Flow meter selection
Thread Content
How to select a flow meter for a fluid with a solid content of 20%? Those with experience using it, please share your insights. Thank you!
Electromagnetic flowmeters with high-frequency excitation can be used for measurement.
Thank you! Fluids do not conduct electricity, so electromagnets cannot be used
Doppler ultrasonic flow meters can be considered
It tends to be of the differential pressure type, with a small throttling element
I’m not sure what this solid is like. I have successful experience using vortex flowmeters to measure slurries containing solids in PTA plants; over a period of almost a year, the measurement results were quite consistent with those obtained using electromagnetic flowmeters on the same pipelines, which was beyond my expectations as well as those of the users
Choose a venturi or a nozzle? It’s possible, but since there are solids present, an isolation fluid needs to be added… Ultrasound? It should be impossible to measure when solids are present… It’s not that using a vortex street sensor is unacceptable, but garbage-induced vortex streets make measurement even more difficult. What is the pipe diameter? What medium? Are there any requirements regarding pressure loss? With these available, I can give you some suggestions.
You can choose the Yokogawa mass flow meter, the AXF series
New patented product from A+K: annular wedge flow meter. Its accuracy is 0.5% higher than that of the wedge type, with a repeatability of 0.15%; the measurement range is 10:1. The design aims to create a funnel effect in the flow field to prevent blockages, and as long as the medium has a stable density and viscosity, there are no major issues with measurements.
Either wedge or venturi flowmeters can be used; the pressure tap should be positioned upward, a diaphragm-type transmitter should be employed, and a flushing ring should be included along with flushing water.