standards. Its architecture integrates thermodynamic stability with mechanical robustness, ensuring reproducible environmental profiles critical for R&D labs, quality assurance departments, and third-party certification facilities.

Key Features

• Programmable multi-segment touchscreen controller supporting up to 99 cycles and 999 steps per cycle, with seamless transition between heating, cooling, and humidification phases;
• Dual-channel air circulation system optimized for uniform thermal distribution—verified to maintain ±0.5 °C temperature fluctuation and ±2.0 °C spatial deviation across the full 500 L working volume;
• High-efficiency refrigeration circuit featuring imported hermetic industrial compressors, low-noise axial fans, and copper-aluminum finned evaporator/condenser assemblies for uninterrupted operation over 10,000+ hours;
• Corrosion-resistant interior constructed entirely from AISI 304 stainless steel (1.2 mm thickness), combined with electrostatically applied epoxy-polyester coating on the outer cabinet for long-term structural integrity;
• Integrated safety architecture including dual-stage compressor protection (thermal overload + high-pressure cut-off), independent over-temperature safeguard with mechanical backup, and real-time deviation alarms for both temperature and humidity setpoints;
• Onboard data logging with non-volatile memory storage (≥30 days at 1-minute sampling interval), exportable via standard USB 2.0 interface in CSV format compatible with LIMS and statistical process control software.

Sample Compatibility & Compliance

The labonce-500JS accommodates diverse sample configurations—from PCB assemblies and battery modules to molded plastic housings and sealed optical sensors—within its 800 × 700 × 900 mm internal workspace. Two adjustable stainless-steel shelves (load capacity: 25 kg each) allow flexible positioning while preserving airflow integrity. The chamber meets the dimensional, performance, and instrumentation requirements specified in GB/T 10592–2008, and its operational envelope aligns with widely adopted test methods including IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-30 (damp heat, cyclic), and MIL-STD-810G Method 502.5. While not certified to ISO/IEC 17025 or accredited per ANSI Z540, its traceable calibration paths support GLP-compliant documentation workflows when paired with external NIST-traceable reference probes.

Software & Data Management

Data acquisition is managed through the embedded controller’s built-in logging engine, which records timestamped values for chamber temperature, relative humidity, setpoint tracking error, and alarm status. Exported USB files include column headers compliant with ASTM E2918–22 for environmental test data archiving. Optional integration with Labonce’s PC-based LabControl Suite (v3.2+) enables remote monitoring, automated report generation (PDF/Excel), and audit trail functionality aligned with FDA 21 CFR Part 11 requirements—including electronic signatures, user-level access controls, and immutable event logs. All firmware updates are delivered via signed binary packages with SHA-256 checksum verification.

Applications

• Electrical & electronic product qualification per JEDEC JESD22-A104 (temperature cycling) and JESD22-A110 (highly accelerated temperature and humidity stress test);
• Automotive component validation against ISO 16750-4 (electrical loads) and GMW15022 (climatic endurance);
• Pharmaceutical packaging stability assessment under ICH Q1A(R2) intermediate and accelerated storage conditions;
• Polymer aging studies involving hydrolytic degradation, crystallinity shifts, and dimensional stability evaluation;
• Material compatibility testing for adhesives, conformal coatings, and encapsulants exposed to combined thermal-hygric stress;
• Pre-shipping environmental screening for military-grade hardware subject to MIL-STD-810H environmental engineering considerations.

FAQ

What temperature and humidity ranges does the labonce-500JS support?
The standard configuration offers –40 °C to +150 °C temperature control and 20–98 % RH humidity regulation. Optional low-temperature variants extend the lower limit to –60 °C.
Is the chamber suitable for continuous unattended operation?
Yes—designed for 24/7 operation with redundant safety circuits, thermal management redundancy, and predictive maintenance alerts triggered by compressor discharge temperature trends.
Can test profiles be exported and re-imported between instruments?
Profile files (.lcp format) are fully portable across Labonce JS-series chambers running firmware v2.4 or later, enabling cross-lab method harmonization.
Does the system support external sensor inputs for product surface monitoring?
Two auxiliary Pt100 input channels are available (optional) for real-time measurement of DUT surface temperature or internal chamber dew point validation.
How is calibration traceability maintained?
The controller includes dedicated calibration offset fields for temperature and humidity sensors. Users may apply corrections based on periodic verification using NIST-traceable reference hygrometers (e.g., Rotronic HC2-S, Vaisala HMP155) per ISO/IEC 17025 procedures.