English Product Name
| Brand | OK |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Temperature Range | RT+10°C to 200°C / 300°C |
| Temperature Uniformity | ±2°C |
| Temperature Fluctuation | ±0.5°C |
| Air Exchange Rate | 2–100 cycles/hour (measurable & adjustable at 80°C) |
| Exchange Time Setting Range | 1 min – 99 h |
| Power Rating | 4.0–9.0 kW (model-dependent) |
| Internal Dimensions (L×W×H, mm) | 450×450×500 to 800×1000×1000 |
| Rotating Turntable Diameter | Φ250–Φ700 mm |
| Compliance | ASTM D5423-09 (Type II), ASTM D5374-05, UL 1581, IEC 60811, JIS K7212, GB/T 2951, VDE 0472 |
Overview
The OK-HQ Series Forced-Air Thermal Aging Test Chamber is an engineered environmental test system designed to evaluate the long-term thermal stability and oxidative degradation behavior of polymeric materials—including insulating wires, rubber compounds, plastics, leather, and textiles—under controlled, accelerated aging conditions. Based on the principle of forced convection with precisely regulated air exchange, this chamber replicates real-world thermal stress environments while maintaining traceable, repeatable airflow dynamics. Unlike static ovens, the OK-HQ integrates a calibrated air exchange measurement subsystem compliant with JIS K7212, enabling quantitative determination of volumetric air replacement rate via power consumption monitoring (Watt-hour meter + digital timer). Its thermally stable architecture supports continuous operation across a wide temperature range (RT+10°C to 200°C or 300°C), making it suitable for standardized aging protocols required in R&D labs, quality assurance departments, and third-party certification facilities.
Key Features
- Precision-engineered horizontal forced-air circulation system with dual-side airflow baffles and high-temperature-resistant centrifugal blower, ensuring ±2°C temperature uniformity across the working chamber.
- Digital programmable controller with PID algorithm, 0.1°C resolution for both setpoint and display, integrated timer (1–9999 min), and real-time logging of operational parameters.
- Adjustable air exchange mechanism calibrated per JIS K7212: air exchange rate (2–100 cycles/hour) is quantified using a Taiwan-made TAIK watt-hour meter and synchronized digital timer—enabling compliance verification without external instrumentation.
- Stainless steel (SUS304) interior chamber with argon-arc welded seams; A3 steel exterior with electrostatic powder coating; 50 mm diameter test port on left side for signal/power feedthrough.
- Rotating turntable (8–10 rpm, removable, diameters from Φ250 mm to Φ700 mm) ensures uniform exposure of asymmetrical specimens to thermal gradients.
- Multi-layer vacuum-insulated observation window with built-in halogen lighting provides unobstructed visual monitoring under elevated temperatures.
- Comprehensive safety architecture: over-temperature cut-off, motor overheat protection, leakage current detection, short-circuit interruption, and audible/visual fault indicators.
Sample Compatibility & Compliance
The OK-HQ chamber accommodates diverse specimen geometries—from insulated wire reels and molded elastomer strips to textile swatches and cable jacket segments—within its five standard internal volume configurations (100 L to 800 L). Its airflow design meets the geometric and thermal performance criteria defined in ASTM D5423-09 (Type II laboratory oven for electrical insulation), ASTM D5374-05 (forced-air oven calibration), UL 1581 (Section 1060), IEC 60811-1-2, GB/T 2951.12, VDE 0472, and JIS C 3005. The air exchange rate calibration method aligns with JIS K7212, where exchange frequency is derived from measured electrical energy consumption under steady-state conditions—a metrologically traceable approach accepted in GLP-regulated laboratories.
Software & Data Management
While the base configuration employs a stand-alone LED-based microcontroller, optional RS485/Modbus RTU interface enables integration into centralized lab data acquisition systems. All operational events—including start/stop timestamps, temperature deviations exceeding ±1.0°C, air exchange cycle completion, and safety interlock triggers—are logged with time stamps and retained for ≥30 days. For FDA 21 CFR Part 11–compliant environments, validated PC-based software (sold separately) provides electronic signatures, audit trails, user access levels, and PDF report generation meeting ISO/IEC 17025 documentation requirements.
Applications
- Accelerated aging of PVC, PE, XLPE, and EPR insulation materials per IEC 60811-1-2 and UL 1581 Clause 1060.
- Thermal endurance evaluation of automotive wiring harnesses under SAE J1128 and ISO 6722.
- Oxidative degradation kinetics studies of elastomers used in sealing applications (ASTM D573).
- Pre-compliance screening of flame-retardant cables prior to full-scale UL or VDE certification testing.
- Quality control release testing for rubber gaskets, conveyor belts, and coated fabrics exposed to elevated ambient temperatures.
FAQ
What standards does the OK-HQ chamber directly support?
It is configured and validated to meet ASTM D5423-09 (Type II), ASTM D5374-05, UL 1581, IEC 60811-1-2, GB/T 2951.12, JIS C 3005, and JIS K7212 for air exchange quantification.
Can the air exchange rate be verified independently?
Yes—the integrated TAIK watt-hour meter and digital timer allow direct calculation of air exchange cycles per hour per JIS K7212 methodology, eliminating reliance on external flow meters.
Is the turntable speed adjustable?
The standard turntable operates at a fixed 8–10 rpm; variable-speed DC motor upgrade is available upon request.
What is the maximum allowable load mass inside the chamber?
Maximum recommended specimen mass is 15% of internal chamber volume in kg (e.g., ≤12 kg for OK-HQ-800); excessive mass may impair thermal uniformity and air exchange fidelity.
Does the system include calibration certificates?
A factory-assembled temperature uniformity report and air exchange verification record are supplied with each unit; NIST-traceable calibration certificates for sensors are available as optional add-ons.
