Discussion on the versatility of flow meters under various operating conditions
Thread Content
There are now many types of flow meters available for use in devices: Rosemount mass flow meters, E+H electromagnetic flow meters, Yokogawa vortex flow meters, Kaifeng orifice flow meters, Tianjin Smith turbine flow meters, Hefei Jingda elliptical gear flow meters and swirl flow meters. There are also wedge flow meters from Kaifeng Instruments, domestic target flow meters, and metal tube magnetic float flow meters. Seeing such a variety of flow meters, I suddenly wondered: if the pipe diameter is the same, the required flow range is similar, and the fluid is of the same phase (liquid, gas, or solid), then what if the temperature, pressure, and density of the medium change? Can these flow meters be used on other pipes? Will their accuracy still be guaranteed? Do their parameters need to be recalibrated? Next, I’ll offer my thoughts to stimulate further discussion – please share your own opinions! I hope everyone will share their opinions on the various flowmeters mentioned above. 1. Mass flow meter 2. Vortex flow meter 3. Turbine flow meter 4. Orifice flow meter, wedge flow meter 5. Progressive cavity flow meter 6. Target flow meter 7. Metal tube float flow meter 8. Elliptical gear flow meter
The selection of instruments should be as unified as possible to reduce the variety. However, each type of instrument has specific requirements regarding its conditions of use; since instruments are designed to serve the manufacturing process, it is necessary first to meet the requirements for measuring the process parameters.
The selection of different phases for various media also varies, as does the installation environment. So, under the given operating conditions, the range of available options becomes narrower and narrower, with only one or two options being suitable.
When the operating conditions change, the flow rate can be calculated using the conversion formula, and accuracy can still be maintained, right?
Can the same flow meter be used with media such as gasoline and diesel?
Just to get things started: 1. Mass flow meter: It can measure fluids in the same phase. In other words, if measuring gaseous fluids, different gas fluids can be measured, but when switching to measuring liquid fluids, the measurement parameters need to be adjusted. The same procedure applies in reverse. However, different liquids have different densities, and this parameter must be modified.
It would be better for the original poster to learn more about the principles of instruments and their measurement requirements before trying to understand these issues. Your question is too big and complex to answer clearly.
Hehe, there’s not much point in discussing this topic; it’s sufficient to focus on the design principles: functionality, safety, and cost-effectiveness.
Building 9#: “hfrs” is correct. To make good use of flow meters, it is necessary to take full account of two aspects: the characteristics of the flow meter itself and the properties of the fluid being measured (such as flow rate range, flow state, stability, etc.), as well as the physical properties of the fluid (such as viscosity, corrosiveness, crystallization tendency, impurities, etc.). At the same time, considerations regarding functionality, safety, and cost efficiency must also be taken into account when selecting, designing, installing, and using flow meters. Rather than simply considering issues such as changes in the flow range after medium replacement, as the original poster suggested, it means that there is indeed little point in discussing this topic.