QJCK-350 High-Low Temperature and Humidity Cycling Environmental Test Chamber

Overview

The QJCK-350 High-Low Temperature and Humidity Cycling Environmental Test Chamber is an engineered precision system designed to replicate dynamic climatic stress conditions for reliability validation of materials and finished products. Based on the fundamental principles of forced-air convection thermal management and saturated steam/humidification control via stainless-steel immersion heaters and PID-regulated refrigerant expansion, the chamber delivers tightly controlled, repeatable temperature and humidity profiles across wide operational ranges. It supports both steady-state and cyclic testing protocols—including temperature-only cycling, humidity-only conditioning, and combined temperature-humidity stress sequences—enabling rigorous evaluation of product robustness under real-world environmental exposure scenarios. Its architecture complies with the physical test requirements defined in IEC 60068-2 series standards and corresponding Chinese national standards (GB/T 2423), making it suitable for use in R&D labs, quality assurance departments, and third-party certification facilities conducting environmental qualification per ISO/IEC 17025-accredited test methods.

Key Features

• Wide operational envelope: −40 °C to +150 °C temperature range coupled with 10–99.9 %RH humidity control, enabling simulation of extreme terrestrial and storage environments.
• High-fidelity regulation: Dual-channel PID controllers govern independent refrigeration and humidification subsystems, ensuring stable setpoint maintenance with temperature accuracy of ±0.5 °C and humidity accuracy of ±2.5 %RH.
• Programmable multi-segment logic: Supports up to 120 user-defined test programs, each containing up to 100 individual segments (total 1200 steps), accommodating complex ramp-hold-cycle sequences required for automotive AEC-Q200 or MIL-STD-810G Method 502.6 validation.
• Uniform internal environment: Optimized airflow design with rear-mounted centrifugal blower and perforated stainless-steel shelves achieves temperature uniformity of ±2.0 °C and humidity uniformity of ±3.0 %RH across the full working volume (450 × 400 × 350 mm).
• Robust mechanical construction: Double-walled insulated chamber with high-density polyurethane foam (≥100 mm thickness), electro-galvanized steel exterior, and SUS304 interior surfaces ensure long-term thermal integrity and corrosion resistance.
• Integrated safety systems: Over-temperature cutoff, compressor high-pressure protection, humidity sensor self-diagnostic, and door interlock prevent uncontrolled operation and support GLP-compliant laboratory practice.

Sample Compatibility & Compliance

The QJCK-350 accommodates a broad spectrum of sample types—including printed circuit assemblies (PCBAs), polymer enclosures, lithium-ion battery modules, optical sensors, medical device housings, and aerospace-grade composites—without compromising chamber performance or calibration traceability. All operational parameters adhere to internationally recognized environmental test standards, including IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-14 (temperature cycling), and IEC 60068-2-30 (damp heat, cyclic). For regulated industries, the chamber’s programmable logging capability (with timestamped data export) supports audit readiness under FDA 21 CFR Part 11 when paired with validated software and electronic signature workflows. Calibration certificates are issued traceable to NIM (National Institute of Metrology, China) or equivalent national metrology institutes.

Software & Data Management

The embedded controller features a 7-inch TFT LCD touchscreen interface with multilingual support (English, Chinese, Spanish), intuitive navigation, and real-time graphical display of temperature/humidity curves. All test data—including setpoints, actual values, alarm events, and segment transitions—are logged at user-configurable intervals (1–600 seconds) and stored internally for ≥30 days. Data export is supported via USB 2.0 to CSV or Excel-compatible formats for post-test analysis in MATLAB, JMP, or Minitab. Optional PC-based software (QJSoft v3.2) provides remote monitoring, automated report generation (PDF/HTML), trend analysis, and deviation alerting—fully compatible with enterprise LIMS and MES integration via Modbus TCP or OPC UA protocols.

Applications

• Electronics reliability screening: Thermal cycling of semiconductor packages, solder joint fatigue assessment, and moisture sensitivity level (MSL) pre-conditioning per J-STD-020.
• Automotive component validation: Climate endurance testing of infotainment displays, ADAS camera housings, and EV battery thermal management systems under ISO 16750-4.
• Pharmaceutical packaging stability: Accelerated aging studies of blister packs and cold-chain transport containers under ICH Q1A(R2) guidelines.
• Aerospace material qualification: Composite curing verification and outgassing behavior analysis per ASTM E595 and ECSS-Q-ST-70-02C.
• Quality conformance testing: Final acceptance testing for industrial sensors, IoT edge devices, and smart home appliances prior to market release.

FAQ

What standards does the QJCK-350 comply with for environmental testing?
It meets IEC 60068-2-1, -2, -14, and -30, as well as GB/T 2423.1–2023, GB/T 2423.2–2023, GB/T 2423.3–2016, and GB/T 2423.4–2008.
Is the chamber suitable for continuous 24/7 operation in a production QA lab?
Yes—the dual-stage refrigeration system, redundant fan control logic, and thermally shielded electrical cabinet enable uninterrupted operation with scheduled preventive maintenance every 1,500 hours.
Can test profiles be imported/exported between multiple QJCK units?
Yes—profile files (.qjp format) are interoperable across all QJCK-3xx series chambers using USB flash drives or network transfer.
Does the system support external data acquisition interfaces?
Yes—it includes RS-485 (Modbus RTU), Ethernet (Modbus TCP), and optional analog 4–20 mA outputs for integration into centralized facility monitoring systems.
What documentation is provided for regulatory audits?
Each unit ships with Factory Acceptance Test (FAT) report, calibration certificate (NIM-traceable), CE declaration of conformity, and full electrical schematics for GLP/GMP compliance review.