Jianhu JH-THC Series Environmental Simulation Chamber – Temperature & Humidity Controlled Test Chamber with Dual-Airflow Circulation System

Overview

The Jianhu JH-THC Series Environmental Simulation Chamber is an engineered temperature and humidity controlled test chamber designed for rigorous physical property evaluation under reproducible climatic conditions. Based on the principle of forced-air dual-circuit circulation, the system maintains precise thermal and hygric stability across the working volume—enabling reliable simulation of real-world environmental stressors such as diurnal temperature shifts, tropical humidity, and transitional seasonal climates. Unlike single-airflow chambers, the dual-path design ensures uniform air distribution, minimizes thermal stratification, and reduces energy consumption by up to 30% without compromising control fidelity. This architecture supports ISO 16750-4 (road vehicles), ASTM D4332 (conditioning of plastics), and IEC 60068-2-30 (damp heat cyclic testing) compliance—making it suitable for qualification testing in automotive, electronics, aerospace, and building materials sectors.

Key Features

• Dual-airflow circulation system with independent temperature and humidity airflow paths—enhancing spatial uniformity and reducing cross-contamination between thermal and moisture control loops
• Air-cooled refrigeration module with optimized heat exchanger geometry for stable operation within 15–45 °C and 30–98 % RH ranges
• High-precision PID-controlled humidification and dehumidification subsystems, calibrated to meet ±3 % RH fluctuation tolerance per IEC 60068-3-5
• Programmable ramp-and-soak profiles supporting multi-step temperature/humidity cycles, including dynamic transitions at rates from 1.0 to 3.0 °C/min
• Customizable internal chamber dimensions (standard and bespoke configurations available) with stainless-steel 304 interior, reinforced insulation, and double-glazed observation window
• Integrated safety interlocks—including over-temperature cutoff, high-humidity shutoff, and door-open alarm—to ensure operational integrity during unattended runs

Sample Compatibility & Compliance

The JH-THC chamber accommodates a broad spectrum of test specimens—from automotive interior trim panels and polymer-based gaskets to printed circuit boards (PCBs), architectural coatings, and pharmaceutical packaging. Its uniformity performance (≤ ±2 °C temperature deviation, ±3 % RH deviation) satisfies the spatial homogeneity requirements defined in ISO 17025-accredited laboratories for calibration traceability. The chamber meets key regulatory frameworks including: ASTM D2247 (testing paint films under condensing humidity), USP (environmental conditioning of drug product containers), and GB/T 2423.3 (Chinese national standard equivalent to IEC 60068-2-78). Optional integration with external UV irradiation or salt spray modules enables compound stress testing aligned with ISO 4892-2 and ISO 9227 protocols.

Software & Data Management

Equipped with Jianhu’s proprietary TH-Control v4.2 software, the chamber supports full-cycle logging of temperature, relative humidity, setpoint tracking, and alarm history with timestamped CSV export. Data acquisition occurs at 1-second intervals and is stored locally on an embedded industrial SSD with 32 GB capacity. The system includes audit trail functionality compliant with FDA 21 CFR Part 11 requirements—including user authentication, electronic signatures, and immutable record retention. Remote monitoring via Ethernet or optional Wi-Fi allows real-time access through secure HTTPS interface; integration with LIMS or MES platforms is supported via Modbus TCP and OPC UA protocols. All firmware updates are digitally signed and verified prior to installation to maintain GLP/GMP validation integrity.

Applications

• Automotive Component Validation: Simulating cabin climate extremes (-20 °C to +80 °C with humidity cycling) to assess dimensional stability, adhesive bond strength, and VOC emission behavior of dashboards, seat foams, and HVAC ducting
• Electronics Reliability Testing: Conducting 72+ hour damp-heat exposure at 65 °C / 95 % RH to evaluate PCB delamination risk, solder joint integrity, and dielectric breakdown thresholds per IPC-TM-650 2.6.25
• Building Material Durability: Accelerated aging of exterior cladding systems, sealants, and elastomeric coatings under cyclic wet-dry and thermal load conditions per ASTM C1549 and EN 15824
• Pharmaceutical Packaging Qualification: Stability chamber mapping and long-term storage condition simulation (e.g., 25 °C / 60 % RH, 30 °C / 65 % RH) in accordance with ICH Q1A(R2) guidelines
• Academic & Government Research: Supporting material science studies on polymer hydrolysis kinetics, corrosion mechanisms in coated metals, and biodegradation rates of eco-materials under controlled hygrothermal stress

FAQ

What standards does the JH-THC chamber comply with?
It conforms to ISO 16750-4, IEC 60068-2-30, ASTM D4332, GB/T 2423.3, and supports validation against USP , ICH Q1A(R2), and IPC-TM-650 test methods.

Can the chamber be validated for GMP environments?
Yes—equipped with IQ/OQ documentation templates, 21 CFR Part 11-compliant software, and calibration traceability to NIST-certified references, it supports full GMP qualification workflows.

Is customization available for non-standard chamber dimensions?
Absolutely—the internal volume, door configuration, sensor port layout, and mounting rail options can be tailored to client specifications during order engineering.

How is energy efficiency achieved in the dual-airflow design?
By decoupling temperature and humidity airflow paths, the system avoids redundant reheating/dehumidification cycles, reducing compressor duty cycle and fan power draw by up to 30% versus conventional single-loop chambers.

Does the chamber support remote diagnostics and predictive maintenance?
Yes—embedded IoT telemetry monitors refrigerant pressure, heater current draw, and humidity sensor drift trends; alerts are issued via email or SNMP trap when parameters exceed statistical control limits.