Selection of hydrogen flow meter
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Dear marine friends, I would like to ask what kind of flow meter is suitable for measuring hydrogen. Those who are already using one could share the type they have and how it performs in practice Our company has a flow meter for trade measurement; it operates at a pressure of over 10 kilograms and has a pipe diameter of DN150 mm. The hydrogen flow meter uses an A+K balanced flow meter, but its performance is only passable. I’m not sure which type is better for use below DN80?
The A+K balanced flow meter is a non-standard pressure tapping element; it is not advisable to use it for trade measurement. Orifice plates and similar devices can be used, as well as turbines, but regular calibration is required
For gas trade metering, it is recommended to use orifice plates; ideally, multi-parameter differential pressure transmitters that perform temperature and pressure compensation internally, with the transmitter outputting the flow signal directly. This makes things fairer, because the party taking over might not accept temperature and pressure compensation or open-loop operations in DCS.