Plastic tube flowmeter | Difference between throttling flowmeter and float flowmeter

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1. Methods for displaying water flow in water pipes

There are three main methods for displaying water flow in water pipes: visual observation, instrument detection, and auxiliary labeling. The specific operation depends on the pipe material, environment, and requirements.

1. Visual direct observation method: If the water pipe is a transparent PVC or glass pipe, it can directly observe the water flow pattern through the pipe wall, such as turbulence and laminar flow, which is particularly suitable for water flow monitoring in laboratories and small devices.

. 2) Add food grade pigments such as red ink, sodium fluorescein, or biological indicators to water, like harmless microorganisms, to track the water flow path through color or fluorescence changes. Pay attention to cleaning afterwards to prevent pipeline contamination.

2. Instrument Testing Method 1) Install ultrasonic flow meters, electromagnetic flow meters, and other equipment to indirectly reflect the water flow status through digital flow rate, flow curve, and other data display, suitable for industrial pipelines and home intelligent water systems.

. 2) Use a water pressure sensor to monitor changes in pipeline pressure. If there are significant pressure fluctuations, it indicates that the water flow is in a dynamic state; Stable pressure may be static or constant current. 3) Underwater leak detector and ultrasonic flowmeter can detect water flow vibration and noise frequency to determine flow velocity and direction without damaging pipelines, making them suitable for concealed pipeline inspection.

III. Auxiliary Marking and Physical Observation Method 1) Stick thermal stickers and color changing tape on the outer wall of the

pipeline. When the water flows, there will be slight temperature changes due to friction, and the color change of the stickers can be used to determine whether the water has passed through. It is necessary to ensure that the stickers are in close contact with the pipeline.

. 2) If there is an exhaust valve in the water pipe, open it and observe the speed at which the bubbles are released. If the bubbles are continuously released, it indicates that the water flow is flowing, and if the bubbles are still, it may be a stagnant water section. 3) Install a blade type water flow indicator, similar to a small turbine blade, where the water flow impacts the blade and rotates. By observing the blade status, the presence of water flow can be determined, making it suitable for metal or hard plastic pipelines.

4. Precautions: 1) Metal, cast iron and other opaque pipes cannot be directly observed, and instruments or auxiliary methods must be relied upon.

. 2) Food grade pigments cannot be used for drinking water pipelines, and environmentally friendly tracers can be used in industrial scenarios. 3) High precision detection requires calibrated professional equipment, and low-cost sensors can be used for simple home monitoring.

2. The difference between a throttling flowmeter and a float flowmeter

The difference between a throttling flowmeter and a float flowmeter is that the principle of a throttling flowmeter is to set obstacles in the pipeline passing through the fluid, and to obtain differential pressure through throttling to reflect the magnitude of the fluid flow.

. Representative throttling flow meters include orifice flow meters, V-cone flow meters, and so on. 2. Principle of Float Percussion

Plastic tube flowmeter | Difference between throttling flowmeter and float flowmeter

1. Methods for displaying water flow in water pipes

2. The difference between a throttling flowmeter and a float flowmeter

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