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Fun facts about electromagnetic flowmeters! !

2020-08-12View Original

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Electromagnetic flowmeters can measure the two-way flow of liquids, provided that the minimum conductivity of the liquid is ≥ 50 US/cm. Examples of such liquids include beverages such as fruit juices, beer, and wine; dairy products; fruit juice mixtures; salt solutions; acids, bases, and the like. In the highly competitive flow meter market, the E H sanitary electromagnetic flow meter manages to secure a niche for itself in this chaotic environment thanks to its unique advantages. 1. The E+H electromagnetic flowmeter can perform high-precision measurements under a wide range of process conditions, making it an economical solution for flow measurement. 2. It features high reliability and excellent measurement stability, as well as a unified operation mode. 3. There is no pressure loss; it has strong resistance to vibrations, and its installation and calibration are simple. 4. It can be connected to all major transmitter power supply devices as well as the input cards of process control systems. 5. Using two-wire technology, it saves installation space and reduces operating costs. 6. Operation is carried out via touch buttons, allowing control of the instrument without having to open its enclosure – making it suitable for use in hazardous environments. Introduction to the E+H electromagnetic flowmeter: This flowmeter is available in both integrated and split configurations. The output stage is electrically isolated, enabling easy integration with downstream instruments for functions such as flow recording, control, and regulation. At the same time, the flow meter is equipped with an RS485 communication interface, allowing it to be connected to a computer. Each set of products is calibrated using water flow as specified in the order, and it can usually be put into use without any adjustments. Due to its unique advantages, it is now widely used in the measurement of flow rates of various conductive liquids in industrial processes, such as corrosive media like acids, bases, and salts; it is also used for measuring the flow rate of various slurries, thus establishing a distinct field of application. The working principle and components of the E+H electromagnetic flowmeter: The working principle of the E+H electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction. Shanghai Ailin Automation Co., Ltd.: Conductive liquids flow in a magnetic field, cutting through the magnetic field lines and generating an induced electromotive force. Expression: E = KBLv, where B is the magnetic flux density; L is the distance between the measuring electrodes; v is the average velocity of the fluid under measurement in the magnetic field; K is a proportionality constant. The E+H electromagnetic flowmeter consists mainly of a flow sensor and a signal converter. The sensor converts the flow rate of the liquid being measured into a corresponding induced electromotive force. The function of a signal converter is to amplify the millivolt-level voltage signal generated by the electromagnetic flow meter, which is proportional to the flow rate, and to convert it into standard direct current, voltage, or pulse signals that can be received by industrial instruments. This allows for the indication, recording, and calculation of flow rates in conjunction with these instruments and controllers. The conduit of the E+H electromagnetic flowmeter: First of all, the electromagnetic flowmeter is designed and utilized based on Faraday’s law of electromagnetic induction. When a conductive fluid passes through a magnetic field, an electromotive force is generated. Given a constant magnetic field strength and cross-sectional area of the pipe, the potential measured across the electrodes can be used to determine the flow velocity as well as the flow rate. Therefore, if the pipe is made of a conductive material such as iron, the current in the fluid will be short-circuited, preventing measurement. The main function of the conduit is to serve as a flow channel for conductive liquids, and it is directly related to whether the flow meter can operate properly. Therefore, the entire conduit must be made of a material that is non-magnetic and has low electrical conductivity; otherwise, it will affect the measurement results of the electromagnetic flowmeter, or even prevent it from functioning properly. For catheters, in addition to these necessary conditions, it is also important to ensure that they have a certain level of mechanical strength, so as to achieve better performance in practical use. The E+H electromagnetic flowmeter is available in both integrated and split configurations; its output stage features electrical isolation, allowing it to be easily connected to subsequent instruments for functions such as flow measurement, control, and regulation. Due to its unique advantages, it is now widely used in the measurement of flow rates of various conductive liquids in industrial processes, such as corrosive media like acids, bases, and salts; it is also used for measuring the flow rate of various slurries, thus establishing a distinct field of application. Selection of the installation location for E+h electromagnetic flowmeters: The E+H electromagnetic flowmeter is a highly precise instrument, and strict requirements exist regarding the choice of installation location in order to achieve the desired level of precision. When selecting the installation location, the following requirements should be met: 1. The location where the E+H electromagnetic flowmeter is installed should avoid ferromagnetic objects and devices with strong electromagnetic fields (such as large motors and large transformers), to prevent the magnetic field from affecting the sensor’s magnetic field and flow signal. 2. The installation location of the E+H electromagnetic flowmeter should avoid exposure to direct sunlight and rain, as well as high temperatures. Temperatures above 60°C and relative humidity above 95% can have an adverse effect on the proper operation of the electromagnetic flowmeter, and may even cause damage to the equipment. 3. The installation location of the E+H electromagnetic flowmeter should be chosen in a place that is easy to maintain and access. 4. The E+H electromagnetic flowmeter should be installed at the rear end of the pump; it must not be placed on the suction side. 5. The E+H electromagnetic flowmeter should be located in a dry and well-ventilated area, and should not be placed in damp areas where water accumulation is likely to occur. Do you understand the E+h electromagnetic flowmeter now?

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