What is the function of the float design of the double-scale plastic flow meter? Posted by : admin / Posted on : Jan 19， 2024

The float design of the double-scale plastic flow meter is a crucial component of the instrument. Its role involves the accurate indication of fluid flow rate and the stability of the overall performance of the instrument. The following is a detailed explanation of the double-scale plastic flowmeter float design:

1. Measurement principle
The dual-scale plastic flow meter uses a measurement principle based on float and buoyancy. The float in the measuring pipe is affected by the buoyancy force generated by the fluid flowing through it, thereby measuring the flow rate. Therefore, the design of the float directly affects the accuracy of the measurement and the performance of the instrument.

2. Float shape and material
The shape and material selection of the float are at the core of the float design. Typically, floats are designed to be cylindrical or tapered to allow for better movement in the fluid. The material is usually lightweight and well-buoyant, such as polytetrafluoroethylene (PTFE) or polycarbonate (PC). This ensures that the float responds sensitively to the buoyancy of the fluid and accurately reflects the fluid flow rate.

3. Float mass and density
The mass and density of the float must be carefully controlled to ensure measurement accuracy at different flow rates. If the mass of the float is too large or the density is too high, it may cause insufficient buoyancy and affect the sensitivity of the indication. Therefore, precise float design requires balancing buoyancy and mass to accommodate various flow rate conditions.

4. Interaction between float and fluid
The interaction between the float and the fluid is key to ensuring accurate measurements. The float must be able to adapt to the dynamics of the fluid as the flow rate changes. The design goal is to ensure that the float can float stably at different flow rates and respond quickly to changes in the fluid to provide real-time flow rate indication.

5. Multi-scale design
The reason why the double-scale plastic flow meter is called double-scale is because there are usually two scales on the instrument, which represent the standard flow rate and the actual flow rate respectively. The float design must be able to move freely within these two scale ranges to provide a comprehensive flow rate measurement.

6. Anti-interference
The float design should also consider anti-interference to reduce the impact of external factors on the float movement. This includes preventing chatter, vibration or external pressure changes from interfering with the measurement.

7. Long-term stability
The design of the float needs to ensure stability over extended periods of use. This includes requirements for the corrosion resistance and wear resistance of the float material, as well as its adaptability to impurities in the fluid.

The float design of a dual-scale plastic flow meter plays a vital role in measurement accuracy and instrument performance. Through reasonable shape, material selection, quality and density control, the float can respond sensitively to changes in fluid flow rate, providing users with reliable and accurate flow rate indications.