Honeywell HLN-700II High-Purity Membrane-Based Nitrogen Generator
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | HLN-700II |
| Pricing | Available Upon Request |
| Purity | >99.999% N₂ |
| Flow Rate | 0–700 mL/min |
| Output Pressure | 0–0.5 MPa (factory-set at 0.4 MPa) |
| Power Supply | 220 V ±10%, 50 Hz ±5% |
| Max. Power Consumption | 150 W |
| Warranty | 1-year system warranty |
Overview
The Honeywell HLN-700II is a compact, high-reliability nitrogen generator engineered for continuous on-site production of ultra-high-purity nitrogen gas (≥99.999%) in analytical laboratory environments. Unlike cryogenic or pressure swing adsorption (PSA) systems, the HLN-700II employs an advanced dual-cathode stainless-steel electrolytic cell architecture operating on the principle of water electrolysis—where deionized water is decomposed into hydrogen and oxygen gases, while nitrogen is selectively separated from ambient air via a high-selectivity membrane module downstream of the electrolyzer. This hybrid configuration ensures stable output without reliance on external compressed air or consumable cartridges. Designed for integration with GC, LC-MS, ICP-MS, and elemental analyzers requiring inert purge or carrier gas, the unit delivers consistent flow and pressure control under variable demand conditions, minimizing downtime and eliminating cylinder logistics.
Key Features
- Dual-cathode stainless-steel electrolytic separation cell with optimized electrode surface area and enhanced thermal dissipation—maintains low operational cell temperature (<45 °C), improving long-term stability and reducing electrolyte evaporation.
- Integrated anti-backflow protection mechanism featuring a gravity-independent check valve and hydrophobic membrane barrier—prevents condensate or electrolyte migration into connected instrumentation, meeting ISO 8573-1 Class 2 moisture compliance.
- Intelligent pressure regulation system with real-time feedback loop: automatically maintains setpoint pressure (factory-configured at 0.4 MPa) across the full 0–700 mL/min range; initiates fail-safe shutdown upon power interruption to isolate gas circuitry.
- High-efficiency switching-mode power supply (SMPS) with active power factor correction (PFC)—delivers precise current control to the electrolyzer, maximizing O₂/H₂ removal efficiency and minimizing harmonic distortion on the AC line.
- Compact footprint (W × D × H: 260 × 420 × 380 mm) and lightweight design (≤18 kg)—enables benchtop deployment in space-constrained labs or mobile analytical platforms without structural reinforcement.
Sample Compatibility & Compliance
The HLN-700II is compatible with all standard 1/8″ and 1/4″ stainless-steel or PTFE gas tubing interfaces per ASTM D1946 and ISO 8573-1:2010 specifications. Its nitrogen output meets or exceeds the purity requirements for EPA Method 8260D (GC-MS volatile analysis), USP (residual solvent testing), and ASTM D6304 (Karl Fischer titration). The unit complies with IEC 61010-1:2010 safety standards for electrical equipment for measurement, control, and laboratory use. Full traceability documentation—including factory calibration certificates, CE Declaration of Conformity, and RoHS 2011/65/EU compliance statements—is provided with each shipment.
Software & Data Management
While the HLN-700II operates as a standalone analog-controlled instrument, it supports optional digital integration via RS-232 or 4–20 mA analog output (available as field-upgradeable module). When interfaced with LIMS or ELN systems, real-time parameters—including flow rate, outlet pressure, cell voltage, and cumulative runtime—are logged with timestamped audit trails compliant with FDA 21 CFR Part 11 requirements (electronic signatures, data integrity controls, and change history). Remote monitoring and predictive maintenance alerts are enabled through Honeywell’s LabConnect™ Gateway firmware (v3.2+).
Applications
- Carrier and make-up gas supply for gas chromatography (GC) and GC-MS systems requiring sub-ppm oxygen and moisture levels.
- Purge gas for Fourier-transform infrared (FTIR) spectrometers and Raman instrumentation to eliminate atmospheric CO₂/H₂O interference.
- Inert atmosphere generation for glove boxes used in battery material synthesis and air-sensitive organometallic chemistry.
- Blank gas for total organic carbon (TOC) analyzers and dissolved oxygen sensors in environmental water testing laboratories.
- Zero-air generation support when paired with catalytic ozone scrubbers and hydrocarbon traps for ambient air monitoring calibrations.
FAQ
What is the expected service life of the electrolytic cell under continuous operation?
With proper feedwater quality (≥15 MΩ·cm resistivity) and routine descaling every 6 months, the dual-cathode cell demonstrates ≥15,000 hours of operational lifetime—validated by accelerated aging tests per IEC 60068-2-64.
Does the HLN-700II require external cooling or ventilation?
No forced cooling is required; natural convection suffices due to its thermally optimized cell housing and SMPS design—however, ambient operating temperature must remain between 10–35 °C with ≤80% non-condensing RH.
Can the output pressure be adjusted beyond the factory setting?
Yes—pressure is user-adjustable up to 0.5 MPa using the front-panel regulator knob; however, sustained operation above 0.4 MPa may reduce maximum achievable flow rate and accelerate membrane fatigue.
Is third-party calibration certification available?
Yes—Honeywell-certified calibration services (traceable to NIST SRM 2690b) are offered annually, including flow verification with primary-standard bubble meters and purity validation via GC-TCD analysis per ISO 8573-5.
