Selection issues for solid-liquid flowmeters
Thread Content
Recently, I encountered a problem regarding the selection of a flow meter for a medium that is in a solid-liquid state. The solid content is 20%, with particle diameters of 200μm; the remainder is liquid, which is acidic with a pH value of 0.1–0.3. Its density is 1.08, its viscosity is 2, the operating temperature is 70°C, the pressure is 0.1 Mpa, and the pipe diameter is DN50. What type of flow meter would be suitable for this application? Both dual-rotor and target types have been considered, but they don’t work. I’m hoping fellow sailors can suggest some good alternatives; thank you!
This post was last edited by leit on 2019-3-21 10:31. Electromagnetic fields; use neoprene or fluorine-based materials (it depends on the type of acid, as some acids can corrode rubber). Tantalum electrode or platinum-iridium electrode. And what’s your normal data usage? However, the wear of the lining should be checked regularly.
Electromagnetic flowmeters are often installed on the feed pipes of centrifuges; they are used for handling solid-liquid mixtures； Select materials considering fluid corrosion and wear conditions
For conductive fluids and two-way flow, an electromagnetic flowmeter is a good choice.
Don’t be too happy with electromagnetic measurement in such working conditions. Haha. Pay attention to the selection of material and lining. Also, consider the reasonable values for pressure loss and diameter. For such operating conditions, it is recommended to select a model with a normal flow rate of 1~3 m/s.
I’m still worried that when measuring this medium, it might stick to the walls and adhere to the electrodes; in the case of profile measurement, since it’s an online process, it’s not easy to clean it off.
Isn’t the viscosity just 2? It’s basically the same as diesel. How can it stick to the wall? Even if it really sticks to the wall, use a capacitive electromagnetic flowmeter. However, in the above operating conditions, there will be no adhered electrodes.
This operating condition is not suitable for vortex flowmeters. Two phases with particles
I’m sorry, there’s one thing I forgot to mention: when the temperature drops, crystallization occurs, and the lower the temperature, the more severe the crystallization becomes
If that’s the case, then the pipeline should have heat tracing for insulation; if it does, there should be no problem with electromagnetic effects. Ultrasonic waves may also be applicable. The wedge shape is also okay.