MOCON Dansensor LeakPointer 3 Offline CO₂-Based Package Leak Tester

Overview

The MOCON Dansensor LeakPointer 3 is a dedicated offline leak detection instrument engineered for controlled atmosphere packaging (CAP) and modified atmosphere packaging (MAP) quality assurance in food, pharmaceutical, and consumer goods manufacturing. It operates on the principle of differential CO₂ concentration monitoring using non-dispersive infrared (NDIR) sensing technology. When a vacuum is applied to the sealed test chamber containing a MAP package, any breach—regardless of orientation or seal geometry—allows CO₂ from the package headspace to diffuse into the chamber. The LeakPointer 3 quantifies this CO₂ flux in real time, correlating it to equivalent leak aperture size (down to 50 µm) with high reproducibility. Unlike pressure decay or bubble emission methods, this CO₂-based approach is insensitive to ambient humidity, temperature drift, or package rigidity, making it uniquely suited for routine QC in regulated environments where shelf-life validation, traceability, and zero false-negative tolerance are critical.

Key Features

• Sub-50 µm leak detection sensitivity validated per ASTM F2338–22 (Standard Test Method for Nondestructive Detection of Leaks in Packages by Tracer Gas Detection)
• Automated 10-second test cycle—up to six packages per minute—with full parameter retention across operators and shifts
• Touchscreen interface with intuitive workflow: pre-programmed test methods (up to 100 stored), barcode scanning support, and user-level access control
• Integrated Venturi vacuum system delivering stable –750 mbar chamber vacuum without external pump dependency
• NDIR CO₂ sensor with dedicated signal cable ensures long-term stability, low cross-sensitivity to ambient CO₂ (operational limit: <1500 ppm), and minimal drift between calibrations
• Automatic data logging—including timestamp, operator ID, package ID, leak status (OK/LEAK), calculated equivalent hole diameter (µm), and CO₂ delta (ppm)—to internal memory (>1 million records)
• Native Ethernet (RJ45) and dual USB ports enable seamless integration with LIMS, MES, or electronic batch record systems; optional USB printer support for on-demand audit-ready reports

Sample Compatibility & Compliance

The LeakPointer 3 accommodates both flexible and rigid MAP packages—including pouches, trays, blister packs, and thermoformed containers—within defined dimensional limits (W₁ = 325 mm, W₂ = 295 mm, H₁ = 40 mm, H₂ = 86 mm with PackFix fixture; up to W₁ = 325 mm, W₂ = 268 mm, H₁ = 40 mm, H₂ = 110 mm without). Its CO₂-centric methodology aligns with ISO 11607–2:2019 (Packaging for terminally sterilized medical devices) and supports GMP/GLP-aligned workflows through configurable audit trails and 21 CFR Part 11–ready data export protocols when paired with Dansensor PackBase software. All firmware and calibration documentation comply with EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU, as confirmed by CE marking.

Software & Data Management

Data generated during each test cycle—including raw CO₂ concentration curves, vacuum profile logs, and pass/fail classification—is timestamped, encrypted, and stored locally with no loss upon power interruption. Export occurs via LAN in CSV or XML format, preserving metadata required for regulatory submissions (e.g., FDA BLA, EMA CMC dossiers). Optional Dansensor PackBase software extends functionality with statistical process control (SPC) charts, trend analysis across production batches, automated report generation (PDF/Excel), and role-based user permissions. All data exports include digital signatures and immutable audit logs compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).

Applications

The LeakPointer 3 serves as a primary release-testing tool for MAP integrity verification in high-value perishables—such as fresh-cut produce, cooked meats, cheese, and ready-to-eat meals—where oxygen ingress directly compromises microbial stability and sensory attributes. It enables empirical shelf-life modeling by correlating measured leak size with accelerated aging data under defined storage conditions (e.g., ISO 22000 Annex A.5.2). In pharmaceutical secondary packaging, it verifies barrier integrity of aluminum-laminated blisters used for moisture-sensitive solid dosage forms. Additionally, it supports root-cause analysis during packaging line qualification (IQ/OQ/PQ) and provides objective evidence for CAP compliance audits conducted by BRCGS, IFS PACsecure, or SQF Edition 9.

FAQ

How does the LeakPointer 3 differentiate between micro-leaks and background CO₂ fluctuations?

It employs dual-phase vacuum stabilization followed by time-resolved NDIR measurement over a user-defined interval (10–35 s), rejecting transient signals via slope-based algorithmic filtering and referencing against baseline chamber CO₂ levels prior to vacuum application.

Is calibration traceable to national standards?

Yes—factory calibration uses NIST-traceable CO₂ reference gases; field recalibration kits (PN: LP3-CAL-KIT) include certified gas standards and documented uncertainty budgets per ISO/IEC 17025.

Can the device be integrated into an Industry 4.0 production monitoring system?

Absolutely—the Ethernet port supports Modbus TCP and HTTP API protocols for real-time status polling, remote method loading, and event-triggered data push to SCADA or cloud analytics platforms.

What environmental conditions affect measurement reliability?

Ambient CO₂ must remain below 1500 ppm (recommended); operation outside +5 °C to +35 °C or in condensing humidity (>90% RH) invalidates sensor response linearity and voids compliance with ISO 2954:2020 (gas analyzer performance criteria).

Does the LeakPointer 3 require consumables or periodic sensor replacement?

No—the NDIR sensor has a rated service life of ≥5 years under normal use; only annual verification with certified gas is required per manufacturer’s maintenance schedule and ISO 9001 clause 7.1.5.