Jiubin BJ-220 Programmable Temperature and Humidity Environmental Test Chamber

Overview

The Jiubin BJ-220 Programmable Temperature and Humidity Environmental Test Chamber is an engineered precision system designed for controlled simulation of dynamic thermal and hygrometric conditions in laboratory and industrial quality assurance environments. Based on forced-air convection with dual independent control loops—separate refrigeration, heating, and humidification subsystems—the chamber maintains stable, repeatable profiles across wide operational ranges. Its architecture follows ISO/IEC 17025-aligned design principles for environmental testing equipment, supporting deterministic stress testing of materials and finished products under defined climatic sequences. The unit complies with key international test standards including GB/T 10592–1989 (Chinese national standard for temperature/humidity chamber performance) and ANSI/EIA-364-105–1999 (environmental stress screening for electronic components), making it suitable for validation protocols in electronics, automotive, aerospace, and pharmaceutical packaging development.

Key Features

• Programmable LCD controller with bilingual (English/Chinese) interface, supporting up to 999 segments and 99 cycles for complex ramp-soak-hold profiles
• Double-wall construction: outer casing of brushed SUS304 stainless steel; inner chamber of mirror-finish SUS304 for corrosion resistance and cleanability
• Refrigeration system featuring hermetically sealed, eco-friendly R404A or R507 compressors (OEM-sourced from Europe or North America), with cascade configuration for low-temperature variants (−70 °C models)
• Heating via stainless-steel sheathed tubular heaters; humidification via stainless-steel steam generator with PID-controlled water level management
• Integrated safety architecture: compressor overheat/overpressure protection, heater dry-run prevention, chamber overtemperature cutoff, low-water alarm, and phase failure detection
• Standard 50 mm diameter test port on left side wall (with silicone gasket seal), enabling real-time monitoring of internal DUT parameters without compromising chamber integrity
• Optimized airflow design with adjustable rear-mounted centrifugal blower ensures uniform temperature and humidity distribution per IEC 60068-3-5 requirements

Sample Compatibility & Compliance

The BJ-220 accommodates a broad range of sample geometries—from PCB assemblies and polymer films to automotive ECUs and medical device enclosures—within its configurable internal volume (400 × 500 × 400 mm to 1000 × 1000 × 1000 mm). All structural materials meet RoHS Directive 2011/65/EU restrictions on hazardous substances. The chamber’s performance verification protocol aligns with ASTM E145–22 (Standard Specification for Gravity-Convection and Forced-Ventilation Ovens) and ISO 16750-4:2010 (road vehicles—environmental conditions and testing for electrical and electronic equipment: climate loads). It supports GLP-compliant operation when paired with validated data logging systems and meets the physical infrastructure prerequisites for FDA 21 CFR Part 11 audit readiness (e.g., user-access controls, electronic signature support via optional software modules).

Software & Data Management

Equipped with either Korean M-series or Japanese P-series controllers (OEM-specified), the BJ-220 provides local data logging (up to 30 days at 1-minute intervals) and RS-485/RS-232 communication for integration into centralized lab management platforms. Optional Ethernet or USB interfaces enable connection to third-party SCADA or LIMS environments. Calibration traceability is maintained through NIST-traceable thermistor and capacitive RH sensor inputs, with annual recalibration intervals defined per ISO/IEC 17025 Clause 6.5. All profile execution logs—including setpoint deviations, alarm events, and cycle completion timestamps—are exportable as CSV files for regulatory submission or internal QA review.

Applications

• Accelerated aging studies of polymer-based packaging under cyclic humidity exposure (e.g., ISO 11607-1:2019 validation)
• Temperature-humidity bias testing of lithium-ion battery cells per UL 1642 and UN 38.3 Section 4.4
• Environmental stress screening (ESS) of avionics hardware per MIL-STD-810H Method 507.6
• Stability testing of coated optical lenses and adhesive bonds under high-humidity soak conditions
• Pre-conditioning of calibration standards prior to metrological evaluation in accredited labs
• Validation of HVAC filter media performance under controlled moisture loading scenarios

FAQ

What temperature and humidity ranges does the BJ-220 support?
The standard configuration covers −70 °C to 150 °C and 20–98 %RH; specific sub-models (e.g., BJ-220T/F/S) denote distinct low-temperature capabilities.
Is the chamber suitable for continuous 24/7 operation in production QA labs?
Yes—designed for Class II industrial duty cycle per IEC 60034-1, with redundant safety interlocks and thermal management optimized for sustained load stability.
Can the controller store multiple test programs independently?
Yes—the onboard memory retains up to 100 programmable profiles, each with customizable ramp rates, dwell durations, and loop nesting depth.
Does the system include validation documentation for IQ/OQ/PQ protocols?
Factory-supplied Installation Qualification (IQ) checklists and Operational Qualification (OQ) test templates are provided; Performance Qualification (PQ) must be executed onsite using certified reference standards.
Are spare parts and technical support available outside mainland China?
Jiubin maintains authorized service partners in Southeast Asia, the Middle East, and Eastern Europe; controller firmware updates and calibration kits are distributed globally via regional distributors.