The reason for the decrease of precision in the use of turbine flowmeters

Turbine flowmeters are widely used, cost-effective, and easy to use. As long as they are factory-calibrated, they ensure that the conditions of the on-site operating conditions are met, and the results are quite good. The following is a summary of the turbine flowmeter's calibration and the analysis of the reasons for the decrease in precision during the use of the flowmeter's technology Xiaobian, for your reference.

Turbine flowmeters are sensitive to the conditions of use in the field and users should try to meet its requirements in order to maintain factory accuracy. When the temperature and pressure of the fluid medium differ greatly from the reference conditions, the volume change of the sensor housing can be calculated based on the material of the sensor and the temperature pressure, and the meter reading can be corrected. When the viscosity of the fluid medium under working conditions is different from the viscosity of the calibration fluid, it should be corrected according to the viscosity correction curve provided by our company. Turbine flowmeters have certain requirements on the length of straight sections upstream and downstream of them, and they should be managed, especially when the user requires high accuracy. The meter shows the volumetric flow under the working conditions of the media. To know the standard volume flow or mass flow, density compensation is also required.

The summaries of the technologies of Heshunda Flowmeter summarizes that the accuracy of the turbine flowmeters during use may be reduced due to the following reasons:

1, the media generally have some impurities, the bearing, the shaft should wear, so that the gap between the two increases, the dynamic balance of the moving parts is destroyed, the speed is reduced, or dirt into the gap, so that the resistance to increase the movement , Speed ​​drops. All of these reasons cause the display value of the instrument to decrease, causing a negative error, which is detrimental to the fluid supplier.

2. The change of fluid temperature and pressure may cause the air contained in the pipeline to escape the air contained in the pipeline or because the pressure in the pipeline is lower than the saturation vapor pressure of the fluid, making part of the liquid into steam, or may be caused by the negative pressure of the medium. The gas is sucked into the pipeline. These gases flow along with the measured fluid, causing the indicator value of the instrument to increase, causing a positive error, which is detrimental to the demand of the fluid.

3. The fibrous or viscous impurities in the fluid are attached to the rotating part of the flowmeter, which increases the rotational resistance, causing the indicator value of the instrument to decrease, causing negative errors, and adversely affecting the fluid supplier.

4, the working environment is rather harsh, for example, electromagnetic field interference, dust, high temperature, vibration, humidity, etc., may cause malfunction or failure of the turbine flow sensor, directly caused by the turbine flowmeter error, the error is positive or negative The value may not be obvious or it may completely fail. For the above phenomenon, when it is more serious, problems can be found in the comparison of the working status of the process, and it is easy to take corresponding measures. However, in the early stages of the problem, problems could not be discovered without special measures.

As a professional R&D flowmeter manufacturer, Heshun Flowmeter manufacturers have been persisting in the production concept of “quality and brand” and “brand development” over the past few years. Perseverance has been unremitting and difficult to tackle. New technologies and products have been constantly researched and developed. Our customers provide products with reliable quality and conform to the demand. At the same time, we have established a long-term cooperation relationship with many production companies. All colleagues of Heshunda look forward to working with you to set sail.

Insulation Ball Valve

Insulation ball valve is a kind of valve, which is generally installed horizontally. It is of the same type as the flange Gate Valve. The closing part is a sphere, and the sphere rotates around the center line of the valve body to open and close. Ball valves are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.

Insulation Ball Valve,Flanged Valves,Flanged Ball Valve,Ss Ball Valve

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