OK-STH-12.0015m² Walk-in Environmental Test Chamber (Temperature Aging Room)
| Brand | OK Instruments |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Producer |
| Country of Origin | China |
| Model | OK-STH-12.0015m² |
| Working Chamber Dimensions (D×W×H) | 3000 × 2000 × 2000 mm |
| Temperature Range Options | A: 0°C / B: −20°C / C: −40°C / D: −60°C / E: −70°C |
| Temperature Uniformity | ±3°C |
| Temperature Control Accuracy | ±1°C |
| Heating Rate | 1.0–4.0°C/min |
Overview
The OK-STH-12.0015m² Walk-in Environmental Test Chamber is an engineered solution for accelerated thermal aging, burn-in, and long-duration reliability testing of electronic assemblies, power modules, automotive ECUs, and industrial control systems. Designed around a robust insulated enclosure architecture and precision air-handling system, it operates on the principle of forced-air convection with dual-zone heating/cooling modulation to maintain stable thermal conditions across large-volume test spaces. Unlike benchtop chambers, this walk-in platform supports simultaneous conditioning of hundreds of units under real-world operational loads—enabling statistically significant failure mode analysis per MIL-STD-810H, IEC 60068-2, and JEDEC JESD22-A108 thermal cycling protocols. Its structural design complies with ASHRAE 110 and ISO 16750-4 environmental stress requirements for automotive component validation.
Key Features
- Modular high-density polyurethane (PU) insulated panel construction (150 mm thickness), sealed with continuous tongue-and-groove joints and silicone gasketing to minimize thermal bridging and leakage.
- Independent refrigeration circuitry with cascade low-temperature compressors (optionally configured for −70°C operation using R23/R404A mixed refrigerant stages).
- Programmable PID-based temperature controller with dual-sensor feedback loop (supply/return air) and auto-tuning capability for consistent ramp-hold-soak profiles.
- Integrated electrical feedthrough system supporting up to 32 independently monitored AC/DC power circuits (configurable voltage/current ratings), compliant with IEC 61000-4-11 for conducted immunity during powered testing.
- Real-time chamber monitoring via embedded RS485/Modbus RTU interface; optional Ethernet/IP or OPC UA gateway for SCADA integration.
- Structural load-bearing floor rated for ≥1500 kg/m², compatible with standard pallet racking and custom fixture mounting.
Sample Compatibility & Compliance
This chamber accommodates heterogeneous sample configurations—including PCBs mounted on burn-in boards, fully assembled server racks, battery packs, and embedded controllers—without compromising airflow uniformity. Internal airflow is optimized through computational fluid dynamics (CFD)-validated duct geometry and variable-frequency-driven centrifugal blowers, ensuring ≤±3°C spatial deviation across the full working volume (per ASTM E744-22 Annex A2). All electrical safety components meet UL 61010-1 and GB/T 22988 certification standards. The system architecture supports GLP/GMP-aligned audit trails when paired with validated data acquisition software (see Software & Data Management section).
Software & Data Management
The chamber integrates with OK-Logix™ Test Suite—a Windows-based application enabling multi-segment temperature programming, real-time parameter logging (temperature, power consumption, alarm status), and automated report generation in PDF/CSV formats. Data integrity safeguards include user role-based access control (RBAC), electronic signatures, and 21 CFR Part 11-compliant audit trail functionality (optional validation package available). Historical datasets are stored locally on encrypted SSD storage with redundant backup to network-attached storage (NAS) via configurable SMB/CIFS protocol. Exported logs conform to IEEE 1139-2008 time-series metadata standards for cross-platform traceability.
Applications
- Accelerated life testing (ALT) of semiconductor devices and power electronics under sustained thermal stress.
- Burn-in screening for aerospace avionics, medical imaging subsystems, and railway signaling hardware.
- Thermal validation of battery management systems (BMS) across extreme ambient conditions per UN 38.3 Section 50.3.
- Environmental stress screening (ESS) of automotive ADAS modules prior to AEC-Q200 qualification.
- Process qualification of conformal coating curing cycles and adhesive bond stability assessments.
FAQ
What is the maximum allowable internal heat load for stable temperature control?
The chamber is rated for continuous internal heat dissipation up to 12 kW at −40°C operation; derating applies at lower setpoints. A detailed thermal load calculation sheet must be submitted during quotation phase.
Can the chamber be configured for humidity control?
Standard configuration is dry-air only. Optional steam-based humidification (up to 95% RH at 85°C) or dehumidification modules are available as factory-installed add-ons.
Is third-party calibration and IQ/OQ documentation supported?
Yes. Factory-applied NIST-traceable calibration certificates and full Installation Qualification (IQ) / Operational Qualification (OQ) protocols are available upon request, aligned with ISO/IEC 17025 requirements.
What maintenance intervals are recommended for refrigeration system longevity?
Compressor oil analysis and refrigerant purity checks every 12 months; filter-drier replacement every 24 months; full system performance verification every 36 months.
Does the controller support remote diagnostics and firmware updates?
Yes. Secure remote access via TLS-encrypted VNC connection enables OEM-level diagnostics; firmware updates are delivered as signed binary packages with SHA-256 checksum validation.
