To measure the mass flow rate of oxygen, is there a suitable flow meter?
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To accurately measure the mass flow rate of oxygen, the pipeline has a DN25 diameter and experiences vibrations that cannot be eliminated; the flow rate is between 40 and 400 KG/H. Is there a suitable flow meter for this? Vortex streets don’t need to be considered.
This pipeline experiences vibration, and mass flow rate needs to be measured; only the HKTMF series of thermal gas mass flow meters can be used for this purpose.
For accuracy, Emerson mass flow meters are the first choice
If the pressure is not very low, a mass flow meter based on the Coriolis force principle can be used. If the composition remains essentially constant, a thermal mass flow meter can also be used. If the pressure fluctuates greatly and the composition is not constant, a vortex flow meter with high precision, combined with a gas density meter, can be used to measure mass flow rate (a flow calculator is required).
A mass flow meter will do the trick, right?
We need to check the amplitude of pipeline vibration and see if there are any ways to reduce it; our company has mass flow meters suitable for use with gases
The orifice plate flow meter is the best choice.
It’s not good that pipe vibration cannot be overcome using a mass flow meter; in my opinion, an orifice plate could be considered
A+K balanced flow meter, of the differential pressure type. It will definitely solve your problem.
1. Coriolis mass flow meters are sensitive to external vibration disturbances; although certain measures are taken to secure the flow sensor in place, it is recommended to use them with caution. 2. Thermal mass flow meters are more suitable for this operating condition. 3. In mechanical flow meters, gear flow meters can provide accurate measurement. 4. Types such as orifice plates, nozzles, and Venturi tubes have slightly lower precision.
To accurately measure oxygen at DN25/40-400 Kg/h, vortex flow meters and orifice plates are excluded. If a segmented thermal mass flow meter is chosen, it is necessary to determine whether DN25 is sufficient to handle a flow rate of 400 Kg/h. Our thermal mass flow meters can achieve a maximum reading of 80 Nm/s; for a DN25 size, this corresponds to a mass flow rate of 186 Kg/h, which is below 400 Kg/h. In such cases, it is necessary to increase the pipe diameter to DN40, with an accuracy of 1.0% FS. 2. If a Coriolis mass flow meter is used, the operating pressure of oxygen must be taken into consideration; calculations show that the operating pressure should be above 0.7 MPa. The DN25 diameter remains unchanged, with an accuracy of 1.0% R. As for pipe vibrations, soft isolators can be used before and after the flow meter to address this issue.