OK-PCT Series High-Pressure Steam Aging Test Chamber
| Brand | OK Instruments |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Price | USD 4,100 (FOB) |
| Model | OK-PCT-35 / OK-PCT-45 / OK-PCT-55 / OK-PCT-65 |
| Internal Dimensions (Φ×D, cm) | 30×45 |
| External Dimensions (W×H×D, cm) | 65×100×65 |
| Temperature Range | 121 °C, 132 °C (143 °C optional) |
| Humidity | 100 % RH (saturated steam) |
| Operating Pressure | 0.0–2.0 kgf/cm² (gauge), up to 3.0 kgf/cm² on special order |
| Temp. Uniformity | ≤ ±2 °C |
| Humidity Uniformity | ≤ ±3 % RH |
| Circulation Method | Natural convection of saturated steam |
| Safety Systems | Low-water cutoff, overpressure relief valve, overtemperature shutdown, automatic pressure interlock door lock, dual-mode (auto/manual) water replenishment |
| Power Supply | AC 220 V ±5 %, 50 Hz ±0.5 Hz |
| Standard Accessories | Two-tier stainless steel test racks |
| Compliance | Designed per IEC 60068-2-13, ASTM F1980, ISO 11607-2, and JIS Z 2250 for accelerated aging and integrity validation of sealed medical devices and electronics packaging |
Overview
The OK-PCT Series High-Pressure Steam Aging Test Chamber is an engineered environmental stress system designed for accelerated aging and hermeticity validation under controlled saturated steam conditions. It operates on the principle of pressurized saturated steam exposure—leveraging elevated temperature and pressure to accelerate hydrolytic degradation, seal failure, and material interface delamination in sealed assemblies. Unlike ambient-pressure humidity chambers, this system maintains precise thermodynamic equilibrium between temperature and corresponding saturation pressure (e.g., 121 °C ≡ ~2.0 kgf/cm² gauge), enabling reproducible, time-compressed evaluation of long-term stability in medical device packaging, multilayer PCB laminates, encapsulated ICs, and silicone-sealed optoelectronic components. Its cylindrical stainless-steel pressure vessel architecture conforms to ASME BPVC Section VIII Division 1 design principles for low-pressure industrial vessels, ensuring structural integrity during repeated thermal cycling and pressure ramping.
Key Features
- Microprocessor-based PID temperature controller with real-time saturation curve compensation ensures stable setpoint tracking within ±0.5 °C deviation during extended dwell cycles.
- Integrated safety interlock system: door remains mechanically locked when internal pressure exceeds 0.05 kgf/cm²; lock releases only after full depressurization and cooling below 60 °C—compliant with ISO 13857 safety distance requirements.
- Cylindrical inner chamber and annular steam baffle minimize direct impingement of latent heat on test specimens, reducing localized thermal shock and condensate pooling—critical for evaluating thin-film adhesion or polymer-coated substrates.
- Self-regulating water level management: ultrasonic sensor-driven auto-refill maintains optimal boiler volume across 200-hour continuous operation without manual intervention; low-water alarm triggers audible/visual alerts and halts heating.
- High-integrity sealing: one-piece molded silicone gasket (Shore A 70, FDA-compliant elastomer) provides >10,000-cycle durability under cyclic compression at 2.0 kgf/cm², with self-tightening behavior due to differential pressure-induced radial force enhancement.
- Dual-function pressure/temperature display: analog Bourdon-tube pressure gauge (0–3.5 kgf/cm²) paired with digital LED readout (0.1 °C/0.01 kgf/cm² resolution) enables simultaneous verification of thermodynamic state variables per NIST-traceable calibration protocols.
Sample Compatibility & Compliance
The OK-PCT series accommodates diverse sample geometries—including rigid trays, flexible pouches, blister packs, ceramic substrates, and multi-layer flex circuits—within its fully drainable, electropolished 316L stainless-steel chamber. Its operational envelope satisfies key regulatory validation requirements: ASTM F1980 for accelerated aging of sterile barrier systems, ISO 11607-2 Annex B for shelf-life prediction modeling, and IEC 60068-2-13 for damp heat testing of electronic enclosures. All models include audit-ready event logging (timestamped pressure/temperature excursions, door open/close events, refill cycles) compatible with GLP/GMP documentation workflows. Optional CFR 21 Part 11-compliant software add-ons provide electronic signatures, role-based access control, and immutable data archiving.
Software & Data Management
Standard firmware supports RS-232/USB data export of time-stamped process logs (CSV format) including chamber temperature, absolute pressure, elapsed time, and alarm status. Optional PC-based control software (OK-ControlSuite v3.2) enables remote scheduling, multi-step profile programming (ramp-soak-hold sequences), real-time graphing, and automated report generation per ISO/IEC 17025 clause 7.8. Data files are structured for direct import into LIMS platforms or statistical process control tools (e.g., JMP, Minitab). Firmware updates maintain backward compatibility and undergo IEC 62304 Class B software lifecycle validation.
Applications
This system is routinely deployed in R&D labs and quality assurance departments for: accelerated shelf-life estimation of Tyvek®-based medical packaging; validation of moisture barrier performance in OLED display edge seals; screening of solder mask delamination resistance in high-density HDI PCBs; qualification of epoxy-encapsulated MEMS sensors under IPC-J-STD-020 moisture sensitivity levels; and comparative aging studies of silicone vs. butyl rubber gaskets in pharmaceutical vial closures. Its repeatable saturation conditions support Design of Experiments (DoE) frameworks for identifying critical failure modes prior to formal reliability qualification.
FAQ
What standards does the OK-PCT series comply with for medical packaging validation?
It meets the thermodynamic and procedural requirements of ASTM F1980–22, ISO 11607–2:2020, and AAMI TIR17 for accelerated aging of sterile barrier systems.
Can the chamber operate continuously for 200 hours without manual refilling?
Yes—its optimized water reservoir volume and low-evaporation-loss design enable unattended 200-hour runs at 132 °C/2.0 kgf/cm², provided initial fill level is at the “MAX” mark.
Is third-party calibration certification available?
Factory-installed PT100 sensors and pressure transducers ship with NIST-traceable calibration certificates (ISO/IEC 17025 accredited lab); on-site recalibration services are offered annually.
How is overpressure protection implemented?
A certified spring-loaded safety valve (ASME Code stamped) opens at 2.2 kgf/cm² ±0.1, venting steam via a dedicated external exhaust line; redundant electronic overpressure cutoff disables heating at 2.1 kgf/cm².
Does the system support custom temperature/pressure profiles?
Standard operation uses fixed saturation points; optional OK-ControlSuite software enables user-defined non-saturation profiles (e.g., isobaric holds, sub-boiling humidity ramps) with full data logging.
