Apkji AP-HX Walk-in Environmental Test Chamber
| Brand | Apkji |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | AP-HX |
| Temperature Range | −40 °C to +120 °C |
| Humidity Range | 35–95 %RH |
| Temperature Uniformity | ≤ ±2 °C |
| Temperature Stability | ≤ ±0.5 °C |
| Humidity Accuracy | +2 / −3 %RH |
| Power Supply | 3-phase 380 V ±10%, 50 Hz ±2% |
| Insulation | 100 mm polyurethane foam + glass fiber |
| Refrigeration | 1 × Copeland 10 HP scroll compressor + 1 × Tecumseh 6 HP dehumidification unit |
| Control System | OYO or TIME880 intelligent touchscreen controller with PT100 sensors |
| Compliance | GB/T 5170.2/5/18, GB/T 2423.1/2/3/4, GB 10592, GB 10586 |
Overview
The Apkji AP-HX Walk-in Environmental Test Chamber is an industrial-grade, large-volume environmental simulation system engineered for precision thermal and hygrothermal stress testing of components, assemblies, and finished products under controlled climatic conditions. Designed for laboratories, R&D centers, and quality assurance departments in electronics, automotive, aerospace, and defense sectors, the chamber operates on fundamental principles of forced-air convection, vapor compression refrigeration, and resistive steam humidification. Its walk-in architecture enables full-scale testing of large test articles—including vehicles subsystems, server racks, medical equipment cabinets, and military enclosures—without disassembly. The chamber’s structural integrity, thermal inertia management, and multi-zone airflow distribution ensure high reproducibility across extended test cycles (e.g., temperature cycling per IEC 60068-2-14, damp heat testing per IEC 60068-2-30, and storage tests per MIL-STD-810H Method 502.6).
Key Features
- Modular panel construction using 100 mm-thick insulated sandwich panels (polyurethane core + glass fiber reinforcement), enabling field assembly and scalable volume configuration from 2 m³ to 300 m³.
- Interior surfaces fabricated from brushed AISI 304 stainless steel; exterior cladding in electrostatically coated cold-rolled steel (light gray finish) for corrosion resistance and cleanroom-compatible hygiene.
- Dual-access personnel doors with interior/exterior handles, anti-slip diamond-pattern steel flooring, and integrated ramp for trolley-based specimen handling.
- Dual-refrigeration architecture: primary cooling via a single-stage Copeland ZB100 (10 HP) scroll compressor; independent dehumidification circuit powered by a Tecumseh R68A (6 HP) hermetic unit—both supported by Danfoss thermostatic expansion valves, Castel solenoid valves, and Parker Alco desiccant filters.
- High-efficiency air handling system featuring two 370 W EC centrifugal fans (Ø180 mm impeller), 15 kW stainless steel finned heating elements, and a 12 kW steam-type humidifier with PID-controlled water level and auto-drain functionality.
- Intelligent control platform based on either OYO 8226 or TIME880 programmable touchscreen controllers—capable of executing up to 100 segment temperature/humidity profiles, real-time data logging, and RS485/RS232 communication with host LIMS or MES systems.
Sample Compatibility & Compliance
The AP-HX accommodates diverse sample geometries and thermal masses without compromising chamber performance. Its internal dimensions are fully customizable, and cable/port penetrations (two sealed 80 mm diameter openings per side wall) support instrumentation integration for in situ monitoring. All electrical and mechanical subsystems comply with CE-mandated safety directives (EN 61000-6-2/6-4, EN 61000-3-2/3-3). Thermal and humidity performance validation follows national standards GB/T 5170.2 (temperature), GB/T 5170.5 (humidity), and GB/T 5170.18 (vibration isolation interface), ensuring traceability to SI units through calibrated PT100 Class A sensors (IEC 60751). The chamber supports audit-ready operation in GLP and GMP environments when paired with optional 21 CFR Part 11-compliant software modules for electronic signatures, audit trails, and user access controls.
Software & Data Management
The embedded controller provides native data acquisition at configurable intervals (1–60 s), storing time-stamped temperature/humidity readings, alarm logs, and setpoint history internally for ≥30 days. Export options include USB flash drive (CSV format) and Ethernet-based SCADA integration. Optional PC-based software (Apkji EnviroLog Pro) extends functionality with statistical process control (SPC) charts, deviation reporting against ISO 17025-defined uncertainty budgets, and automated report generation compliant with ISO/IEC 17025:2017 Clause 7.8. All firmware updates are delivered via secure HTTPS portal with versioned release notes and backward-compatible configuration migration tools.
Applications
- Accelerated life testing of lithium-ion battery packs under combined thermal cycling and high-humidity exposure (per UL 1642 Annex B and UN 38.3 T1–T5).
- Environmental stress screening (ESS) of avionics line-replaceable units (LRUs) per RTCA DO-160G Section 4 (temperature), Section 5 (humidity), and Section 7 (altitude simulation via optional pressure module).
- Validation of HVAC system performance under extreme ambient conditions (e.g., ASHRAE Standard 110 for fume hood certification).
- Material aging studies for polymer composites, conformal coatings, and elastomeric seals exposed to cyclic thermal shock and condensation regimes.
- Storage stability assessment of pharmaceutical packaging systems per ICH Q1A(R2) long-term and accelerated stability protocols.
FAQ
What is the standard lead time for custom-configured AP-HX chambers?
Standard delivery for base-model AP-HX units is 12–14 weeks after order confirmation; lead time for non-standard volumes or integrated instrumentation interfaces extends to 16–20 weeks depending on component availability.
Can the chamber be upgraded to support low-pressure (altitude) testing?
Yes—optional vacuum pump packages and reinforced door seals enable operation down to 10 kPa absolute pressure (equivalent to ~30,000 ft altitude), compliant with MIL-STD-810H Method 500.6.
Is third-party calibration certification available prior to shipment?
Yes—NIST-traceable calibration reports (including as-found/as-left data for all PT100 sensors and humidity transmitters) are provided upon request, with optional UKAS or CNAS accreditation via Apkji’s partner metrology labs.
What maintenance intervals are recommended for the refrigeration system?
Compressor oil analysis and filter dryer replacement every 24 months; annual inspection of refrigerant charge integrity, fan motor insulation resistance, and heater element continuity is advised per Apkji’s Maintenance Protocol MP-AP-HX-01.
Does the controller support remote diagnostics via VPN or cloud platform?
The standard controller includes Modbus TCP/IP and SNMP v3 support; cloud connectivity (AWS IoT Core or Azure IoT Hub) requires Apkji’s optional EnviroLink Gateway module with TLS 1.2 encryption and role-based API access control.
