High-Temperature Aging Test Chamber – OK-T-72, 300°C Max Operating Temperature, LED Touch Controller, ASTM/IEC/GB Compliant

Overview

The OK-T-72 High-Temperature Aging Test Chamber is an industrial-grade environmental test system engineered for precise thermal aging, material stability evaluation, and accelerated life testing under controlled elevated temperatures. Designed in accordance with the fundamental principles of convective heat transfer and thermal equilibrium, this chamber employs forced-air circulation driven by a bottom-mounted centrifugal blower, ensuring uniform temperature distribution across the working volume. Its operational range extends from ambient +10°C up to 300°C — exceeding standard 290°C limits cited in many legacy specifications — making it suitable for evaluating polymer degradation, coating adhesion, electronic component reliability, and elastomer compression set per internationally recognized test protocols. The chamber’s structural architecture integrates dual independent heating circuits, enabling fine-grained thermal zoning and improved energy efficiency through microprocessor-regulated power modulation.

Key Features

• Temperature control range: RT+10°C to 300°C (calibrated and verified per IEC 60068-3-5)
• Precision temperature regulation with ±0.5°C control accuracy and ±1.5°C uniformity across the entire working space
• Dual 2 kW far-infrared nickel-chromium heating elements, independently controllable for optimized thermal response and redundancy
• PT100 Class A platinum resistance sensor mounted at geometric center for real-time feedback and closed-loop PID control
• Intelligent LED touch controller with programmable timer (0–999 min), auto-start, and deviation alarm functions
• Forced convection system featuring rear-bottom air intake, vertical heating duct, and lateral left-side discharge for laminar, low-turbulence airflow
• Robust mechanical construction: inner chamber fabricated from 1.2 mm thick SUS#304 stainless steel; outer enclosure from 1.5 mm cold-rolled steel with epoxy-polyester powder coating
• Comprehensive safety suite including over-temperature cut-off (mechanical backup), ground-fault circuit interruption (GFCI), and audible/visual alarm activation

Sample Compatibility & Compliance

The OK-T-72 accommodates a broad spectrum of non-volatile, non-flammable solid and semi-solid specimens — including PCB assemblies, rubber gaskets, silicone encapsulants, thermoplastic housings, and ceramic substrates. It is explicitly unsuitable for flammable solvents, volatile organic compounds, or samples releasing condensable vapors during exposure. The chamber meets the thermal performance requirements of multiple international standards: GB/T 2423.2 (China), IEC 60068-2-2 (Ed. 7.0), ASTM D3045 (Standard Practice for Heat Aging of Plastics), and ISO 188 (Rubber — Accelerated ageing). All calibration and verification procedures follow traceable NIST-equivalent reference standards, supporting GLP-compliant documentation workflows. Optional data logging modules enable audit-ready records aligned with FDA 21 CFR Part 11 requirements when paired with validated software platforms.

Software & Data Management

While the base configuration features a standalone microcontroller-based interface, optional RS485/Modbus RTU communication enables integration into centralized laboratory management systems (LIMS) or SCADA networks. Third-party software packages — such as LabVIEW-compatible drivers or custom Python-based DAQ scripts — support real-time temperature acquisition, trend analysis, and automated report generation (PDF/CSV). All logged data include timestamps, sensor ID, setpoint, actual value, and status flags (e.g., “heating active”, “alarm triggered”). Audit trails record operator login, parameter changes, and calibration events — essential for ISO/IEC 17025-accredited laboratories conducting accredited thermal testing services.

Applications

• Accelerated thermal aging of automotive interior materials (dashboards, door trims, seat foams) per SAE J2412
• Long-term stability assessment of adhesives and conformal coatings used in aerospace electronics
• Pre-conditioning of lithium-ion battery cells prior to electrochemical cycling tests
• Validation of solder mask integrity and PCB substrate dimensional stability at elevated temperatures
• Thermal endurance qualification of medical device housing polymers under ISO 10993-12
• Moisture barrier performance evaluation of packaging films via dry-heat conditioning cycles

FAQ

What is the maximum continuous operating temperature of the OK-T-72 chamber?

The chamber is rated for continuous operation up to 300°C, verified under load conditions with internal airflow active and chamber door sealed.
Can this chamber be used for humidity-controlled high-temperature testing?

No — the OK-T-72 is a dry-heat-only system. Humidity control requires a separate climate chamber model (e.g., OK-TH series) with integrated steam generator and dehumidification subsystem.
Is the temperature uniformity specification measured at empty or loaded condition?

Uniformity is validated per IEC 60068-3-5 using nine PT100 probes placed at standardized locations within the unloaded chamber. Load-induced gradients are characterized separately upon customer request.
Does the unit include factory calibration documentation?

Yes — each chamber ships with a Certificate of Conformance and a NIST-traceable temperature calibration report covering three points (100°C, 200°C, 300°C) performed at the manufacturing site.
What maintenance intervals are recommended for long-term reliability?

Blower motor lubrication and heater terminal inspection are advised every 12 months; PT100 sensor recalibration is recommended biannually or after 500 cumulative hours above 250°C.