Jianhu JH-Series Walk-in Environmental Test Chamber – Ultra-Large Capacity Thermal Cycling Chamber

Overview

The Jianhu JH-Series Walk-in Environmental Test Chamber is an industrial-grade, ultra-large-volume thermal cycling chamber engineered for full-system environmental stress screening (ESS) and qualification testing of oversized equipment and subsystems. Designed around the principles of forced-air convection, multi-stage refrigeration, and precision PID-based closed-loop temperature and humidity control, this chamber enables reproducible simulation of extreme ambient conditions—including rapid thermal transients, sustained low-temperature soak, high-temperature bake-out, and combined temperature-humidity profiles. Its structural architecture complies with fundamental requirements for walk-in test enclosures defined in ISO 16750-4 (road vehicles), IEC 60068-2 series (environmental testing), and GB/T 2423 (Chinese national standards for basic environmental testing procedures). Unlike benchtop or reach-in chambers, the JH-Series accommodates complete assemblies—such as power distribution cabinets, telecom base station racks, aerospace ground support equipment, and large-scale medical imaging systems—without requiring disassembly or partial testing, thereby preserving system-level integrity during validation.

Key Features

• Ultra-large internal volume (30–50 m³), fully customizable footprint and height (up to 3.5 m clearance) to accommodate full-size industrial equipment
• Wide operational temperature range: -70°C to +150°C, supported by cascade refrigeration system with environmentally compliant R404A/R23 dual-circuit compressors
• High-stability temperature control: ±0.3°C setpoint accuracy, ±2.0°C uniformity across working volume per IEC 60068-3-5
• Programmable thermal ramp rates from 1.0°C/min to 3.0°C/min, configurable via embedded controller or PC-based software
• Optional integrated humidity control module (20–98% RH), calibrated per ISO 4677 and traceable to NIM (National Institute of Metrology, China)
• Double-wall insulated construction with ≥150 mm thick polyurethane foam (thermal conductivity ≤0.022 W/m·K), aluminum-clad interior panels, and stainless-steel exterior
• Dual redundant safety systems: independent over-temperature cutoff, door interlock, and real-time refrigerant pressure monitoring
• Industrial-grade air circulation system featuring three axial fans (total airflow ≥12,000 m³/h) and optimized duct geometry for uniform thermal distribution

Sample Compatibility & Compliance

The JH-Series chamber is validated for testing complete functional units where dimensional constraints preclude use of conventional test enclosures. Compatible sample categories include: electrical switchgear up to 3 m × 2 m × 2.5 m; outdoor telecom shelters; railway signaling cabinets; military vehicle subsystems; and photovoltaic inverters rated above 500 kW. All configurations meet mechanical and thermal safety provisions of EN 61000-6-4 (EMC immunity), GB 4793.1 (electrical safety), and ISO 13849-1 (safety-related control systems). Optional humidity capability supports testing per IEC 60068-2-78 (damp heat, cyclic) and MIL-STD-810H Method 507.6. The chamber’s data logging architecture supports audit-ready records compliant with GLP and GMP environments when paired with optional 21 CFR Part 11–enabled software.

Software & Data Management

Standard configuration includes a 10.1-inch industrial touchscreen HMI running embedded Linux OS with real-time graphing, multi-segment profile programming, and USB data export. Optional Jianhu TestSuite™ software (Windows-based) provides remote monitoring via Ethernet/Wi-Fi, automated report generation (PDF/CSV), alarm history with timestamped event logs, and user-access-level management (admin/operator/viewer). All temperature and humidity channels are sampled at 1 Hz with 0.1°C/0.1% RH resolution. Data files include metadata such as operator ID, test sequence number, calibration certificate IDs, and sensor location mapping—ensuring full traceability for internal QA audits or third-party certification bodies (e.g., SGS, TÜV, CNAS).

Applications

• Qualification testing of energy infrastructure components (transformers, SCADA cabinets, grid-scale battery enclosures) per IEEE 1613 and IEC 62271-200
• Environmental stress screening (ESS) of avionics ground support equipment prior to flight-line deployment
• Thermal aging studies for electric vehicle charging stations (IEC 62196, UL 2231)
• Reliability validation of outdoor LED lighting systems under accelerated temperature-humidity cycling (JEDEC JESD22-A101)
• Pre-compliance testing for automotive ECUs per ISO 16750-4 (powertrain and chassis modules)
• Research-grade climate simulation for materials science labs studying polymer degradation, coating adhesion, or composite delamination mechanisms

FAQ

What is the standard lead time for custom-configured JH-Series chambers?
Typical manufacturing and factory acceptance testing (FAT) duration is 12–16 weeks from PO confirmation, depending on volume specification and optional features.
Can the chamber be integrated into an existing facility’s BMS or MES?
Yes—Modbus TCP and OPC UA interfaces are available as factory-installed options for seamless integration with building management systems or manufacturing execution systems.
Is on-site installation and commissioning included?
Standard delivery includes freight to destination port; on-site installation, thermal mapping (per ISO 17025-accredited protocol), and operator training are offered as billable services.
What calibration documentation is provided upon delivery?
Each unit ships with a factory calibration certificate covering all primary sensors (PT100 temperature, capacitive RH), traceable to NIM standards, plus a full FAT report including uniformity mapping and ramp-rate verification.
Does Jianhu offer extended warranty or preventive maintenance contracts?
Yes—comprehensive service agreements (1–5 years) include biannual preventive maintenance, priority technical support, spare parts lock-in pricing, and firmware update notifications.