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8712EM Electromagnetic Flow Transmitter - Processelite
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8712EM Electromagnetic Flow Transmitter - Processelite
Product name:
Electromagnetic Flow Transmitter
Product series:

8712EM

Product brand:
Emerson/Emerson
Product feature:
• Intuitive local operator interface with dedicated keys for ease of use • Smart meter self-verification monitors the meter's operational status and performance without interrupting production, maximizing uptime • High process noise diagnostics with optional coil drive frequency selection for optimized control in noisy applications • Adjustable empty pipe detection minimizes problems and false readings when the pipe is empty • Grounding and wiring error detection diagnostics quickly verify installation integrity • Universal transmitter function reduces inventory and provides a consistent interface for any electromagnetic flowmeter sensor
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Measuring principle:
The 8712EM electromagnetic flow transmitter is based on Faraday's law of electromagnetic induction. When a conductive fluid flows through the associated sensor, the transmitter-driven coil generates a magnetic field. The fluid cuts the magnetic field lines, inducing an electromotive force between the two electrodes, proportional to the flow velocity. The transmitter processes this weak induced voltage, converts it into a flow signal, and outputs it to the control system.
Product positioning:
Standard applications
Using scenario:
The 8712EM electromagnetic flow transmitter is widely used in various industrial fields, especially water and wastewater treatment, mining and metallurgy, pulp and paper. Combined with slurry sensors, it can measure high-concentration slurries in mining and mineral processing. Combined with hygienic sensors (such as 8721), it is also suitable for hygienic-grade applications such as food, beverage, and life sciences. With its universal transmitter functions and multiple communication protocols such as HART 7 and Modbus RS-485, it can work with various existing electromagnetic flowmeter sensors.
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