AS820 Portable Hydrogen Comprehensive Analyzer
| Origin | Italy |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | AS820 |
| Price | USD 2,150 (FOB) |
Overview
The AS820 Portable Hydrogen Comprehensive Analyzer is an engineered field-deployable instrument designed for simultaneous, real-time measurement of hydrogen dew point (moisture), hydrogen purity (H₂ concentration in air, CO₂, or N₂ matrices), and oxygen concentration in hydrogen-rich gas streams. Built upon thermal conductivity detection (TCD) for H₂ and O₂ quantification, coupled with a chilled-mirror dew point sensor with frost-point compensation for moisture analysis, the AS820 integrates three critical gas quality parameters into a single, compact platform—eliminating the need for multiple standalone analyzers during on-site commissioning, maintenance, or safety audits of hydrogen production, storage, refueling stations, PEM electrolyzers, and fuel cell test benches. Its architecture adheres to fundamental physical measurement principles: thermal conductivity differentials enable selective H₂ and O₂ detection under variable background gases; the thermoelectrically cooled mirror sensor provides trace-level water vapor quantification via optical condensation detection with automatic pressure compensation and auto-calibration routines.
Key Features
- Triple-parameter measurement engine: Integrated TCD-based H₂ purity & O₂ concentration module + temperature-compensated chilled-mirror dew point sensor with frost-point correction
- Field-serviceable calibration: On-site zero/span adjustment supported for all three channels without external hardware—validated against certified gas standards per ISO 6142
- Dual-power operation: Internal rechargeable Li-ion battery (≥8 h continuous runtime) + universal AC/DC input (100–240 VAC, 50/60 Hz) with overcharge protection circuitry
- Robust sampling interface: Integrated stainless-steel sintered filter (5 µm pore size), precision pressure regulator (0–1.0 MPa range), and laminar flow controller (0.2–0.9 L/min)
- High-fidelity human-machine interface: 7-inch true-color TFT-LCD touchscreen (800 × 480 resolution) with bilingual (English/Chinese) menu navigation and intuitive icon-driven workflow
- Data integrity architecture: Local storage of up to 128 timestamped measurement records with UTC synchronization; USB 2.0 port for direct export to FAT32-formatted USB drives
- Environmental resilience: Operating temperature range −30 °C to +60 °C; storage range −40 °C to +70 °C; IP65-rated enclosure for dust/water resistance during outdoor deployment
Sample Compatibility & Compliance
The AS820 supports direct sampling from pressurized hydrogen systems (up to 1.0 MPa), ambient air, nitrogen blankets, and CO₂ carrier streams. It meets IEC 61000-6-2 (EMC immunity) and IEC 61000-6-3 (EMC emission) standards. Sensor response characteristics comply with ASTM D7267 for dew point measurement in compressed gases and ISO 8573-3 for moisture content classification. For regulated environments—including pharmaceutical hydrogen supply lines and hydrogen fuel infrastructure—the device supports audit-ready data logging with user-accessible timestamps and configurable pass/fail thresholds aligned with ISO 14644 cleanroom classifications and U.S. DOE Hydrogen Safety Best Practices guidelines.
Software & Data Management
No proprietary PC software is required for basic operation. All configuration, calibration, and data review occur natively on-device. Measurement records include full metadata: date/time stamp, ambient temperature/pressure, sensor status flags, and operator ID (optional entry). Exported CSV files are compatible with LIMS platforms and Excel-based QA/QC reporting. While not FDA 21 CFR Part 11 compliant out-of-the-box, the AS820’s deterministic firmware design enables integration into validated workflows when deployed with documented SOPs and electronic signature protocols managed externally.
Applications
- Hydrogen production facilities: Real-time monitoring of PEM electrolyzer outlet gas quality (H₂ purity, O₂ crossover, moisture carryover)
- Fuel cell vehicle refueling stations: Pre-fill verification of ISO 8573-8 Class 2 moisture compliance and O₂ contamination limits (<10 ppmv)
- Power-to-gas infrastructure: In-line validation of hydrogen blending ratios in natural gas grids
- Research laboratories: Multi-parameter characterization of catalyst purge gases, membrane permeation studies, and electrochemical cell off-gas analysis
- Industrial maintenance: Leak detection support via O₂ ingress mapping and dew point trending across piping networks
FAQ
Does the AS820 require periodic factory recalibration?
No—field calibration using certified reference gases is fully supported. Annual verification against traceable standards is recommended per ISO/IEC 17025 laboratory practice.
Can the dew point sensor measure below −80 °C?
The specified lower limit is −80 °C dew point; measurements at lower values are physically constrained by mirror freezing dynamics and are not supported.
Is the H₂ purity sensor cross-sensitive to CO or CH₄?
Yes—thermal conductivity sensors exhibit inherent interference from other low-molecular-weight gases. The AS820 includes matrix-specific calibration modes (air, CO₂, N₂) to minimize error propagation.
What is the maximum allowable particulate load in the sample stream?
The integrated stainless-steel sintered filter (5 µm rating) protects internal components; upstream particulate filtration to ≤1 µm is advised for extended sensor life in dirty industrial streams.
Can measurement data be synchronized with SCADA systems?
Not natively—RS-485 or Modbus RTU output is not available. Integration requires external PLC-based data acquisition interfacing via analog 4–20 mA outputs (optional accessory).
