SUNS SDX-XX Dual-Channel Hermeticity Tester

Overview

The SUNS SDX-XX Dual-Channel Hermeticity Tester is an engineered solution for quantitative leak detection and pressure decay-based integrity verification of sealed enclosures, medical devices, electronic housings, automotive components, and packaging systems. It operates on the differential pressure decay principle: a test specimen is pressurized to a defined setpoint within a calibrated range, isolated from the pressure source, and monitored for pressure loss over a user-defined dwell time. The instrument calculates leakage rate by correlating the observed pressure drop with internal volume, temperature stability, and elapsed time—enabling traceable, repeatable pass/fail decisions aligned with ISO 15528, ASTM E493, and ISO 10648-2 standards for leak testing methodology.

Key Features

• Real-time dual-channel independent testing—simultaneously evaluates two specimens under identical or differentiated test protocols, improving throughput without compromising metrological integrity.
• Dedicated 32-bit embedded processor with 24-bit high-resolution analog-to-digital conversion ensures stable signal acquisition and sub-millisecond response latency during transient pressure events.
• Imported high-stability piezoresistive pressure sensor core with auto-compensated thermal drift correction—minimizes zero-point drift across ambient temperature fluctuations (5–45 °C).
• Precision SMC proportional pressure regulator and ultra-sensitive differential transducer enable fine-grained pressure control and measurement resolution down to 1 Pa (model-dependent).
• Proprietary real-time OS interface optimized for industrial QA/QC workflows—no third-party OS dependencies, no background processes, deterministic boot and operation timing.
• Integrated IoT architecture supports MQTT/HTTP(S) protocols for secure cloud telemetry, remote firmware updates, and centralized fleet monitoring via enterprise SCADA or MES platforms.
• Full hardware-level traceability: each test cycle logs timestamp, operator ID (via barcode scan), chamber ID, pressure curve data, pass/fail flag, and environmental metadata (ambient T/RH if external sensors connected).

Sample Compatibility & Compliance

The SDX-XX accommodates rigid and semi-rigid test articles up to 5 L internal volume (with optional volume compensation calibration). Fixture adaptability includes NPT, BSPP, and quick-connect pneumatic interfaces. All pressure pathways are constructed from 316L stainless steel and fluoropolymer-sealed components to ensure chemical compatibility with medical-grade cleaning agents and sterilization validation environments. The system meets electromagnetic compatibility requirements per IEC 61326-1 and safety compliance per IEC 61010-1. Test reports generated by the device satisfy audit requirements for ISO 13485-certified medical device manufacturing, IATF 16949 automotive production, and FDA 21 CFR Part 11-compliant electronic records when deployed with optional digital signature and audit trail modules.

Software & Data Management

On-device firmware supports CSV export via USB flash drive, including raw pressure vs. time arrays, statistical summaries (mean, std dev, Cp/Cpk), and configurable pass/fail thresholds. Optional PC-based analysis suite provides advanced curve fitting (exponential decay modeling), SPC charting (X-bar/R, CUSUM), batch trending, and automated report generation in PDF or Excel format. All data exchanges with Manufacturing Execution Systems (MES) occur via standardized JSON payloads over TCP/IP or serial protocols—supporting direct integration with Siemens Opcenter, Rockwell FactoryTalk, or custom ERP endpoints. Audit trails record every configuration change, user login/logout, and test result modification with immutable timestamps and role-based access controls.

Applications

• Medical device packaging validation (ISO 11607-1): blister packs, pouches, and Tyvek®-laminated trays.
• Hermeticity screening of implantable electronics (pacemakers, neurostimulators) per MIL-STD-883 Method 1014.
• Automotive EV battery module housing integrity verification prior to electrolyte filling.
• Consumer electronics enclosure leak rate qualification (IP67/IP68 pre-certification screening).
• Pharmaceutical vial and syringe stopper seal evaluation under USP <1207> guidance.
• Quality gate testing in high-volume assembly lines—integrated with vision inspection and robotic handling systems via discrete I/O signaling.

FAQ

What pressure ranges are supported—and how is range selection implemented?
The SDX-XX offers eight factory-calibrated pressure ranges spanning 3–50 kPa to 35–2000 kPa. Range selection is performed at setup via firmware configuration; each range uses dedicated sensor scaling and A/D gain optimization to maintain ±0.2 % FS accuracy across the full span.
Can the instrument be validated for GMP environments?
Yes—full IQ/OQ documentation packages are available. The system supports 21 CFR Part 11 compliance when configured with password-protected user roles, electronic signatures, and tamper-evident audit logs stored locally and exported securely.
Is multi-channel expansion limited to even-numbered configurations?
No—while the base SDX-XX is dual-channel, modular rack-mount variants support 4-, 6-, or 8-channel parallel operation with synchronized start/stop triggers and individual channel diagnostics.
How does environmental temperature affect test repeatability?
The built-in thermal drift compensation algorithm continuously monitors sensor die temperature and applies real-time offset correction. Validation data shows <±0.05 % FS deviation across 5–45 °C ambient operating range when using stabilized test fixtures.
What maintenance intervals are recommended for long-term accuracy?
Annual recalibration against NIST-traceable deadweight testers is advised. SMC regulators require filter replacement every 6 months under continuous operation; pressure ports should be inspected for particulate ingress before each shift.