Gas Purging System

Advanced Gas Purging and Nitrogen Inerting Systems for Industrial and Defense Applications Reliable gas purging is critical for protecting sensitive equipment and ensuring operational safety. Gas purging systems and nitrogen purging systems provide controlled delivery of inert gas for laser gas purging, defense laser purging, and industrial gas purging applications. High-purity solutions, including high-purity nitrogen systems, nitrogen cylinder manifolds, and multi-stage gas filters, ensure effective laser optics inerting and contamination-free operations. Modern systems integrate PLC purge control, automated gas purge, and remote purge control for precise management of flow and pressure. Components such as gas manifold systems, pressure regulation systems, gas purge panels, and precision filtration systems enable safe operation up to 200 bar gas purge capacity. Turnkey solutions, like DRDO gas purging systems and LASTEC nitrogen purge units, incorporate data-logging purge systems and laser beam purge systems, delivering comprehensive monitoring and repeatable performance. These inerting systems ensure safety, reliability, and efficiency across defense, research, and industrial applications.

About

Neometrix’s Gas Purging System is a turnkey, defense-qualified solution designed to supply ultra-high-purity nitrogen to laser systems at LASTEC, DRDO. It combines a four-cylinder, 200 bar gas manifold with dual-stage mechanical pressure reduction and precision filtration (2 μm primary and 0.1 μm secondary) to deliver ≥ 99.999 % dry, oil-free nitrogen with stable ±1 bar control. A PLC-driven automatic control panel with touchscreen HMI enables recipe-based purge profiles, real-time monitoring via 4–20 mA pressure transmitters, data logging, and remote diagnostics, while multi-stage relief valves and dedicated vent lines ensure safe overpressure protection and system depressurization. Ideal for inerting optical paths, protecting sensitive optics, and automated leak-testing cycles, this modular system supports uninterrupted, multi-shift operation, meeting rigorous safety and traceability standards in critical research and production environments.

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Technical Details

Specifications

Component	Details & Rationale
Ball Valves	½″ OD tube ports; ANSI Class 2500; Leakage Class IV ensures bubble-tight isolation, critical during maintenance when purging downstream components.
Filters	Primary (2 µm) for bulk particulate removal; Secondary (0.1 µm) for sub-micron purity, preventing nozzle blockage and optics damage in high-power lasers.
Pressure Transmitters	316L SS wetted parts; ≤0.5 % BFSL accuracy; UL/CSA/GOST approvals; factory-calibrated with certificate, ensuring traceable measurements over system life.
Relief Valves	Spring-loaded SS316, set at two stages (8 bar & 15 bar) to protect both low-pressure downstream and medium-pressure upstream circuits, triggering alarms and safe venting automatically.

Applications

Laser Beam Purging: Displaces air and moisture from beam-guiding tubes to maintain power density and prevent beam divergence.
Optics Protection: Creates an inert blanket over lenses and mirrors, extending service intervals by reducing oxidation and carbonization on critical surfaces.
Leak Testing & Maintenance: Automated purge-and-soak cycles for verifying system integrity after component replacement or preventive maintenance, with logged pressure-decay profiles for quality assurance.

FAQ

Details

Introduction
Neometrix’s Gas Purging System for LASTEC, DRDO is engineered to deliver ultra-high-purity nitrogen in defense-grade laser applications, where even trace oxygen or moisturecan degrade optical components and beam quality. Nitrogen, being inert, dry and oil-free, prevents oxidation of beam-guiding optics and removes particulate contaminants from the laser path, ensuring consistent cutting or machining performance.

System Overview
• Gas Manifold Module : Four × 80 L, 200 bar cylinders arranged for balanced draw-down and automatic change-over, minimizing downtime during cylinder swaps. Dedicated vent line allows safe depressurization and purging of residual gas without
system disassembly.
• Mechanical Control Panel : Multi-stage pressure reduction using ANSI Class 2500 ball valves and precision flow regulators maintains outlet pressure within ±1 bar of setpoint, critical for repeatable purge cycles. High-integrity primary (2 μm) and secondary (0.1 μm) SS316 filters remove particulates and trace moisture before gas enters the laser system.
• Automatic Control Panel : PLC-driven control with HMI touchscreen provides recipe management for purge profiles (ramp-up, dwell, ramp-down), data logging to USB or network, and remote diagnostics. Pressure transmitters (4–20 mA output, 0–200 bar range) and relief valves at 8 bar and 15 bar ensure overpressure protection and alarm generation.

Technical Specifications

Component
Details & Rationale

Ball Valves
½″ OD tube ports; ANSI Class 2500; Leakage Class IV ensures bubble-tight isolation, critical during maintenance when purging downstream components.

Filters
Primary (2 µm) for bulk particulate removal; Secondary (0.1 µm) for sub-micron purity, preventing nozzle blockage and optics damage in high-power lasers.

Pressure Transmitters
316L SS wetted parts; ≤0.5 % BFSL accuracy; UL/CSA/GOST approvals; factory-calibrated with certificate, ensuring traceable measurements over system life.

Relief Valves
Spring-loaded SS316, set at two stages (8 bar & 15 bar) to protect both low-pressure downstream and medium-pressure upstream circuits, triggering alarms and safe venting automatically.

Applications
• Laser Beam Purging : Displaces air and moisture from beam-guiding tubes to maintain power density and prevent beam divergence.
• Optics Protection : Creates an inert blanket over lenses and mirrors, extending service intervals by reducing oxidation and carbonization on critical surfaces.
• Leak Testing & Maintenance : Automated purge-and-soak cycles for verifying system integrity after component replacement or preventive maintenance, with logged pressure-decay profiles for quality assurance.

Key Features
• Extended Run-Time : Four high-capacity cylinders support multi-shift operations without manual intervention, reducing operational interruptions.
• On-Demand Purity : Dual-stage filtration and regulated flow ensure ≥ 99.999 % nitrogen purity at the point of use, matching laser manufacturer requirements.
• Recipe-Driven Automation : Pre-programmed purge sequences can be recalled in seconds, enhancing repeatability across test campaigns or production batches.
• Safety & Compliance : Built-in relief valves, vent lines and certified pressure transmitters ensure compliance with international pressure-equipment directives.

Conclusion
By combining robust mechanical design with advanced PLC-based automation and high-precision components, Neometrix’s Gas Purging System offers a turnkey, defense-qualified solution for laser applications at LASTEC, DRDO. Its modular construction, high-purity output and comprehensive safety features deliver the reliability and data-traceability demanded in critical research and production environments.