Combined Temperature-Humidity-Vibration Environmental Test System – OK-ES Series by OEM Manufacturer

Overview

The OK-ES Series Combined Temperature-Humidity-Vibration Environmental Test System is an integrated triaxial-capable (vertical + horizontal) electrodynamic vibration test platform engineered for rigorous environmental simulation in compliance with IEC 60068-2-6, ISO 16750-3, MIL-STD-810H Method 514.8, and automotive OEM-specific vibration protocols (e.g., GM W3177, Ford CS-2009.1). Unlike single-stress chambers, this system synchronizes controlled thermal cycling (−70 °C to +180 °C), humidity conditioning (10–98% RH), and high-fidelity sinusoidal vibration within a single sealed chamber—enabling realistic replication of transport, storage, and operational stress profiles experienced by automotive ECUs, avionics modules, battery packs, and industrial electronics. Its core actuator employs a force-cooled moving-coil shaker with closed-loop acceleration feedback, delivering stable 20 g peak acceleration across the full 1–5000 Hz bandwidth while maintaining ≤±0.1 Hz frequency resolution and real-time spectral integrity per ANSI S2.63.

Key Features

• Triple-stress integration: Simultaneous temperature, humidity, and dual-axis vibration in one chamber—eliminating sequential test artifacts and inter-chamber transfer errors
• High-resolution programmable controller: Supports 15-segment sine profiles with user-defined frequency, dwell time, amplitude ramping, and loop count; all parameters adjustable to 0.01 Hz resolution
• Dual-axis synchronization: Independent vertical and horizontal shakers coordinated via master-slave timing architecture to replicate multi-directional road-induced excitation
• Robust mechanical architecture: Reinforced stainless steel chamber structure with vacuum-tight seals, low-thermal-mass insulation, and vibration-isolated base frame meeting ISO 10816-3 foundation requirements
• Real-time monitoring interface: On-screen display of actual vs. setpoint acceleration (g), displacement (mm p-p), frequency (Hz), chamber temperature (°C), and relative humidity (%RH) with configurable alarm thresholds
• Compliance-ready data output: Time-synchronized CSV/Excel logs with timestamp, channel ID, and measurement units—formatted for audit trails under ISO/IEC 17025 and FDA 21 CFR Part 11 (when paired with validated software)

Sample Compatibility & Compliance

The system accommodates test specimens up to 100 kg on a standard 50 × 50 cm aluminum table (custom tables available per MIL-STD-1377 mounting patterns). Chamber internal dimensions support DUTs up to 45 × 45 × 45 cm with unobstructed airflow and sensor access ports. All thermal/humidity subsystems conform to IEC 60068-3-5 (humidity generation) and IEC 60068-3-6 (temperature stabilization). Vibration performance is verified per ISO 10816-1 for machinery vibration severity and ASTM D999 for packaged-product transport simulation. Optional third-party calibration certificates (NIST-traceable accelerometers, PT100 sensors) are available to satisfy GLP/GMP validation requirements.

Software & Data Management

Control and analysis are executed via OK-ES VTS Pro v4.2—a Windows-based application supporting test definition, remote operation, live spectrum visualization, and post-test FFT analysis. The software includes built-in templates aligned with common standards (e.g., “Automotive Component Road Simulation”, “Aerospace Equipment Transport Profile”). All test sequences are digitally signed and archived with immutable metadata (operator ID, system ID, calibration expiry date). Audit trail functionality records every parameter change, start/stop command, and alarm event—including user login/logout timestamps—meeting 21 CFR Part 11 electronic record requirements when deployed with Windows Active Directory authentication and encrypted database storage.

Applications

• Validation of automotive ADAS sensors under combined thermal shock and road-frequency vibration (e.g., 10–200 Hz resonance sweeps at −40 °C)
• Reliability screening of lithium-ion battery modules subjected to humidity cycling (85 °C/85% RH) while vibrating at 15–55 Hz to accelerate electrolyte micro-leakage
• Qualification testing of medical imaging subsystems per IEC 60601-1-11 for home-use durability under simulated delivery logistics
• Pre-compliance screening of industrial IoT gateways exposed to railway freight profiles (EN 50125-3) with simultaneous condensation risk assessment
• Physics-of-failure studies on solder joint fatigue in PCBAs using resonant dwell tests at harmonic frequencies identified via modal analysis

FAQ

Does the system support random vibration or only sine waveforms?
This OK-ES Series model is configured exclusively for high-precision sinusoidal vibration. Random, shock, or transient waveform capabilities require the OK-ES R-Series variant with broadband amplifier and digital signal processor.
Is humidity control compatible with active vibration below 0 °C?
Yes—the chamber uses a dual-stage refrigeration system with hot-gas bypass and steam humidification optimized for sub-zero dew point operation during concurrent vibration.
Can I export raw acceleration time-history data for external FFT processing?
Yes—VTS Pro exports .tdms and .csv files containing synchronized time-series data from all analog input channels at user-selectable sampling rates up to 51.2 kHz.
What documentation is provided for IQ/OQ/PQ validation?
Standard delivery includes Factory Acceptance Test (FAT) report, installation checklist, and user manual. Custom IQ/OQ protocols (per GAMP 5) and PQ execution support are available as optional services.
Is preventive maintenance covered under the 1-year warranty?
The warranty covers parts and labor for defects in materials/workmanship. Preventive maintenance (e.g., coil alignment verification, refrigerant recharge, sensor recalibration) is scheduled separately per the recommended 6-month service interval.