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 and accelerated environmental conditions in laboratory and industrial quality assurance settings. Based on the principle of dual-loop PID-controlled refrigeration, heating, and humidification/dehumidification systems, this upright chamber maintains stable thermal and hygric profiles across its operational envelope—enabling standardized evaluation of material stability, component reliability, and product durability under controlled stress conditions. Designed for compliance with internationally recognized environmental testing protocols—including IEC 60068-2-30 (damp heat cyclic), ASTM D4332 (conditioning containers), and GB/T 2423.3 (constant damp heat) and GB/T 2423.4 (cyclic damp heat)—the JH Series supports reproducible test execution in accordance with ISO/IEC 17025-accredited laboratories. Its air-cooled condensing architecture ensures stable long-duration operation without external water supply dependency, making it suitable for installation in standard lab environments with adequate ventilation.

Key Features

• High-stability dual-channel PID control system for independent regulation of temperature and relative humidity
• Large-format LCD touchscreen interface with intuitive navigation, real-time parameter display, and multi-step program storage (up to 100 segments)
• Corrosion-resistant stainless-steel inner chamber with seamless welding and electrostatically coated outer casing
• Energy-efficient hermetic compressor with eco-friendly R134a refrigerant and optimized heat exchanger design
• Ultrasonic humidifier with deionized water compatibility and automatic dry-run protection
• Integrated over-temperature, over-humidity, and sensor-failure safety interlocks compliant with IEC 61000-6-2 EMC standards
• Optional Ethernet or RS485 communication port for integration into centralized lab monitoring systems

Sample Compatibility & Compliance

The JH Series accommodates a broad spectrum of sample types—from printed circuit boards and polymer specimens to pharmaceutical packaging and automotive interior trim—within its standard upright chamber configuration. Chamber internal dimensions are customizable per client specification (standard variants available upon request); all configurations maintain uniformity performance within stated tolerances per ISO 16750-4 and MIL-STD-810H Section 507.2. The system meets mechanical and electrical safety requirements per GB 4793.1 and IEC 61010-1. For regulated industries, optional audit-trail-enabled firmware supports 21 CFR Part 11-compliant electronic records when paired with validated data acquisition software. Calibration certificates traceable to NIM (National Institute of Metrology, China) or UKAS-accredited providers are available upon request.

Software & Data Management

JianHu provides the JH-Link™ PC-based control and data logging software as standard equipment. This Windows-compatible application enables remote setup, real-time graphing of temperature/humidity trends, automated report generation (PDF/CSV), and alarm event logging with timestamped metadata. All logged data include operator ID, session start/stop times, setpoint history, and deviation alerts—supporting full traceability in GLP and GMP environments. Software updates are delivered via secure HTTPS portal; version history and change logs comply with ISO 9001:2015 clause 7.5.3. Optional cloud synchronization allows authorized users to access historical test data from any location, subject to configurable role-based permissions and TLS 1.2+ encryption.

Applications

• Electronics Reliability Testing: Evaluating solder joint integrity, conformal coating performance, and moisture sensitivity levels (MSL) per JEDEC J-STD-020
• Pharmaceutical Stability Studies: Conducting ICH Q1A(R2)-aligned long-term and accelerated stability trials for drug substances and products
• Automotive Component Validation: Assessing dashboard materials, wiring harnesses, and sensors under combined thermal cycling and humidity exposure per ISO 16750-4
• Polymer & Composite Aging: Monitoring dimensional stability, tensile strength retention, and surface degradation in high-RH tropical conditions
• Academic Materials Research: Supporting graduate-level investigations into hygrothermal expansion coefficients, glass transition shifts, and diffusion kinetics

FAQ

What is the standard calibration interval recommended for this chamber?
Annual calibration is recommended for routine QA use; semi-annual calibration is advised for GLP/GMP applications or when used for regulatory submissions.

Can the JH Series be configured for continuous operation at 45 °C and 98 % RH?
Yes—this condition falls within the specified operational envelope. Sustained operation requires proper chamber loading management and ambient room temperature ≤25 °C with ≥15 air changes/hour.

Is third-party IQ/OQ/PQ documentation available?
Yes. JianHu offers vendor-supported qualification packages aligned with ASTM E2500 and EU Annex 15, including template protocols and witnessed execution support.

Does the system meet CE marking requirements?
The JH Series complies with the essential health and safety requirements of the EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. CE declaration is provided with shipment for EU-bound units.

What maintenance tasks are required for optimal long-term performance?
Monthly cleaning of condenser coils and humidifier tank; quarterly verification of door gasket integrity and sensor response time; annual replacement of desiccant in the dehumidification loop (if equipped).