SCIWAY Y-HN Integrated Nitrogen Generator

Overview

The SCIWAY Y-HN Integrated Nitrogen Generator is an engineered solution for on-demand, high-purity nitrogen supply in analytical laboratories, QC environments, and small-scale industrial applications. It employs a dual-bed Pressure Swing Adsorption (PSA) process—based on proprietary composite molecular sieves—to selectively adsorb oxygen, moisture, CO₂, and trace hydrocarbons from compressed ambient air. Unlike membrane-based or cryogenic systems, PSA delivers consistent ≥99.999% nitrogen purity (measured by electrochemical oxygen sensor verification) without reliance on liquid nitrogen or high-pressure cylinders. The system integrates all core subsystems—including air compression, refrigerated drying, multi-stage filtration, adsorption towers, buffer storage, and intelligent control—into a single compact footprint. Designed for continuous unattended operation, it eliminates gas logistics, cylinder handling hazards, and purity variability associated with bulk delivery, supporting method-compliant workflows under ISO/IEC 17025, USP , and ASTM D6866-22 requirements.

Key Features

• Integrated oil-free scroll air compressor (imported) delivering stable feed air at ≤0.7 MPa, eliminating lubricant contamination risk and reducing maintenance intervals.
• Refrigerated air dryer co-located within the main chassis achieves −68°C pressure dew point—meeting ISO 8573-1 Class 2.2.1 for compressed air quality prior to PSA processing.
• Dual-tower PSA architecture with SCIWAY’s proprietary composite carbon molecular sieve (CMS), optimized for O₂ removal kinetics and extended service life (>20,000 hours under nominal load).
• 304 stainless steel construction for nitrogen storage tank and adsorption towers ensures corrosion resistance, leak integrity, and compliance with GMP cleanroom material compatibility standards.
• Embedded controller with real-time display of flow rate, outlet pressure, O₂ residual level (<1 ppm), dew point, and system status; supports event logging and alarm history with timestamped records.
• Modular filtration train: pre-filter (1 µm), coalescing filter (0.01 µm, 99.99% efficiency), and activated carbon polishing stage—certified to ISO 8573-1 Class 1.2.1 for particulate, water, and oil aerosol removal.
• Heavy-duty swivel casters with locking brakes enable repositioning on laboratory floors without structural anchoring or dedicated utility pads.

Sample Compatibility & Compliance

The Y-HN generator supplies nitrogen suitable for GC carrier gas, LC-MS purge gas, sample preparation blanking, glove box inerting, and elemental analyzer combustion support. Its output meets or exceeds the gas quality specifications required by major instrument OEMs including Agilent, Thermo Fisher Scientific, Shimadzu, and PerkinElmer. All critical parameters—including purity, dew point, and hydrocarbon content—are continuously monitored and logged, enabling full traceability for GLP/GMP audits. The embedded controller supports optional RS-485 Modbus RTU or Ethernet TCP/IP interfaces for integration into centralized lab infrastructure monitoring platforms. System firmware complies with IEC 62443-3-3 security baseline for industrial control systems.

Software & Data Management

The Y-HN operates via a self-contained embedded controller with no external PC dependency. Firmware includes configurable alarm thresholds (e.g., O₂ >1 ppm, dew point >−60°C), automatic tower switching logic, and fault-condition lockout with diagnostic codes. Event logs retain ≥10,000 entries with date/time stamps, accessible via USB export or optional web interface (firmware v2.3+). Audit trail functionality satisfies FDA 21 CFR Part 11 requirements when paired with user-access-controlled administrator login (password-protected configuration mode). Data export formats include CSV and PDF reports compatible with LIMS integration.

Applications

• Gas Chromatography (GC) carrier and detector make-up gas, particularly for ECD, TCD, and FID systems requiring ultra-low O₂ and moisture.
• LC-MS and ICP-MS desolvation and nebulization gas where hydrocarbon-free nitrogen prevents background interference and source fouling.
• Elemental analyzers (CHNS/O) requiring inert purge during thermal decomposition cycles.
• Blank preparation in trace metal analysis (ICP-MS, AAS) to minimize atmospheric contamination.
• Small-volume glove boxes and anaerobic chambers requiring continuous inert atmosphere maintenance.
• R&D labs performing catalyst testing, polymer synthesis, or battery material characterization under controlled N₂ environments.

FAQ

What is the maximum recommended operating duty cycle?
The Y-HN is rated for continuous 24/7 operation at ≤100% flow capacity; however, optimal sieve longevity is achieved at sustained loads ≤80% of max rated flow (i.e., ≤1.6 L/min).

Does the system require external cooling water or ventilation?
No. The integrated refrigerated dryer uses air-cooled condenser technology; only standard ambient lab ventilation (≥20 ACH) is required—no chilled water connection needed.

How often must the molecular sieve be replaced?
Under typical lab conditions (clean intake air, proper pre-filtration), sieve replacement interval is ≥3 years or 20,000 operational hours—validated via periodic O₂ residual testing per ASTM D6866-22 Annex A3.

Can the generator be connected to multiple instruments simultaneously?
Yes—provided total downstream demand remains within 0–2 L/min and pressure drop across distribution lines does not exceed 0.1 MPa; use 1/4″ SS tubing and calibrated needle valves for balanced allocation.

Is third-party calibration certification available?
SCIWAY provides factory calibration certificates traceable to NIST standards; optional UKAS-accredited calibration services are available through authorized regional partners upon request.