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, reproducible simulation of ambient environmental conditions in laboratory and industrial quality assurance settings. Designed around a robust air-cooled thermoelectric control architecture, the chamber maintains stable thermal and hygroscopic profiles across its operational envelope—15 to 45 °C and 30–98 % RH—using dual PID-controlled heating and humidification systems coupled with high-efficiency refrigeration and dehumidification circuits. Its core function is to replicate real-world climatic stressors for accelerated aging, stability testing, and environmental qualification of materials, components, and finished products. Unlike generic incubators or storage cabinets, the JH Series meets the foundational requirements for controlled environment testing as referenced in ASTM D4332, ISO 22068, IEC 60068-2-1/2/30, and USP for pharmaceutical packaging validation. The chamber’s structural integrity, uniform airflow distribution, and sensor redundancy ensure compliance with method validation criteria for temperature and humidity mapping per ISO 14644-3 and EU Annex 15.

Key Features

• Upright ergonomic design with reinforced stainless-steel interior and insulated double-wall construction for minimized thermal bridging and energy loss
• Air-cooled refrigeration system eliminating need for external water supply or glycol loops—ideal for cleanroom-adjacent or space-constrained installations
• Dual independent PID controllers for temperature and humidity, each with auto-tuning capability and real-time deviation compensation
• High-resolution capacitive RH sensors (traceable to NIST standards) and Class A PT100 temperature probes mounted at multiple spatial locations
• Programmable test cycles supporting up to 99 segments with ramp/soak logic, event-triggered logging, and user-defined alarm thresholds
• Integrated safety architecture including over-temperature cutoff, high-humidity shutoff, door-open interlock, and power-fail memory retention
• Front-accessible maintenance panels and modular component layout enabling rapid field service without full disassembly

Sample Compatibility & Compliance

The JH Series accommodates a broad range of sample types—including polymer specimens, electronic assemblies, pharmaceutical primary packaging, automotive trim components, and biological reference standards—within its standardized internal volume configurations (custom dimensions available upon request). Chamber interiors are free of volatile organic outgassing sources and conform to ISO 10993-5 cytotoxicity screening prerequisites. All units ship with factory calibration certificates (traceable to national metrology institutes) and support IQ/OQ/PQ documentation packages aligned with FDA 21 CFR Part 11 requirements for electronic records and signatures. Validation-ready features include audit trail logging, user access levels (admin/operator), and configurable data export formats (CSV, PDF, XML) compatible with LIMS integration.

Software & Data Management

The chamber operates via JianHu’s proprietary TouchView™ control interface—a 7-inch resistive touchscreen running embedded Linux with deterministic real-time response. Firmware supports firmware-over-the-air (FOTA) updates and includes built-in data logging at user-selectable intervals (1 s to 60 min), with local storage (≥16 GB) and optional Ethernet/Wi-Fi connectivity for remote monitoring. Exported datasets include timestamped temperature/humidity values, setpoint history, alarm events, and controller status flags. Software tools enable statistical process control (SPC) charting, deviation heatmaps, and automated report generation compliant with ISO/IEC 17025 reporting guidelines. Optional add-ons include Modbus TCP gateway modules for SCADA integration and cloud-based dashboard services with TLS 1.2 encrypted telemetry.

Applications

• Accelerated stability testing of drug products and medical devices per ICH Q1A(R3) and ISO 11607-1
• Environmental stress screening (ESS) of printed circuit boards and semiconductor packaging prior to burn-in
• Material property evaluation—including coefficient of thermal expansion (CTE), moisture absorption kinetics, and dimensional stability per ASTM D5229
• Validation of HVAC performance in cleanrooms and containment suites through chamber-based challenge testing
• Long-term reliability assessment of lithium-ion battery cells under combined thermal-hygric cycling per UL 1642 and UN 38.3
• Biological sample conditioning for microbiological assay preparation and enzyme activity standardization

FAQ

Is the JH Series suitable for GMP-regulated environments?
Yes—the chamber supports full 21 CFR Part 11 compliance when configured with optional audit trail, electronic signature, and role-based access modules.
Can temperature and humidity be controlled independently?
Yes—dual-loop PID architecture enables decoupled control; humidity setpoints remain stable even during active temperature ramping.
What validation documentation is included with shipment?
Each unit ships with Factory Acceptance Test (FAT) report, calibration certificate (NIST-traceable), and IQ/OQ template package.
Are custom internal dimensions or material finishes available?
Yes—JianHu offers bespoke chamber builds including stainless-steel passivation, ESD-safe interiors, and extended temperature/humidity ranges on OEM basis.
Does the system support third-party software integration?
Yes—Modbus TCP, OPC UA, and RESTful API interfaces are available for integration into MES, SCADA, or enterprise QA platforms.