Electromagnetic flowmeter metering lower limit measurement value

1. Measuring Principle of Electromagnetic Flowmeter

Electromagnetic flowmeter utilizes the physical effect of the forced movement of conductive liquid in a magnetic field to measure the flow rate of liquid by inducing electromotive force. Electromagnetic flowmeters generally consist of electromagnetic systems, detection circuits, calculations and displays.

Fameter electromagnetic flowmeter

2. Lower limit measurement value of electromagnetic flowmeter

In the actual application process, electromagnetic flowmeter has a certain lower limit measurement value. Its lower limit measurement value depends on the accuracy level of the electromagnetic flowmeter and the use environment. Generally speaking, the lower limit flow rate of electromagnetic flowmeter is 0.3m/s, and when the remote transmission requirements are higher, the lower limit flow rate can reach 0.1m/s.

3. Reasons for the lower limit measurement value of the electromagnetic flowmeter

1. Properties of the fluid: When the fluid viscosity is large, the density is small, and the correction coefficient is small, electromagnetic flow will occur. The flow meter lower limit measurement value increases.

2. Selection of measuring pipe diameter: Generally, choosing a smaller measuring pipe diameter will lead to an increase in the lower limit measurement value. Therefore, in practical applications, the appropriate measuring pipe diameter should be selected according to needs.

3. Flow channel structure and flow velocity distribution: Uneven flow channel structure and flow velocity distribution will also lead to an increase in the lower limit measurement value of the electromagnetic flowmeter.

IV. Summary

Electromagnetic flowmeter is one of the most widely used flowmeters at present, and its measurement accuracy and stability are relatively high. However, in practical applications, it is necessary to pay attention to the problem of the lower limit measurement value of the electromagnetic flowmeter, and make reasonable selection and configuration according to the measurement environment and measurement needs to obtain more accurate flow measurement results.