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PEM electrolyser

Level and pressure measurement in the PEM electrolyser

Process data

Measuring task:
Level and pressure measurement
Measuring point:
Tank, pipeline
Measuring range up to:
1 m, 40 bar
Medium:
Ultrapure water, oxygen or hydrogen
Process temperature:
0 … +70 °C
Process pressure:
0 … +40 bar
Special challenges:
Oxygen and hydrogen gasses

Application

In the electrolyser, renewable energy is used to split water (H2O) into its individual components hydrogen (H) and oxygen (O). Green hydrogen is thus produced in a CO2-free cycle. The PEM electrolyser, uses a proton exchange membrane that is continuously flushed with ultrapure water. An electrical potential causes protons to migrate through the membrane. Hydrogen is produced on the cathode side and oxygen on the anode side. On the oxygen side, level measurement is used to regulate the ultrapure water. On the hydrogen side, it monitors the excess water. The pressure sensors monitor the pressure in the feed line on the oxygen side and in the discharge line on the hydrogen side.

Your benefit

Reliable
Reliable measurement even with oxygen and hydrogen gasses
Cost effective
Precise measuring results for efficient regulation of the process
User friendly
Direct installation in small tanks with internal structures

Recommended products

Solution 1
Solution 2

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