JianHu JH-Series Programmable Temperature and Humidity Environmental Test Chamber

Overview

The JianHu JH-Series Programmable Temperature and Humidity Environmental Test Chamber is an engineered solution for controlled simulation of thermal and hygrothermal stress conditions in laboratory and industrial quality assurance environments. Based on forced-air convection with dual independent PID-controlled heating and refrigeration circuits, the chamber maintains precise, repeatable environmental profiles across its operational range—enabling standardized evaluation of material stability, component reliability, and product performance under defined climatic loads. Its architecture conforms to fundamental requirements of accelerated aging protocols, environmental stress screening (ESS), and qualification testing per international standards including IEC 60068-2-30 (damp heat, cyclic), ASTM D4332 (conditioning of plastics), and MIL-STD-810G Method 507.5 (humidity). Designed for continuous-duty operation in QC labs, R&D centers, and third-party certification facilities, the JH-Series delivers deterministic control over temperature and relative humidity without requiring external water supply or chilled water infrastructure.

Key Features

• Programmable multi-step test profiles with up to 100 segments per cycle, supporting ramp-hold-soak sequences with user-defined rate limits and dwell times.
• Dual-channel high-stability platinum resistance thermometers (PT100) and capacitive humidity sensors calibrated traceably to NIST standards.
• Robust stainless-steel 304 interior chamber with full TIG-welded seams, acid-resistant surface finish, and seamless corner radii for contamination control and cleanability.
• Double-layer insulated observation window with low-emissivity coated glass and internal anti-fog heating element for uninterrupted visual monitoring.
• Integrated safety architecture featuring independent over-temperature/over-humidity cutoffs, door interlock switch, compressor high-pressure protection, and real-time fault logging.
• Front-accessible maintenance layout with modular refrigeration components, quick-release sensor mounts, and tool-free filter access.

Sample Compatibility & Compliance

The JH-Series accommodates a broad spectrum of physical sample types—including printed circuit boards (PCBs), polymer enclosures, automotive electronic modules, optical lenses, pharmaceutical packaging, and composite laminates—within its upright chamber configuration. Internal dimensions are customizable per client specification (standard configurations available upon technical consultation). All control firmware and data handling workflows support audit-ready documentation per FDA 21 CFR Part 11 requirements, including electronic signatures, operator-level access control, and immutable audit trails for parameter changes and alarm events. The system’s thermal and humidity uniformity performance aligns with ISO 17025 clause 5.4.2 for calibration traceability and uncertainty budgeting in accredited laboratories. It is routinely deployed in GLP-compliant validation studies for medical device packaging (ISO 11607), automotive electronics (AEC-Q200), and aerospace hardware (SAE AS9100).

Software & Data Management

The chamber operates via embedded Linux-based controller with intuitive touchscreen HMI (7-inch capacitive display) and optional Ethernet/RS485 connectivity. Standard software includes real-time graphing of temperature/humidity trends, automatic CSV export of time-stamped measurement logs, and configurable alarm notifications (email/SMS via gateway integration). Optional PC-based JianHuTest Suite v4.x provides advanced features: statistical process control (SPC) charting, deviation mapping across chamber volume, automated report generation compliant with ISO/IEC 17025 Annex A.3, and secure cloud synchronization for multi-site fleet management. All data files are timestamped, digitally signed, and stored in non-volatile memory with battery-backed retention—ensuring integrity during power interruption.

Applications

• Environmental stress screening (ESS) of electronic assemblies prior to burn-in or HALT.
• Long-term stability assessment of adhesives, sealants, and elastomeric gaskets under cyclic humidity exposure.
• Validation of shelf-life claims for moisture-sensitive pharmaceuticals and diagnostic reagents.
• Testing of solar panel encapsulants and backsheet materials per IEC 61215 damp heat requirements.
• Corrosion acceleration trials on coated metal substrates using combined thermal-humidity cycling.
• Material compatibility studies for packaging systems exposed to tropical or subtropical distribution climates.

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 36 months under service agreement. Calibration certificates and factory acceptance test (FAT) reports are included with shipment.
Can the chamber be integrated into an existing LIMS or MES platform?
Yes—via Modbus TCP or OPC UA protocol support; API documentation and driver packages are provided for seamless integration with LabWare, Thermo Fisher SampleManager, or Siemens Opcenter.
Is remote monitoring supported without on-site IT infrastructure?
Standard Ethernet port enables direct connection to local network; optional 4G LTE module allows cellular telemetry and alarm push notifications without LAN dependency.
How is traceability maintained for sensor calibration?
Each unit ships with dual-point calibration certificates (at 25°C/50% RH and 40°C/95% RH) issued by JianHu’s ISO/IEC 17025-accredited metrology lab, with full uncertainty budgets and reference standard traceability paths.
Are custom chamber dimensions available for non-standard samples?
Yes—JianHu offers engineering consultation for bespoke internal volume, door orientation, port configurations, and accessory mounting options (e.g., cable feedthroughs, load racks, internal lighting). Lead time and pricing assessed case-by-case.