How to Choose Electromagnetic Flow Meter?

Electromagnetic flow meters are very common flow-measuring instruments in industrial sites. Since the development of Chinese electromagnetic flow meters in the 1980s, Chinese electromagnetic flow meters have been recognized by the majority of users for their stable characteristics and affordable prices.

After more than 30 years of development, electromagnetic flow meters have become the mainstream conductive liquid metering equipment in the market. Electromagnetic flow meters are widely used, and the most critical reason is that they can adapt to various complex working conditions and harsh field environments.

But many people wonder why other people's electromagnetic flow meters work well, but why are they always broken in their own factories? In fact, there is another very important reason is whether there is a suitable electromagnetic flow meter.

Here are some considerations for choosing the right electromagnetic flow meter

The selection of an electromagnetic flow meter mainly pays attention to the following parameters: temperature, pressure, flow range, medium (whether it is corrosive), power supply mode, output signal, etc. These are the parameters that must be confirmed in the selection. After confirming the parameters, refer to the following situations.

Applications:

• Measuring sewage (used in the environmental protection industry, water treatment, printing and dyeing, and other industries).
• Used for metering and flow accumulation.
• Measure chemical substances such as strong acids and alkali.
• On-site display, data remote transmission, monitoring.
• Quantitative control, used in the reaction kettle.

Pipeline temperature: medium temperature: the normal temperature within 100 degrees: optional PTFE lining.
High temperature can be customized: For details, please contact us today.

Pipeline pressure:

The conventional pipe diameter is between DN10-DN150, and the pressure resistance can reach 4MPA (high pressure can be customized).
The pressure resistance of conventional pipe diameters between DN200-DN2000 can reach 1.6MPA.

Lining options:

Scope of application of PTFE lining: domestic sewage, industrial sewage, strong acid, and alkali, etc. (PTFE is currently the most common lining in the market)
Scope of application of rubber lining: tap water, weak acid, and alkali, mud water, mineral pulp, etc.

Electrode selection:

• 316L electrode: weak acid and weak base, domestic sewage, water, salt.
• HC electrode: oxidizing salts such as Fe, CU, etc., organic acids, phosphoric acid, and other media selection.
• Titanium electrode: suitable for salt, weak acid, and other media, not suitable for acid media.
• Tantalum electrode: suitable for salt and weak alkaline medium, not suitable for acid medium.
• Universal electrode: almost all acid and alkali salts can be used, (except aqua regia and ammonium salts).

Installation method:

• Flange installation.
• Threaded installation.
• Clamp installation.
• For customization.

Power supply mode:

• 24V power supply.
• 220V power supply.
• Lithium battery power supply.

The above are the main parameters that need to be confirmed in the selection of an electromagnetic flow meter. In our industrial site, we must ensure that the water flow of the electromagnetic flow meter is full. Otherwise, even if the electromagnetic flow meter is selected correctly, it is still inaccurate.

Another thing to pay attention to is the installation of the electromagnetic flow meter. Although this has nothing to do with how the electromagnetic flow meter is selected, it is also a problem that we often encounter in our field conditions.

The installation of the magnetic flow meter must follow the installation principles of the first ten and the last five (that is, the straight pipe section of the electromagnetic flow meter should be at least 10 times the diameter of the pipe before installation, and the straight pipe section after the installation should be at least 5 times the pipe diameter).

Through the above introduction, you should have a certain understanding of how to select the electromagnetic flow meter. If you have any other questions about electromagnetic flow meters, you can also contact us.