Jianhu JH-THC Series Programmable Temperature and Humidity Environmental Test Chamber

Overview

The Jianhu JH-THC Series Programmable Temperature and Humidity Environmental Test Chamber is engineered for precise, repeatable simulation of dynamic climatic conditions in laboratory and quality assurance environments. Based on the principle of forced-air convection with integrated dual-loop PID control, the chamber maintains tightly regulated temperature and relative humidity profiles across programmable cycles—including ramp-soak-hold sequences and multi-step environmental stress profiles. Designed for benchtop deployment, it supports accelerated reliability testing, material stability evaluation, and compliance-driven validation in industries governed by IEC 60068-2, MIL-STD-810, and ISO 16750-4. Its architecture integrates a stainless-steel insulated chamber, air-circulation system with adjustable vane diffusers, and a corrosion-resistant evaporator coil—ensuring long-term operational integrity under repeated thermal-hygrometric cycling.

Key Features

• Programmable multi-segment climate profiles with up to 99 cycles and 999 steps per cycle, supporting complex thermal-humidity interaction tests (e.g., condensation onset, dew-point tracking, and hygrothermal aging)
• Dual independent PID controllers—one for temperature and one for humidity—enabling decoupled regulation and minimizing cross-interference during rapid transitions
• Air-cooled refrigeration system with environmentally compliant R134a refrigerant, eliminating need for external water cooling infrastructure
• Steam-based humidification system (standard configuration) delivering clean, particle-free vapor; compatible with deionized water supply to prevent scaling and sensor contamination
• Real-time monitoring of chamber internal conditions via high-accuracy PT100 temperature sensors and capacitive RH transducers calibrated traceably to NIST standards
• Benchtop footprint with optional casters and modular rear-panel service access—designed for integration into constrained lab spaces or QC laboratories with limited floor area

Sample Compatibility & Compliance

The JH-THC chamber accommodates a broad spectrum of non-hazardous test specimens—including printed circuit boards (PCBs), polymer films, pharmaceutical packaging, optical lenses, and battery cells—within its customizable interior volume. All wetted components (humidifier tank, steam lines, chamber walls) are constructed from electropolished 304 stainless steel or anodized aluminum to resist oxidation and microbial growth. The system complies with GLP documentation requirements through built-in audit trail functionality (user login, parameter changes, alarm events). It supports validation protocols aligned with ASTM D4332 (conditioning containers), ISO 4892-2 (plastics exposure), and ICH Q1A(R2) (stability testing of pharmaceuticals). Optional IQ/OQ documentation packages are available upon request for GMP-regulated environments.

Software & Data Management

Equipped with Jianhu’s proprietary TH-Link™ control software (Windows-compatible), the chamber enables remote programming, real-time graphing, and automated report generation in PDF/CSV formats. The software implements 21 CFR Part 11-compliant electronic signatures, role-based user permissions (admin/operator/viewer), and immutable data logging with timestamped metadata. All measurement data—including chamber setpoints, actual values, deviation alarms, and system status flags—are stored locally on an embedded industrial SSD with 12-month retention capacity. Data export supports integration with LIMS platforms via OPC UA or Modbus TCP protocols. Firmware updates are delivered via secure HTTPS, with version rollback capability and checksum verification.

Applications

• Accelerated aging of electronic assemblies under combined thermal and moisture stress per JEDEC JESD22-A101
• Stability assessment of active pharmaceutical ingredients (APIs) and blister-packaged drugs under ICH Zone IV climatic conditions
• Material compatibility testing of adhesives, sealants, and conformal coatings exposed to cyclic humidity ingress
• Calibration verification of hygrometers and thermohygrometers in metrology labs
• Pre-conditioning of composite materials prior to mechanical testing (ASTM D5229/D5511)
• Environmental screening of automotive ECUs and infotainment modules per ISO 16750-4

FAQ

What humidification method does the JH-THC Series use, and why is it preferred for precision testing?

It employs a steam-generation humidification system using electrically heated deionized water—eliminating particulate carryover, ensuring uniform RH distribution, and avoiding sample contamination common with ultrasonic or centrifugal methods.
Can the chamber perform rapid temperature transitions below 15°C or above 45°C?

No—the specified operating range is strictly 15–45°C. For extended low-temperature capability (e.g., –40°C), refer to Jianhu’s JH-TC series cold-thermal shock chambers.
Is calibration certification included with shipment?

Yes—a factory-issued calibration certificate (traceable to CNAS-accredited standards) is provided for temperature and humidity sensors at time of delivery.
How is data integrity ensured during power interruption?

The controller retains all programmed profiles and logged data in non-volatile memory; system resumes operation at pre-interruption state without data loss.
Does the chamber support third-party protocol integration for Industry 4.0 environments?

Yes—Modbus TCP and OPC UA interfaces are standard; custom API development kits are available under NDA for MES/SCADA integration.