Apkji AP-GD-800B High-Temperature & High-Humidity Environmental Test Chamber

Overview

The Apkji AP-GD-800B High-Temperature & High-Humidity Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of materials, electronic components, aerospace subsystems, and precision instrumentation under controlled thermal and hygrothermal conditions. Designed in accordance with international reliability test standards—including IEC 60068-2 series, MIL-STD-810H, and relevant GB/T 2423 clauses—the chamber employs a dual-loop temperature-humidity control architecture based on PID auto-tuning algorithms and high-stability PT100 platinum resistance sensors. Its operational principle relies on forced-air convection using a multi-wing centrifugal blower system, ensuring uniform thermal distribution and rapid transient response during ramp-and-soak cycles. The chamber’s structural integrity supports long-term exposure testing at extremes of −40°C to +150°C and 20–98% RH, making it suitable for qualification testing per JEDEC JESD22-A104 (Temperature Cycling), JESD22-A108 (Bias Humidity Testing), and IPC-9701 (Performance Qualification of Printed Board Assemblies Under Environmental Stress).

Key Features

• Robust double-wall construction: Inner chamber lined with SUS304 mirror-finish stainless steel; outer shell fabricated from A3 cold-rolled steel with electrostatic powder coating for corrosion resistance and aesthetic durability.
• Optimized airflow design: USA-sourced multi-wing centrifugal fan ensures laminar, low-turbulence circulation—achieving temperature uniformity ≤±2°C and humidity uniformity within ±3% RH across the full working volume (W800 × D1000 × H1000 mm).
• Independent heating, humidification, and dehumidification systems: Electric nickel-chromium heaters operate in parallel with a dedicated steam boiler humidifier; dehumidification utilizes surface condensation on a segregated evaporator coil—minimizing cross-system interference and extending service life.
• Enhanced operator safety and accessibility: Dual-layer high-tensile silicone gasket seals prevent leakage during extreme condition cycling; front-access door-mounted wiring ports (Ø30/50/100 mm, customizable) enable seamless integration with external data acquisition or power supply units.
• Intelligent monitoring interface: TEMI880 color touchscreen controller with real-time graphing, programmable profiles (up to 99 segments), alarm logging, and RS-232/RS-485 communication for SCADA-level integration and remote supervision.
• Integrated safety architecture: Comprehensive protection includes overtemperature cutoff, compressor high-pressure shutdown, motor overcurrent detection, water-level sensor interlock, phase failure monitoring, and ground fault circuit interruption.

Sample Compatibility & Compliance

The AP-GD-800B accommodates diverse sample configurations—from PCB assemblies and semiconductor packages to molded polymers, adhesives, and sealed optoelectronic modules—without compromising environmental fidelity. Its large observation window features embedded heating elements to prevent frosting during low-temperature/high-humidity operation, enabling continuous visual inspection. All internal surfaces are non-outgassing and chemically inert, eliminating contamination risks for sensitive optical or vacuum-compatible samples. The chamber meets traceability requirements for GLP and GMP environments through optional audit-ready data logging (e.g., Fuji Electric RH-800 recorder with 21 CFR Part 11-compliant user authentication and electronic signature support). It is certified to GB/T 2423.1 (cold testing), GB/T 2423.3 (damp heat, steady state), and aligns with ISO 16750-4 (road vehicles—environmental conditions) for automotive component validation.

Software & Data Management

The standard TEMI880 controller supports profile-based test sequencing, real-time deviation alerts, and event-triggered data capture. Optional PC software (Apkji TestLink Pro) enables automated report generation in PDF/CSV formats, trend analysis of chamber stability metrics (e.g., 3σ temperature drift over 24 h), and synchronized timestamping across multiple chambers in networked labs. All logged data include metadata such as operator ID, calibration certificate reference, sensor serial numbers, and ambient lab conditions—supporting ISO/IEC 17025 documentation workflows. Firmware updates are delivered via USB or Ethernet, with version history retained in non-volatile memory for audit trail compliance.

Applications

• Reliability screening of consumer electronics: Thermal shock endurance of Li-ion battery packs, solder joint integrity assessment under cyclic humidity loading.
• Aerospace component qualification: Moisture ingress evaluation of composite radomes, outgassing behavior of conformal coatings at elevated temperatures.
• Material science research: Hygrothermal aging kinetics of epoxy resins, dimensional stability testing of carbon-fiber-reinforced polymers (CFRP) under combined thermal-mechanical stress.
• Pharmaceutical packaging validation: Barrier property verification of blister foil laminates under accelerated climatic conditions per ICH Q1A(R2).
• Automotive ECU stress testing: Functional performance mapping of engine control units across extended temperature-humidity envelopes defined in SAE J2223.

FAQ

What is the maximum allowable load mass inside the working chamber without affecting temperature/humidity uniformity?

For optimal performance, the total sample mass should not exceed 25% of the chamber’s internal volume (i.e., ≤200 kg for the AP-GD-800B), assuming adequate spacing for airflow clearance.

Can the chamber be integrated into a centralized laboratory monitoring system?

Yes—standard RS-485 Modbus RTU protocol allows direct integration with LabVantage, Siemens Desigo, or custom BMS platforms. Optional OPC UA gateway firmware is available upon request.

Is third-party calibration certification included with delivery?

A factory-issued calibration report (traceable to NIM, China) is provided; UKAS or DAkkS-accredited field calibration services can be arranged separately.

What maintenance intervals are recommended for long-term operational reliability?

Monthly inspection of water reservoir cleanliness and gasket integrity; quarterly verification of sensor accuracy and refrigerant charge; annual preventive maintenance including blower bearing lubrication and controller firmware validation.

Does the chamber support unattended weekend operation with power-loss recovery?

Yes—the TEMI880 controller retains all active profiles and setpoints in non-volatile memory and resumes the exact test sequence upon power restoration, including elapsed time tracking and alarm state preservation.