Split Type Electromagnetic Flow Meter

Core Components and Working Principle

• Sensor: Installed on the pipeline and in direct contact with the measured liquid. It consists of a coil that generates a magnetic field and electrodes that detect the induced electromotive force. When conductive liquid flows through the sensor, an induced electromotive force is generated according to Faraday’s law of electromagnetic induction.
• Converter: Typically installed away from the sensor, such as in a control room, distribution cabinet, or other location convenient for observation and operation. It receives the weak induced electromotive force signal generated by the sensor, performs amplification, filtering, analog-to-digital conversion, and other processing steps, ultimately calculating the instantaneous flow rate and cumulative flow rate of the liquid, and outputs the results in digital, analog signal, or communication protocol format.
• Connection Cable: Connects the sensor and converter, transmitting the signal generated by the sensor.

Key Features

• Suitable for harsh environments: This is the greatest advantage of the split-type design. Since the converter can be installed away from the sensor, even if the sensor is located in an environment with high temperatures, high humidity, strong vibrations, corrosive gases, or explosive hazards, the converter can operate stably in a safe and comfortable environment, significantly extending the instrument’s service life.
• Remote monitoring and operation: The converter can be installed in a location away from the site, allowing staff to remotely read data and perform operations, improving work efficiency and safety.
• Easy maintenance: When maintenance or troubleshooting is required for the converter, there is no need to enter the complex on-site environment; operations can be performed directly in the control room, reducing maintenance difficulty and risk.
• Flexible installation: The sensor component can be installed on pipes with limited space, while the converter component can be placed in a more spacious and safer location.
• Interference Resistance: Although there are connection cables, the split-type electromagnetic flowmeter maintains excellent interference resistance through proper shielding and grounding.

Applications

Split-type electromagnetic flowmeters are widely used in various industrial sites with stringent environmental requirements, including but not limited to:

• High-temperature environments: Measurement of high-temperature fluids in industries such as steel, metallurgy, and power generation.
• Humid or water-immersed environments: Underground pump stations in wastewater treatment plants and monitoring points in water conservancy projects.
• Corrosive environments: Industries such as chemicals and pharmaceuticals, where sensors may come into contact with strong acids or alkalis, while the converter is kept away from corrosion.
• Explosion-proof areas: Locations such as oil, natural gas, and coal mines where flammable or explosive gases or dust are present.
• Locations with severe vibration: Near certain pump stations or machinery.
• Areas where on-site operation is inconvenient: Processes requiring centralized control and monitoring.