Glass rotor flowmeter selection instructions

The characteristics of glass rotor flowmeter are obvious, with simple structure, operation, simple installation, low price, intuitive reading, etc. It is widely used in many fields of industry and can be seen everywhere.

Although the glass rotor flowmeter is simple, it is also necessary to distinguish which type is more suitable when selecting the type and which parameters should be used to select the type.

The principle of glass rotor flowmeter can be found on the Internet. Simply put: the glass rotor flowmeter mainly consists of a conical glass tube that expands from bottom to top and a float that moves up and down with the flow rate. When the fluid flows through the conical tube from bottom to top, the kinetic energy of the fluid generates lift S on the float and the buoyancy A of the fluid to make the float rise. When the sum of the lift S and the buoyancy A is equal to the float's own weight G, the float is in balance and stabilized at a certain height. The scale on the conical tube indicates the flow value of the fluid.

After understanding the principle of glass rotor, you also need to understand the types of glass rotor flowmeters, ordinary type, corrosion-resistant type, micro-flow type or high-temperature type, etc. Of course, some flowmeters also have multiple connection methods, such as flange type, pipe thread connection, hose connection, clamp connection, etc.

Of course, just knowing these is definitely not enough for selection, and selection requires various parameters.

1. Flow range: The flow range is mainly used to determine the size of the caliber of a flowmeter, because any flowmeter has to withstand pressure and maximum flow. It is not the case that the larger the flow rate, the better. This also involves a problem of accuracy, so the correct flow selects the correct caliber.

2. The object of measurement. This refers to the type of medium, pressure size, chemical properties, etc. Some medium fluids will be corrosive such as acid and alkali. In this case, anti-corrosion treatment must be done to produce corrosion-resistant flowmeters.

3. In fact, there is another point of selection based on price. The flowmeter has a problem of high and low accuracy. The higher the accuracy of the flowmeter, the higher the price. You can decide based on your own needs. For example, laboratory research flowmeters require preparation. Products under the same model will be much more expensive than ordinary ones. (end)