What are the requirements for measuring water quality with an electromagnetic flowmeter?

Project Overview

　　1、 Introduction to Electromagnetic Flowmeters

　　Electromagnetic flowmeter is a commonly used flow measurement instrument that measures the flow rate by measuring the motion state of a substance in a magnetic field. The characteristics of electromagnetic flow meters are high measurement accuracy, good stability, and high reliability, which are widely used in fields such as water treatment, chemical engineering, metallurgy, etc.

　　2、 Requirements of electromagnetic flowmeter for measuring water quality

　　Different water qualities have varying impacts on the measurement accuracy and stability of electromagnetic flow meters. Generally speaking, electromagnetic flow meters need to meet the following two conditions:

　　1. Liquid conductivity requirements

　　The liquid measured by the electromagnetic flowmeter must have a certain conductivity, and the higher the conductivity, the higher the measurement accuracy. For general electromagnetic flow meters, it is required that the liquid conductivity should not be lower than 5 microsiemens/centimeter, otherwise it will seriously affect the measurement accuracy.

　　2. Requirements for dielectric constant

　　In addition to conductivity, electromagnetic flow meters also have certain requirements for the dielectric constant of liquids. The dielectric constant is an important indicator of the insulation performance of liquids, referring to the relative dielectric constant of a substance in an electric field relative to vacuum.

　　For most electromagnetic flow meters, it is required that the liquid dielectric constant should be between 2-80. If the dielectric constant of the liquid deviates from this range, it will seriously affect the measurement accuracy and stability of the electromagnetic flowmeter.

　　3、 Summary

　　Electromagnetic flowmeter is an important flow measurement instrument, and its measurement accuracy and stability are closely related to water quality. Generally speaking, electromagnetic flowmeters need to meet the requirements of liquid conductivity and dielectric constant to ensure the accuracy and reliability of measurement results. Therefore, before choosing an electromagnetic flowmeter, attention should be paid to whether the conductivity and dielectric constant of the liquid meet the instrument requirements.