OK-YT Series Liquid Thermal Shock Test Chamber
| Brand | OK |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Price | USD 12,500 (FOB) |
| Internal Dimensions (W×H×D) | 40×35×30 cm to 70×60×60 cm |
| External Dimensions (W×H×D) | 145×180×140 cm to 190×170×270 cm |
| Hot Zone Temperature Range | RT to +200 °C |
| Cold Zone Temperature Range | RT to −70 °C |
| Test Zone Temperature Range | +60 °C to +150 °C (hot shock) |
| Temperature Control Accuracy | ±0.5 °C |
| Temperature Uniformity | ±2.0 °C |
| Soak Time (Hot Zone) | ~30 min (RT → +150 °C) |
| Soak Time (Cold Zone) | ~85 min (RT → −70 °C) |
| Recovery Time | <5 min |
| Refrigeration System | Hermetic or Semi-Hermetic Compressor with Eco-Friendly Refrigerants (R404A/R23) |
| Interior Material | Mirror-Finished SUS#304 Stainless Steel |
| Exterior Material | SUS#304 Stainless Steel or Powder-Coated Steel |
| Insulation | High-Density Fire-Retardant PU Foam |
| Power Supply | AC 380 V ±5%, 50 Hz ±0.5 Hz, 3-Phase 5-Wire |
| Interface | LAN Port for Remote Monitoring & Control |
| Compliance Standards | GB/T 2423.1–1989, GB/T 2423.2–1989, GB/T 2423.22–1989, GJB 150.5–1986, GJB 360.7–1987, GJB 367.2–1987 |
Overview
The OK-YT Series Liquid Thermal Shock Test Chamber is an engineered environmental test system designed to evaluate the structural integrity and functional reliability of materials and components under rapid, repeated transitions between extreme high and low temperatures. Unlike conventional temperature cycling chambers, this unit employs a dual-zone liquid thermal shock architecture—comprising independent hot and cold reservoirs—with a pneumatically actuated sample carrier that transfers test specimens between zones in under five seconds. This configuration enables true thermal shock profiles compliant with MIL-STD-810G Method 503.5 and IEC 60068-2-14, simulating real-world operational stresses induced by thermal expansion mismatch, interfacial delamination, solder joint fatigue, and phase-change-induced microcracking. The chamber is widely deployed in aerospace qualification (e.g., avionics enclosures, turbine blade coatings), defense electronics (radar modules, missile guidance systems), medical device sterilization validation (polymer housings, sensor assemblies), and nuclear instrumentation (control rod actuators, radiation-hardened PCBs), where failure modes must be identified prior to field deployment.
Key Features
- Intuitive 7-inch color LCD touchscreen controller with multi-language support (English, German, Japanese), real-time graphing of zone temperatures, and programmable ramp/soak profiles.
- Dual-refrigeration circuit architecture: primary R404A-based system for the cold zone (−70 °C capability) and secondary R23 cascade stage for ultra-low stabilization; all compressors are hermetic or semi-hermetic units meeting ISO 8573-1 Class 2 air purity requirements.
- Liquid-immersion compatible design with stainless-steel internal chamber (SUS#304 mirror finish), fire-retardant polyurethane insulation (≥35 mm thickness), and sealed door gaskets rated for >100,000 cycles.
- LAN-enabled Ethernet interface supporting Modbus TCP and HTTP API protocols—enabling integration into centralized lab management platforms (e.g., LabVantage, Thermo Fisher SampleManager) and remote supervision via secure TLS 1.2 connections.
- Triple-mode operation: independent high-temperature testing, independent low-temperature testing, and synchronized thermal shock cycling—all programmable with user-defined dwell times, transition rates, and cycle counts (up to 9999 cycles).
- Pre-conditioning logic: automatic pre-cooling or pre-heating initiation based on scheduled start time, reducing test preparation overhead and ensuring thermal equilibrium at t=0.
- Comprehensive diagnostics: self-monitoring of refrigerant pressure differentials, compressor oil temperature, fan RPM, and heater current—triggering audible/visual alerts and logged fault codes traceable to ISO/IEC 17025 root-cause analysis workflows.
Sample Compatibility & Compliance
The OK-YT chamber accommodates rigid and semi-rigid samples up to 60 kg per cycle, including metallic alloys (Al 7075, Ti-6Al-4V), thermoplastics (PEEK, PPS), elastomers (FKM, EPDM), multilayer PCBs, MEMS sensors, and hermetically sealed optoelectronic modules. All internal fixtures—including two-tier SUS#304 adjustable shelves and a single 50-mm diameter cable port—are certified non-outgassing per ASTM E595. The system meets full regulatory alignment with GB/T 2423 series (China National Standard), GJB 150.5 (PLA General Specification), and harmonized IEC 60068-2-14:2021 for temperature shock testing. Optional calibration certificates (NIST-traceable Pt100 sensors) and IQ/OQ documentation packages are available for GLP/GMP environments subject to FDA 21 CFR Part 11 audit requirements.
Software & Data Management
Embedded firmware supports CSV export of time-stamped temperature logs (1 Hz sampling resolution) directly to USB storage or network shares. The optional PC-based OK-Control Suite provides advanced features: automated report generation (PDF/Excel) with pass/fail annotations per GB/T 2423.22 criteria; statistical process control (SPC) charting of delta-T across cycles; and electronic signature-enabled test record archiving compliant with ALCOA+ principles. Audit trails record all parameter modifications, user logins, and system events with immutable timestamps—fully satisfying data integrity requirements under ISO/IEC 17025:2017 Clause 7.5.2.
Applications
This thermal shock chamber serves critical roles in accelerated reliability testing for: aerospace composite layups (ASTM D5511 validation), automotive power electronics (ISO 16750-4 thermal shock endurance), implantable medical devices (ISO 14971 risk analysis), semiconductor packaging (JEDEC JESD22-A104 qualification), and photovoltaic module backsheet adhesion (IEC 61215-2 MQT10). It is routinely specified in supplier quality agreements (e.g., Boeing D6-17487, Ford WERS-10000) for first-article inspection and production lot sampling.
FAQ
What is the maximum thermal transition rate achievable between hot and cold zones?
The mechanical transfer mechanism achieves specimen movement in ≤3.5 seconds, enabling thermal transition rates exceeding 150 °C/min under nominal load conditions.
Can the chamber operate continuously for extended qualification campaigns (e.g., 1000-cycle tests)?
Yes—continuous operation is supported for up to 72 hours with scheduled auto-defrost cycles; compressor duty cycle is dynamically managed to maintain oil temperature within ASHRAE Guideline 36 limits.
Is third-party calibration support available for ISO/IEC 17025 accreditation?
Certified calibration services—including uncertainty budgets per ISO/IEC 17025 Annex A.4—are offered through accredited metrology partners with global service coverage.
Does the system comply with environmental refrigerant regulations (e.g., EU F-Gas Regulation 517/2014)?
Refrigerant selection (R404A/R23 blend) complies with current phase-down schedules; retrofit kits for low-GWP alternatives (e.g., R449A, R452A) are available upon request.
How is data security handled during remote LAN access?
All network communications use TLS 1.2 encryption; role-based access control (RBAC) enforces read-only or admin privileges, and session timeouts are configurable per NIST SP 800-53 Rev. 4 IA-11 requirements.
