Jiubin JB-220B Programmable Temperature & Humidity Environmental Test Chamber

Overview

The Jiubin JB-220B Programmable Temperature & Humidity Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of electronic components, automotive parts, industrial materials, and consumer appliances under controlled thermal and hygrothermal conditions. Based on forced-air convection with dual independent refrigeration and steam-based humidification systems, the chamber delivers precise, repeatable exposure profiles across wide operational envelopes. It operates according to fundamental principles of thermodynamic equilibrium and psychrometric control—utilizing PID-regulated heating elements, cascade refrigeration circuits (for sub-zero capability), and ultrasonic or electric-steam humidifiers to maintain stable setpoints. Designed for laboratory-grade reliability and long-term stability, the JB-220B supports standardized test protocols defined in IEC 60068-2, MIL-STD-810, GB/T 2423, and ISO 16750-4, making it suitable for pre-compliance screening and in-house reliability validation prior to formal certification.

Key Features

• Programmable multi-segment test cycles with up to 999 steps per profile, supporting ramp-hold-soak sequences and cyclic temperature/humidity transitions
• Dual independent control loops: one for temperature (using PT100 sensors and high-resolution 0.1 °C resolution display), another for relative humidity (with capacitive RH sensor and dew-point referenced calibration)
• Robust stainless-steel inner chamber with seamless welding and anti-condensation insulation; outer casing constructed from powder-coated cold-rolled steel
• Intelligent safety architecture including over-temperature cut-off, compressor high-pressure protection, water shortage alarm, and door-open interlock
• Standard RS485 interface with Modbus RTU protocol for integration into centralized lab monitoring systems or SCADA environments
• Optional Ethernet or USB data logging module enabling time-stamped parameter recording at user-defined intervals (1 s to 60 min)

Sample Compatibility & Compliance

The JB-220B accommodates a broad range of sample types—including PCB assemblies, battery modules, polymer housings, optical sensors, and sealed enclosures—within its configurable internal volumes (standard 40×50×50 cm or 50×60×75 cm; custom dimensions available upon request). Its chamber design minimizes thermal gradients and airflow turbulence to ensure uniform exposure across test specimens. The system complies with essential requirements of ISO/IEC 17025 for test equipment qualification and supports GLP documentation workflows. While not certified as a Class I medical device tester, it meets functional criteria referenced in ASTM E145 (Standard Specification for Gravity-Convection and Forced-Ventilation Ovens) and IEC 60068-3-5 (Environmental testing — Part 3-5: Supporting documentation and guidance — Confirmation of the performance of temperature chambers). Optional IQ/OQ documentation packages are available for GMP-regulated environments requiring audit-ready validation records.

Software & Data Management

The chamber is operated via a 7-inch color touchscreen HMI running embedded Linux firmware, offering intuitive navigation through test setup, real-time trend visualization, and historical data review. All operational parameters—including actual vs. setpoint traces, alarm logs, and cycle completion status—are stored locally on internal flash memory (≥1 year retention at 1-min sampling). Export is supported via USB stick in CSV format for post-processing in Excel or statistical analysis platforms (e.g., JMP, Minitab). For enterprise deployment, optional PC-based software provides remote monitoring, multi-chamber fleet management, automated report generation (PDF/Excel), and role-based user access control aligned with FDA 21 CFR Part 11 requirements—including electronic signatures, audit trails, and data integrity safeguards.

Applications

• Temperature cycling and damp heat testing per IEC 60068-2-14 and JEDEC JESD22-A104
• Storage and operational life testing of lithium-ion batteries under combined thermal-humidity stress
• Validation of conformal coating adhesion and encapsulant integrity on printed circuit boards
• Material aging studies for elastomers, adhesives, and composite laminates exposed to humid tropical conditions
• Functional verification of automotive ECUs subjected to thermal shock and condensation cycles (ISO 16750-4)
• Pre-screening of IoT sensor modules for environmental robustness prior to field deployment

FAQ

What is the standard warranty period for the JB-220B chamber?

The unit carries a 24-month limited warranty covering parts and labor for defects in materials and workmanship under normal use.
Can the chamber be calibrated traceably to national standards?

Yes—third-party calibration certificates (NIST-traceable or CNAS-accredited) are available upon request, including as-found/as-left data for temperature and humidity sensors.
Is remote operation possible without installing proprietary software?

Basic monitoring and manual override are accessible via web browser using the built-in HTTP server; full programmability requires the optional PC software suite.
Does the system support rapid temperature transition testing (e.g., thermal shock)?

While optimized for steady-state and programmed ramp profiles, the JB-220B achieves typical ramp rates of 2–3 °C/min (heat) and 0.7–1 °C/min (cool); dedicated thermal shock configurations require dual-chamber designs not covered by this model.
Are replacement consumables such as humidifier tanks or filters available separately?

Yes—standardized humidifier water tanks, stainless-steel drain trays, and HEPA-grade air intake filters are stocked and supplied with part numbers for reorder.