How does the electromagnetic flowmeter work:

Electromagnetic flowmeters use Faraday's law of electromagnetic induction to determine the flow of liquid in the pipe. In an electromagnetic flowmeter, a magnetic field is generated and directed to the flow of liquid through the pipe. According to Faraday's law, the flow of a conductive liquid through a magnetic field will result in a voltage signal being detected at the electrode, located on the wall of the flow tube. As the fluid moves faster, more voltage is generated. Faraday's Law states that the voltage generated is proportional to the motion of the flowing liquid by the electron emitter of the voltage signal to determine the liquid flow for processing.

In contrast to many other flowmeter technologies, electromagnetic flowmeter technology produces a linear relationship between the signal and the flow rate. Therefore, the range with electromagnetic flowmeters is better than close to 20:1 or without sacrificing accuracy.

How to use electromagnetic flowmeter

Electromagnetic flowmeters measure the velocity of conductive liquids in pipes, such as water, acid, caustic soda, and mud. Electromagnetic flowmeters can measure the correct electrical conductivity of the liquid that is greater than about 5 S/cm. Be careful because using an electromagnetic flowmeter for low conductivity fluids, such as deionized water, boiler recharge water, or hydrocarbons, can be turned off causing the flowmeter to measure zero flow.

The flowmeter does not impede flow, so it can be used for clean, sanitary, dirty, corrosive and abrasive liquids. Electromagnetic flowmeters can be applied to the flow of conductive liquids, therefore, mining with this technology, due to their non-conductive and gaseous hydrocarbon and gas cannot be measured.

Electromagnetic flowmeters do not require much upstream and downstream direct operation, so they can be installed during relatively short meter runs. Electromagnetic flowmeters usually require 3-5 diameters of upstream straight pipe segments and 0-3 diameters of downstream straight running to measure the plane of the electromagnetic flowmeter electrodes.

Dirty liquid applications are found in water, wastewater, mining, beneficiation, power, pulp and paper, chemical and other industries. Water and wastewater applications include the transfer of liquid power pipes between water/wastewater treatment areas. Electromagnetic flowmeters are used in sewage treatment plants, and raw sewage, process water, water and chemicals are measured. Applications in the mining and mineral treatment industries include process water and process pulp flows and heavy media flows.

With proper attention to structural materials, the flow of highly corrosive liquids (such as acids and bases) and serous liquids can be measured. Corrosive liquid applications are typically found in chemical industry processes, and in most industries use chemical feeding systems. Mud applications are commonly found in the mining, mineral processing, pulp and paper, water and waste industries.

Electromagnetic flowmeters are commonly used to feed liquids using gravity. Make sure the orientation of the flowmeter is such that it is fully filled with the liquid flowmeter. If the liquid flow meter is to ensure full filling, the flow rate can be significantly affected.

Be especially careful when operating the vacuum service, as some electromagnetic flowmeter linings can fold and be sucked into the vacuum service pipe -- catastrophic damage to the flowmeter electromagnetic flowmeter. It is important to note that vacuum conditions can occur in pipes that do not appear to be exposed to vacuum services, such as pipes, where condensed gas (usually in abnormal conditions) is present. Similarly, electromagnetic flowmeter temperatures that are too high (even for a time under abnormal conditions) can cause permanent flowmeter damage.