OK-ZTH-1000.000 Combined Temperature-Humidity-Vibration Environmental Test Chamber
| Brand | OK Instruments |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | OK-ZTH-1000.000 |
| Temperature Range | −70 °C to +150 °C |
| Humidity Range | 20–98 %RH at 20–85 °C |
| Temperature Ramp Rate | 5 / 10 / 15 °C/min (selectable) |
| Temperature Uniformity | ≤ ±0.5 °C |
| Standard Load Capacity | 15 kg aluminum mass block |
Overview
The OK-ZTH-1000.000 Combined Temperature-Humidity-Vibration Environmental Test Chamber is an integrated reliability validation platform engineered for simultaneous multi-stress environmental simulation. It combines precision-controlled thermal cycling, humidity conditioning, and mechanical vibration excitation within a single test volume—enabling accelerated life testing, HALT/HASS protocols, and structural integrity verification under realistic operational stress spectra. The system operates on the principle of synergistic stress application: temperature and humidity are regulated via a dual-refrigeration cascade system with PID-controlled steam humidification and desiccant-assisted dehumidification, while vibration is delivered through a dynamically coupled electrodynamic shaker system mounted beneath the test chamber floor. This architecture ensures minimal thermal and acoustic cross-talk between subsystems, maintaining measurement fidelity during concurrent operation. Designed for compliance-driven industries—including aerospace (per MIL-STD-810H, RTCA/DO-160G), automotive (ISO 16750-4, GMW3172), and medical electronics (IEC 60601-1)—the chamber supports full traceability, audit-ready data logging, and deterministic test profile execution.
Key Features
- Triple-stress integration: Simultaneous control of temperature (−70 °C to +150 °C), relative humidity (20–98 %RH within 20–85 °C), and vibration (programmable sine, random, swept-sine, resonance dwell, and shock profiles)
- High-fidelity chamber construction: Interior lined with electropolished SUS304 stainless steel; exterior enclosure fabricated from A3 carbon steel with powder-coated finish; double-layer high-tensile silicone gasket sealing at door interface
- Advanced thermal management: Dual-stage refrigeration system using environmentally compliant R404A/R23 refrigerants; independent steam generator and desiccant wheel for precise RH control; programmable ramp rates of 5, 10, or 15 °C/min
- Modular vibration interface: Floor-mounted electrodynamic shaker with configurable payload capacity (standard 15 kg aluminum reference mass); epoxy-silicone composite isolation interface ensures mechanical decoupling without compromising thermal seal integrity
- Intelligent controller: 10.1-inch color LCD touchscreen HMI with embedded real-time OS; supports up to 999 segments per test program; built-in RS232/RS485 communication ports; optional Ethernet and USB data export
- Observation & accessibility: Triple-layer low-E tempered glass viewport with conductive ITO film for anti-fog viewing; 50 mm diameter cable port on left side wall; retractable rail system for vibration table insertion/removal without chamber disassembly
Sample Compatibility & Compliance
The OK-ZTH-1000.000 accommodates DUTs up to 15 kg mass with maximum internal power dissipation of 350 W. Its internal dimensions (W×D×H: 1000×1000×1000 mm) support standard military and automotive component form factors, including ECUs, avionics modules, battery packs, and sensor assemblies. All thermal and humidity control algorithms adhere to ASTM E145-21 (Standard Specification for Gravity-Convection and Forced-Ventilation Ovens) and ISO 6270-2 (Paints and varnishes — Determination of resistance to humidity). Vibration subsystem performance conforms to ISO 5344 (Mechanical vibration — Testing of electrodynamic vibration test systems) and IEEE 344 (IEEE Recommended Practice for Seismic Qualification of Class 1E Equipment for Nuclear Power Generating Stations). The system supports GLP/GMP-compliant operation via optional 21 CFR Part 11–enabled software, including electronic signatures, audit trail generation, and user role-based access control.
Software & Data Management
The chamber integrates with OK-TestSuite™ v4.x—a Windows-based test orchestration platform supporting full-cycle test definition, remote monitoring, and post-processing analytics. Users define multi-axis stress profiles combining thermal ramps, humidity holds, and vibration spectra in synchronized time domains. Real-time data streams include chamber air temperature, chamber RH, chamber dew point, shaker armature acceleration (gpk), displacement (mmp-p), and velocity (mm/srms). All measurements are timestamped with microsecond resolution and stored in .CSV and .TDMS formats. Optional features include automated report generation (PDF/HTML), failure event tagging, and integration with enterprise LIMS or PLM systems via OPC UA or RESTful API endpoints.
Applications
- Early-life failure detection in electronic assemblies subjected to thermal-hygric-mechanical stress coupling
- Structural fatigue assessment of solder joints, conformal coatings, and PCB interconnects under combined thermal cycling and resonant vibration
- Qualification testing of electric vehicle battery modules per UN 38.3 Section 38.3.4 (vibration + temperature) and IEC 62660-2 (humidity cycling)
- Environmental screening of aerospace-grade connectors and harnesses per MIL-DTL-38999 and SAE AS50881
- Reliability growth testing of IoT edge devices operating in uncontrolled ambient conditions (e.g., smart grid sensors, agricultural telemetry units)
- Validation of hermetic sealing integrity for MEMS packages using humidity soak followed by mechanical shock
FAQ
What vibration standards does the OK-ZTH-1000.000 support?
It natively executes test profiles defined in MIL-STD-810H Method 514.7 (Vibration), ISO 16750-3 (Road vehicles), and IEC 60068-2-64 (Random vibration), with customizable PSD and SRS synthesis capabilities.
Can the chamber operate vibration-only or temperature/humidity-only modes?
Yes—each subsystem operates independently via controller mode selection, enabling isolated stress testing or fully coupled multi-stress sequences.
Is third-party calibration documentation available?
Factory calibration certificates (NIST-traceable for temperature, humidity, and acceleration transducers) are provided with each unit; optional annual recalibration services are available through OK’s ISO/IEC 17025-accredited metrology lab.
What is the typical lead time for configuration-specific modifications?
Standard configurations ship within 8–10 weeks; customizations—including extended temperature range, enhanced vibration force capacity, or specialized DUT mounting fixtures—require 12–16 weeks from PO confirmation.
Does the system meet CE or UKCA marking requirements?
Yes—the OK-ZTH-1000.000 complies with the EU Machinery Directive 2006/42/EC, EMC Directive 2014/30/EU, and Low Voltage Directive 2014/35/EU; technical files and Declaration of Conformity are supplied upon delivery.
