Damping of flow meter | How to adjust parameters of ultrasonic flow meter

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1. Use of Metal Tube Float Flow Meter

When using a metal tube float flow meter, the following points should be noted: Precautions for first-time use. When using a metal tube float flow meter for the first time, due to the lack of pressure in the pipeline, if the valve suddenly opens, the float in the instrument will be damaged due to the impact of rapidly rising airflow or liquid flow. Therefore, the valve must be slowly opened to ensure that the float rises smoothly to the working position. Damping device for anti float vibration measures: Instruments measuring gases need to be equipped with damping devices on the measuring components of the wheel to reduce float vibration and ensure stable readings. Installation of throttling components: If the float still vibrates, throttling components (such as orifice plates or valves) need to be installed in the pipeline to reduce the vibration amplitude by adjusting the fluid flow rate. For instruments with a diameter of less than 25mm, a filter needs to be installed upstream to prevent impurities (such as particles and dirt) from entering the flowmeter, avoiding float blockage or measurement channel blockage, affecting accuracy, and even damaging the instrument. Installation of gas flowmeter and position of regulating valve: The regulating valve of the gas flowmeter should be installed at the outlet of the instrument, and the flow rate should be regulated by controlling the outlet pressure to avoid uneven force on the float caused by direct adjustment at the inlet. Pressure stabilizing device: If the gas pressure fluctuates greatly, a pressure stabilizing device (such as a pressure stabilizing tank or pressure reducing valve) should be installed in the pipeline to ensu

re that the float works stably and reduce measurement errors. When measuring gas, the pressure requirement is to ensure that the pipeline pressure is not less than 5 times the pressure loss of the flow meter. For example, if the pressure loss of the flowmeter is 1kPa, the pipeline pressure needs to be ≥ 5kPa. This condition ensures that the float operates stably under fluid propulsion, avoiding float fluctuations or measurement failures caused by insufficient pressure. Daily maintenance and regular cleaning: Check if the filter is clogged, clean impurities in a timely manner, and prevent the float from getting stuck. Damping device inspection: Confirm that the damping device or throttling component is in normal condition to avoid float vibration caused by looseness or damage. Pressure monitoring: For gas measurement scenarios, regularly verify whether the pipeline pressure meets the minimum requirements, and adjust the parameters of the stabilizing device if necessary. Fault handling principle: Float blockage: Close the valve, drain the medium, disassemble the instrument for cleaning, and check whether the float is deformed or worn. Reading fluctuation: Check if the damping device or throttling element is malfunctioning, or if the pipeline pressure is stable. No flow display: Confirm whether the valve is fully open, whether the pipeline is unobstructed, or whether the float has fallen off. Summary: The use of metal tube residual float flowmeter should strictly follow the operating specifications, focus on controlling the valve opening speed, installing protective devices (such as filters and dampers), reasonably configuring pressure regulating equipment, and regularly maintaining and inspecting. These measures can effect

Damping of flow meter | How to adjust parameters of ultrasonic flow meter

1. Use of Metal Tube Float Flow Meter

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