Accurate Anode Recirculation Control
Precise control of anode recirculation is essential for the efficiency and longevity of PEM fuel cells. By accurately regulating hydrogen recirculation, fuel utilization can be maximized, water accumulation can be reduced, and the system’s lifespan can be extended.
Benefits of Advanced Sensor Technologies
Allengra’s hydrogen flow meter is designed to provide comprehensive data for optimal anode management. The device measures volumetric and mass flow, temperature, pressure, humidity, and the concentrations of hydrogen, nitrogen, and water vapor. These parameters are transmitted along with diagnostic data via the integrated CAN bus and Modbus interfaces.
- Measures hydrogen flow and gas composition in real-time
- Provides comprehensive data for optimal anode management
- Accurate volumetric and mass flow measurements
Robust and Reliable Measurement Under Extreme Conditions
The sensor is designed for operation at temperatures up to 85 °C and pressures up to 16 bar. It can even tolerate liquid water droplets to some extent, ensuring reliable measurement even in harsh environments. The robust housing, made of highly resistant stainless steel 316L, guarantees long-term compatibility with the humid hydrogen-nitrogen mixture.
| Temperature | Pressure | Humidity |
|---|---|---|
| Up to 85 °C | Up to 16 bar | Up to 100% relative humidity |
Adaptable for Different Applications
The hydrogen flow meter is available in two versions to meet different requirements:
- DN15 for flow rates from 10-1000 L/min
- DN20 for 20-1700 L/min
Both models are only 173 mm long and feature standard threaded connections for easy integration.
Maximum Efficiency and Longevity for PEM Fuel Cells
The advanced features of the hydrogen flow meter make it an essential component of PEM fuel cells. By precisely measuring hydrogen flow and gas composition, it optimizes anode recirculation control, ensures an ideal hydrogen-nitrogen ratio, and maximizes efficiency.
Innovation and Sustainability in Focus
Allengra implements technological innovation in ultrasonic measurement principles for sustainable hydrogen propulsion systems. The hydrogen flow meter enables more efficient hydrogen utilization, supporting the shift to green energy solutions.
Versatile Applications
The hydrogen flow meter has various applications in:
- Automotive – particularly heavy-duty trucks, but also passenger cars
- Stationary applications – such as backup power supplies and decentralized energy networks
- Aviation – hydrogen-powered propulsion systems
Meet Allengra at hy-fcell Canada 2025
Allengra’s hydrogen flow meter will be presented for the first time in North America at hy-fcell Canada 2025, held June 4-5 at the Vancouver Convention Centre East. Visit Booth #109 in the German Pavilion to explore live demos and talk to our experts.
About Allengra
Allengra GmbH specializes in the development and production of ultrasonic flow sensors and control valves suitable for both high-end products and cost-efficient mass-production solutions. With extensive engineering expertise and prototyping capabilities, innovative ideas are quickly transformed into market-ready products.
“Allengra’s hydrogen flow meter is a game-changer for PEM fuel cell applications. Its advanced features and robust design make it an essential component for optimizing anode recirculation control and maximizing efficiency.” – Dr.
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