SUNS SD4-XXX Four-Channel Leak Integrity Tester

Overview

The SUNS SD4-XXX Four-Channel Leak Integrity Tester is an engineered solution for high-throughput, quantitative pressure decay and differential pressure-based leak detection in regulated manufacturing environments. It operates on the principle of controlled pressurization followed by precise monitoring of pressure change over time — a method widely accepted under ISO 15142, ASTM F2096, and USP for non-destructive integrity verification of sealed packages, medical devices, automotive components, and precision enclosures. Designed for integration into production lines and QC laboratories, the SD4-XXX delivers synchronized, independent testing across four isolated channels — each with fully programmable test parameters, real-time drift compensation, and deterministic response timing. Its architecture supports both static pressure hold and dynamic pressure decay modes, enabling compliance with both qualitative pass/fail criteria and quantitative leakage rate calculations (e.g., mL/min or std. cm³/min equivalents derived from ΔP/Δt).

Key Features

• Four independently configurable test channels with galvanically isolated pressure circuits — eliminates cross-talk and enables concurrent testing of heterogeneous samples.
• High-fidelity pressure measurement using imported SMC precision pressure regulators and OEM-grade piezoresistive sensor chips, calibrated to ±0.2 % full-scale accuracy with automatic thermal and barometric drift correction.
• Dedicated 32-bit embedded processor with 24-bit analog-to-digital conversion ensures sub-millisecond sampling resolution and AI-accelerated signal conditioning for rapid stabilization and reliable endpoint detection.
• Intuitive 10-inch capacitive touchscreen running a proprietary real-time OS — optimized for low-latency UI response, minimal training requirements, and robust operation in industrial settings.
• Integrated IoT stack supporting MQTT and TCP/IP protocols; enables remote configuration, live status monitoring, firmware OTA updates, and secure cloud data forwarding via TLS 1.2.
• Programmable timing resolution down to 0.1 second across a 0–999.9 s range, with user-defined ramp-up, dwell, decay, and vent phases per channel.

Sample Compatibility & Compliance

The SD4-XXX accommodates rigid and semi-rigid containers, blister packs, vials, syringes, IV bags, filter housings, and hermetically sealed electronics enclosures. Its modular pneumatic interface allows quick adaptation to custom fixtures using standard NPT or BSPP ports. All test methods comply with Good Manufacturing Practice (GMP) documentation requirements: audit trails record operator ID, timestamp, parameter set, raw pressure curve data, and final verdict per test cycle. The system supports 21 CFR Part 11-compliant electronic signatures when paired with validated identity management and role-based access control (RBAC). Calibration certificates traceable to NIST standards are provided with each unit, and periodic verification procedures align with ISO/IEC 17025 guidelines.

Software & Data Management

Firmware includes built-in data logging with cyclic buffer storage (≥10,000 test records), USB mass storage export (CSV, PDF reports), and direct MES integration via configurable RESTful API or OPC UA server. Barcode scanning (1D/2D) auto-populates batch IDs, lot numbers, and material codes into test metadata. Historical data is indexed by channel, date/time, operator, and result status — supporting statistical process control (SPC) analysis and CAPA workflows. Optional software modules provide automated report generation compliant with ISO 9001 Annex SL structure, including uncertainty budgeting per GUM (Guide to the Expression of Uncertainty in Measurement).

Applications

• Pharmaceutical packaging: Seal integrity validation of aluminum-plastic blisters, glass vials, and pre-filled syringes per USP .
• Medical device manufacturing: Leak testing of catheter assemblies, implantable housing, and sterile barrier systems.
• Automotive electronics: Verification of IP67/IP68 ingress protection for ECUs, sensors, and battery enclosures.
• Consumer electronics: Functional leak screening of waterproof smartphones, wearables, and audio devices prior to final assembly.
• Quality assurance labs: Cross-functional comparison studies between pressure decay, vacuum decay, and mass flow methodologies.

FAQ

What pressure ranges are available for the SD4-XXX?

The instrument offers eight selectable full-scale ranges: 3–50 kPa, 3–100 kPa, 5–200 kPa, 10–500 kPa, 10–800 kPa, 10–1000 kPa, 35–1500 kPa, and 35–2000 kPa — each configurable per channel.
Does the SD4-XXX support GLP/GMP audit trails?

Yes. All test executions generate immutable digital records containing operator ID, timestamp, parameter version, raw sensor output, and pass/fail decision logic — stored locally and exportable for regulatory review.
Can it interface with factory MES or SCADA systems?

Yes. Native RS-232/RS-485 serial, Modbus RTU/TCP, and Ethernet-based HTTP/REST APIs enable bidirectional communication with enterprise manufacturing execution systems.
Is mechanical pressure regulation available as an alternative to electric control?

Yes. Mechanical regulator kits are offered as optional accessories for applications requiring fail-safe, non-powered pressure setting.
How is calibration maintained across extended operation?

The system performs automatic zero-point and span drift compensation before each test sequence using internal reference algorithms and ambient temperature feedback — reducing need for manual recalibration.