JianHu JH Series Temperature and Humidity Controlled Environmental Test Chamber

Overview

The JianHu JH Series Temperature and Humidity Controlled Environmental Test Chamber is an engineered solution for precise, repeatable simulation of ambient climatic conditions in laboratory and industrial quality assurance environments. Based on the fundamental principles of psychrometric control and forced-air thermal convection, this chamber maintains stable, programmable temperature and relative humidity profiles across its working volume—enabling accelerated environmental stress testing of materials, components, and finished products. Designed for long-term operational reliability under continuous duty cycles, the JH Series integrates dual independent control loops for temperature and humidity, utilizing PID-regulated heating, refrigeration, and steam-based humidification subsystems. Its structural integrity derives from CNC-machined stainless steel inner chambers, insulated double-wall construction with high-density polyurethane foam, and corrosion-resistant exterior cladding—ensuring thermal stability, low leakage rates, and minimal energy drift over extended test durations.

Key Features

• Robust upright chamber architecture with air-cooled refrigeration system—eliminates need for external water cooling infrastructure
• Dual-loop microprocessor-based controller with real-time monitoring, data logging, and alarm-triggered shutdown protocols
• Steam-type humidification system with deionized water reservoir and automatic drainage—minimizes mineral deposit accumulation and ensures RH reproducibility
• High-efficiency centrifugal circulation fan with adjustable airflow velocity—guarantees uniform temperature and humidity distribution per ISO 17025 spatial mapping requirements
• Comprehensive safety suite including over-temperature cut-off, compressor high-pressure protection, low-water-level interlock, and phase-failure detection
• Modular electrical cabinet with labeled, traceable wiring harnesses—facilitates rapid diagnostics, compliance audits, and field service interventions

Sample Compatibility & Compliance

The JH Series accommodates a broad spectrum of test specimens—from printed circuit boards and lithium-ion battery modules to automotive ECUs, polymer composites, pharmaceutical packaging, and textile swatches. Its standardized chamber geometry supports integration with third-party fixtures, load racks, and sensor arrays for multi-point environmental profiling. From a regulatory standpoint, the system’s control architecture and data handling protocols are structured to support GLP and GMP-aligned validation processes. It conforms to key international test standards including IEC 60068-2-30 (damp heat cyclic), ASTM D4332 (conditioning containers), GB/T 2423.3 (constant damp heat), and GB/T 2423.4 (cyclic damp heat). Optional IQ/OQ documentation packages and 21 CFR Part 11-compliant software add-ons are available for regulated industries requiring full audit trails and electronic signature capability.

Software & Data Management

The embedded controller provides intuitive touchscreen operation with multilingual UI (English, Chinese, Spanish), preloaded test profiles, and customizable ramp-soak-hold sequences. All environmental parameters—including chamber setpoints, actual readings, alarm status, and runtime counters—are logged at user-defined intervals (1 s to 60 min resolution) and exportable via USB or Ethernet to CSV or XML formats. For enterprise-level integration, optional LAN-enabled firmware supports Modbus TCP and OPC UA communication protocols—enabling centralized monitoring across multiple chambers within a single facility. Data integrity safeguards include write-protected memory buffers, timestamped event logs, and configurable retention policies aligned with ISO/IEC 17025 Clause 7.5.2 requirements for record preservation.

Applications

• Electronics reliability testing: Thermal cycling of PCBAs, qualification of conformal coatings, and moisture sensitivity level (MSL) screening per JEDEC J-STD-020
• Automotive component validation: Climate endurance evaluation of infotainment systems, ADAS sensors, and EV battery thermal management housings under ISO 16750-4
• Materials science research: Hygrothermal aging studies of thermoplastics, elastomers, and fiber-reinforced composites per ASTM D570 and ISO 62
• Pharmaceutical stability assessment: ICH Q1A-compliant long-term and accelerated stability trials for drug substances and primary packaging
• Academic and metrology labs: Reference environment conditioning for calibration laboratories, sensor characterization, and inter-laboratory comparison exercises

FAQ

What is the standard warranty coverage for the JH Series chamber?
JianHu provides a 12-month parts-and-labor warranty from commissioning date, extendable to 24 months with annual maintenance agreement.
Can the chamber be validated for ISO/IEC 17025 accreditation?
Yes—factory-installed temperature/humidity mapping ports, NIST-traceable sensor calibration certificates, and IQ/OQ documentation templates are available upon request.
Is remote monitoring supported out-of-the-box?
Standard Ethernet connectivity enables basic SNMP-based status polling; full SCADA integration requires optional firmware upgrade and API license.
What maintenance intervals are recommended for optimal performance?
Quarterly inspection of condensate drain lines, humidifier electrodes, and air filter elements; annual verification of refrigerant charge and PID tuning parameters.
Are custom chamber dimensions available beyond standard configurations?
Yes—JianHu offers engineering consultation for bespoke internal volume, door orientation, and accessory integration (e.g., cable ports, viewing windows, internal lighting).