OKEO Environmental Test Chamber for Socket-Type Electrical Components – Temperature and Humidity Controlled Chamber

Overview

The OKEO Environmental Test Chamber for Socket-Type Electrical Components is a precision-engineered temperature and humidity controlled chamber designed specifically for accelerated environmental stress testing of electrical connectors, plug-in modules, PCB-mounted sockets, and other interface-critical electronic components. Based on the principle of forced-air convection with dual independent refrigeration and humidification systems, the chamber delivers stable, reproducible climatic conditions across wide operational ranges. Its architecture complies with fundamental thermal and hygrometric control requirements defined in IEC 60068-3-5 (methods for determining change rates), ISO 16750-4 (road vehicles—environmental conditions), and JEDEC JESD22-A104 (temperature cycling). The chamber is engineered for long-term reliability under continuous operation, supporting both steady-state conditioning and programmed ramp-and-soak profiles essential for qualification testing per MIL-STD-810H and automotive AEC-Q200 standards.

Key Features

• Socket-optimized internal geometry: Removable stainless-steel shelf system with standardized mounting rails and cable access ports to accommodate DIN-rail, PCB-mount, and high-density socket assemblies without airflow obstruction.
• Dual-stage cascade refrigeration system enabling extended low-temperature capability down to –120 °C, with automatic defrost and condensate management for uninterrupted humidity stability.
• High-accuracy capacitive humidity sensor with NIST-traceable calibration certificate (included), integrated with PID-controlled steam generator and desiccant-assisted dehumidification for precise RH regulation between 5% and 98% RH.
• TEMI880 color touchscreen controller featuring 128 MB non-volatile memory, USB data export, real-time trend graphing, and up to 100 programmable test cycles with 99 segments per cycle.
• Compliance-ready firmware: Audit trail logging, user-level access control (admin/operator/guest), password protection, and optional 21 CFR Part 11-compliant electronic signature module for regulated industries.
• Structural integrity: Inner chamber constructed from mirror-finished SUS304 stainless steel (thickness ≥1.2 mm); outer casing available in corrosion-resistant stainless steel or electrostatically coated A3 steel for laboratory or industrial floor environments.

Sample Compatibility & Compliance

This chamber supports testing of socket-type devices including but not limited to: PCIe edge connectors, SATA power/data sockets, automotive FAKRA/HSD connectors, server DIMM slots, and industrial M12/M8 receptacles. Load capacity is configurable based on airflow clearance requirements (minimum 100 mm clearance around samples recommended). All performance specifications—including temperature uniformity (±0.5 °C), humidity deviation (≤±2.5% RH), and ramp rates—are verified per GB/T 5170.2–2017 (equivalent to IEC 60068-3-5) and GB/T 5170.5–2017 (equivalent to IEC 60068-3-6) under no-load, ambient 25 °C ±6 °C conditions. Optional validation packages include IQ/OQ documentation templates aligned with ISO/IEC 17025 and GLP guidelines.

Software & Data Management

The TEMI880 controller provides native Ethernet and RS485 interfaces for integration into centralized lab monitoring networks. Raw temperature and humidity data are logged at user-selectable intervals (1–600 seconds) with timestamped CSV export via USB flash drive. Optional PC-based software (OKEO-EnvLog Pro) enables remote supervision, multi-chamber synchronization, alarm escalation via email/SMS, and automated report generation compliant with ISO/IEC 17025 clause 7.8. Data integrity safeguards include cyclic redundancy check (CRC), write-protection for historical logs, and tamper-evident file hashing. For pharmaceutical or medical device applications, optional FDA 21 CFR Part 11 add-on provides electronic signatures, role-based permissions, and full audit trail retention for ≥36 months.

Applications

• Qualification testing of electrical sockets under thermal shock (GB/T 2423.22), high/low temperature storage (GB/T 2423.1 & 2423.2), and damp heat cycling (GB/T 2423.3 & 2423.4).
• Reliability assessment of contact resistance drift during prolonged exposure to 85 °C/85% RH (JEDEC JESD22-A101), 40 °C/93% RH (IEC 60068-2-78), or sub-zero thermal cycling.
• Material compatibility screening for insulator polymers, plating adhesion, and solder joint integrity under combined thermal-hygrometric stress.
• Process validation support for conformal coating curing, potting compound outgassing, and connector lubricant stability studies.
• Environmental stress screening (ESS) in incoming QC labs prior to board-level assembly or final system integration.

FAQ

What is the standard calibration interval for this chamber?

Annual calibration is recommended per ISO/IEC 17025; factory calibration certificates (traceable to NIM) are provided with each unit. On-site recalibration services are available upon request.

Can the chamber be integrated with existing MES or LIMS platforms?

Yes—via Modbus TCP or OPC UA protocol through the optional communication module. API documentation and driver libraries are supplied for LabVIEW, Python, and MATLAB integration.

Is cooling water required for operation?

Water-cooled condensers are standard for models with ≤–40 °C capability. Required inlet water temperature: 10–28 °C; pressure: 0.1–0.3 MPa. Air-cooled variants are available for milder temperature ranges.

Does the chamber support custom test profiles beyond preloaded standards?

Absolutely—the TEMI880 supports user-defined multi-segment profiles with independent ramp rates, dwell times, and conditional triggers (e.g., “hold until RH reaches 90%” or “initiate cooldown after 4 h”).

What safety certifications does the chamber carry?

CE marking (EMC & LVD directives), RoHS compliance, and optional UL/cUL listing (per UL 61010-1) are available upon configuration selection. Full technical files and DoC are provided with shipment.