OK Instruments OK-TS-49.00 Two-Zone Thermal Shock Test Chamber
| Brand | OK Instruments |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Model | OK-TS-49.00 |
| High-Temperature Range | +150 °C |
| Low-Temperature Range | −50 °C |
| Thermal Shock Range | −50 °C to +150 °C |
| Temperature Stability | ±2 °C |
| Heating Rate | 10 °C/min |
| Cooling Rate | 10 °C/min |
Overview
The OK Instruments OK-TS-49.00 Two-Zone Thermal Shock Test Chamber is an engineered solution for accelerated reliability assessment of electronic components, automotive modules, aerospace assemblies, and polymer-based materials subjected to rapid, extreme temperature transitions. It operates on a dual-chamber (hot/cold) static-sample principle: test specimens remain stationary in the central test zone while pneumatically actuated air doors rapidly transfer the thermal environment between insulated high-temperature (up to +150 °C) and low-temperature (down to −50 °C) reservoirs. This architecture eliminates mechanical stress from specimen movement and ensures repeatable, ISO 16750-4 and MIL-STD-810H compliant thermal shock profiles. The system employs a cascade refrigeration circuit—comprising a primary R404A stage and secondary R23 stage—coupled with a water-cooled condenser requiring external cooling tower support (10 m³/h flow capacity). Temperature control is governed by a Honeywell touchscreen HMI running PID auto-tuning algorithms, delivering ±0.5 °C setpoint accuracy and ±2.0 °C uniformity across the 40 × 35 × 30 cm test chamber volume.
Key Features
- Two-zone static-sample design with pneumatic air-door switching—eliminates specimen handling during thermal cycling and improves test repeatability
- Honeywell color touchscreen HMI controller with intuitive navigation, multilingual interface support, and real-time graphical trend logging
- PID-based temperature regulation with adaptive tuning—ensures stable setpoint maintenance under dynamic load conditions
- Programmable cycle parameters: number of cycles, dwell time per zone, transition time, automatic defrost scheduling, and start-time reservation
- Integrated safety architecture including over-temperature cut-off, compressor high-pressure shutdown, phase failure protection, and door interlock monitoring
- Self-diagnostic system with on-screen fault codes and step-by-step troubleshooting guidance for common operational anomalies
- Energy-regulated cascade refrigeration—optimizes compressor staging and refrigerant flow to reduce power consumption and extend component life
Sample Compatibility & Compliance
The OK-TS-49.00 accommodates samples up to 40 × 35 × 30 cm (W×H×D), with two adjustable SUS#304 stainless steel shelves and a standard 50 mm diameter cable port. Its construction meets IEC 60068-2-14 (Test N: Change of temperature) and supports validation protocols aligned with AEC-Q200, JEDEC JESD22-A104, and IPC-9701. The chamber’s insulation uses high-density, flame-retardant polyurethane foam (PU), and internal/external surfaces are fabricated from brushed 304 stainless steel—ensuring corrosion resistance and cleanroom-compatible surface integrity. All electrical systems comply with CE marking requirements (EN 61000-6-2/6-4) and UL 61010-1 safety standards. Optional IQ/OQ documentation packages are available for GLP/GMP environments requiring audit-ready calibration traceability.
Software & Data Management
The embedded Honeywell controller provides local data acquisition at 1-second intervals, storing up to 100 test programs and 30 days of continuous runtime logs. Export is supported via USB 2.0 to CSV or PDF format for offline analysis. For enterprise integration, optional Ethernet-enabled remote monitoring enables SCADA-level access through Modbus TCP or OPC UA protocols. Audit trail functionality—including user login timestamps, parameter modification history, and alarm event records—meets FDA 21 CFR Part 11 requirements when paired with password-protected administrator accounts and electronic signature workflows. Calibration certificates reference NIST-traceable standards and include uncertainty budgets per ISO/IEC 17025 guidelines.
Applications
- Qualification testing of printed circuit boards (PCBs) and solder joint integrity under thermal fatigue stress
- Validation of encapsulant adhesion and die-attach reliability in semiconductor packaging
- Material compatibility assessment for automotive ECUs exposed to under-hood thermal transients
- Accelerated aging studies of lithium-ion battery cells and BMS housings
- Verification of seal integrity and dimensional stability in medical device enclosures
- Process window definition for reflow soldering and conformal coating curing steps
FAQ
What cooling infrastructure is required for operation?
The OK-TS-49.00 requires an external water-cooled condenser system with a minimum flow rate of 10 m³/h and supply water temperature ≤32 °C. A dedicated cooling tower must be installed outdoors and connected via insulated piping.
Can the chamber operate continuously without manual intervention?
Yes—the system supports unattended multi-cycle operation with programmable start times, automatic defrost cycles, and alarm-triggered shutdown with event logging.
Is the temperature uniformity verified across the entire test volume?
Uniformity is validated per IEC 60068-3-5 using nine calibrated PT100 sensors placed at defined locations; results are documented in the factory acceptance test (FAT) report.
What refrigerants are used, and are they compliant with current environmental regulations?
R404A (high-stage) and R23 (low-stage) are employed—both are EPA SNAP-listed for industrial refrigeration applications and meet EU F-Gas Regulation (No. 517/2014) phase-down schedules for new equipment.
How is calibration maintained over long-term use?
The unit includes dual independent PT100 sensor channels per zone (control + verification), and annual recalibration services are available with ISO/IEC 17025-accredited certificates.
