Hydrogen Flow Meter
6Pages

Hydrogen Flow Meter For Fuel Cell Anode Inlet & Recirculation Overview Prototype Phase For Pure Hydrogen H2 and Hydrogen Mixtures Accuracy ± 3 % of measured value Mass Flow Determination Recirculation Concentration Determination H2-N2-H2O Stainless Steel Sensor Body CAN & Modbus Communication Integrated Temperature and Pressure Sensor Integrated Humidity Sensor optional Suitable for dry & wet gases up to 100 % RH Robust against impurities and dirt Operating conditions Media Pure Hydrogen H2, H2-N2-H2O Mixture others on request Operating temperature Operating pressure Burst pressure Operating humidity IP code Leakage rate -20 – 80 °C 0.8 – 20 bar(a) 30 bar(a) 0 – 100 % RH acc. to IP 44 ≤ 10 nccm/h Materials Wetted parts Stainless Steel 316L / 1.4404, Silica, FKM Non-wetted parts Features Mass Flow Determination Mass flow determination using ideal gas law based on measurements of volume flow, temperature, and pressure. Gas composition determination of H2-N2-H2O gas mixtures; ideal for PEM fuel cell anodic recirculation control. DATA SHEET | HYDROGEN FLOW METER | LANGUAGE EN | VERSIO

Hydrogen Flow Meter For Fuel Cell Anode Inlet & Recirculation Flow Measurement Accuracy funnel Ultrasonic 10 - 580 l/min ±3 % of measured value * ±1 % of measured value < 0.5 s Accuracy [% of m.v.] Measurement technology Volume Flow Range Volume Flow Accuracy Repeatability Response time * Accuracy specification per accuracy funnel, assuming turbulence-free flow conditions (refer to installation notes). Temperature Measurement Measurement element Measurement range Accuracy Repeatability Response time T09 Pressure Measurement Measurement element Measurement range Accuracy Repeatability...

Hydrogen Flow Meter For Fuel Cell Anode Inlet & Recirculation Mass Flow Determination Max. measurable mass / normal volume flow increases with higher medium pressure Mass Flow Accuracy Repeatability ±4 % of measured value ±1 % of measured value Gas Composition Determination Optional Method Ultrasonic Technology ▪ Hydrogen H2 – Nitrogen N2 / Water Vapor H2O ▪ Hydrogen H2 / Methane CH4 ±3% Volume [vol %] and Mass [wt %] fractions of each individual component ▪ PEM Fuel Cell Anode Recirculation ▪ Solid Oxide Fuel Cell fueled with H2-CH4 Accuracy Output Designated Applications others on request...

Hydrogen Flow Meter For Fuel Cell Anode Inlet & Recirculation Electrical data Power Supply Current consumption Electrical interface Cable length Electrical connection Interfaces Cable color-coding Pinout 1.0 m Open cable ends CAN, Modbus others on request VCC CAN Bus interface Standard Message Format Baud rate Termination Resistor ISO 11898-2 (High-Speed Applications) 2.0A (11 bit identifier) 1 Mbit/sec Open Modbus interface Baud rate Parity Stopbits Device ID 115200 Baud Parity: Even Stopbits: 1 Even 1 0x01 Data Points Standard ▪ Velocity [m/s] ▪ Volume Flow [l/min] ▪ Volume Flow in Normal...

Hydrogen Flow Meter For Fuel Cell Anode Inlet & Recirculation Dimensions Length Height Width Connection Installation notes Orientation Calming section Installable in any orientation Ensure accurate readings with a calming section upstream 5x ID and downstream 1x ID of the sensor. Select the pipe ID according to the sensor dimensions. DATA SHEET | HYDROGEN FLOW METER | LANGUAGE EN | VERSION 0.5 | RELEASED 2024.03.08

Hydrogen Flow Meter For Fuel Cell Anode Inlet & Recirculation Allengra GmbH, with headquarters in Germany and Romania, was established in 2005 and specializes in the design and production of standard or OEM ultrasonic flow sensors and control valves for liquids and gases, tailored to meet the specific needs of each end client application. Our company manages the entire development process, from concept to serial production, with various engineering departments and prototyping skills at our disposal. Die 2005 gegründete Allengra GmbH mit Sitz in Deutschland und Rumänien entwickelt und...