Hydrogen is commonly used as an alternative fuel source in:
- Forklifts & lift trucks
- Power generation
- Commercial vehicles (buses, trucks, etc.)
Hydrogen gas presents difficulties when it comes to pressure sensors that needs to be considered when selecting the correct sensor configuration. Two of the most common sensor concerns in Hydrogen applications are hydrogen embrittlement and hydrogen permeation.
Hydrogen permeation occurs when hydrogen atoms (H2) split into two separate hydrogen ions (H+). This separation occurs under specific process conditions, commonly under high pressure and high temperature. These hydrogen ions are small enough to pass through the sensors thin metal diaphragm’s molecular structure.
Hydrogen embrittlement is the degradation of the mechanical properties of the sensor diaphragms metal resulting from direct contact with hydrogen. Correct material selection is ideal in combating hydrogen embrittlement. Common sensor materials such as 17-4 stainless steel and nickel-based alloys such as Inconel 718 should be avoided.
Core Sensors has a complete line of pressure sensors, transducers and transmitters designed to overcome these complications and provide a high quality/long life solution for your hydrogen application.