ACS Custom-Built Thermal Shock Test Chamber Series OK-TS (80L to 1000L Capacity)
| Brand | ACS |
|---|---|
| Temperature Range Options | 0°C to +150°C (Model B) |
| Internal Volume | 80 L, 150 L, 225 L, 408 L, 800 L, or 1000 L |
| Temperature Uniformity | ±1.5°C |
| Temperature Stability | ±0.5°C |
| Humidity Range | 20–98% RH |
| Humidity Uniformity | ±3% RH |
| Humidity Stability | ±2% RH |
| Heating Rate (non-linear, no-load) | ~3°C/min |
| Cooling Rate (non-linear, no-load) | ~1°C/min |
| Construction | AISI 304 stainless steel interior & exterior |
| Insulation | Rigid polyurethane foam + glass wool |
| Refrigeration System | Hermetic scroll compressors (Tecumseh or Copeland), eco-friendly refrigerant (R404A/R507) |
| Controller | TEMI880 color touchscreen programmable climate controller (English/Chinese UI) |
| Air Circulation | Wide-band vertical airflow (top-out, bottom-in) |
| Condensation Management | Automatic drain system with digital pressure monitoring |
| Compliance | Designed for ISO 16750-4, IEC 60068-2-14, MIL-STD-810H, JIS Z 8701, and ASTM D4332 environmental stress testing |
Overview
The ACS Custom-Built Thermal Shock Test Chamber Series OK-TS is an industrial-grade environmental test system engineered for rapid, repeatable thermal cycling under controlled temperature and humidity conditions. Based on the principle of accelerated thermal stress exposure—where specimens undergo abrupt transitions between extreme high- and low-temperature zones—the chamber replicates real-world operational extremes encountered by automotive ECUs, aerospace avionics, power electronics, battery modules, and sealed consumer electronics. Unlike conventional temperature-humidity chambers, the OK-TS series implements a dual-zone or three-zone thermal shock architecture (configurable per application), enabling programmable dwell times, ramp rates, and transition intervals in accordance with ISO 16750-4 Annex C and IEC 60068-2-14 Clause 6. The system supports both air-to-air and liquid-to-air shock configurations, with optional cryogenic nitrogen assist for sub–70°C transitions. All models operate within ambient conditions of +5°C to +35°C and comply with CE electromagnetic compatibility (EMC) directives and RoHS material restrictions.
Key Features
- Modular chamber architecture with scalable internal volumes (80 L to 1000 L), supporting single-unit validation or full-system integration for large-format components such as EV battery packs or server racks.
- Triple-layer insulated sandwich panel construction: outer pre-painted steel cladding, core of high-density polyurethane foam (λ ≤ 0.022 W/m·K) and glass wool, and inner AISI 304 stainless steel lining for corrosion resistance and cleanroom-compatible surface finish.
- Dual independent refrigeration circuits with cascade staging for stable operation at –70°C; equipped with electronic expansion valves, oil return management, and high-efficiency finned-tube condensers with forced-air cooling.
- TEMI880 programmable controller featuring 10.4-inch TFT color touchscreen, 1000-segment profile programming, real-time data logging (internal SD card + USB export), and built-in Ethernet/RS485 interfaces for SCADA integration.
- Comprehensive safety architecture: compressor overheat/overcurrent/overpressure protection, dry-run prevention for humidifiers, auto-shutdown on chamber overtemperature (>+160°C) or dew-point violation, and redundant PT100 sensor validation.
- Standard ergonomic accessories include double-glazed observation window (tempered laminated glass), Ø50 mm cable/port access port (left-side mounted, sealable), two adjustable stainless steel sample racks, LED interior lighting, castor-mounted mobility base, and integrated stainless steel water reservoir with level sensor.
Sample Compatibility & Compliance
The OK-TS series accommodates diverse sample geometries—from PCB assemblies and semiconductor packages to complete vehicle control units and medical imaging subsystems—via customizable mounting fixtures and load-bearing shelves rated up to 50 kg per shelf. Humidity control utilizes surface-evaporation technology with nickel-chromium heating elements and deionized water feed, meeting ASTM D4332 conditioning requirements for hygrothermal stability assessment. All systems are factory-calibrated traceable to NIST standards and support GLP/GMP audit readiness through configurable event logging, user access levels, and electronic signature capability (optional FDA 21 CFR Part 11 compliance package). Regulatory alignment includes ISO 9001:2015 manufacturing processes and design verification per IEC 61000-6-2/6-4 immunity/emission standards.
Software & Data Management
ACS provides the proprietary ClimateControl Pro software suite for Windows-based remote operation, multi-chamber synchronization, and automated report generation (PDF/CSV). The platform enables real-time parameter visualization, deviation alarms with email/SMS notification, historical trend analysis with statistical process control (SPC) overlays, and export-ready datasets compliant with laboratory information management systems (LIMS). Controller firmware supports Modbus TCP and OPC UA protocols for seamless integration into MES and Industry 4.0 environments. Audit trails record all operator actions—including profile edits, manual overrides, and calibration events—with time-stamped, non-erasable entries stored locally and mirrored to network drives.
Applications
- Qualification testing of automotive electronics per ISO 16750-4 (thermal shock, cold soak, heat soak).
- Reliability screening of solder joints and conformal coatings using JEDEC JESD22-A104D-defined profiles.
- Accelerated life testing of lithium-ion battery cells and modules under combined thermal-humidity stress.
- Validation of hermetic seal integrity in MEMS sensors and optical enclosures via moisture ingress simulation.
- Environmental stress screening (ESS) for defense electronics in accordance with MIL-STD-810H Method 503.5.
- Material compatibility studies involving polymer shrinkage, adhesive bond degradation, and elastomer compression set under cyclic extremes.
FAQ
What temperature transition rates are achievable between zones?
Standard two-zone configurations achieve transfer times of ≤15 seconds (mechanical basket transfer) or ≤5 seconds (pneumatic shuttle), depending on chamber size and configuration. Cryogenic-assisted models support transitions from –70°C to +150°C in under 10 seconds.
Can the chamber be integrated into an existing test automation framework?
Yes—native Modbus TCP, RS485, and optional OPC UA drivers enable direct communication with PLCs, LabVIEW, or Python-based test sequencers without middleware.
Is humidity control available across the full temperature range?
Humidity is maintained between +10°C and +85°C at 20–98% RH. Below +10°C, dehumidification is active but RH display is suppressed per IEC 60068-3-5 to avoid condensation misinterpretation.
What calibration documentation is provided upon delivery?
Each unit ships with a factory calibration certificate (traceable to NIST or DAkkS-accredited labs), including temperature/humidity uniformity maps, ramp rate verification reports, and sensor linearity data.
Are custom modifications—such as explosion-proof enclosures or inert gas purging—available?
Yes. ACS offers ATEX/IECEx-certified variants, nitrogen purge interfaces, and bespoke door mechanisms (sliding, bi-parting, or motorized lift) under formal engineering change order (ECO) procedures.
