Jiubin JB-220 Temperature and Humidity Controlled Environmental Test Chamber

Overview

The Jiubin JB-220 Temperature and Humidity Controlled Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of materials and finished products across industrial, aerospace, automotive, electronics, and research applications. It operates on the principle of precise thermodynamic conditioning—simultaneously regulating air temperature and relative humidity within a sealed, insulated chamber using closed-loop feedback control. The system maintains stable thermal-hygrometric profiles through coordinated operation of a high-efficiency air-cooled refrigeration circuit, resistive heating elements, and a steam-based humidification subsystem. Designed for reproducible, long-duration exposure cycles, it supports both steady-state and dynamic profile execution—including ramp-hold-soak sequences—to evaluate product reliability under defined climatic stressors per international test standards.

Key Features

• Programmable LCD touch controller with bilingual (English/Chinese) interface, supporting up to 99 segments and 999 cycles in multi-step mode
• Robust chamber construction: inner liner of mirror-finish SUS304 stainless steel; outer shell of corrosion-resistant SUS304 stainless steel
• Optimized airflow design with centrifugal circulation fan ensures uniform temperature and humidity distribution (±0.5°C / ±3% RH typical)
• Dual independent safety interlocks: hardware-based thermal cutoffs complement software-driven fault diagnostics
• Standard 50 mm diameter test port (left-side mounted) enables real-time signal monitoring or external power feed-through during operation
• Integrated lighting, dual sample shelves, and observation window with anti-fog coating facilitate visual inspection without chamber interruption
• Energy-efficient cooling architecture utilizing R404A or R507 refrigerant (Ozone Depletion Potential = 0, Global Warming Potential compliant with EU F-Gas Regulation)

Sample Compatibility & Compliance

The JB-220 accommodates a broad range of sample geometries and mass loads—up to 100 L internal volume—with configurable shelf configurations and optional load-bearing trays. Its validated performance meets essential requirements for qualification testing per GB/T 10592–1989 (Chinese national standard for climate chambers), ANSI/EIA-364-105–1999 (environmental stress screening of electronic components), and aligns with foundational principles of IEC 60068-2 series (Environmental testing – Part 2: Tests). While not certified to ISO/IEC 17025, the chamber’s documented calibration traceability path supports GLP-compliant test reporting when operated with NIST-traceable reference sensors and maintained per manufacturer-recommended service intervals.

Software & Data Management

The TEM M-Series and OYO P-Series controllers provide embedded data logging with timestamped temperature/humidity records at user-selectable intervals (1 s to 60 min resolution). Export is supported via USB flash drive in CSV format for post-processing in Excel or statistical analysis platforms (e.g., JMP, Minitab). Optional RS-485 Modbus RTU or Ethernet TCP/IP interfaces enable integration into centralized lab management systems (LIMS) or SCADA networks. Audit trail functionality—including operator ID, parameter changes, and alarm events—is retained in non-volatile memory for compliance with internal QA procedures and FDA 21 CFR Part 11 readiness (when paired with electronic signature-capable host software).

Applications

• Accelerated aging of polymer composites, adhesives, and encapsulants under cyclic thermal-hygrometric stress
• Storage stability assessment of pharmaceutical packaging per ICH Q1A(R2) guidelines
• Functional validation of automotive ECUs and infotainment modules across extended temperature-humidity envelopes
• Qualification testing of printed circuit boards (PCBs) and solder joints per IPC-9701A
• Material compatibility studies for coatings, paints, and sealants exposed to tropical or desert climatic profiles
• Pre-conditioning of sensors and optical components prior to metrological calibration

FAQ

What is the maximum allowable sample mass for thermal stability during rapid temperature transitions?
The chamber’s thermal inertia and airflow capacity support up to 15 kg of inert mass without exceeding ±1.5°C deviation from setpoint during standard ramp rates. For higher-mass or high-thermal-capacity samples, customized ramp profiling is recommended.
Can the JB-220 be integrated into an automated test sequence with external PLC control?
Yes—via optional digital I/O expansion module (relay outputs for alarm states, analog inputs for external sensor feedback) or Modbus RTU protocol over RS-485.
Is humidification possible below 0°C?
No. Steam-based humidification is disabled below +5°C to prevent condensate freezing in the distribution manifold. Sub-zero humidity conditioning is achieved via dew point control only.
What maintenance intervals are recommended for optimal long-term repeatability?
Compressor oil and refrigerant levels: annually; HEPA filter (if installed): quarterly; chamber seal integrity and sensor calibration: semi-annually.
Does the system include validation documentation (IQ/OQ/PQ protocols)?
Standard delivery includes factory-assembled IQ checklist and OQ report against nominal operating points. PQ templates and execution services are available as optional consultancy packages.