Suying CH-500 / CH-1000 High-Temperature Air Aging Test Chamber

Overview

The Suying CH-500 and CH-1000 High-Temperature Air Aging Test Chambers are precision-engineered environmental test systems designed to evaluate material degradation under controlled thermal oxidative stress. Operating on the principle of accelerated air-oxidation aging—where specimens are exposed to elevated temperatures in ambient-pressure atmospheric air—the chambers simulate long-term service conditions experienced by polymers, elastomers, electrical insulation, automotive components, and electronic packaging materials during storage or operation. These instruments comply with internationally recognized test standards including ISO 188:2011 (Rubber—Accelerated ageing and heat resistance tests), GB/T 3512–2014 (Rubber—Determination of ageing characteristics in air), GB/T 2423.2–2001 (Environmental testing—Part 2: Tests—Test B: Dry heat), and JB/T 7444 (Specification for air-thermal aging test chambers). The chambers support both qualitative assessment (e.g., surface cracking, discoloration, embrittlement) and quantitative evaluation (e.g., tensile strength retention, elongation at break, hardness change) when used in conjunction with standardized mechanical or physicochemical post-test analysis.

Key Features

• Robust dual-wall construction: Interior chamber lined with imported mirror-finish austenitic stainless steel (AISI 304), exterior cabinet fabricated from cold-rolled steel with electrostatic powder coating for corrosion resistance and cleanroom-compatible surface integrity.
• Precision temperature control system: LED-display microcomputer PID controller with AT auto-tuning function; SSR solid-state relay output; temperature resolution of 0.1 °C; sampling interval of 0.2 ms; PT100 platinum resistance sensor (Class A accuracy per IEC 60751) ensures traceable thermal measurement.
• Engineered forced-air circulation: Low-noise, long-life AC motor coupled to stainless-steel axial fan blades; optimized airflow path design achieves uniform thermal distribution across the working volume (±2 °C uniformity).
• Patented adjustable air exchange mechanism (ZL201721135485.0): Motorized damper-controlled inlet/outlet system enables precise, repeatable air change rates from 3 to 20 times per hour; real-time airflow rate displayed on main interface.
• Comprehensive safety architecture: Dual independent overtemperature cutoff (mechanical and electronic), phase failure/phase reversal protection, motor thermal overload detection, fan overheat monitoring, and programmable test timer (up to 999.9 hours).

Sample Compatibility & Compliance

The CH-500 and CH-1000 accommodate standard test specimens per ISO 188 and GB/T 3512—including dumbbell-shaped tensile strips (Type 1 or 2), O-rings, sheet coupons (typically 25 mm × 25 mm × 2 mm), and wire insulation segments. Specimen racks are configurable to ensure unobstructed airflow and minimal thermal shadowing. All units are supplied with calibration certificates traceable to national metrological standards (JJF 1001–2003 for temperature). The chambers meet requirements for GLP-compliant laboratories when operated with documented SOPs and routine verification protocols. While not inherently 21 CFR Part 11 compliant, audit-ready data logging (via optional RS485/Modbus interface) supports integration into validated QC environments requiring electronic record integrity.

Software & Data Management

Standard configuration includes embedded controller firmware supporting ramp-soak profiles, multi-step temperature programs, and event-triggered alarms. Optional PC-based software (Suying TestSuite v3.x) provides real-time graphing, CSV export, alarm history review, and user-level access control (admin/operator roles). Data logs include timestamped temperature setpoint/actual values, air exchange rate, elapsed test time, and fault codes—all stored internally for ≥30 days. For regulated industries, optional Ethernet module enables secure remote monitoring and integration with LIMS or MES platforms via standard TCP/IP protocols.

Applications

• Evaluation of thermal oxidative stability in rubber compounds, silicone elastomers, PVC, polyolefins, and thermoplastic vulcanizates (TPVs).
• Pre-qualification screening of cable jacketing, connector housings, and PCB substrate materials prior to automotive AEC-Q200 or aerospace AS50881 qualification.
• Accelerated life modeling for sealing gaskets, O-rings, and diaphragms used in industrial valves and hydraulic systems.
• QC release testing of raw materials and finished goods in accordance with internal specifications aligned with ASTM D573, ISO 1431-1, or IEC 60811-2-1.
• Research into antioxidant efficacy, filler dispersion effects, and crosslink density evolution under thermal stress.

FAQ

What standards does this chamber formally comply with?
It meets the technical and performance requirements of JB/T 7444, GB/T 3512–2014, GB/T 2423.2–2001, GB/T 2423.3–1993, and ISO 188:2011.
Is the air exchange rate calibrated and verifiable?
Yes—the BELIMO-derived pneumatic actuator system allows fine adjustment and repeatable setting; users may verify actual airflow using an anemometer at the exhaust port per ISO 188 Annex B procedures.
Can the chamber be integrated into a centralized lab monitoring network?
With the optional RS485 or Ethernet communication module, it supports Modbus RTU/TCP protocols for third-party SCADA or LabVantage integration.
Does the unit include validation documentation for IQ/OQ?
Factory-installed calibration reports and a basic User Requirement Specification (URS) template are provided; full IQ/OQ protocol execution requires site-specific commissioning by qualified personnel.
Are non-standard chamber dimensions available?
Yes—custom internal volumes, extended temperature ranges (up to 300 °C), and specialized airflow configurations can be engineered upon request, subject to structural and thermal validation.