Principle of glass rotor flowmeter | Which rotor flowmeter is good? Seeking recommendations?

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1. How to install and use a glass tube rotor flowmeter? The installation and use of a glass tube rotor flowmeter is still a rarely asked question, but it is a very good Q&A. If installed and used properly, not only can the scale flow rate of the flowmeter be accurately read, but it can also extend the service life of the glass tube rotor flowmeter. Let me talk about my understanding of the installation and use of a glass tube rotor flowmeter. Firstly, lets understand the characteristics of a glass tube rotor flowmeter. The principle of a glass tube rotor flowmeter is that it 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 of the fluid. When the fluid flows through the conical tube from bottom to top, the lift S generated by the kinetic energy of the fluid on the float and the buoyancy A of the fluid cause the float to rise. When the sum of the lift S and buoyancy A is equal to the weight G of the float itself, the float is in equilibrium and stable at a certain height position. The scale on the conical tube indicates the flow rate value of the fluid. Based on the above principles, we can know that the correct installation method for a glass tube rotor flowmeter is: fluid enters from the lower end of the flowmeter and flows out from the upper end of the flowmeter, and it needs to be installed vertically. Secondly, when the fluid passes through the glass tube rotor flowmeter, the stability of the fluid is also crucial for accurately reading the scale flow rate of the glass tube rotor flowmeter. If the float in the middle of the glass tube rotor flowmeter moves up and down, the flow rate cannot be accurately read, which will have a negative impact on our production. So, under normal circumstances, if a certain distance is maintained between the straight pipe sections, the stability of the fluid can basically meet the requirements of the flowmeter. The optimal distance for maintaining the straight pipe sections is: the top ten and the bottom five. That is to say, the straight pipe section at the inlet of the glass tube rotor flowmeter must ensure a distance of ten times the diameter at the front end of the bend, tee, cross pipe, and variable diameter; The straight pipe section at the outlet of the glass tube rotor flowmeter must ensure a distance of five times the diameter at the back end of the elbow, tee, cross pipe, and variable diameter. If the fluid is in a chaotic situation, you can contact our company (Jiangsu Dongxiang Instrument Co., Ltd.) for special treatment, and then it can be used normally. The above are important precautions for installation, and other aspects of precautions are included in the user manual of the glass tube rotor flowmeter. You can operate according to the requirements in the user manual. If used well, it can extend the service life of the flowmeter. Below, let me talk about the knowledge of use:

1. When using the flowmeter, first slowly open the upstream valve until it is fully open, and then adjust the flow rate with the downstream regulating valve of the flowmeter. When the flow meter is stopped, the upstream valve of the flow meter should be slowly closed first, and then the flow regulating valve downstream of the flow meter should be closed.

2、 The flowmeter must wait for the float to stabilize before reading the reading. Float reading position: The reading position is at the maximum diameter of the float.

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