Shaoxing Rapid Temperature Change Environmental Test Chamber – OK-TH Series
| Origin | China (manufactured in Shaoxing) |
|---|---|
| Supplier type | Authorized distributor |
| Import status | Domestic production with international-standard engineering |
| Price | USD 14,000–18,000 (FOB Shaoxing, subject to configuration) |
Overview
The OK-TH Series Rapid Temperature Change Environmental Test Chamber is an engineered solution for accelerated thermal stress screening of electronic components, automotive modules, aerospace subsystems, and medical devices. Designed according to the fundamental principles of thermal shock and temperature cycling—where rapid transitions between extreme thermal boundaries induce differential expansion/contraction in heterogeneous materials—the chamber enables detection of latent defects including interfacial delamination, solder joint fatigue, polymer microcracking, and CTE-mismatch failures. Unlike standard thermal chambers, this system delivers controlled, repeatable ramp rates up to 25 °C/min across a full operational range of −70 °C to +150 °C, with concurrent humidity control (20–98% RH). Its architecture adheres to the physical basis of ISO 16750-4 (road vehicles), IEC 60068-2-14 (temperature change), and MIL-STD-810H Method 503.7 (temperature shock), supporting qualification testing under GLP-compliant laboratory environments.
Key Features
- High-fidelity thermal control: Dual-stage refrigeration system using environmentally compliant R404A/R23 mixed refrigerant and hermetically sealed, low-noise compressors for stable operation across extended cycles
- Programmable ramp rate selection: Discrete or continuous adjustment from 5 °C/min to 25 °C/min, validated per IEC 60068-3-5 and ASTM F1876-08 calibration protocols
- Uniformity-optimized chamber design: SUS#304 stainless steel interior with forced-air convection and multi-point airflow distribution to ensure ±2 °C temperature uniformity and ±3.0% RH uniformity (at ≥75% RH)
- Intuitive human-machine interface: 7-inch color LCD touch controller with real-time graphing, dual-language (English/Chinese) support, and USB data export capability
- Robust structural integrity: Reinforced double-wall insulation, IP54-rated electrical cabinet, and CE-marked power distribution (AC 380 V ±5%, 50 Hz ±0.5 Hz, 3-phase 5-wire)
- Customizable internal volume: Four standard configurations (225 L to 1000 L) with optional dimensional adaptation to accommodate large-format assemblies or fixture-integrated DUTs
Sample Compatibility & Compliance
The OK-TH chamber accommodates a broad spectrum of test specimens—from PCBAs and battery packs to sealed enclosures and optical sensor housings—without requiring modification to native packaging or mounting interfaces. Internal dimensions (e.g., 100 × 100 × 100 cm for OK-TH-1000) allow for multi-unit parallel testing under identical thermal profiles. All models comply with national and international environmental test standards including GB/T 2423.1–2023 (cold), GB/T 2423.2–2023 (dry heat), GB/T 2423.22–2012 (temperature change), GJB 150.3A–2009 (high temperature), GJB 150.4A–2009 (low temperature), and GJB 150.5A–2009 (temperature shock). The system supports traceable validation per ISO/IEC 17025 requirements when paired with third-party accredited calibration services.
Software & Data Management
Embedded controller firmware provides full cycle logging at user-defined intervals (minimum 1-second resolution), storing time-stamped temperature/humidity values, setpoint deviations, alarm events, and compressor runtime. Data export is supported via USB 2.0 in CSV format for post-processing in MATLAB, Python (Pandas), or statistical process control (SPC) platforms. Optional Ethernet connectivity enables remote monitoring and integration into centralized test management systems compliant with IEEE 1621 or LabVIEW-based automation frameworks. Audit trails meet basic FDA 21 CFR Part 11 expectations for electronic records when used in non-GxP R&D settings; full Part 11 compliance requires supplementary validation documentation and role-based access controls.
Applications
- Design verification of consumer electronics subjected to seasonal ambient shifts
- Reliability screening of EV battery modules under simulated charge/discharge thermal transients
- Qualification of avionics enclosures per DO-160 Section 4 (temperature variation)
- Failure analysis root cause isolation in semiconductor packaging (e.g., wire bond lift-off, mold compound cracking)
- Material compatibility assessment for conformal coatings and potting compounds
- Process validation of reflow soldering and adhesive curing parameters
FAQ
What is the maximum achievable ramp rate with full load inside the chamber?
The specified ramp rates (5–25 °C/min) are validated under no-load conditions per IEC 60068-3-5. With typical DUT loading (≤30% internal volume), ramp performance degrades by ≤15%; precise derating depends on thermal mass and emissivity of the test article.
Can the chamber perform combined temperature/humidity cycling per JEDEC JESD22-A104?
Yes—when configured with the optional 5–98% RH range, the OK-TH series supports JEDEC-defined profiles such as “Temp/Humidity Cycling” (THC) with programmable dwell times and transition phases.
Is third-party calibration certification included with delivery?
Factory calibration certificates (traceable to NIM, China) are provided. Full ISO/IEC 17025-accredited calibration must be arranged separately through authorized metrology partners.
Does the controller support script-based test sequencing?
The standard controller supports step-and-hold and linear ramp sequences. Advanced profile scripting (e.g., nested loops, conditional branching) requires optional PC-based software add-on (OK-TestSuite v3.2).
What maintenance intervals are recommended for the refrigeration system?
Compressor oil and filter dryer replacement is advised every 24 months or 8,000 operating hours—whichever occurs first—under normal usage conditions (≤6 hr/day, ambient ≤30 °C).
