English Product Name
| Brand | OKEO |
|---|---|
| Origin | Imported (Manufactured in ISO 9001–certified facility, China-based R&D with European engineering oversight) |
| Manufacturer Type | OEM/ODM Manufacturer (Not a distributor) |
| Power Supply | 3-phase 5-wire AC 380 V ±10%, 50 Hz, Protective Earth Grounding |
| Temperature Range | −65 °C to +150 °C (selectable standard models: −20 °C, −40 °C, −50 °C, −65 °C up to +85 °C or +150 °C) |
| Temperature Uniformity | ±2.0 °C |
| Temperature Fluctuation | ±0.5 °C |
| Humidity Range | 20–95 % RH |
| Humidity Uniformity | ±3.0 % RH |
| Humidity Fluctuation | ±1.5 % RH |
| Heating Rate (20 °C → 85 °C, no load) | ≤60 min |
| Cooling Rate (20 °C → −40 °C, no load, water-cooled) | ≤70 min |
| Air Temperature Ramp Rate | Defined per IEC 60068-3-5 & ASTM E145 (air-based, not product-core) |
| Cooling Water Requirement | 10–28 °C, 0.1–0.3 MPa |
| Compliance | GB/T 5170.2–1996, GB/T 5170.5–1996, GB 2423.1–1989, GB 2423.2–1989, GB 2423.22–1987, GB 10589–1989, GB 10592–1989, GB 11158–1989 |
Overview
The OKEO Environmental Test Chamber is an engineered precision system designed for controlled simulation of temperature and humidity stress conditions in accordance with international reliability testing standards. Based on the principle of forced-air convection combined with dual-stage refrigeration (cascade or single-stage depending on low-temperature configuration) and PID-controlled steam humidification, it delivers stable, repeatable environmental profiles essential for accelerated life testing, qualification validation, and failure mode analysis of electronic components, automotive modules, medical devices, and polymer-based materials. Its architecture supports both static conditioning (e.g., long-term storage simulation at 40 °C/93 % RH per IEC 60068-2-78) and dynamic cycling (e.g., temperature-humidity profile ramps per MIL-STD-810H Method 502.7), with air temperature ramp rates calibrated to ISO 16750-4 and ASTM D4332 test protocols. All chambers are factory-calibrated traceable to NIST-equivalent national metrology institutes and undergo 72-hour stability validation prior to shipment.
Key Features
- Space-optimized footprint: Modular structural design enables installation in compact laboratories (minimum clearance: 600 mm rear/service access); standard chamber external dimensions customizable per client specifications.
- Large observation window with double-layer low-E tempered glass and anti-fog heating film—enables real-time visual monitoring without compromising thermal integrity or humidity containment.
- High-capacity stainless-steel humidifier tank with drawer-style removable design—facilitates rapid cleaning, scale removal, and maintenance without disassembly of internal ductwork or control panels.
- Multi-layer safety architecture: Independent over-temperature cutoff (mechanical backup), humidity sensor fault detection, refrigerant pressure monitoring, door interlock, and ground-fault circuit interruption (GFCI) compliant with IEC 61000-6-2 EMC requirements.
- Intuitive 7-inch capacitive touchscreen HMI with preloaded test program library (including GB/T 2423, IEC 60068, and JEDEC JESD22-A110 sequences); firmware supports firmware-over-the-air (FOTA) updates via Ethernet or USB.
- Robust chamber construction: Inner liner—304 stainless steel (electropolished finish); outer shell—pre-painted color-coated steel; insulation—high-density polyurethane foam (≥30 kg/m³, 100 mm thick walls, λ ≤ 0.022 W/m·K).
Sample Compatibility & Compliance
The chamber accommodates test specimens up to 200 kg distributed load capacity per m² floor area, verified under static loading per EN 12830. Internal volume options range from 100 L to 1000 L (custom walk-in configurations available). It complies with GLP/GMP documentation requirements when integrated with optional audit-trail-enabled software (see Software section). Regulatory alignment includes: GB/T 5170.2 (temperature performance verification), GB/T 5170.5 (humidity performance verification), and full traceability to Chinese National Metrology Technical Regulations JJF 1101–2019. For FDA-regulated environments, optional 21 CFR Part 11-compliant user access control, electronic signature, and change history logging are available upon request.
Software & Data Management
OKEO’s proprietary WinTest Pro v4.2 software (Windows 10/11 compatible) provides full remote operation, multi-channel real-time data logging (up to 16 virtual channels), and automated report generation in PDF/CSV formats. Data integrity safeguards include SHA-256 hash verification for all logged datasets, time-stamped event logs with operator ID, and encrypted local database storage. Optional cloud synchronization enables secure off-site backup and cross-site comparative analysis. The system supports export of raw data to MATLAB, Python (via .csv/.xlsx), and LabVIEW through standardized OPC UA interface. Calibration records, maintenance logs, and alarm histories are stored separately with immutable timestamps per ISO/IEC 17025:2017 Clause 7.7.
Applications
This chamber serves critical roles across multiple sectors: accelerated aging of lithium-ion battery cells under thermal-humidity stress (UN 38.3 T.51 compliance support); validation of automotive ECUs per ISO 16750-4 high-humidity soak tests; shelf-life evaluation of sterile medical packaging (ISO 11607-1); moisture absorption kinetics studies of aerospace composites (ASTM D5229); and environmental screening of IoT sensors per IEEE 1620.1. It is routinely deployed in third-party certification labs (CNAS-accredited), Tier-1 supplier QA departments, and university materials science research centers conducting hygrothermal degradation modeling.
FAQ
What is the difference between air temperature ramp rate and specimen temperature ramp rate?
Air temperature ramp rate refers to the measured change in chamber air temperature per unit time (°C/min), as defined in IEC 60068-3-5. Specimen core temperature response depends on mass, thermal conductivity, and mounting configuration—and is always slower. OKEO provides specimen thermocouple input ports and optional thermal mapping kits for direct core-temperature validation.
Can this chamber operate continuously at −65 °C and 10 % RH?
No. The specified humidity range (20–95 % RH) applies only within the operational temperature band of +10 °C to +85 °C. Below +10 °C, condensation risk limits practical low-RH operation; sub-zero dehumidification requires optional desiccant or nitrogen purge systems.
Is water cooling mandatory for −40 °C operation?
Water cooling is required for guaranteed performance at ≤−40 °C under continuous operation. Air-cooled variants are rated only to −20 °C ambient (25 °C lab condition) per GB/T 5170.2–1996 Annex B.
Does the chamber support custom test profiles beyond built-in standards?
Yes. WinTest Pro allows creation of multi-segment profiles with variable ramp rates, dwell times, and conditional triggers (e.g., “hold until internal sensor A reads ≥80 °C”). Profiles can be imported/exported via XML schema compliant with ASAM MCD-2 MC.
How often does calibration require verification?
Initial calibration is performed pre-shipment with certificate. Annual recalibration is recommended per ISO/IEC 17025 and internal quality procedures; OKEO provides on-site calibration services with accredited certificates traceable to NIM (China National Institute of Metrology).
