必须垂直安装，应无明显倾斜，安装高度，应该便于对浮子的读数，读数时，视线与浮子应水平。 The plastic tube float flowmeter must be installed vertically, without obvious tilt, and the installation height should be convenient for reading the float. When reading, the line of sight and the float should be horizontal. [General standard: The optimal flow rate required is 50% -70% of the maximum flow rate of the flow meter. Try not to use the highest number. ] 2. Before using the plastic tube float flowmeter, take out the foam support inside the flowmeter with tool nose pliers and then reinstall it. When installing, pay attention to whether the rubber gasket is installed. In the takeover slot to prevent water leakage. 3. At the upstream and downstream inlets and outlets of the plastic tube float flowmeter, a straight pipe section with a diameter of 5 times that of the plastic tube float flowmeter should be guaranteed. 4. The pressure of the side fluid must be stable. If the fluid is too unstable, it will cause the float to fluctuate and cannot be measured correctly. A buffer or a setter should be set upstream of the flow meter. 5. The plastic tube float flowmeter should be installed vertically. The angle between the centerline of the flowmeter and the plumb line should not exceed 5 degrees. 6. The interface of the flowmeter can be matched with ABS plastic pipe, or PVC plastic pipe, bonded with special glue, or connected by plastic method, and then connected to the metal flange.
的主要测量元件为一根小端向下，大端向上垂直安装的锥形塑料管及其在内可以上下移动的浮子。 The main measuring element of the plastic tube float flow meter is a conical plastic tube with a small end facing downward and a large end facing upward, and a float that can move up and down inside. When the fluid flows through the conical plastic tube from bottom to top, a pressure difference is generated between the upper and lower parts of the float, and the float rises under the action of this differential pressure. When the force that causes the float to rise is equal to the combined forces of gravity, buoyancy, and viscous force, the float is in an equilibrium position. Therefore, there is a certain proportional relationship between the flow rate of the fluid flowing through the flowmeter and the rising height of the float, that is, the flow area of the flowmeter. The position height of the float can be used as a flow measurement.
的保养：1.必须保证仪表的清洁，特别是仪表中孔板、椎管的表面和浮子必须保持清洁，因而仪表使用一段时间后应取下清洗。 Maintenance of plastic tube float flowmeter : 1. The instrument must be clean, especially the orifice plate, the surface of the spinal canal and the float of the instrument must be kept clean, so the instrument should be removed for cleaning after a period of use. 2. The two covers of the indicator must be sealed to prevent dust from entering and affecting normal work. 3. If the operation of the meter is unstable, the main reason for the pointer to jump is to consider the possibility that the medium has two-phase flow (that is, the liquid phase and gas phase coexist) in addition to the pulse of the flow itself. This will ensure the stable operation of the instrument.