OK Instruments OK-ZTH-512.000 Combined Temperature, Humidity and Vibration Environmental Test Chamber
| Brand | OK Instruments |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | OK-ZTH-512.000 |
| Temperature Range | −70 °C to +150 °C |
| Humidity Range | 20–98 %RH at 20–85 °C |
| Temperature Ramp Rates | 5 / 10 / 15 °C/min |
| Temperature Uniformity | ≤ ±0.5 °C |
| Standard Load Capacity | 15 kg aluminum mass (350 W thermal dissipation) |
Overview
The OK Instruments OK-ZTH-512.000 Combined Temperature, Humidity and Vibration Environmental Test Chamber is an integrated reliability validation platform engineered for simultaneous multi-stress environmental simulation. It combines precision-controlled thermal cycling, regulated humidity exposure, and mechanically coupled vibration excitation within a single test volume—enabling accelerated life testing, HALT/HASS protocols, and qualification per MIL-STD-810, IEC 60068-2, and automotive OEM specifications (e.g., GM W3177, Ford CETP). Unlike sequential or chamber-coupled systems, the OK-ZTH-512.000 employs a monolithic chamber architecture with dynamically synchronized control loops, ensuring phase-coherent application of temperature gradients, moisture saturation, and broadband mechanical excitation (via optional electrodynamic or servo-hydraulic shakers). This co-location eliminates inter-chamber transfer artifacts and enables true stress interaction analysis—critical for evaluating solder joint fatigue, polymer creep under hygrothermal load, or MEMS device drift under combined thermo-mechanical strain.
Key Features
- Monolithic stainless steel test chamber with SUS304 mirror-finish interior and A3 carbon steel exterior with epoxy powder coating for corrosion resistance and structural rigidity.
- Dual-stage refrigeration system using original French Tecumseh (formerly “Danfoss/Tecumseh”) hermetic compressors and binary low-temperature cascade design for stable operation down to −70 °C.
- High-efficiency multivane centrifugal air circulation system with adjustable airflow velocity and pressure distribution—validated to meet IEC 60068-3-5 uniformity requirements (±0.5 °C across 15 kg aluminum reference load).
- Programmable LCD touchscreen controller with RS-232/RS-485 interface; supports user-defined profiles with up to 99 segments, real-time data logging, and alarm-triggered event capture.
- Integrated vibration interface: standardized flange-mounting interface (ISO 13373-1 compliant) for seamless coupling with external shakers (e.g., LDS V875, TIRA TV 51120), including dynamic sealing solutions to maintain chamber integrity during 5–2000 Hz excitation.
- Optical observation window with triple-layer laminated tempered glass, embedded ITO conductive film for anti-fogging, and EMI-shielded viewport gasketing for EMC-sensitive applications.
- Configurable 50 mm diameter feedthrough port (left-side mounted) with silicone O-ring seal, rated for 300 VAC/DC and compatible with thermocouple, LVDT, and digital signal lines.
Sample Compatibility & Compliance
The OK-ZTH-512.000 accommodates samples up to 15 kg mass with internal heat dissipation up to 350 W—sufficient for full-function testing of automotive ECUs, aerospace avionics modules, and industrial IoT gateways. Chamber geometry (512 L internal volume) permits standard test fixtures per ASTM D4332 and ISO 16750-4. All thermal and humidity control algorithms are traceable to NIST-traceable reference sensors, and system calibration reports conform to ISO/IEC 17025 requirements. The controller firmware supports audit trail functionality and electronic signature capability—aligning with FDA 21 CFR Part 11 expectations for regulated industries. Full compliance documentation (including test reports per IEC 60068-2-1, -2-2, -2-30, and -2-64) is provided upon delivery.
Software & Data Management
The embedded controller runs OK-EnviroControl™ v4.2 firmware, supporting profile-based sequencing, real-time parameter overlay (temperature/humidity/vibration acceleration), and CSV export of time-stamped sensor data at user-selectable intervals (100 ms to 10 s resolution). Optional PC-based OK-TestSuite™ software extends functionality with statistical process control (SPC) charting, failure mode correlation mapping, and automated report generation compliant with ISO 9001 Annex SL structure. Data encryption (AES-128), role-based access control, and configurable backup to network drives or USB media ensure data integrity and regulatory readiness.
Applications
- Accelerated stress screening of PCB assemblies under combined thermal shock, humidity soak, and random vibration (per JEDEC JESD22-A104 & A118).
- Qualification testing of battery management systems (BMS) for electric vehicles under dynamic thermal-hygrometric-vibrational loads.
- Reliability assessment of optical encoders and laser diodes exposed to condensation cycles and resonant-frequency excitation.
- Validation of medical device enclosures (IPX4/IPX7) under cyclic humidity ramping while subjected to transport-simulation vibration spectra.
- Material science studies on hygroscopic polymer composites undergoing dimensional stability evaluation under simultaneous moisture absorption and mechanical loading.
FAQ
What vibration shaker models are compatible with the OK-ZTH-512.000?
The chamber features a standardized ISO 13373-1 mounting interface and dynamic isolation mounts, supporting electrodynamic shakers up to 100 kN peak force (e.g., TIRA TV 51120, LDS V875) and servo-hydraulic systems meeting ISO 10816-3 Class 6 vibration severity.
Does the system support humidity control below 0 °C?
Yes—the chamber maintains relative humidity from 20–98 %RH across the full operational temperature range (−70 °C to +150 °C), utilizing heated dew-point sensors and frost-resistant humidifier nozzles calibrated per ISO 12048.
Can test data be exported in formats compliant with laboratory information management systems (LIMS)?
All logged data is exportable as UTF-8 encoded CSV files with ISO 8601 timestamps and SI-unit headers; optional XML schema mapping is available for direct LIMS ingestion (e.g., LabWare LIMS, Thermo Fisher SampleManager).
Is third-party calibration certification included?
Each unit ships with a factory calibration certificate traceable to NIST standards; optional UKAS-accredited calibration (ISO/IEC 17025) is available upon request.
What maintenance intervals are recommended for the refrigeration system?
Compressor oil and filter-drier replacement is recommended every 24 months under continuous operation; annual verification of refrigerant charge and leak integrity is advised per ASHRAE Guideline 3-2021.
