OK-TH Series Precision Temperature and Humidity Controlled Environmental Test Chamber
| Brand | OK |
|---|---|
| Model Range | OK-TH-80 / OK-TH-150 / OK-TH-225 / OK-TH-408 / OK-TH-800 / OK-TH-1000 |
| Internal Dimensions (W×H×D, cm) | 40×50×40 to 100×100×100 |
| External Dimensions (W×H×D, cm) | 100×165×100 to 180×200×180 |
| Temperature Range Options | 0–150°C / −20–150°C / −40–150°C / −70–150°C |
| Humidity Range | 20–98% RH (optional: 5–98% RH or 10–98% RH) |
| Temperature Uniformity | ±0.5°C |
| Humidity Uniformity | ±2.5% RH |
| Temperature Fluctuation | ±2.0°C |
| Humidity Fluctuation | +2–3% RH |
| Resolution | 0.1°C / 0.1% RH |
| Heating Rate | ~4.0°C/min |
| Cooling Rate | ~1.0°C/min |
| Refrigeration System | Hermetically sealed, low-noise dual-stage compressor with eco-friendly refrigerants R404A/R23 |
| Controller | LCD touch-screen interface with bilingual (English/Chinese) operation |
| Construction Material | SUS#304 stainless steel interior and exterior |
| Standard Accessories | One Φ50 mm cable port, two adjustable SUS#304 shelves, four casters + four leveling feet |
| Power Supply | AC 380 V ±5%, 50 Hz ±0.5 Hz, 3-phase 5-wire, 2.5 m cable |
| Compliance | MIL-STD-810G (Method 501.6, 502.6), IEC 60068-2-1 (Cold), IEC 60068-2-2 (Dry Heat), IEC 60068-2-30 (Damp Heat, Cyclic), IEC 60068-2-78 (Damp Heat, Steady State), GB/T 2423.1–2001, GB/T 2423.2–2001, GB/T 2423.4–1993, GJB 150.3–1986, GJB 150.4–1986 |
Overview
The OK-TH Series Precision Temperature and Humidity Controlled Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of materials, components, and finished products under rigorously controlled thermal and hygrometric conditions. Based on the principle of forced-air convection combined with precision PID-controlled refrigeration and steam-based humidification, this chamber delivers stable, repeatable, and traceable environmental profiles required for qualification, reliability screening, and compliance verification across aerospace, automotive, electronics, pharmaceutical, and quality assurance laboratories. Its modular design supports customization of internal volume (from 80 L to 1000 L), extended temperature extremes (down to −70°C), and enhanced humidity resolution (as low as 5% RH), enabling full alignment with both legacy and emerging international test standards.
Key Features
- Multi-range temperature capability: Four standard configurations available (0–150°C, −20–150°C, −40–150°C, and −70–150°C), each validated for continuous operation at specified extremes.
- High-fidelity humidity control: Standard 20–98% RH range; optional extended ranges (5–98% RH or 10–98% RH) enabled by calibrated ultrasonic humidifier and precision dehumidification via cold trap and hot-gas bypass.
- Thermal stability architecture: Dual-stage hermetic compressors using environmentally compliant R404A/R23 refrigerant blends ensure low acoustic emission (<65 dB(A)) and long-term operational integrity.
- Intuitive human-machine interface: 7-inch color LCD touchscreen controller with real-time graphing, programmable multi-step profiles, alarm history logging, and seamless English/Chinese language switching.
- Robust mechanical construction: Fully welded SUS#304 stainless steel interior and exterior panels, non-porous insulation, and reinforced door gasketing minimize thermal leakage and condensation risk.
- Comprehensive utility integration: Standard Φ50 mm cable port with silicone plug, two height-adjustable stainless steel shelves, industrial-grade casters with locking brakes, and independent leveling feet for floor stability.
Sample Compatibility & Compliance
The OK-TH chamber accommodates a broad spectrum of sample geometries and mass loads—ranging from PCB assemblies and polymer films to medical device packaging and lithium-ion battery modules—without compromising uniformity or control fidelity. Internal airflow is optimized via rear-mounted centrifugal fans and directional ducting to maintain ±0.5°C temperature uniformity and ±2.5% RH humidity uniformity across the entire working volume, per IEC 60068-3-5 requirements. All models are factory-verified against MIL-STD-810G, IEC 60068-2 series, and corresponding GB/T and GJB national standards. Optional calibration certificates (NIST-traceable) and IQ/OQ documentation packages support GLP, GMP, and ISO/IEC 17025 laboratory accreditation processes.
Software & Data Management
The embedded controller supports up to 100 programmable test cycles, each with up to 99 segments—including ramp, soak, and dwell phases—with independent setpoint control for temperature and humidity. Real-time data logging records temperature, humidity, elapsed time, and system status at user-defined intervals (1 s to 60 min). Exportable CSV files facilitate post-test analysis in MATLAB, Excel, or LIMS platforms. For regulated environments, optional PC-based software enables 21 CFR Part 11-compliant user access control, electronic signatures, and full audit trail functionality—including operator ID, timestamped parameter changes, and alarm event sequencing.
Applications
- Electronics reliability: Thermal cycling, damp heat storage, and humidity ingress evaluation per JEDEC JESD22-A101 and IPC-9701.
- Automotive component validation: Climate endurance testing of sensors, connectors, and infotainment systems per ISO 16750-4 and SAE J2334.
- Pharmaceutical stability: ICH Q1A(R2)-aligned long-term and accelerated stability studies under controlled temperature/humidity conditions.
- Materials science: Hygrothermal aging of composites, adhesives, and coatings to assess dimensional stability, delamination resistance, and mechanical property degradation.
- Quality assurance: In-process environmental stress screening (ESS) and burn-in protocols for production line release verification.
FAQ
What is the standard warranty coverage for the OK-TH Series chamber?
All units include a 24-month parts-and-labor warranty from date of commissioning, covering refrigeration system, controller electronics, and structural integrity.
Can the chamber be integrated into an existing facility monitoring network?
Yes—RS485 Modbus RTU and optional Ethernet TCP/IP interfaces enable SCADA integration and remote supervision via BMS or centralized lab management platforms.
Is third-party calibration and certification available prior to delivery?
Absolutely. NIST-traceable calibration reports, ISO/IEC 17025-accredited verification, and full IQ/OQ documentation can be arranged pre-shipment upon request.
Are custom internal dimensions or special environmental profiles supported?
Yes. Engineering consultation is provided for non-standard volume requirements, unique thermal-hygrometric profiles (e.g., rapid transition ramps), and specialized accessory integration (e.g., additional ports, internal lighting, or load power supply).
Does the chamber meet FDA or EU MDR requirements for medical device testing?
While the chamber itself is not a medical device, its performance characteristics and data integrity features fully support compliance with FDA 21 CFR Part 11 and EU MDR Annex I essential requirements for environmental validation testing.
