Jianhu JH-TH Series High-Low Temperature Test Chamber

Overview

The Jianhu JH-TH Series High-Low Temperature Test Chamber is an engineered environmental simulation system designed for precise thermal stress testing of electronic components, automotive battery modules, semiconductor packaging, and aerospace materials. Based on forced-air convection and dual-stage cascade refrigeration architecture, it delivers stable, repeatable temperature profiles across a wide operational range of -70 °C to +150 °C. Its core function is to replicate real-world ambient thermal extremes—such as arctic winter conditions or desert summer exposure—to evaluate material integrity, dimensional stability, electrical performance degradation, and long-term reliability under accelerated aging protocols. The chamber complies with the fundamental test methods defined in GB/T 2423 (equivalent to IEC 60068-2), enabling standardized qualification testing for R&D labs, QC departments, and third-party certification bodies serving Tier-1 automotive suppliers, EV battery OEMs, and semiconductor foundries.

Key Features

• Robust dual-stage compressor refrigeration system with environmentally compliant R404A/R23 mixed refrigerant, optimized for rapid pull-down to -70 °C without cryogenic liquid nitrogen dependency
• High-efficiency air circulation design featuring tangential multi-blade impellers and calibrated baffle distribution, ensuring ≤±2.0 °C temperature uniformity across the working volume
• Microprocessor-based PID temperature controller with 0.1 °C resolution, real-time deviation compensation, and programmable ramp-soak profiles (up to 99 segments)
• Explosion-proof configuration available per GB 3836.1–2010 (IEC 60079-0), including intrinsically safe wiring, explosion-resistant viewing window, and spark-free internal components
• Stainless steel 304 inner chamber with seamless welding, electrostatically coated outer shell, and double-layer vacuum-insulated door gasket for minimal thermal leakage
• Integrated safety interlocks: over-temperature cut-off, compressor high-pressure protection, door open alarm, and independent mechanical temperature limiter

Sample Compatibility & Compliance

The JH-TH series accommodates samples up to 1000 L working volume (customizable), supporting full-pack battery modules (e.g., 400 V/90 kWh traction packs), wafer-level IC carriers, ADAS sensor housings, and polymer composite chassis parts. It satisfies test condition requirements specified in ISO 16750-4 (road vehicles — environmental conditions), AEC-Q200 (passive components), JEDEC JESD22-A104 (temperature cycling), and MIL-STD-810G Method 501.6/502.6. All units undergo factory calibration traceable to CNAS-accredited standards, with optional UKAS/NIST-traceable certificates available upon request. Documentation packages support GLP/GMP audit readiness, including IQ/OQ protocols and 21 CFR Part 11-compliant electronic records when paired with optional validation software.

Software & Data Management

Equipped with Jianhu’s proprietary TH-Link™ control software (Windows-based), the chamber supports real-time multi-channel data logging at 1-second intervals, automatic report generation in PDF/Excel formats, and remote monitoring via Ethernet or RS485 Modbus RTU. Audit trail functionality logs all operator actions—including setpoint changes, profile uploads, and alarm acknowledgments—with user ID and timestamp. Data export complies with ASTM E2500-13 guidelines for analytical instrument data integrity. Optional cloud gateway enables integration into enterprise MES/QMS platforms (e.g., Siemens Opcenter, ETQ Reliance) for centralized test asset management and SPC trend analysis.

Applications

• Battery thermal runaway propagation studies under controlled low-temperature charge/discharge cycles
• Qualification testing of power electronics (IGBTs, SiC MOSFETs) per AQG324 Rev. D
• Thermal shock pre-conditioning of MEMS accelerometers prior to vibration screening
• Material coefficient of thermal expansion (CTE) measurement via dimensional metrology in situ
• Accelerated life testing of conformal coatings and encapsulants used in automotive ECUs
• Validation of thermal interface materials (TIMs) under sustained high-temperature soak conditions

FAQ

What standards does this chamber meet for automotive component validation?
It fulfills GB/T 2423.1 (cold test), GB/T 2423.2 (dry heat), and GB/T 2423.22 (temperature change), which align with ISO 16750-4 clauses for climatic loading. Full compliance documentation is provided with each unit.
Can the chamber be integrated into an automated test cell?
Yes — standard Modbus TCP/IP and optional Profibus-DP interfaces enable seamless PLC integration for unattended batch testing and synchronized stimulus-response workflows.
Is NIST-traceable calibration included with purchase?
Factory calibration is CNAS-traceable; UKAS/NIST-certified calibration kits and on-site verification services are available as add-ons.
How is temperature uniformity verified during installation qualification?
IQ protocol includes 9-point sensor mapping using calibrated PT100 probes per IEC 60068-3-5, with acceptance criteria of ±2.0 °C across the entire usable volume.
Does the explosion-proof version support Class I, Division 1 hazardous area operation?
The certified Ex d IIB T4 Gb configuration meets GB 3836.1–2010 and IEC 60079-0 for use in Zone 1 gas environments with hydrogen-compatible sealing.