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How many classifications of electromagnetic flowmeters are there?
Published Time:
2023-02-17 15:36
Source:
Electromagnetic flow meters consist of two parts: a sensor and a converter. They operate based on Faraday's law of electromagnetic induction and are used to measure the volumetric flow rate of conductive liquids with a conductivity greater than 5 uS/cm. They are an inductive instrument for measuring the volumetric flow rate of conductive media. Electromagnetic flow meters are widely used in various applications, including industrial pulp and black liquor, mineral pulp in non-ferrous metallurgy, coal slurry in coal plants, highly corrosive liquids in the chemical industry, pharmaceutical industry, food industry, bioengineering, water supply, and drainage engineering, and are well-liked by many customers. The widespread application of electromagnetic flow meters is due to their wide variety. So, how many types of electromagnetic flow meters are there?
1. According to their purpose, electromagnetic flow meters can be classified into general-purpose, explosion-proof, hygienic, waterproof, and submersible types.
2. According to the connection method between the flow sensor and the pipe, electromagnetic flow meters can be classified into flanged, clamp-on, hygienic clamp, and threaded connection types.
3. According to the assembly method of the sensor and converter, electromagnetic flow meters can be classified into split and integrated types.
4. According to whether the flow sensor electrode contacts the measured liquid, electromagnetic flow meters can be classified into contact and non-contact types.
5. According to the output signal wiring, electromagnetic flow meters can be classified into four-wire and two-wire types.
6. According to the excitation current method, electromagnetic flow meters can be classified into DC excitation, AC (power frequency or other frequency) excitation, low-frequency rectangular wave excitation, and dual-frequency rectangular wave excitation.
In fact, when selecting an electromagnetic flow meter, users can match their needs based on the options for various performance parameters. Therefore, in daily life, we rarely hear the professional terms mentioned above. They are mostly referred to based on the function and application scenarios of the electromagnetic flow meter, such as on-site slurry electromagnetic flow meters and display-type electromagnetic flow meters.
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