Jianhu JTH-50P-C Temperature and Humidity Controlled Environmental Test Chamber

Overview

The Jianhu JTH-50P-C is a programmable temperature and humidity controlled environmental test chamber engineered for precision reliability testing of electronic components, automotive parts, rubber compounds, plastics, metallic alloys, and other industrial materials under rigorously defined climatic conditions. Based on the principle of forced-air convection with dual independent control loops—one for refrigeration/dehumidification and another for heating/humidification—the chamber delivers high reproducibility in simulating real-world thermal and hygrothermal stress profiles. Its design adheres to fundamental thermodynamic requirements for uniform chamber conditioning, including laminar airflow management, minimized thermal inertia, and low-hysteresis PID-based feedback regulation. The system supports both steady-state and dynamic cycling protocols, enabling accelerated life testing, HALT/HASS pre-screening, and qualification per international product validation standards.

Key Features

• High-precision programmable controller with 7-inch color LCD touchscreen interface, supporting up to 999 segments and 99 cycles per program
• Dual-loop climate control architecture: independent heating, cooling, humidification, and dehumidification systems ensure minimal cross-interference and extended service life
• Imported French “Iron Warrior” hermetic compressor (Manroland/Embraco equivalent), paired with eco-friendly refrigerants R134a, R404a, and R23 across configurations
• Internal chamber constructed from mirror-finish SUS304 stainless steel; outer enclosure features powder-coated cold-rolled steel with CNC-formed structural integrity
• Multi-wing centrifugal blower with side-inlet/side-return air ducting ensures uniform temperature and humidity distribution (±1.5 °C / ±2.5 %RH spatial deviation across working volume)
• Double-layer insulated walls using high-density glass fiber + rigid polyurethane foam (PU) with thermal conductivity ≤0.022 W/m·K
• Electrothermal anti-fog coated observation window with integrated LED lighting for uninterrupted visual monitoring during extended tests
• Comprehensive safety architecture: over-temperature cutoff, compressor high-pressure protection, water shortage alarm, phase failure detection, and automatic power recovery with cycle memory
• Standard RS-232 serial interface for remote monitoring and data logging; optional analog output (4–20 mA) and Ethernet expansion modules available

Sample Compatibility & Compliance

The JTH-50P-C accommodates samples up to 35 cm wide × 32 cm deep × 45 cm tall—ideal for PCB assemblies, small enclosures, polymer specimens, sensor modules, and handheld devices. Its internal geometry and airflow dynamics comply with IEC 60068-3-5 (environmental testing guidance), ISO 16750-4 (road vehicles—electrical loads), and ASTM D4332 (conditioning containers prior to testing). All control algorithms and calibration procedures are traceable to national metrological standards (CNAS-accredited reference labs). The chamber meets electromagnetic compatibility (EMC) requirements per EN 61326-1 and safety standards per IEC 61010-1. Optional validation packages support IQ/OQ/PQ documentation for GLP and GMP-regulated environments.

Software & Data Management

The embedded controller firmware supports real-time parameter logging at user-defined intervals (1s–3600s), with onboard storage capacity for ≥30 days of continuous 10-point/sec data. Export formats include CSV and Excel-compatible .txt files via USB port or RS-232. Optional Jianhu DataLink™ software enables multi-chamber synchronization, statistical process control (SPC) charting, deviation alerting, and audit-trail generation compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, operator-level access control, and immutable log history. Calibration certificates include uncertainty budgets aligned with ISO/IEC 17025 guidelines.

Applications

• Environmental stress screening (ESS) of printed circuit boards and microelectronic packaging
• Thermal cycling validation of automotive ECUs per ISO 16750-4 and SAE J2223
• Moisture absorption/desorption kinetics studies for polymer composites and adhesives
• Storage stability assessment of medical device housings and diagnostic consumables
• Pre-conditioning of test specimens prior to mechanical, electrical, or optical characterization
• Accelerated corrosion testing of coated metals under cyclic damp heat (per ASTM B117 and ISO 9227)
• Qualification of aerospace-grade elastomers under combined low-temperature/humidity extremes

FAQ

What is the difference between ‘P’ and ‘S’ model variants?
The ‘P’ designation indicates a fully programmable version with touch-panel controller, 0.01 °C resolution, and multi-segment cycling capability. The ‘S’ variant uses a microprocessor-based digital display with fixed-setpoint operation and ±1 °C temperature accuracy.
Does the chamber support custom test profiles required by MIL-STD-810?
Yes—through optional firmware upgrade and external profile import via USB, users can implement Method 502.7 (temperature), Method 507.6 (humidity), and Method 506.6 (combined environments) test sequences.
Is third-party calibration certification available?
Calibration reports issued by CNAS-accredited laboratories are available upon request, covering temperature uniformity, humidity accuracy, ramp rate verification, and controller linearity across the full operating range.
Can the unit be integrated into a centralized lab monitoring network?
Standard RS-232 allows Modbus RTU communication; Ethernet and Profibus-DP gateways are offered as factory-installed options for SCADA or LIMS integration.
What maintenance intervals are recommended for long-term operational reliability?
Compressor oil and refrigerant levels should be verified annually; condensate drain lines require quarterly cleaning; sensor recalibration is advised every 12 months or after 2000 operating hours—whichever occurs first.