OK-TH-225 Temperature and Humidity Controlled Environmental Test Chamber
| Brand | OEM |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Category | Import |
| Model | OK-TH-225 |
| Price | USD 3,100 (FOB) |
Overview
The OK-TH-225 Temperature and Humidity Controlled Environmental Test Chamber is a precision-engineered climatic test system designed for long-term, stable simulation of defined thermal and hygrometric conditions. It operates on the principle of balanced temperature and humidity control (BTHC), utilizing a dual-loop P.I.D. algorithm to dynamically synchronize heating, refrigeration, humidification, and dehumidification outputs with real-time thermal/hygric load losses—ensuring minimal deviation from setpoints under steady-state and dynamic cycling conditions. Engineered for reliability in R&D validation, quality assurance, and environmental stress screening (ESS), the chamber complies with fundamental requirements for accelerated aging, storage stability assessment, and pre-shipment qualification across electronics, automotive components, pharmaceutical packaging, and polymer materials.
Key Features
- Robust structural design featuring seamless arc-shaped stainless-steel interior and powder-coated steel exterior, optimized for corrosion resistance and ease of cleaning.
- Advanced touch-screen controller with intuitive GUI interface, supporting multi-segment programmable profiles (up to 99 cycles × 99 steps), real-time trend logging, and USB data export.
- Integrated BTHC system employing SSR-controlled heating elements and PID-regulated ultrasonic humidifier, coupled with a capillary-tube-based refrigeration circuit—eliminating mechanical expansion valve hysteresis and improving transient response.
- Comprehensive safety architecture: dry-run protection for humidifier, independent overtemperature cutoff (dual-sensor redundancy), low-water-level alarm, compressor overload/overheat/overcurrent monitoring, high-pressure refrigerant switch, molded-case circuit breaker, and residual-current device (RCD) protection.
- Air circulation via centrifugal blower with adjustable multi-directional vanes ensures uniform temperature distribution (±0.5°C) and humidity homogeneity (±2% RH) throughout the working volume per IEC 60068-3-5.
Sample Compatibility & Compliance
The OK-TH-225 accommodates non-volatile, non-corrosive solid and packaged samples up to 100 kg total mass. Its operational envelope supports standard ESS protocols including temperature cycling (−40°C to +85°C), isothermal humidity exposure (20–98% RH at ≥25°C), and combined temperature-humidity profiles. The chamber meets essential national and international standards: GB/T 2423.1–2023 (Cold Testing), GB/T 2423.2–2023 (Dry Heat), IEC 60068-2-1 (Test A), IEC 60068-2-2 (Test B), GJB 1032A–2021 (Environmental Stress Screening), MIL-STD-2164A (Electronics ESS), and GJB 234–2022 (Quantitative ESS). All performance specifications—including temperature ramp rates (average air change rate, not product core rate), humidity recovery time, and uniformity—are validated under no-load conditions at ambient 25°C ±6°C per ISO/IEC 17025-accredited calibration methodology.
Software & Data Management
The embedded controller firmware supports audit-ready data integrity features compliant with GLP/GMP principles. Event logs record all setpoint changes, alarm triggers, and system status transitions with timestamp and operator ID. Optional PC software enables remote monitoring via Ethernet (Modbus TCP), automated report generation (PDF/CSV), and integration into enterprise LIMS or MES platforms. Full traceability—including electronic signatures, version-controlled firmware updates, and 21 CFR Part 11-compliant user access levels—is available upon configuration.
Applications
- Accelerated life testing of PCB assemblies and semiconductor packages under thermal-hygric stress.
- Stability evaluation of medical device packaging per ISO 11607 and ASTM F1980.
- Material compatibility testing for adhesives, sealants, and elastomers exposed to tropical or desert climate profiles.
- Pre-conditioning of lithium-ion battery cells prior to electrical performance characterization.
- Validation of HVAC component endurance under cyclic condensation and thermal shock conditions.
FAQ
What is the recommended cooling water specification for optimal performance?
Cooling water must be maintained between 10–28°C with pressure regulated at 0.1–0.3 MPa to ensure consistent refrigeration capacity during high-load operation.
Can the chamber’s external dimensions be customized?
Yes—standard external footprint excludes protruding components (e.g., condenser ducts, utility ports); dimensional modifications are feasible subject to structural integrity verification and lead-time adjustment.
Are temperature and humidity ramp rates guaranteed under loaded conditions?
No—rated ramp rates reflect air chamber performance under no-load conditions per ISO 16750-4; actual sample-dependent thermal inertia and moisture buffering will influence achievable transition speeds.
Does the system support compliance with FDA 21 CFR Part 11?
Yes—when equipped with optional validation package and configured with role-based authentication, electronic signatures, and immutable audit trails.
What maintenance intervals are recommended for long-term reliability?
Humidifier tank cleaning every 72 operating hours; refrigerant circuit inspection annually; sensor calibration biannually per ISO/IEC 17025 guidelines.
