principle and structure

The flowmeter is mainly composed 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 (Figure 3). 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.
The float reading position in the flowmeter is shown in Figure 2:

The cone tube of LZB/LZB - () F flowmeter is a smooth inner wall tube (see Figure 4). For flowmeters with a diameter of DN15 or more, the float moves up and down through the guide rod to maintain stability; There are three guiding ribs on the inner wall of the cone tube of LZJ/LZJ - () F flowmeter, which keep the float stable (see Figure 4). Flow meters with a diameter of DN10 or less are connected by hoses and equipped with needle shaped flow control valves; Flow meters with a diameter of DN15 or above shall be connected with flanges.

Materials of components in contact with measuring fluids

The base, float, and needle valve are made of polytetrafluoroethylene (PTFE). Support plates, screws, etc. are made of stainless steel