English Product Name

Overview

The OK-TH Series Temperature and Humidity Controlled Environmental Test Chamber is an engineered platform for precise, repeatable simulation of climatic stress conditions in laboratory and industrial quality assurance environments. Designed in accordance with the physical principles of convective heat transfer and vapor pressure equilibrium, the chamber maintains stable thermal and hygroscopic profiles through a dual-loop PID-controlled system integrating independent heating, refrigeration, and humidification subsystems. Its robust architecture supports accelerated aging, reliability screening, and environmental qualification testing per internationally recognized standards—including MIL-STD-810G, IEC 60068-2 series, and GB/T 2423—making it suitable for validation of electronic components, automotive modules, medical devices, and packaging materials under controlled temperature and humidity exposure.

Key Features

• Multi-range temperature capability: Selectable configurations spanning −70 °C to +150 °C, enabling low-temperature storage simulation, high-temperature bake-out, and thermal shock profiling.
• Precision humidity control: Standard 20–98 %RH range; optional extended ranges (5–98 %RH or 10–98 %RH) accommodate stringent requirements for pharmaceutical stability studies or polymer conditioning.
• High-fidelity uniformity: Achieves ±0.5 °C temperature uniformity and ±2.5 %RH humidity uniformity across the full working volume—verified via calibrated sensor mapping per IEC 60068-3-5.
• Dual-stage refrigeration system: Utilizes environmentally compliant refrigerants R404A (high-stage) and R23 (low-stage), ensuring stable sub-zero operation without liquid nitrogen dependency.
• Intuitive human-machine interface: 7-inch color LCD touchscreen controller with real-time graphing, multi-segment program editing, and configurable alarm thresholds for over-temperature, under-humidity, or door-open events.
• Structural integrity: Interior and exterior chambers fabricated from electropolished SUS#304 stainless steel; seamless welding minimizes corrosion risk and facilitates ISO 14644-compliant cleaning protocols.

Sample Compatibility & Compliance

The OK-TH chamber accommodates a wide spectrum of sample geometries—from small PCB assemblies to large automotive ECUs—via six standard internal volume options (80 L to 1000 L). Each model includes two adjustable stainless-steel shelves, a single 50 mm diameter cable port with silicone gasket, and leveling casters with locking mechanism. All units are pre-validated against MIL-STD-810G Method 501.6 (High Temperature), Method 502.6 (Low Temperature), and Method 507.5 (Humidity), and support traceable calibration per ISO/IEC 17025 requirements. Optional documentation packages include Factory Acceptance Test (FAT) reports, uncertainty budgets, and compliance matrices aligned with FDA 21 CFR Part 11 data integrity expectations when integrated with validated software platforms.

Software & Data Management

The embedded controller logs timestamped temperature and humidity data at user-defined intervals (1 s to 60 min resolution) into non-volatile memory with automatic rollover. Export is supported via USB flash drive in CSV format for downstream analysis in MATLAB, JMP, or statistical process control (SPC) systems. For networked deployment, optional Ethernet or RS485 interfaces enable integration with centralized monitoring systems (e.g., LabVIEW, Ignition SCADA) and support Modbus TCP/RTU protocols. Audit trail functionality records all parameter changes, user logins, and alarm acknowledgments—meeting GLP/GMP documentation requirements for regulated industries.

Applications

• Electronics reliability testing: Thermal cycling, damp heat exposure, and solder joint fatigue assessment per JEDEC JESD22-A104 and A110.
• Automotive component validation: Climate endurance testing of sensors, infotainment units, and battery management systems per ISO 16750-4.
• Pharmaceutical stability studies: ICH Q1A(R2)-compliant long-term and accelerated storage condition simulation (e.g., 25 °C/60 %RH, 30 °C/65 %RH).
• Material science research: Hygrothermal aging of composites, adhesives, and elastomers to quantify moisture diffusion coefficients and glass transition shifts.
• Quality assurance in manufacturing: In-process environmental stress screening (ESS) and burn-in verification prior to final shipment.

FAQ

What temperature and humidity accuracy specifications apply during continuous operation?

Accuracy is maintained at ±1.5 °C for temperature and ±3 %RH for humidity across the full operating envelope, verified per ASTM E74 for sensor calibration traceability.

Can the chamber be configured for rapid thermal cycling?

While optimized for steady-state stability, the OK-TH series supports programmable ramp rates up to 5 °C/min (heating) and 1.5 °C/min (cooling); for dedicated thermal shock applications, the OK-TS series is recommended.

Is remote monitoring and control supported out of the box?

Standard models include local touchscreen control only; Ethernet or RS485 communication modules are available as factory-installed options with corresponding firmware upgrades.

Does the unit comply with CE or UKCA marking requirements?

Yes—each chamber carries CE marking per EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU; UKCA marking is available upon request with UK-recognized Notified Body assessment.

What maintenance intervals are recommended for optimal performance?

Compressor oil and refrigerant levels should be inspected annually; humidity sensor calibration and chamber seal integrity checks are advised every six months, per preventive maintenance guidelines in the operator manual.