There are many kinds of flowmeters below. Each flowmeter has its advantages and disadvantages. The selection method and reference coefficient of the same type flowmeter are also different. Should be selected according to the actual use. Different types of flowmeters should be selected according to different performance and functions. Today, we summarize the selection of the following common flowmeters.

1. Turbine type: Turbine type flowmeter is widely used in the following measurement objects: petroleum, inorganic liquid, organic liquid, natural gas, liquefied gas, gas and low temperature fluid.

2. Ultrasonic flowmeter type: At present, it can only be used to measure fluids below 200 ° C. It is suitable for the flow measurement of all liquid highly corrosive, non-conductive, radioactive and flammable and explosive media.

3. Electromagnetic type: electromagnetic flowmeter to measure all kinds of acid, alkali, salt and other corrosive liquids; Various flammable and explosive media; All kinds of industrial sewage, pulp, mud, etc. However, it cannot be used to measure liquid media with very low conductivity, it cannot be used to measure gases, vapors and liquids containing a lot of gases, and it cannot be used to measure high temperature and high pressure fluids.

4. Vortex type: mainly used for flow measurement of industrial pipeline medium fluid, such as gas, liquid, vapor and other media. It is characterized by small pressure loss, large range, high accuracy, and is almost not affected by fluid density, pressure, temperature, viscosity and other parameters when measuring volume flow under working conditions.

5 Float type: This type of flowmeter can be used to measure the flow of liquid, gas, and steam, especially suitable for low flow rate and small flow medium flow measurement.

6. Coriolis force quality type: This type of flow meter is mainly used in petrochemical and other fields, and is one of the more extensive flow measurement instruments on the market at present.

7. Thermal (gas) mass type: This type of flowmeter is suitable for the measurement of single gas and fixed proportion multi-component gas.