Huayisanpu PGN-30LB High-Pressure Nitrogen Generator

Overview

The Huayisanpu PGN-30LB High-Pressure Nitrogen Generator is an engineered solution for continuous, on-demand nitrogen supply in analytical laboratories requiring stable, high-flow gaseous nitrogen at elevated pressure. It operates on the principle of hollow-fiber membrane separation—a mature, non-cryogenic, and maintenance-light technology that selectively permeates oxygen, water vapor, and CO₂ from compressed air while retaining nitrogen molecules. The feed gas is generated by a dual-stage, low-vibration air compressor system with integrated thermal management and automatic condensate drainage. Compressed air is first purified through coalescing and activated carbon filters to remove oil aerosols, particulates, and hydrocarbons, then dried to a dew point of ≤ −45 °C prior to membrane exposure—ensuring consistent purity across the full 0–30 L/min flow range. Designed specifically for LC-MS, GC carrier gas, sample preparation purging, and inert atmosphere applications, the PGN-30LB eliminates reliance on high-pressure cylinders, reducing safety hazards, logistical overhead, and long-term operational cost per liter of N₂.

Key Features

• High-efficiency hollow-fiber membrane module with extended service life and stable performance under continuous load
• Dual-compressor architecture with custom-engineered vibration damping and acoustic insulation—noise output ≤ 60 dB(A)
• Stainless steel air storage tank (304 grade) with ASME-compliant pressure vessel design and integrated safety relief valve
• Multi-stage gas purification: pre-filter (5 µm), coalescing filter (0.01 µm), desiccant dryer, and final particulate filter (< 0.01 µm)
• Microprocessor-based control system with dual protection: overpressure shutdown (≥ 1.0 MPa) and overcurrent cutoff (≥ 120% rated current)
• Auto-drain solenoid valve with programmable timer and visual condensate level indicator
• Integrated pressure regulation and flow stabilization—output pressure adjustable from 0 to 0.76 MPa (110 psi) with mechanical lockable regulator
• Front-panel digital pressure gauges for both air reservoir and nitrogen outlet; analog flowmeter with calibrated 0–30 L/min scale

Sample Compatibility & Compliance

The PGN-30LB delivers nitrogen suitable for ISO 8573-1 Class 2:2:2 compressed air quality standards when operated within specified ambient conditions (≤ 45 °C, ≤ 80% RH). Its output meets ASTM D6352-17 requirements for nitrogen used in liquid chromatography–mass spectrometry (LC-MS) mobile phase sparging and electrospray ionization (ESI) gas supply. While not certified to FDA 21 CFR Part 11 out-of-the-box, the unit supports GLP/GMP workflows via audit-ready manual logs, timestamped operation records, and configurable runtime counters. All electrical components comply with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity). The stainless steel wetted path and absence of catalysts or consumable adsorbents ensure compatibility with trace-metal-sensitive applications in environmental, pharmaceutical, and food testing labs.

Software & Data Management

The PGN-30LB is a stand-alone hardware platform without embedded firmware-based data logging or network connectivity. Operational parameters—including cumulative runtime, compressor cycle count, and last auto-drain event—are tracked via mechanical hour meter and user-maintained logbook. For integration into laboratory information management systems (LIMS), optional analog 4–20 mA pressure/flow output signals can be configured (upon request) to interface with third-party SCADA or PLC controllers. All calibration and maintenance procedures are documented in the bilingual (English/Chinese) operator manual, which includes traceable filter replacement intervals, torque specifications for service points, and diagnostic flowcharts aligned with ISO/IEC 17025 troubleshooting guidelines.

Applications

• LC-MS nitrogen supply for nebulizer and drying gas (ESI/APCI sources)
• GC carrier and make-up gas for FID, TCD, and ECD detectors
• Inert blanketing during solvent evaporation, lyophilization, and reagent handling
• Nitrogen purge for FTIR sample compartments and XRD sample stages
• Controlled-atmosphere packaging validation and stability chamber conditioning
• Calibration gas dilution systems requiring stable, low-hydrocarbon N₂
• Field-deployable nitrogen source for mobile analytical units (e.g., forensic vans, environmental monitoring trailers)

FAQ

What is the recommended ambient operating temperature for optimal nitrogen purity?
For sustained 99.9% purity at ≥ 20 L/min, ambient temperature should remain ≤ 30 °C and relative humidity ≤ 60%. Higher ambient moisture increases membrane water vapor loading, potentially reducing separation efficiency.

Can the unit be installed in an enclosed cabinet?
No. Minimum 30 cm clearance is required on all sides for convective cooling. Enclosed installation voids warranty and risks thermal shutdown due to inadequate heat dissipation from the compressor and membrane stack.

Is routine filter replacement required—and how often?
Yes. Pre-filters require replacement every 2,000 hours or 12 months (whichever occurs first); desiccant cartridges every 4,000 hours or 24 months. Filter service intervals are logged in the maintenance section of the manual and marked on the filter housing.

Does the generator support remote start/stop or alarm signaling?
Standard configuration includes only local power switch and manual valves. Optional dry-contact alarm outputs (for low N₂ pressure, high temperature, or filter clogging) are available as factory-installed accessories upon order specification.

What certifications does the unit hold for international shipment?
It carries CE marking per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), plus RoHS 2011/65/EU compliance documentation. Export-ready packing includes UN-certified wooden crate with desiccant and humidity indicator cards.