OK-YT Series Liquid Thermal Shock Test Chamber

Overview

The OK-YT Series Liquid Thermal Shock Test Chamber is an engineered environmental test system designed to evaluate material and component resilience under rapid, repetitive transitions between extreme high and low temperatures. Unlike air-based thermal shock chambers, this system employs a dual-zone liquid-coupled architecture—comprising independent hot and cold reservoirs—with a pneumatically actuated sample carrier that transfers test specimens between zones in under 5 seconds. The chamber operates on the principle of controlled thermal inertia: high-capacity heat storage (hot zone up to +200 °C) and cryogenic retention (cold zone down to −70 °C) enable precise, repeatable thermal transients without direct refrigerant exposure to the test space. This design ensures minimal thermal lag, high reproducibility across cycles, and compliance with stringent aerospace, defense, and medical device qualification protocols where thermal expansion mismatch, interfacial delamination, solder joint fatigue, or polymer embrittlement must be quantified under accelerated stress conditions.

Key Features

• Large-format color LCD touchscreen controller with intuitive graphical interface, real-time parameter visualization, and multilingual support (English, German, Japanese)
• Dual independent refrigeration circuits: high-efficiency plate-type heat exchangers paired with a two-stage ultra-low-temperature freezing system using R404A/R23 blend refrigerants
• Liquid thermal reservoir architecture enabling stable temperature maintenance and rapid transition (<5 min recovery time per cycle) without airflow turbulence or condensation interference
• LAN-enabled Ethernet interface supporting remote operation, data logging, and integration with enterprise LIMS or MES platforms via Modbus TCP or custom API
• Flexible test mode selection: standalone high-temperature soak, low-temperature soak, or programmable thermal shock sequences—including user-defined dwell times, transition rates, and cycle counts
• Intelligent pre-conditioning logic: automatic pre-cooling/pre-heating activation prior to scheduled test initiation, minimizing setup delays and energy waste
• Comprehensive fault diagnostics with on-screen error codes, historical alarm logs, and step-by-step troubleshooting guidance aligned with IEC 61000-4 EMC standards

Sample Compatibility & Compliance

The OK-YT chamber accommodates solid-state electronic assemblies, metallic housings, ceramic substrates, polymer enclosures, PCBs, optical sensors, and medical-grade elastomers. Its static-test configuration—where samples remain stationary while thermal zones are isolated via pneumatic damper doors—eliminates mechanical vibration artifacts common in basket-transfer systems. All models meet ISO/IEC 17025 calibration traceability requirements when operated with NIST-traceable reference thermocouples. Regulatory alignment includes full conformance with GB/T 2423.1–2423.22 (equivalent to IEC 60068-2-1, -2, -14), MIL-STD-810H Method 503.5, and GJB 150.5A–2009. For regulated industries, optional audit trail modules support 21 CFR Part 11-compliant electronic signatures and immutable test record archiving.

Software & Data Management

Embedded firmware supports up to 99 programmable test profiles, each configurable with up to 999 segments (soak, ramp, hold). Real-time data acquisition records temperature at three spatial points (top/mid/bottom of test zone) at 1 Hz resolution. Export formats include CSV, PDF reports with pass/fail annotations, and XML metadata compatible with ASTM E2500-17 validation documentation. Optional PC software provides statistical process control (SPC) charts, Weibull failure analysis, and automated deviation alerts triggered by user-defined thresholds. All logged data retains timestamped operator ID, environmental ambient readings, and refrigerant pressure traces—critical for GLP/GMP audit readiness.

Applications

This chamber serves critical qualification workflows across sectors requiring accelerated life-cycle validation: thermal cycling endurance testing of avionics modules per DO-160 Section 4.5; solder joint reliability assessment in automotive ECUs per AEC-Q200; seal integrity verification for implantable device housings under ISO 14708-1; coefficient-of-thermal-expansion (CTE) mismatch evaluation in multi-material MEMS packaging; and accelerated aging studies of battery electrolytes and separator films. Its liquid-reservoir stability also supports extended-duration thermal soak tests required for epoxy cure profiling and adhesive bond strength validation per ASTM D1002.

FAQ

What distinguishes liquid thermal shock from air-based systems?

Liquid-reservoir chambers deliver superior temperature stability, faster recovery, and reduced moisture ingress risk due to sealed thermal mass—critical for hygroscopic or hermetically sealed devices.

Can the OK-YT series perform non-shock thermal cycling tests?

Yes: it operates as a dual-zone environmental chamber capable of independent high- and low-temperature soaks, linear ramps, and dwell-only profiles per IEC 60068-2-14.

Is third-party calibration certification available?

Certified calibration services—including uncertainty budgets per ISO/IEC 17025—are offered through accredited metrology partners with on-site or return-to-factory options.

What safety protections are integrated?

Over-temperature cutoff, refrigerant high-pressure shutdown, door interlock, phase-loss detection, and emergency stop circuit compliant with EN 60204-1.

How is software validation handled for regulated environments?

IQ/OQ documentation packages, including protocol templates and execution evidence, are provided for FDA, ISO 13485, and AS9100-aligned validation projects.