⮱Electromagnetic flowmeter is a very widely used flowmeter. It can be divided into several different types according to its use. Next, let's talk about the common types.
⮱1. By use
⮱In metallurgical, petrochemical, paper-making, printing and dyeing, textile, water supply, sewage treatment and other industries, split flange connection is commonly used; hygienic flange connection is used in cheese, food, medicine, biochemistry and other industrial fields; diving type is used to measure the natural flow of open or non-full underground canals, such as industrial drainage and sewage.
⮱2. According to the connection mode between flow sensor and pipeline
⮱Flange connection - Flange connection is a traditional connection mode. There are connecting flanges at both ends of the sensor, which are fixed with bolts between the flanges of the pipeline and can be installed unidirectionally. The large-caliber sensors of electromagnetic flowmeter all adopt this connection mode; flange clamping connection: the connection mode developed in recent years when flange clamping connection, the sensor of electromagnetic flowmeter itself can not be blue, and is clamped between the two flanges of the pipeline to connect the pipeline system with longer bolts.
⮱3. According to the assembly mode of sensors and converters
⮱Split electromagnetic flowmeter: Split electromagnetic flowmeter is the most commonly used form of electromagnetic flowmeter. Sensors are connected to pipelines. Converters are installed in the instrument room or near sensors which are easily accessible to people. They are tens to hundreds of meters apart. In order to prevent the intrusion of external noise, signal cables are usually shielded by two layers. Separate converters can be far away from the harsh environment on site, so it is convenient to check, adjust and set parameters of electronic components. Integral electromagnetic flowmeter: Sensors and converters are assembled to directly output DC current (or frequency) standard signal, which shortens the connection length between signal line and excitation line, and makes them external and concealed inside the instrument, thereby reducing signal attenuation and space electromagnetic wave noise intrusion.