Wastewater electromagnetic flowmeter selection guide

Sewage electromagnetic flowmeter is an instrument used to measure the flow of sewage, wastewater or corrosive liquids. It uses the principle of electromagnetic induction to measure the volume of liquid flowing through it. Includes an electrode and a sensor. The electrode usually consists of a pair of electrodes, one of which is used as the working electrode and the other as the reference electrode. The two electrodes are installed in the measuring pipe so that they are in contact with the liquid.

When the liquid passes through the measuring pipe, a magnetic field is generated perpendicular to the direction of flow. This magnetic field can be measured by applying an alternating electric field to the electrodes. When an alternating current is applied to the electrodes, the particles in the liquid begin to move in the electric field. This movement generates an alternating voltage signal, which creates an alternating voltage on the electrodes.

The sensor measures liquid flow by detecting alternating voltages on electrodes. When the liquid flows through the electrode, the particles in the liquid generate an alternating voltage signal due to the movement of the liquid. The sensor receives and processes this signal, and then converts the measurement result into a standard signal output.

The following is the purchase guide for Famet sewage electromagnetic flowmeter:

1. Measuring range: First determine the flow range to be measured, and select the appropriate model according to the actual situation and specifications. Generally, the measurement range is 0.5m/s to 10m/s.

2. Pressure level: Understand and determine the pipeline pressure level of the required measurement scenario to ensure that the selected product can work properly and operate stably for a long time.

3. Material selection: Since corrosive substances may exist in sewage flow, it is very important to choose materials with corrosion resistance. Common materials include 304 stainless steel and 316L stainless steel. Appropriate materials can be selected according to the nature of sewage.

4. Adapt to the environment: usually installed in harsh environments, such as moisture, dust, high temperature, etc. Therefore, you need to consider the sealing performance and protection level of the product when purchasing to ensure long-term stable operation.

5. Accuracy: Determine the required accuracy level according to the measurement requirements. Usually, the accuracy can be divided into level 1.0, level 0.5, level 0.2, etc., which need to be selected according to the actual situation.

6. Communication interface: Consider whether you need to add a communication interface to achieve data interaction with other devices. Common communication interfaces include analog signal output, RS485, HART, etc.

7. Price factor: In addition to the above factors, the price factor of the product must also be considered. Choose the right product based on your budget and actual needs.