OK Instruments OK-ZTH-1000.163 Combined Temperature, Humidity & Vibration Test System

Overview

The OK Instruments OK-ZTH-1000.163 Combined Temperature, Humidity & Vibration Test System is an integrated environmental reliability test platform engineered for simultaneous application of thermal, hygrothermal, and mechanical (vibrational) stress profiles. It operates on the principle of multi-stress acceleration—leveraging synergistic interaction between controlled temperature/humidity cycles and precisely regulated electrodynamic vibration—to replicate real-world operational, transportation, and storage conditions where environmental variables co-occur. Unlike sequential or single-stress testing, this system enables true concurrent exposure per IEC 60068-2-64, MIL-STD-810H Method 514.7, and ISO 16750-4, supporting accelerated life testing (ALT), highly accelerated life testing (HALT), environmental stress screening (ESS), and comprehensive environmental reliability testing (CERT). Its architecture integrates a high-efficiency refrigeration/heating subsystem, a PID-controlled humidity generation and condensation management system, and a low-distortion electromagnetic shaker mounted directly beneath the test chamber floor—ensuring minimal phase lag and high-fidelity coupling between thermal transients and vibratory inputs.

Key Features

• Triple-stress integration: Simultaneous control of temperature (−70 °C to +150 °C), relative humidity (20–98 %RH within 20–85 °C operating envelope), and broadband vibration (standard configuration supports vertical-axis electrodynamic excitation with programmable sine, random, and transient profiles)
• High-fidelity thermal dynamics: Programmable ramp rates up to 15 °C/min, stabilized by dual-stage cascade refrigeration, stainless-steel insulated chamber walls, and optimized air circulation design ensuring ≤ ±0.5 °C temperature uniformity across the working volume
• Robust vibration interface: Rigid aluminum platen mounted directly to the shaker armature; standard load capacity validated at 15 kg inertial mass with 350 W continuous internal heat load—compatible with industry-standard fixture mounting (M8/M10 threaded inserts)
• Intelligent controller architecture: Touchscreen HMI with preloaded test templates compliant with GB/T 2423, IEC 60068, and MIL-STD-810; supports user-defined profile sequencing including dwell, ramp, hold, and conditional branching based on real-time sensor feedback
• Structural integrity for long-term operation: Reinforced chamber frame, vibration-isolated base pedestal, and EMI-shielded cabling pathways to maintain signal fidelity during high-acceleration testing

Sample Compatibility & Compliance

The OK-ZTH-1000.163 accommodates samples up to 1000 L internal volume (chamber dimensions: W1000 × D1000 × H1000 mm), with standardized mounting interfaces for automotive ECUs, aerospace avionics modules, battery management systems (BMS), power electronics enclosures, and consumer device assemblies. All thermal and vibrational outputs are traceably calibrated per ISO/IEC 17025-accredited procedures. The system supports full audit trail logging required under GLP and GMP frameworks, with optional 21 CFR Part 11-compliant software modules available for pharmaceutical and medical device validation. Humidity control meets ISO 16750-4 dew point stability requirements, while vibration performance adheres to ISO 5344 mechanical interface specifications and IEEE 1159.3 shock response spectrum (SRS) generation capability.

Software & Data Management

Built-in OK-TestSuite v4.2 firmware provides synchronized acquisition of chamber temperature, humidity, chamber wall thermocouple gradients, shaker armature displacement/acceleration/velocity, and user-connected external sensors (e.g., strain gauges, voltage/current monitors). Data is timestamped with microsecond resolution and stored in .CSV and binary .TDMS formats. Remote monitoring via Ethernet/IP or Modbus TCP enables integration into centralized MES or PLM platforms. Optional OK-DataVault module adds encrypted database archiving, role-based access control, electronic signature workflows, and automated report generation aligned with ASTM E2911 and ISO/IEC 17025 documentation standards.

Applications

• Automotive: Validation of ADAS controllers, EV battery packs, and infotainment units under combined thermal cycling and road-spectrum vibration per ISO 16750-4 and LV-124
• Aerospace & Defense: Qualification of flight-critical components to DO-160 Section 22 (vibration) and Section 4/5 (temperature/humidity), including launch-phase simulation
• Energy Systems: Endurance testing of grid-tied inverters, solar charge controllers, and stationary energy storage systems per UL 1741 SB and IEC 62109
• Railway: EN 50125-3 compliance testing for onboard signaling, traction control, and passenger information systems
• Consumer Electronics: Accelerated wear-out analysis of smartphones, wearables, and IoT gateways under simulated logistics stress (ASTM D4169, ISTA 3A)

FAQ

What standards does the OK-ZTH-1000.163 support for combined environment testing?
It natively supports test profile execution per IEC 60068-2-64 (random vibration + temperature), MIL-STD-810H Method 514.7 (vibration), Method 502.7 (temperature), and Method 507.6 (humidity), as well as GB/T 2423 series for domestic certification.
Can the system perform three-axis vibration simultaneously with temperature and humidity?
The standard configuration includes vertical-axis (Z-direction) electrodynamic vibration. Triaxial capability is available as an optional upgrade with orthogonal shaker stacks and multi-channel closed-loop control.
Is remote calibration and preventive maintenance supported?
Yes—OK Instruments provides annual on-site calibration services traceable to NIM (China National Institute of Metrology), along with predictive maintenance alerts via embedded diagnostics and cloud-connected service portal access.
How is thermal-vibrational phase synchronization ensured during rapid ramping?
The controller uses shared real-time clock architecture and hardware-triggered interrupt synchronization between thermal actuation signals and shaker drive waveform generators, minimizing inter-system latency to < 10 ms.
What safety interlocks are implemented during combined stress operation?
Redundant hardware interlocks include over-temperature cutoff, shaker over-travel limit switches, chamber door open detection, refrigerant pressure monitoring, and emergency stop chain integration per ISO 13850.