The Electrolyser Gas Analyser is a high-precision gas chromatography (GC) system specifically developed for monitoring gas purity in hydrogen production processes. Designed for modern electrolyser installations, the analyser provides fast and reliable measurement of oxygen in hydrogen (O₂ in H₂) and hydrogen in oxygen (H₂ in O₂), ensuring safe operation, product quality, and process efficiency.
Utilizing proven Gas Chromatography with Thermal Conductivity Detection (GC-TCD) technology, the system delivers accurate measurements from ppm to percentage levels with excellent repeatability and long-term stability. Depending on the analytical requirement, helium or hydrogen can be used as carrier gas for oxygen analysis, while nitrogen or argon is used for hydrogen analysis. The analyzer supports independent monitoring of both anode and cathode gas streams or combined sampling configurations for comprehensive process evaluation.
To ensure reliable operation in demanding electrolyser environments, the system incorporates backflush column technology, preventing moisture from entering the analytical columns and maintaining stable separation performance. This design enables continuous operation even with gas streams saturated with water vapor, minimizing maintenance requirements and maximizing instrument uptime.
For applications requiring ultra-trace impurity analysis, the analyser can be equipped with an optional Pulsed Discharge Detector (PDD), extending detection capabilities from low ppm levels down to ppb concentrations. Additional configuration options allow the measurement of nitrogen, argon, water vapor, and other gases, providing a flexible platform that can adapt to evolving process requirements.
Built around the compact GAS CompactGC 4.0 platform, the analyser features dual TCD detectors, four capillary columns, heated valve ovens, and robust diaphragm valves designed for continuous 24/7 operation. With a runtime of less than one minute and compliance with ASTM D2504, the Electrolyser Gas Analyser is an ideal solution for hydrogen production facilities, energy applications, and industrial gas quality assurance programs.
Key benefits
Fast Analysis – Results in less than one minute for near real-time monitoring.
High Sensitivity – ppm-level detection with TCD and optional ppb-level performance using PDD.
24/7 Reliability – Engineered for continuous unattended operation.
Water-Tolerant Design – Backflush technology protects analytical columns from moisture.
Flexible Configuration – Expandable for additional gas components and sampling configurations.
Compact Footprint – Small 19″ rack-mounted design for easy integration.
Standards-Compliant – Designed according to ASTM D2504 requirements.
| Category | Specification |
|---|---|
| Application | Electrolyser gas purity analysis |
| Measured Components | O₂ in H₂, H₂ in O₂ |
| Analytical Technique | Gas Chromatography (GC) |
| Detector | Dual Thermal Conductivity Detector (TCD) |
| Optional Detector | Pulsed Discharge Detector (PDD) |
| Detection Range | ppm to % levels |
| Limit of Detection (TCD) | < 5 ppm |
| Limit of Detection (PDD) | ppb level |
| Analysis Time | < 1 minute |
| Carrier Gases | Helium or Hydrogen (O₂ analysis); Nitrogen or Argon (H₂ analysis) |
| Columns | Four capillary columns with backflush configuration |
| Valve System | Two heated 6-port diaphragm valves |
| Sample Inlets | Separate or combined anode/cathode inlets |
| Operation Mode | Continuous 24/7 operation |
| Water Handling | Suitable for moisture-saturated gas streams |
| Additional Components (Optional) | Nitrogen, Argon, Water Vapor Analysis |
| Data System | Chromeleon™ CDS |
| Instrument Platform | GAS CompactGC 4.0 |
| Compliance Standard | ASTM D2504 |
| Footprint | Compact 19-inch rack format |
Electrolyser Gas Purity Monitoring
Continuous measurement of oxygen in hydrogen and hydrogen in oxygen to ensure safe and efficient electrolyser operation.
Anode & Cathode Stream Analysis
Independent or combined monitoring of electrolyser gas streams for performance evaluation and process optimization.
Safety Compliance & Leak Detection
Detection of cross-contamination between hydrogen and oxygen streams at ppm levels to prevent hazardous operating conditions.
Hydrogen Production Quality Assurance
Verification of hydrogen purity for industrial, mobility, energy storage, and fuel cell applications.
Process Optimization
Real-time gas composition analysis to improve electrolyser efficiency, stability, and production consistency.
Industrial & Energy Applications
Suitable for green hydrogen production facilities, power-to-gas systems, renewable energy projects, and industrial gas plants
- ASTM D2504 – Standard Test Method for Trace Hydrogen and Oxygen Analysis in Electrolyser Gas Streams
