English Product Name

Overview

The OK-STH Series Walk-In Environmental Chamber is a precision-engineered climatic test system designed for full-scale environmental simulation of large components, subassemblies, and finished products under controlled temperature and humidity conditions. Based on thermodynamic equilibrium principles and dual-stage refrigeration cycle architecture, it enables rigorous evaluation of thermal stress response, condensation resistance, material dimensional stability, and long-term reliability across extreme ambient transitions. This chamber meets the functional requirements of IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), IEC 60068-2-30 (Damp Heat, Cyclic), and ASTM D4332—standards widely referenced in electronics qualification, automotive component validation, and aerospace ground support testing. Its walk-in configuration supports testing of oversized units—including server racks, medical imaging systems, photovoltaic modules, and avionics enclosures—that exceed the dimensional limits of benchtop chambers.

Key Features

• Modular insulated chamber construction using high-density polyurethane (PU) panels with stainless steel cladding (SUS304) and seamless welded joints for optimal thermal integrity and corrosion resistance.
• Dual-stage refrigeration system featuring parallel compressors from European and U.S.-based OEMs (e.g., Bitzer, Copeland), utilizing environmentally compliant R-404A/R-23 cascade refrigerant blends to ensure stable operation across −70 °C to +120 °C.
• Horizontal air distribution via centrifugal circulation fans with vertical heat exchange ducting—engineered to maintain ±0.5 °C temperature uniformity and ±2.0% RH homogeneity per IEC 60068-3-5 across the entire working volume.
• IPC1000 programmable logic controller with 7-inch LCD touchscreen interface supporting English, Chinese, and Korean language options; compliant with IEC 61131-3 programming standards.
• Integrated safety architecture including over-temperature cut-off, compressor high-pressure shutdown, door interlock circuitry, and real-time fault diagnostics with 9-point alarm mapping and auto-power isolation.
• RS-232/RS-485 serial communication port with optional Ethernet module (Modbus TCP/IP) for integration into centralized lab management systems and LIMS environments.

Sample Compatibility & Compliance

The OK-STH accommodates test specimens up to 100 m³ in volume, making it suitable for full-system validation of telecom base stations, EV battery packs, industrial control cabinets, and military-grade electronic enclosures. It supports compliance-driven test profiles required by MIL-STD-810H Method 502.7 (Low Temperature), Method 503.7 (Temperature Shock), and Method 507.6 (Humidity). All models are designed for GLP/GMP-aligned operation, with audit-ready data logging (timestamped, user-ID tagged), electronic signature capability (via optional FDA 21 CFR Part 11-compliant software add-on), and traceable calibration certificate support per ISO/IEC 17025 guidelines.

Software & Data Management

The embedded IPC1000 controller stores up to 30 multi-step test programs (800 segments, 999 cycles), each configurable with ramp/soak profiles, humidity coupling logic, and conditional branching. Real-time trend graphs of chamber setpoints and sensor feedback are displayed dynamically on-screen. Data export is supported via USB or serial link in CSV format for post-processing in MATLAB, Python (Pandas), or JMP. Optional PC-based software (OK-LogSuite v3.2) provides remote monitoring, automated report generation (PDF/Excel), event-triggered email alerts, and secure role-based access control—fully compatible with enterprise IT infrastructure and network time protocol (NTP) synchronization.

Applications

• Electronics reliability assessment: Thermal cycling of PCBAs, OLED displays, fiber optic transceivers, and Li-ion battery modules per JEDEC JESD22-A104 and A119 standards.
• Automotive component qualification: Climate endurance testing of ADAS ECUs, infotainment head units, and powertrain control modules per ISO 16750-4.
• Medical device verification: Environmental stress screening of diagnostic imaging consoles, infusion pumps, and sterilization equipment under IEC 60601-1 Clause 11.
• Renewable energy system validation: Long-duration damp heat exposure of solar inverters and charge controllers per IEC 61215-2 MQT 10.
• Materials science research: Accelerated aging studies of polymer composites, conformal coatings, and adhesive bonds under combined thermal-hygrometric loading.

FAQ

What is the standard lead time for custom volume configurations?
Standard delivery for non-customized 10–20 m³ units is 8–10 weeks; volume-specific structural modifications extend lead time by 3–5 weeks depending on panel fabrication and refrigeration recalibration requirements.
Can the chamber be validated to IQ/OQ protocols?
Yes—factory-installed NIST-traceable PT100 sensors (Class A tolerance) and pre-validated installation qualification (IQ) documentation are provided; operational qualification (OQ) templates aligned with ASTM E2500-23 are available upon request.
Is remote firmware update supported?
Firmware updates require local USB-based upload via administrator-level access; no over-the-air (OTA) capability is implemented for security and regulatory compliance reasons.
What maintenance intervals are recommended for the refrigeration system?
Compressor oil analysis and filter-drier replacement every 24 months; full refrigerant loop leak inspection and pressure decay testing annually per ISO 5149-2.
Does the system meet CE marking requirements for EU deployment?
Yes—all electrical, mechanical, and EMC subsystems comply with Directive 2014/30/EU (EMC), 2014/35/EU (LVD), and EN 61000-6-2/6-4; CE Declaration of Conformity is supplied with shipment.