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Industry Information
Proper application and maintenance of glass rotor flowmeters
2012-2-24 14:50:54


主要用于化工、石油、轻工、医药、化肥、化纤、食品、染料、环保及科学研究等各个部门中,用来测量单相非脉动(液体或气体)流体的流量。 Glass rotor flowmeter is mainly used in chemical, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dyes, environmental protection and scientific research and other departments to measure the single-phase non-pulsating (liquid or gas) fluid flow. Although there are many products for measuring flow, because of the advantages of simple structure, convenient operation, and low price, glass rotor flowmeters are welcomed by users. Especially small and medium-sized enterprises require low degree of automation. The leading product of traffic.


Glass glass rotor flowmeter is mainly used in chemical, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dye, environmental protection and scientific research and other departments to measure the flow rate of single-phase non-pulsating (liquid or gas) fluid. Anti-corrosive glass rotor flowmeter is mainly used to detect the flow of corrosive liquids and gaseous media, such as strong acids (except hydrofluoric acid), strong bases, oxidants, strong oxidizing acids, organic solvents and other corrosive gases or liquids Flow detection of media
The main measuring element of the glass rotor flowmeter is a vertically mounted lower and upper conical glass tube and a float that can move up and down inside. When the fluid passes through the conical glass tube from the bottom to the top, a pressure difference occurs between the upper and lower parts of the float, and the float rises under the action of this differential pressure. When this rising force, the buoyancy and viscous lift force of the float are equal to the gravity of the float, the float is in an equilibrium position. Therefore, there is a certain proportional relationship between the flow rate of the fluid flowing through the glass rotor flowmeter and the height of the float, that is, the flow meter area of the glass rotor flowmeter. The position height of the float can be used as a flow measurement.

玻璃转子流量计? How to use and maintain glass rotor flowmeter correctly?

I make a few suggestions:

1. When you get the glass rotor flowmeter, first observe whether the glass tube in the glass rotor flowmeter is intact, because the glass tube is easily damaged. The second is to remove the fixed part of the rotor and gently tilt it to see if the rotor can slide up and down freely. If you cannot slide freely, you need to gently vibrate the support plate so that it can generally slide. If you can no longer slide, you need to ask a professional technician to disassemble the machine.

2. When installing on the pipeline, first check whether the upstream and downstream pipelines are in a straight line. If it is not on a straight line, it will not only affect the measurement accuracy of the meter, but also damage the meter.

3. The first two points must be correct before they can be used. The operator should read the manual in detail before using it. When opening the valve, you must open it slowly. If it is estimated that the flow can float the rotor and the rotor does not move upwards, immediately stop the valve and continue to tap the pipe, so that the rotor can rise slowly. Many operators have opened the valve too fast and just installed new equipment. The sudden opening of the valve caused damage to the glass tube in the glass rotor flowmeter. This should be brought to the attention of the user.

4. Safe use. Some operators like to remove the front cover for use. This is not allowed because the glass tube is easy to burst and the cover plays a protective role. Therefore, you cannot remove the cover and use it.

5. Please keep warm during winter use. If you do n’t use it at night, be sure to let out the residual liquid in the flowmeter, so as not to freeze the glass tube.


相比金属管浮子流量计,在使用的温度和压力范围宽度上,大部分结构的浮子流量计,只能应用于自下而上的垂直流体的管道安装,玻璃管浮子流量计在制作工艺与价位上相比金属管浮子流量计要低很多。 Compared with the metal tube float flowmeter, the glass tube float flowmeter has a temperature and pressure range width. Most of the structure of the float flowmeter can only be applied to the bottom-up vertical fluid pipeline installation. The glass tube float flowmeter It is considered that the metal tube float flowmeter is much lower in the manufacturing process and price. But it ’s also very different in durability.
Glass tube float flowmeter is a type of variable area flowmeter.In a vertical cone tube that is enlarged from bottom to top, the gravity of the circular cross section of the float is supported by the liquid power. The float can be freely inside the cone tube. Rise and fall. It moves up and down under the action of flow velocity and buoyancy, and after balancing with the weight of the float, it is transmitted to the dial to indicate the flow through magnetic coupling.