Jianhu JH-THC Series High-Low Temperature & Humidity Environmental Test Chamber

Overview

The Jianhu JH-THC Series High-Low Temperature & Humidity Environmental Test Chamber is an engineered solution for precision climate simulation in reliability validation and accelerated life testing. Based on dual-loop coupled control architecture—separately regulating refrigeration, heating, and humidification subsystems—the chamber delivers stable, repeatable thermal-hygrometric profiles across extreme operating conditions. It operates on the physical principle of forced-air convection with multi-stage heat exchange, integrated steam injection humidification, and adaptive dew-point suppression to maintain fidelity under high-load dynamic cycling. Designed for mission-critical applications in automotive battery systems, semiconductor packaging, aerospace avionics, and regulated pharmaceutical stability studies, the JH-THC Series meets foundational requirements of IEC 60068-2, MIL-STD-810H, GB/T 2423, and ISO 16750-4. Its core function is not merely environmental replication but deterministic stress application—enabling correlation between laboratory exposure and real-world field performance through traceable, auditable parameter control.

Key Features

• Adaptive Fuzzy-PID Control Algorithm: Dynamically adjusts actuator response based on real-time thermal inertia, load mass, and ambient drift—reducing overshoot and stabilizing setpoints within ±0.1 °C over 24-hour continuous operation.
• Triple-Stage Refrigeration System: Combines cascade mechanical compression with liquid nitrogen boost capability for rapid cooldown to −70 °C while maintaining low vibration and oil-free condensate integrity.
• Explosion-Proof Configuration: Optional ATEX Zone 1 / IECEx certification compliant variants available with intrinsically safe sensors, purge-protected controllers, and reinforced stainless-steel chamber walls.
• High-Fidelity Humidity Management: Ultrasonic steam generator with PID-regulated saturation chamber ensures ±1.5 %RH fluctuation even at 95 %RH / +85 °C—validated per ISO 12780 and USP .
• Non-Standard Integration Ready: Modular frame design supports custom interior volume, porting layout, internal lighting, EMI shielding, and electrical feedthroughs—fully documented per ASME BPVC Section VIII.
• Thermal Field Optimization: Patented counter-flow air distribution ductwork and insulated double-wall construction achieve ±0.5 °C uniformity across full working volume (per IEC 60068-3-5 Annex B).

Sample Compatibility & Compliance

The JH-THC Series accommodates test specimens ranging from microelectronic packages (200 kg), with customizable mounting fixtures and load-dependent airflow recalibration. All standard configurations comply with ISO/IEC 17025 calibration traceability pathways and support GLP/GMP audit readiness via built-in calibration log retention. The system satisfies mandatory clauses of FDA 21 CFR Part 11 for electronic records and signatures when paired with Jianhu’s validated IQ/OQ/PQ documentation package. Humidity control performance adheres to ASTM E145 Class II accuracy specifications; temperature ramp rates are verified against IEC 60068-3-11 for thermal shock profiling. Third-party verification reports (SGS, TÜV Rheinland) are available upon request for regulatory submissions.

Software & Data Management

Jianhu’s proprietary TH-Link™ software suite provides local HMI and remote web-based supervision via encrypted TLS 1.3 interface. It supports multi-segment programmable profiles (up to 999 steps), real-time trending with overlay comparison, automatic alarm escalation (email/SMS), and CSV/Excel export with time-stamped metadata. Audit trails record all user actions—including setpoint changes, manual overrides, and calibration events—with immutable timestamps aligned to NTP-synchronized system clock. For enterprise integration, OPC UA and Modbus TCP protocols enable bidirectional communication with MES/LIMS platforms. Data integrity safeguards include write-once storage mode, SHA-256 file hashing, and optional FIPS 140-2 compliant encryption modules—meeting requirements for ISO 13485 and ICH Q5C compliance workflows.

Applications

• Battery Module Thermal Runaway Validation: Simultaneous −40 °C soak and +85 °C/humidity cycling per UL 2580 and GB/T 31467.3.
• Semiconductor Burn-In & HTOL Testing: 1000-hour elevated temperature operating life tests at 125 °C/85 %RH with real-time leakage current monitoring interfaces.
• Aerospace Component Qualification: Multi-axis thermal gradient mapping for flight control actuators under GJB 150.9A and DO-160G Section 4.5.
• Pharmaceutical Stability Chambers: ICH Q1A(R3)-compliant long-term (25 °C/60 %RH) and accelerated (40 °C/75 %RH) storage condition validation.
• Automotive ECUs: Combined temperature-humidity-vibration profiles synchronized with CAN bus stimulus per ISO 16750-4 and LV-124.

FAQ

What standards does the JH-THC Series comply with for pharmaceutical stability testing?
It meets ICH Q1A(R3), USP , and WHO TRS 992 Annex 6 requirements when operated with validated TH-Link™ software and calibrated sensor suite.
Can the chamber be integrated into an existing factory automation system?
Yes—OPC UA, Modbus TCP, and Ethernet/IP drivers are included; custom API wrappers available for Siemens PCS7, Rockwell FactoryTalk, or Yokogawa CENTUM VP.
Is remote calibration verification supported?
Field calibration checks using NIST-traceable portable references can be initiated remotely; results auto-log into the audit trail with digital signature capture.
What is the warranty coverage and service response commitment?
Standard 24-month parts-and-labor warranty; 4-hour remote diagnostics SLA and 48-hour onsite technician dispatch globally (excl. remote regions).
How is temperature uniformity validated during factory acceptance testing?
Per IEC 60068-3-5, 16 PT100 sensors are deployed in a 4×2×2 grid across the working volume for 72-hour continuous monitoring at three setpoints (−40 °C, 25 °C, +85 °C).