English Product Name

Overview

The OK-YT Series Liquid Thermal Shock Test Chamber is a high-performance, dual- or tri-zone environmental test system engineered for rapid, repeatable thermal shock evaluation of electronic components, aerospace hardware, automotive ECUs, LED modules, PCB assemblies, and advanced polymer or ceramic materials. Unlike air-based thermal shock chambers, this system employs liquid-phase heat transfer media—such as silicone oil or glycol-water mixtures—to achieve significantly higher thermal mass transfer rates and superior temperature uniformity across the test specimen. The chamber operates on a moving-basket principle: a pneumatically driven, precision-positioned sample carrier rapidly shuttles between independently controlled high-temperature and low-temperature liquid baths. This architecture enables sub-10-second transition times and ≤5-minute temperature stabilization—meeting stringent requirements defined in MIL-STD-810G Method 503.5, IEC 60068-2-14 (Change of Temperature), and JIS Z 8702 for accelerated reliability assessment.

Key Features

• Triple-zone configuration optional (hot / cold / ambient soak zones) for extended dwell-time flexibility and sequential multi-step shock protocols.
• High-resolution 7-inch color TFT LCD touchscreen controller with bilingual (English/Chinese) interface and intuitive drag-and-drop programming logic.
• Energy-optimized dual-stage refrigeration system utilizing HFC-134a or R-404A alternatives, compliant with EU F-Gas Regulation and EPA SNAP guidelines.
• Forced-convection liquid circulation within both hot and cold baths ensures ±0.3 °C spatial uniformity (per ASTM E2202-21 Annex A1).
• Integrated real-time curve plotting engine with non-volatile memory; stores up to 30 days of continuous temperature/time data at 1-second sampling intervals.
• Programmable sequence logic supports nested loops, conditional branching, and dynamic trigger events (e.g., relay activation upon reaching target ramp rate).
• Full audit trail capability with user-level access control, timestamped operation logs, and exportable CSV/Excel reports—aligned with GLP and ISO/IEC 17025 documentation requirements.
• Modular cooling architecture permits field-selectable air-cooled or water-cooled condenser configurations to accommodate facility infrastructure constraints.

Sample Compatibility & Compliance

The OK-YT series accommodates specimens up to 2 kg mounted on standardized stainless-steel baskets with configurable fixture inserts. Its liquid immersion design eliminates convective air boundary layer effects, making it especially suitable for testing hermetically sealed devices, MEMS sensors, solder-joint reliability samples, and thin-film optoelectronic substrates where surface-to-bulk thermal lag must be minimized. All models are factory-verified per IEC 60068-3-5 (Environmental Testing – Guidance on Thermal Shock Testing) and include traceable NIST-traceable calibration certificates for both hot and cold bath sensors. Optional IQ/OQ documentation packages support FDA 21 CFR Part 11 compliance for regulated pharmaceutical or medical device validation environments.

Software & Data Management

The embedded controller firmware supports RS-232C serial communication for remote monitoring, script-based test initiation, and automated data logging via third-party SCADA or LabVIEW environments. An optional Windows-based PC application provides advanced analysis tools—including derivative-based ramp-rate verification, dwell-time deviation alerts, and statistical process control (SPC) charting for long-term chamber performance trending. All test records are digitally signed and time-stamped using internal RTC with battery backup; raw binary logs are stored in IEEE 754-compliant floating-point format to preserve numerical integrity across decades of archival retention.

Applications

• Qualification testing of avionics modules per DO-160 Section 4 (Temperature Variation).
• Failure mode analysis of power semiconductor packages under repeated thermal cycling stress.
• Validation of conformal coating adhesion and microcrack propagation in PCBAs exposed to extreme ΔT gradients.
• Material characterization of thermally induced strain in piezoelectric ceramics and shape-memory alloys.
• Accelerated life testing of solid-state lighting systems (SSL) per ENERGY STAR Lamps V2.1 Annex G.
• Pre-compliance screening for automotive electronics against ISO 16750-4 (Electrical Loads) and GMW3172.

FAQ

What liquid media are compatible with the OK-YT chamber?**
Silicone oil (e.g., Dow Corning 200 Fluid), 50/50 ethylene glycol–water mixture, deionized water (for limited −10 °C to +100 °C range), or custom-certified heat transfer fluids meeting ASTM D6793 specifications.
Can the system operate continuously for extended qualification runs?**
Yes—continuous operation up to 9999 cycles is supported, with automatic fault detection, compressor duty-cycle modulation, and predictive maintenance alerts based on cumulative runtime and refrigerant pressure trends.
Is external calibration support available?**
Certified third-party calibration services—including on-site sensor verification, thermal mapping (per ISO/IEC 17025), and uncertainty budgeting—are available through authorized regional service partners.
Does the controller support network connectivity?**
Standard RS-232C is included; optional RS-485 Modbus RTU or Ethernet/IP adapters can be integrated for factory-wide MES or CMMS integration.
How is safety interlocked during basket movement?**
Mechanical limit switches, redundant pneumatic pressure sensors, and PLC-monitored door status ensure zero-motion execution unless all safety gates are confirmed closed and bath temperatures are within operational tolerance bands.