OK-ZTH-408 Combined Temperature-Humidity-Vibration Environmental Test Chamber

Overview

The OK-ZTH-408 Combined Temperature-Humidity-Vibration Environmental Test Chamber is an engineered solution for accelerated reliability testing of electronic components, automotive modules, aerospace subsystems, and industrial control units under synchronized multi-stress conditions. It integrates three independent environmental stress domains—thermal (−70 °C to +150 °C), hygric (30–98% RH), and dynamic mechanical (electromagnetic vibration, 2–500 Hz)—within a single, rigorously sealed chamber architecture. Unlike sequential or single-stress test methods, this tri-combined approach replicates real-world operational degradation mechanisms such as solder joint fatigue, polymer creep under thermal cycling, condensation-induced corrosion, and resonance-driven microcrack propagation—enabling early failure mode identification per MIL-STD-810H, IEC 60068-2, and JEDEC JESD22-A104/A110 protocols.

Key Features

• Stainless steel interior chamber with reinforced structural integrity, resistant to corrosion and thermal expansion mismatch over extended thermal cycling.
• Electromagnetic shaker interface with flexible coupling membrane, supporting both retrofit integration with existing vibration tables and standalone operation with integrated actuator.
• High-efficiency refrigeration system featuring dual-stage cascade design (R404A/R507), compressor thermal protection logic, and low-power standby mode to reduce energy consumption by up to 22% versus conventional systems.
• Dual-path humidification system with inline water filtration (5 µm particulate removal) and auto-drain cycle to prevent mineral deposition and ensure long-term RH stability and repeatability.
• Programmable touchscreen controller with USB Smart Stick support for secure offline data logging, profile backup, alarm history export, and firmware updates without network exposure.
• Redundant safety architecture including independent high-limit temperature sensors, pressure-activated refrigerant shut-off valves, and hardware-level emergency power cutoff.
• Standard 3-inch diameter cable port with silicone gasket seal, rated IP54 for external instrumentation interfacing while maintaining chamber integrity.

Sample Compatibility & Compliance

The OK-ZTH-408 accommodates test specimens up to 408 L internal volume (W×D×H: 800 × 800 × 640 mm), with adjustable mounting rails and non-conductive isolation platforms compatible with PCB assemblies, ECUs, battery packs, and sensor housings. Its design conforms to multiple international test standards including GB/T 2423.1–2423.10 (China), IEC 60068-2-1, -2, -14, -30, -64, and ISO 16750-4 for road vehicle environmental conditions. Calibration traceability follows GB/T 5170.2 (temperature) and GB/T 5170.5 (humidity), with optional NIST-traceable certificate reporting. The chamber supports GLP-compliant audit trails when paired with validated software configurations meeting FDA 21 CFR Part 11 requirements for electronic records and signatures.

Software & Data Management

The embedded controller runs a deterministic real-time OS with dual-channel PID algorithms for simultaneous temperature/humidity regulation and closed-loop vibration amplitude control. Data acquisition operates at 10 Hz sampling rate across all monitored parameters (chamber air temp/RH, shaker acceleration/displacement, refrigerant pressures, and safety interlocks). Export formats include CSV, PDF test reports, and XML-based test definition files compatible with LabVIEW, MATLAB, and enterprise MES/QMS platforms via RS-232/RS-485 serial protocol or optional Ethernet gateway. Audit logs record user login/logout events, parameter modifications, alarm triggers, and calibration actions with timestamp and operator ID—fully compliant with ISO/IEC 17025 documentation requirements.

Applications

• Qualification testing of avionics enclosures subjected to rapid altitude-induced thermal shock and airborne vibration spectra (DO-160 Section 21).
• Accelerated life testing of Li-ion battery modules under combined thermal cycling and random vibration profiles mimicking EV chassis dynamics.
• Failure analysis of MEMS accelerometers exposed to humidity ingress followed by resonant-frequency shift under controlled vibrational excitation.
• Validation of conformal coating adhesion strength on flex-rigid PCBs through humidity soak → thermal ramp → vibration dwell sequences.
• Environmental screening of medical device housings per ISO 14971 risk management and IEC 60601-1 collateral standard requirements.

FAQ

Can the OK-ZTH-408 operate as a standalone temperature-humidity chamber without vibration activation?
Yes. All environmental subsystems are independently controllable via the main controller interface. Users may deactivate vibration output while retaining full thermal and hygric functionality.
What is the maximum payload mass supported during simultaneous vibration and thermal-humidity operation?
The standard configuration supports up to 50 kg centered load with ≤±1 mm lateral displacement tolerance at 200 Hz. Customized shaker mounts and inertial mass balancing are available upon request.
Is remote monitoring and control possible over LAN or internet?
Native support is limited to RS-232/485. Optional Ethernet communication module (part no. OK-ETH-100) enables Modbus TCP and HTTP API access for integration into centralized test fleet management systems.
Does the chamber include validation documentation for GxP-regulated environments?
Factory-installed IQ/OQ documentation packages are available as add-on services, including URS alignment, sensor calibration certificates, and 3Q protocol execution support.
How frequently does the water filtration system require maintenance?
The inline filter cartridge is rated for 6 months of continuous operation under standard tap water conditions; replacement interval shortens to 3 months in high-mineral-content regions. Automatic clog detection alerts appear on the controller display.