OK-HQ Series Forced-Air Thermal Aging Test Chamber
| Brand | OK Instruments |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Temperature Range | RT+10°C to 200°C / 300°C |
| Temperature Uniformity | ±2°C |
| Temperature Stability | ±0.5°C |
| Air Exchange Rate | 2–100 cycles/hour (measurable and adjustable at 80°C) |
| Air Exchange Timing | 1 min – 99 h programmable |
| Internal Chamber Volume | 100 L – 800 L (model-dependent) |
| Power Consumption | 4.0–9.0 kW |
| Rotating Turntable Speed | 8–10 rpm |
| Turntable Diameter | Φ250–Φ700 mm |
| Compliance | ASTM D5423-09 (Type II), ASTM D5374-93 (2005), 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 for accelerated thermal aging evaluation of polymeric materials—including elastomers, plastics, insulating compounds, textiles, and wire & cable sheathing—under controlled, reproducible high-temperature conditions. Based on the principle of forced convection heating with precisely regulated air exchange, this chamber simulates long-term thermal degradation effects in a compressed timeframe, enabling predictive assessment of material service life, oxidation resistance, and mechanical property retention. The system conforms to standardized test protocols defined in ASTM D5423-09 (Type II laboratory ovens), ASTM D5374-93 (2005), UL 1581, and IEC 60811, ensuring data integrity for regulatory submissions, quality assurance audits, and R&D validation across automotive, aerospace, electrical insulation, and cable manufacturing sectors.
Key Features
- High-precision forced-air circulation system featuring low-noise, high-temperature-rated centrifugal blower and optimized baffle-guided airflow path—guaranteeing temperature uniformity of ±2°C across the working volume.
- Digitally controllable air exchange mechanism compliant with JIS K7212 methodology: integrated digital watt-hour meter and timer enable direct calculation of air exchange rate (2–100 cycles/hour) from power consumption at reference temperature (80°C).
- Microprocessor-based PID + SSR temperature controller with 0.1°C resolution for both setpoint and display; programmable ramp-soak profiles and up to 9999-minute timer for unattended operation.
- Stainless steel (SUS304) interior chamber with argon-arc welded seams and electropolished mirror finish; A3 steel exterior with durable powder coating; 50 mm-diameter feedthrough port (left side) for external sensor or power line integration.
- Removable rotating turntable (Φ250–Φ700 mm, 8–10 rpm) with independent motor drive—ensuring uniform exposure of asymmetrical or vertically oriented specimens.
- Multi-layer vacuum-insulated observation window with built-in halogen lighting; wide-angle projection illumination for real-time visual monitoring without thermal leakage.
- Comprehensive safety architecture: over-temperature cut-off, motor overheat protection, earth leakage circuit breaker, short-circuit protection, and status-indicating LED panel for all critical functions.
Sample Compatibility & Compliance
The OK-HQ chamber accommodates diverse specimen geometries—from flat polymer sheets and insulated wire segments to molded elastomer components and textile swatches—within its standardized internal dimensions (100 L to 800 L). Its design satisfies stringent requirements for electrical insulation aging per UL 1581 Section 1060, IEC 60811-1-2, and GB/T 2951.12. Validation-ready construction supports GLP/GMP-aligned workflows: all control parameters are logged with timestamped audit trails, and hardware interlocks prevent unauthorized deviation from preset test conditions. Optional calibration certificates traceable to NIST standards are available upon request.
Software & Data Management
While the base configuration employs a robust LED-display PID controller, optional RS485/Modbus RTU interface enables integration with LabVIEW, MATLAB, or custom SCADA systems for remote monitoring, automated data logging, and CSV export. All temperature setpoints, dwell times, air exchange intervals, and real-time chamber readings are stored internally with non-volatile memory retention. For regulated environments, the system supports 21 CFR Part 11-compliant electronic signatures when paired with validated third-party software platforms—facilitating full traceability in FDA-submitted stability studies.
Applications
- Evaluation of thermal oxidative stability in PVC, EPDM, silicone, and fluoropolymer compounds.
- Accelerated aging of insulated wires and cables per UL 1581, CSA C22.2 No. 0.3, and EN 50363.
- Pre-qualification testing of gaskets, seals, and hoses under continuous elevated-temperature exposure.
- Material screening for automotive under-hood components subject to ISO 11347 or SAE J2238.
- Validation of shelf-life predictions for medical device polymer housings per ISO 10993-12.
FAQ
What standards does the OK-HQ chamber explicitly meet?
It complies with ASTM D5423-09 (Type II), ASTM D5374-93 (2005), UL 1581, IEC 60811-1-2, JIS K7212, GB/T 2951.12, and VDE 0472.
Can air exchange rate be verified independently?
Yes—the included digital watt-hour meter and timer allow direct calculation per JIS K7212 using power consumption at 80°C, eliminating reliance on volumetric flow meters.
Is the turntable speed adjustable?
The standard turntable operates at a fixed 8–10 rpm; variable-speed DC motor upgrade is available as a factory option.
What is the maximum operating temperature for each model?
All OK-HQ models support RT+10°C to 200°C as standard; 300°C capability is available on select configurations with upgraded heating elements and insulation.
Does the chamber support automated data export?
With optional RS485 communication module, it transmits real-time temperature, elapsed time, and alarm status to external systems via Modbus RTU protocol.
