JianHu JH-Series Walk-In Temperature and Humidity Controlled Chamber

Overview

The JianHu JH-Series Walk-In Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for long-duration, high-fidelity simulation of climatic conditions in laboratory, R&D, and production validation settings. Based on the principle of forced-air convection with dual independent PID-controlled refrigeration and humidification subsystems, it maintains precise, traceable, and reproducible thermal and hygroscopic environments across large internal volumes. Unlike benchtop or reach-in chambers, this walk-in platform supports full human access—enabling direct instrument calibration, real-time sample inspection, and integration of auxiliary measurement systems (e.g., in-situ sensors, data loggers, or optical monitoring). Its structural integrity, seamless insulation, and airtight gasketing meet the mechanical and sealing requirements outlined in IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), and IEC 60068-2-30 (damp heat cyclic), making it suitable for compliance-driven applications in pharmaceutical stability testing, automotive component qualification, electronics reliability screening, and materials aging studies.

Key Features

• Walk-in architecture with hinged or sliding personnel-access door (standard 900 mm clear opening), enabling safe entry without disassembly or external scaffolding
• Dual independent control loops: one for temperature (refrigeration + electric heating) and one for humidity (steam generator + dehumidification coil), each with dedicated platinum RTD sensors (Class A, ±0.15 °C)
• Microprocessor-based controller with 7-inch TFT touchscreen interface, supporting multi-segment programmable profiles (up to 99 steps, 99 cycles)
• High-efficiency scroll compressor with variable-speed EC fans and optimized fin-tube evaporator/condenser design for reduced energy consumption and acoustic noise (<65 dB(A) at 1 m)
• Stainless steel interior (SUS304) with radius corners and removable floor grating for easy cleaning and residue-free operation
• Integrated safety architecture: over-temperature/over-humidity cut-off, phase failure detection, refrigerant pressure monitoring, door open alarm, and battery-backed memory retention during power interruption

Sample Compatibility & Compliance

The chamber accommodates heterogeneous load configurations—including stacked pallets, rack-mounted equipment, assembled prototypes, and bulk material batches—without compromising spatial uniformity. Internal volume options range from 2 m³ to 20 m³, with custom dimensions available per client specification. All models are configured to support GLP and GMP workflows: temperature and humidity data are continuously logged with timestamped metadata, and the system generates raw data files compliant with ASTM E2911–22 (Standard Guide for Data Integrity in Environmental Chambers). Validation documentation (IQ/OQ/PQ protocols) is provided upon request, aligned with ISO 17025 clause 5.8 and EU Annex 15. The chamber meets the physical construction and performance verification criteria defined in ISO 16750-4 (road vehicles), MIL-STD-810H Method 507.6 (humidity), and ICH Q5C (biotechnological product stability).

Software & Data Management

JianHuControl™ v4.2 firmware delivers secure, role-based access control (administrator, operator, reviewer) and full electronic record capability. It supports local storage (SD card, USB export) and optional Ethernet/Wi-Fi connectivity for remote monitoring via web browser or dedicated SCADA integration (Modbus TCP, OPC UA). Audit trails capture all user actions—including parameter changes, profile uploads, and alarm acknowledgments—with immutable timestamps and digital signatures. Electronic signatures comply with FDA 21 CFR Part 11 requirements when paired with validated identity authentication (e.g., smart card or biometric login). Data export formats include CSV, PDF reports (with embedded calibration certificates), and XML for LIMS interoperability.

Applications

• Pharmaceutical stability testing per ICH Q1A–Q1E guidelines, including long-term (25 °C/60% RH), accelerated (40 °C/75% RH), and intermediate conditions
• Automotive electronics qualification under ISO 16750-4 and SAE J2380 for thermal cycling and humidity exposure
• Material science research on polymer hygroscopic expansion, composite moisture diffusion kinetics, and corrosion behavior of coated metals
• Calibration laboratories performing humidity sensor intercomparison and reference chamber validation
• Biotechnology cold chain verification and vaccine storage condition mapping
• Electronics manufacturing: PCB moisture sensitivity level (MSL) preconditioning and pre-reflow bake-out per J-STD-033

FAQ

What is the standard temperature and humidity range for the JH-Series chamber?
Standard operational ranges are configurable per application; typical specifications include −40 °C to +85 °C and 10% to 98% RH (non-condensing). Exact limits depend on volume, internal load, and optional upgrades (e.g., LN₂ assist or steam humidification enhancement).
Does the chamber support automated validation and calibration reporting?
Yes—built-in validation tools generate IQ/OQ reports with pass/fail metrics against user-defined tolerances. Optional NIST-traceable calibration services are available with certificate of conformity.
Can the system be integrated into an existing facility BMS or MES?
All JH-Series units include Modbus TCP and optional OPC UA interfaces for seamless integration with building management systems, enterprise resource planning (ERP), or manufacturing execution systems (MES).
Is remote monitoring and alarm notification supported?
Yes—via email/SMS alerts triggered by predefined thresholds (e.g., deviation >±0.5 °C for >5 min), with live dashboard access through secure HTTPS portal.
What regulatory standards does the chamber meet out-of-the-box?
It conforms to mechanical and performance requirements of IEC 60068-2, ISO 16750-4, ASTM D4332, and USP . Full 21 CFR Part 11 compliance requires configuration with validated user authentication and electronic signature modules.