APKJ AP-KF-4.5m Walk-in Environmental Test Chamber
| Brand | APKJ |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | AP-KF-4.5m |
| Pricing | Upon Request |
Overview
The APKJ AP-KF-4.5m Walk-in Environmental Test Chamber is an industrial-grade, large-volume environmental simulation system engineered for precision thermal and humidity conditioning of bulky components, subassemblies, and finished products. Designed according to fundamental principles of psychrometric control and forced-convection thermodynamics, the chamber employs balanced temperature and humidity regulation—achieving dynamic equilibrium between heating, humidification, refrigeration, and air circulation subsystems. Its architecture supports rigorous compliance with international environmental testing standards for reliability validation in automotive, aerospace, electronics, and defense sectors. With a nominal internal volume of 4.5 m³ (customizable beyond standard configurations), it accommodates full-size automotive ECUs, server racks, medical imaging systems, and avionics enclosures—enabling real-world stress profiling under controlled climatic conditions.
Key Features
- Forced-air circulation via multi-blade centrifugal blower ensures uniform temperature and humidity distribution across the entire test space—verified per IEC 60068-3-5 and ASTM E145 Annex A for spatial uniformity (±2°C, ±5% RH at steady state).
- Dual-stage hermetic cascade refrigeration system using either Tecumseh (France) or Bitzer (Germany) compressors enables stable operation from –70°C to +85°C; optional high-temperature configuration extends upper limit to +250°C.
- Humidity range of 30–95% RH achieved via stainless-steel sheathed immersion heater humidifier with PID-controlled water level monitoring and dry-run prevention.
- Insulated chamber walls constructed from polyurethane foam sandwich panels (100 mm thick), with exterior electrostatically sprayed galvanized steel and interior 304 stainless steel—providing thermal resistance ≥0.85 m²·K/W.
- Integrated Japanese-made color touchscreen controller featuring real-time trend logging, programmable ramp-soak profiles, alarm history with timestamped event codes, and password-protected parameter access.
- Comprehensive safety architecture includes over-temperature cutoff, phase-sequence protection, compressor high-pressure/overload/overcurrent safeguards, fan motor thermal overload relay, water-level interlock for humidifier, and leakage current detection.
Sample Compatibility & Compliance
The AP-KF-4.5m accommodates test specimens up to 260 cm (W) × 450 cm (D) × 210 cm (H), with configurable door openings, observation windows with heated anti-fog coating, and optional cable/port penetrations (Φ25–Φ100 mm). It meets structural and performance requirements specified in GB/T 2423.1–2423.4 (2008), GB 10586–10592 (2008), GJB 150.3–150.10 (1986), and ISO 16750-4 for automotive environmental stress screening. Optional low-humidity configuration achieves ≤10% RH at 5°C via auxiliary desiccant dehumidification—supporting evaluation of moisture-sensitive electronics per J-STD-020 and IPC-9592. All electrical interfaces comply with CE marking directives (EMC 2014/30/EU, LVD 2014/35/EU).
Software & Data Management
The embedded controller supports RS-232C serial communication for local PC-based supervision using APKJ’s proprietary WinTest software—enabling remote start/stop, real-time data streaming, profile editing, and automated report generation (PDF/CSV). Audit trail functionality records all operator actions, setpoint changes, and alarm events with user ID and timestamp—aligned with GLP/GMP documentation expectations. Optional Ethernet interface enables integration into centralized lab management systems (LIMS) and supports Modbus TCP for SCADA interoperability. Temperature and humidity data can be continuously logged to internal flash memory (≥30 days at 1-min intervals) and exported for traceability in FDA 21 CFR Part 11–compliant environments when paired with validated electronic signature modules.
Applications
- Accelerated life testing of automotive infotainment systems, battery packs, and ADAS sensors under combined thermal cycling and humidity exposure.
- Environmental stress screening (ESS) of military-grade communication equipment per MIL-STD-810G Method 502.6 (cold) and Method 507.5 (humidity).
- Validation of packaging integrity for pharmaceutical cold-chain logistics under ICH Q5C stability protocols.
- Thermal aging studies of polymer composites and adhesive bonds used in aerospace structural assemblies.
- Calibration and verification of field-deployed environmental sensors against NIST-traceable reference conditions.
FAQ
What is the standard temperature and humidity uniformity specification for this chamber?
Per internal validation per IEC 60068-3-5, temperature uniformity is ±2.0°C and humidity uniformity is ±5.0% RH across the working volume at steady-state conditions.
Can the chamber be configured for sub-zero operation below –40°C?
Yes—standard models support –60°C and –70°C minimum temperatures using dual-stage cascade refrigeration; cryogenic variants require additional insulation and compressor derating analysis.
Is remote monitoring supported without third-party software?
Yes—the built-in controller provides web-enabled HTTP status pages and SNMP trap support for basic network visibility; full remote control requires APKJ WinTest or custom API integration.
Are calibration certificates included with shipment?
Factory-assembled chambers ship with a Certificate of Conformance and as-built drawings; NIST-traceable calibration reports are available as an optional service prior to delivery.
What utility connections are required for installation?
Water-cooled operation requires chilled water supply at 0.1–0.3 MPa pressure and ≤25°C inlet temperature; electrical supply must match local voltage/frequency (e.g., 380V/50Hz three-phase) with dedicated grounding per IEC 60364-5-54.
