Floater flowmeter is low in price and easy to install, especially in the measurement of small diameter and low speed media. The following technical compendium of the Shunda flowmeter manufacturers summarizes the advantages and disadvantages of the flowmeter and hopes to give you help in use.

advantage:

Float meter is used for small diameter and low flow rate. The diameter of the commonly used instruments is 40-50mm and the minimum diameter is 1.5-4mm. Suitable for measuring low flow rate and small flow rate. Taking liquid as an example, the nominal diameter of full-flow rate of glass tube float flowmeter below 10mm diameter is only 0.2-0.6m/s, even lower than 0.1m/s; metal Tube float flowmeters and glass tube float meters with a caliber greater than 15mm are slightly higher, with flow rates between 0.5-1.5m/s. The floater flowmeter can be used for lower Reynolds number, and the float with viscosity-insensitive shape is selected. When the Reynolds number at the flow ring gap is greater than 40 or 500, the Reynolds number variation flow coefficient is kept constant, ie, the fluid viscosity change does not affect the flow coefficient. This value is much lower than the minimum Reynolds number of 104-105 for throttling differential pressure meters such as standard orifice plates.

Most of the float flowmeters do not have upstream straight pipe requirements, or do not require high upstream straight pipe sections. The float flowmeter has a wide range of flow rates, typically 10:1, a minimum of 5:1, and a maximum of 25:1. The output of the flow detection element is close to linear. Lower pressure loss. Glass tube float flowmeter is simple in structure and low in price. As long as the traffic flow is indicated on the site, the disadvantage is the risk of fragile glass tubes, especially non-guided structure floats for gas. Metal tube float flowmeters have no risk of cone rupture. Compared with the glass tube float flow meter, the use of a wide temperature and pressure range. Most of the structured float flowmeters can only be used for plumbing installations that run vertically from bottom to top.

Disadvantages:

Float flowmeter application is limited to small and medium diameters, general full-flow float flowmeter can not be used for large diameter, glass tube float flowmeter maximum diameter 100mm, metal tube float flowmeter is 150mm, larger diameter can only be used for split type meter.

When using fluids and factory-calibrated fluids are different, flow indication corrections should be made. Liquid float meters are usually calibrated with water, and the gas is calibrated with air. If the actual fluid density and viscosity are different, the flow rate must deviate from the original index value, and it must be used for conversion correction. The use of the flowmeter is relatively complicated.

The above is a summary of the advantages and disadvantages of the float flow meter. If you have any other questions or requirements regarding the flow meter, you can contact the Shunda flow meter manufacturer. We will serve you wholeheartedly.

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