What parameters of a direct-reading scale plastic flowmeter affect its measurement accuracy? Posted by : admin / Posted on : Jan 26， 2024

The measurement accuracy of direct-reading scale plastic flow meters is affected by a variety of parameters, including fluid properties, temperature, pressure, flow rate range, viscosity, diameter, etc. The following are some parameters that mainly affect its measurement accuracy:

Fluid properties:
The properties of the fluid are one of the key factors in the measurement accuracy of direct-reading plastic flow meters. The density, viscosity, conductivity and other properties of different types of fluids, such as liquids or gases, may affect the measurement results of the flow meter.

temperature:
Temperature changes have a direct impact on physical properties such as density and viscosity of fluids, which may in turn cause changes in flow rate. Direct-reading plastic flow meters are often equipped with temperature compensation, but it is still important to note that under extreme temperature conditions, additional calibration or adjustments may be required to ensure accurate measurement results.

pressure:
Pressure changes can cause fluctuations in fluid flow rate, affecting the measurement accuracy of the flow meter. Pressure compensation can counteract this effect to some extent, but under high or low pressure conditions, more complex calibration may be required to ensure accurate measurements.

Flow rate range:
Direct-reading plastic flowmeters usually have a designed flow rate range within which high accuracy can be maintained. Exceeding this range may result in unstable flow rate measurement, so when selecting a flowmeter, you need to ensure that it is suitable for the flow rate range of the fluid being measured.

Viscosity:
The viscosity of a fluid refers to its viscosity, which directly affects the measurement of flow rate and flow rate. Some flow meters are designed to measure fluids of different viscosities, but users still need to ensure that the chosen flow meter matches the viscosity of the fluid being measured.

Diameter size:
The effect of measuring pipe or pipe diameter size on the flow meter is important. When fluid flows in larger or smaller diameter pipes, different flow velocity distributions may occur, which affects the accuracy of the flow meter. Therefore, when installing a flow meter, it is necessary to consider the influence of pipe diameter and perform appropriate calibration according to the specific situation.

Installation location and method:
Where and how the flow meter is installed can also affect the accuracy of its measurements. For example, installation in curved or bifurcated pipes may cause uneven fluid flow, affecting measurement results. Therefore, it is necessary to follow the installation guidelines provided by the manufacturer during installation to ensure that the flow meter is in the ideal working position.

Precision:
The manufacturing accuracy and quality level of a flow meter are directly related to its measurement accuracy. High-precision manufacturing processes and precision parts can reduce errors and improve the measurement accuracy of flow meters.