English Product Name

Overview

The OK-TH Series Vertical Temperature and Humidity Environmental Test Chamber is a precision-engineered climatic simulation system designed for rigorous environmental stress testing of electronic components, automotive modules, aerospace hardware, medical devices, and industrial materials. Based on forced-air convection with dual-stage refrigeration and PID-controlled steam humidification, the chamber delivers stable, repeatable thermal-hygrometric profiles across wide operational ranges. Its vertical architecture optimizes floor space while maintaining structural rigidity and thermal integrity—critical for long-duration tests requiring minimal drift. The system adheres to fundamental thermodynamic principles governing heat transfer, moisture diffusion, and phase equilibrium, enabling accurate replication of real-world environmental exposure conditions defined in international test standards. It is not a generic storage cabinet but a validated test platform engineered for metrological traceability and process repeatability in R&D labs and quality assurance departments operating under GLP or ISO/IEC 17025 frameworks.

Key Features

• Full-color 7-inch capacitive touchscreen controller with real-time graphing, multi-segment programming (up to 99 cycles × 99 steps), and bilingual (English/Chinese) UI—designed for intuitive operation without external software dependency.
• Double-layer high-tensile silicone gasket sealing between door and chamber body ensures leak-tight integrity at extreme low temperatures (down to −70 °C) and high humidity (up to 98 %RH), minimizing condensation ingress and thermal bridging.
• Observation window constructed from triple-layer laminated tempered glass with embedded conductive film heating—prevents fogging and enables unobstructed visual monitoring during sub-zero or high-humidity operation.
• Refrigeration system employs cascaded hermetic compressors using environmentally compliant refrigerants (R404A/R23), optimized for rapid cooling response and low acoustic emission (<65 dB(A) at 1 m).
• Interior and exterior chambers fabricated entirely from electropolished SUS#304 stainless steel—resistant to corrosion, non-outgassing, and compatible with cleanroom-grade maintenance protocols.
• Integrated safety architecture includes over-temperature cut-off, compressor high-pressure shutdown, humidity sensor fault detection, and real-time alarm logging with timestamped event history.

Sample Compatibility & Compliance

The OK-TH chamber accommodates diverse sample geometries via standardized internal dimensions (e.g., OK-TH-408: 60 × 85 × 80 cm W×H×D) and optional accessories—including two adjustable stainless-steel shelves, four leveling casters with locking brakes, and a single 50 mm diameter feedthrough port (left-side mounted) for power/signal cable routing. All models meet essential requirements of MIL-STD-810G Method 502.5 (Low Temperature), Method 501.5 (High Temperature), and Method 507.5 (Humidity), as well as IEC 60068-2 series for climatic testing. They support full audit trails required under FDA 21 CFR Part 11 when paired with optional data-logging software (sold separately), and are routinely validated per IQ/OQ protocols for use in ISO 9001, IATF 16949, and AS9100-certified production environments.

Software & Data Management

While the onboard controller provides autonomous operation, optional PC-based software (OK-Log Pro v3.2) enables remote monitoring, automated report generation (PDF/CSV), and compliance-ready documentation—including calibration certificate templates, deviation logs, and electronic signatures aligned with 21 CFR Part 11 Annex 11 expectations. All temperature and humidity data are sampled at 1-second intervals, stored internally for ≥30 days, and exportable via USB or Ethernet. Audit trail functionality records user login/logout events, parameter modifications, and alarm acknowledgments—ensuring full traceability for regulatory submissions and internal QA audits.

Applications

This chamber supports accelerated life testing, qualification screening, and reliability validation across multiple industries: thermal cycling of PCB assemblies per IPC-9701; moisture sensitivity level (MSL) preconditioning per JEDEC J-STD-020; cold-start performance evaluation of EV battery management systems; stability assessment of pharmaceutical packaging under ICH Q1A(R2) conditions; and aging studies of polymer composites exposed to combined thermal-hygrometric stress. Its uniformity specification (±0.5 °C / ±2.5 %RH) meets the spatial homogeneity criteria required for ASTM D4329 (plastics UV/weathering) and ISO 4892-2 (laboratory light exposure) ancillary conditioning phases.

FAQ

What standards does this chamber comply with?

It conforms to IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-30 (cyclic humidity), GB/T 2423.1–2423.4, and GJB 150.3–150.4. Optional validation packages support ISO/IEC 17025 accreditation.

Can the chamber be customized for non-standard sample sizes?

Yes—custom internal dimensions, additional feedthrough ports, or specialized mounting fixtures are available upon engineering review and quotation.

Is remote monitoring supported out of the box?

Basic Ethernet connectivity is standard; full remote control and cloud-based data streaming require the optional OK-Log Pro software license.

What maintenance is required for long-term reliability?

Quarterly inspection of condensate drain lines, annual refrigerant pressure verification, and biannual recalibration of temperature/humidity sensors using NIST-traceable references are recommended.

Does the system include factory calibration documentation?

Each unit ships with a Certificate of Conformance and a pre-delivery temperature/humidity uniformity report per IEC 60068-3-5. UKAS-accredited calibration certificates are available as an add-on service.