First, the advantages of electromagnetic flowmeter.
1.High measurement accuracy.
The measurement accuracy of electromagnetic flowmeters is very high, especially in standard conditions, where the measurement accuracy can reach 02% FS, or even higher. This is mainly because the electromagnetic flowmeter uses the principle of electromagnetic induction, which measures the fluid flow rate and then converts it into an electrical signal for output, so its measurement accuracy is relatively high.
2.Wide measuring range.
Electromagnetic flowmeters have a very wide measurement range, and typically, they can measure fluid flow velocities in the range of 05~10m/s。At the same time, under the premise of ensuring the measurement accuracy, the measurement range of the electromagnetic flowmeter can also be expanded according to the actual needs.
3.Adaptable.
The electromagnetic flowmeter has strong adaptability, it can measure fluids under different working conditions. For example, in harsh environments such as high temperature, high pressure, low temperature, and strong corrosion, the electromagnetic flowmeter can still measure normally. In addition, the electromagnetic flowmeter also has the characteristics of explosion-proof, safe, environmental protection, etc., and is suitable for various hazardous places.
4.Reliable and stable.
The reliability of electromagnetic flowmeters is very high, and the average time between failures can reach more than 3 years. At the same time, due to its simple structure and easy maintenance, it also has high stability. In addition, the electromagnetic flowmeter can also realize automatic diagnosis and alarm functions, which improves the reliability of the equipment.
Second, the shortcomings of electromagnetic flowmeter.
1.High requirements for fluid media.
The electromagnetic flowmeter has certain requirements for the conductivity of the fluid medium, and under normal circumstances, the conductivity of the measured fluid medium is not less than 5 s cm. If the conductivity of the fluid medium to be measured is too low, the measurement accuracy will be reduced or it will not work properly. Therefore, when choosing to use an electromagnetic flowmeter, it is necessary to strictly screen and control the conductivity of the fluid medium to be measured.
2.The installation environment is demanding.
The installation environment of the electromagnetic flowmeter has a significant impact on its normal operation. When installing, it is necessary to ensure the verticality and horizontality requirements of the sensor part, otherwise it will affect the measurement accuracy. At the same time, electromagnetic flowmeters are also sensitive to impurities and vibrations in pipelines, so corresponding measures need to be taken to protect and avoid interference.
3.It is difficult to debug and maintain.
The commissioning and maintenance of electromagnetic flowmeters are relatively complex and require professional and technical personnel to operate. At the same time, due to the precision of its internal parts, it requires frequent maintenance and maintenance. If there is a failure or abnormal situation in the process of use, it needs to be dealt with and repaired in time to ensure its normal operation.