JianHu JH-Series Programmable Thermal Cycling Chamber

Overview

The JianHu JH-Series Programmable Thermal Cycling Chamber is an industrial-grade environmental test system engineered for precise, repeatable, and traceable thermal stress evaluation of materials, components, and finished products across aerospace, automotive, semiconductor, medical device, and academic research applications. Operating on the principle of forced-air convection combined with dual-stage mechanical compression refrigeration and PID-controlled resistive heating, the chamber delivers stable thermal environments from –70 °C to +150 °C. Its explosion-proof configuration complies with Class I, Division 1 hazardous location requirements per NEC Article 500, enabling safe testing of volatile substances, battery cells, and energetic materials under controlled thermal transients. The chamber’s structural integrity—featuring 304 stainless steel inner walls, high-density polyurethane insulation (≥120 mm), and hermetically sealed door gaskets—ensures minimal thermal leakage and long-term calibration stability.

Key Features

• Wide operational temperature range: –70 °C to +150 °C, validated per IEC 60068-3-5 for thermal performance
• Explosion-proof certified design (ATEX/IECEx optional), including intrinsically safe sensors, spark-resistant fan motors, and purge-compatible electrical enclosures
• Dual-stage cascade refrigeration system with environmentally compliant R-404A/R-23 mixed-refrigerant circuitry for rapid sub-zero pull-down
• PID-driven heating and cooling modulation with adaptive algorithm to minimize overshoot and stabilize setpoints within ±0.3 °C (typical)
• 7-inch color touchscreen HMI with multi-user access levels, profile scheduling (up to 99 segments), and USB data export
• Integrated Ethernet and RS-485 interfaces supporting Modbus TCP/RTU for SCADA integration and centralized lab management
• Real-time data logging at configurable intervals (1s–300s), with automatic CSV generation and timestamped event tagging

Sample Compatibility & Compliance

The JH-Series accommodates a broad spectrum of test specimens—including PCB assemblies, lithium-ion pouch/prismatic cells, polymer composites, optical lenses, and sealed electronic enclosures—without compromising thermal uniformity or safety. Chamber interior dimensions are customizable (standard variants: 400 × 400 × 500 mm W×D×H up to 1000 × 1000 × 1000 mm), with removable shelves and cable ports (IP65-rated). All units undergo factory verification per ISO/IEC 17025-accredited procedures, including temperature mapping (9-point grid, per ASTM E2297), sensor calibration traceability to NIM (China National Institute of Metrology), and electromagnetic compatibility testing per CISPR 11. The system meets GLP/GMP documentation requirements with full audit trail capability, electronic signatures, and user activity logs aligned with FDA 21 CFR Part 11 Annex 11 expectations.

Software & Data Management

JianHu’s proprietary JianHuTest Control Suite (v4.2) runs natively on Windows 10/11 and supports both local operation and remote monitoring via secure HTTPS. The software enables creation of complex thermal profiles—including ramp-soak cycles, step transitions, and dwell-hold sequences—with programmable rate limits (0.1–10 °C/min). Data integrity safeguards include cyclic redundancy check (CRC) on stored logs, automatic backup to network drives, and encrypted database storage. For regulated environments, the system provides configurable electronic signature workflows, role-based permissions (Admin/Operator/Viewer), and change-control history for all parameter modifications. Raw data exports comply with ASTM E1447 and ISO/IEC 17025 reporting formats, facilitating direct import into LIMS platforms such as LabWare or Thermo Fisher SampleManager.

Applications

• Aerospace component qualification per RTCA DO-160 Section 4 (Temperature Variation) and SAE ARP4754A
• Automotive electronics validation against ISO 16750-4 (Electrical Loads) and GMW3172 (Thermal Shock)
• Lithium battery safety testing per UL 1642, UN 38.3 T1–T5, and IEC 62133-2
• Pharmaceutical packaging stability studies aligned with ICH Q1A(R2) and USP
• Material science investigations of coefficient of thermal expansion (CTE), glass transition (Tg), and embrittlement thresholds
• Reliability acceleration testing (HALT/HASS) in conjunction with vibration and power cycling subsystems

FAQ

What standards does the JH-Series chamber comply with?
It conforms to IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), ISO 16750-4, MIL-STD-810H Methods 502.7 and 503.5, and supports validation to ASTM E2297 for thermal mapping.
Is remote monitoring and control supported?
Yes—via Ethernet-connected JianHuTest Control Suite with TLS 1.2 encryption, allowing secure off-site supervision and intervention through authenticated web interface.
Can the chamber be integrated into an existing test automation framework?
Absolutely—the system offers native Modbus TCP/RTU, OPC UA (optional), and RESTful API endpoints for seamless integration with NI TestStand, Keysight PathWave, or custom MES environments.
Does JianHu provide IQ/OQ/PQ documentation packages?
Yes—fully customizable qualification protocols (per GAMP5) are available, including pre-executed templates, witness logs, and vendor-supplied calibration certificates traceable to national standards.
What maintenance intervals are recommended for optimal performance?
Compressor oil and filter replacement every 24 months; annual verification of sensor accuracy and thermal uniformity mapping; biannual inspection of explosion-proof seals and grounding continuity per NFPA 70E.