OK-TH Series Customizable High-Low Temperature & Humidity Environmental Test Chamber

Overview

The OK-TH Series High-Low Temperature & Humidity Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of electronic components, automotive modules, aerospace subsystems, and industrial materials. Based on the principle of controlled thermodynamic cycling and saturated vapor pressure regulation, the chamber precisely replicates real-world climatic exposure conditions—including extreme cold, high-temperature bake, and cyclic humidity loading—to evaluate product reliability, material integrity, and long-term functional stability. Designed to meet the stringent operational demands of ISO/IEC 17025-accredited laboratories and R&D centers, it supports deterministic qualification per military, automotive (e.g., AEC-Q200), and industrial standards. Its modular architecture enables full customization of internal volume, temperature/humidity range, ramp profiles, and interface configurations—ensuring alignment with unique test protocols and specimen geometries.

Key Features

• Full-color 7-inch resistive touchscreen controller with intuitive HMI, supporting real-time parameter monitoring, multi-step program editing, and bilingual (English/Chinese) operation.
• Dual-stage refrigeration system using environmentally compliant R404A/R23 mixed refrigerant, enabling stable operation down to -70 °C without liquid nitrogen assistance.
• SUS#304 stainless steel interior and exterior construction—welded seams, electropolished finish—resistant to corrosion from condensate, salt mist, and organic solvents.
• Multi-layer observation window with integrated ITO (indium tin oxide) heating film prevents fogging and ensures unobstructed visual inspection during low-temperature or high-humidity cycles.
• High-seal dual-gasket door design featuring high-tensile silicone rubber gaskets rated for continuous use between -70 °C and +150 °C.
• Standard 50 mm diameter feedthrough port (left-side mounted), compatible with shielded signal cables, thermocouple leads, or power feeds up to 300 V AC/DC.
• Comprehensive safety architecture including over-temperature cutoff, compressor high-pressure shutdown, phase-loss detection, and real-time fault logging with audible/visual alerts.

Sample Compatibility & Compliance

The OK-TH chamber accommodates a broad spectrum of test specimens—from PCB assemblies and lithium-ion battery packs to polymer housings and optical sensors—without requiring fixture modification. Internal dimensions are scalable from 80 L to 1000 L, with optional reinforced shelves, adjustable leveling feet, and castor wheels for facility mobility. All models comply with internationally recognized environmental test standards, including MIL-STD-810G Method 502.5 (Low Temperature), Method 501.6 (High Temperature), Method 507.5 (Humidity), and IEC 60068-2-30 (Damp Heat, Cyclic). For regulated industries, the controller supports audit-ready data logging with timestamped records, user-access levels, and optional password-protected calibration lockout—facilitating GLP/GMP traceability and FDA 21 CFR Part 11 readiness when paired with validated software.

Software & Data Management

The embedded controller stores up to 100 programmable test profiles, each supporting up to 99 segments with independent ramp/soak settings for temperature and humidity. Real-time data—including chamber setpoints, actual readings, alarm status, and compressor runtime—is logged at user-selectable intervals (1 s to 60 min) and exportable via USB 2.0 to CSV format. Optional PC-based software (OK-Link v3.2) enables remote monitoring, multi-chamber synchronization, statistical process control (SPC) charting, and automated report generation compliant with ISO/IEC 17025 Annex A.5 requirements. All firmware updates are delivered via signed binary packages to ensure system integrity and version control.

Applications

• Electronics: Thermal cycling validation of solder joints, conformal coating performance, and capacitor derating under combined thermal/humidity stress.
• Automotive: Climate chamber testing per ISO 16750-4 for ECUs, infotainment systems, and ADAS sensors under rapid temperature transitions.
• Aerospace: Component qualification per RTCA DO-160 Section 4 (Temperature), Section 5 (Altitude), and Section 10 (Humidity).
• Materials Science: Hygrothermal aging studies of composites, adhesives, and elastomers per ASTM D5229/D570.
• Medical Devices: Environmental stress screening of Class II/III devices prior to biocompatibility or sterilization validation.

FAQ

What temperature and humidity ranges are available as standard configurations?

Four standard temperature tiers are offered: 0–150 °C, -20–150 °C, -40–150 °C, and -70–150 °C. Humidity range is 20–98 %RH as standard; extended ranges (5–98 %RH or 10–98 %RH) are available as factory-installed options.

Can the chamber be integrated into an existing lab automation system?

Yes—RS-485 Modbus RTU and Ethernet TCP/IP interfaces are standard. Optional analog I/O (4–20 mA, 0–10 V) and dry-contact alarm outputs support PLC-level integration and SCADA connectivity.

Is third-party calibration certification included with shipment?

Each unit ships with a factory calibration certificate traceable to NIST-equivalent national metrology institutes. UKAS or DAkkS-accredited calibration services are available upon request.

What maintenance intervals are recommended for optimal performance?

Compressor oil and filter replacement every 24 months; refrigerant leak check annually; door gasket inspection and cleaning quarterly; controller firmware update verification semiannually.

Does the system support custom test profiles required by proprietary industry specifications?

Absolutely—the controller allows fully user-defined ramp rates, dwell times, humidity modulation patterns, and conditional branching logic—enabling direct implementation of customer-specific test plans without external scripting.