Introduction to the installation environment of electromagnetic flow meter

Abstract: The information on the installation environment of electromagnetic flowmeters is provided by the excellent flowmeter and flowmeter manufacturers. First, the selection of sensor installation environment The electromagnetic flow sensor shell protection level is generally IP65 (international GB4208 shell protection level dustproof and anti-water level). The main requirements of the installation environment are: (1). For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is an introduction to the installation environment of electromagnetic flowmeters. 1. Selection of sensor installation environment——Dustproof and anti-touching water grade), please refer to Chapter 5, Section 5 for the selection of the installation site. The main requirements of the installation environment are: (1) The sensor should be installed in a dry and ventilated place, avoid places that are humid and prone to flooding, and should try to avoid direct sunlight and direct rain. (2) It should be avoided as much as possible to install in a place where the ambient temperature is too high. The electromagnetic flowmeter of the integrated structure is also subject to the ambient temperature of the electronic components, which is lower. (3) There should be no strong leakage current on the pipeline where the sensor is installed, and should be as far away as possible from equipment with strong electromagnetic fields, such as large electromechanical, large transformers, etc., to avoid electromagnetic field interference; (4) The pipeline or ground where the sensor is installed should not be installed. There should be strong vibration, especially the integrated instrument; (5) The place where the sensor is installed should consider the space for on-site maintenance by the staff. 2. Selection of converter installation environment The converter is used as a field installation instrument for on-site indication, and its installation site should generally be selected: the ambient temperature is between -10 ~ 45 ℃; the relative humidity of the air≤85%; there is no strong vibration at the installation site; the surrounding air does not contain corrosive gas; the converter should be installed indoors as much as possible. When installed outdoors, measures to prevent sun and rain should also be taken. 3. Correct selection: The selection of the instrument is a very important work in the application of the instrument. According to the relevant data, 2/3 of the failures of the instrument in the actual application are caused by the wrong selection and installation of the instrument. pay attention. 4. Collecting data ①Name of the measured fluid; ②Maximum flow and minimum flow; ③Maximum working pressure; ④Maximum temperature and minimum temperature.·The fluid to be tested must have a certain conductivity, conductivity≥5uS/cm.·The maximum flow and minimum flow must conform to the numbers in the table below. (Extended process range 0.1 ~ 15m/s) 5. Features of electromagnetic flowmeter: 1. The measurement is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity; 2. There are no parts that hinder the flow in the measuring tube, and no pressure loss , The requirements for straight pipe sections are lower; 3. The nominal diameter of the series is DN15 ~ DN3000. There are various options for sensor lining and electrode materials; 4. The converter adopts a novel excitation method, with low power consumption, stable zero point and high accuracy. The flow range can reach 1500:1; 5. The converter can be integrated with the sensor or separate; 6. The converter adopts a 16-bit high-performance microprocessor, 2x16LCD display, convenient parameter setting and reliable programming; 7. Flow rate It is a two-way measurement system with three built-in totalizers: forward total, reverse total and difference total; it can be displayed. Zhuang, reverse flow, and has a variety of outputs: current, pulse, digital communication, HART; 8. The converter adopts surface mount technology (SMT), with self-checking and self-diagnosis functions; 6. The protection level is in accordance with the national standard GB4208-84 And the International Electrotechnical Commission standard IEC529-76 on the enclosure protection level is:·IP65: Waterproof type, allowing the faucet to spray water on the sensor from any direction, the water spray pressure is 30kPa, the water output is 2.5L/s, and the distance is 3m.·IP68: diving type, long-term work in the water. The protection level should be selected according to the actual situation. If the sensor is installed below the ground and is often flooded, IP68 should be selected. If the sensor is installed above the ground, IP65 should be selected. Seven, additional functions The basic type of LDE electromagnetic flowmeter has functions such as display, output 4~20mA and 0~1kHz alarm, and other additional functions can be added according to the actual situation.·Split installation: The sensor needs to be installed below the ground or for other reasons, and the split installation method should be selected.·RS-485 communication requires sensors and other devices to communicate, and RS-485 communication function is required. Compared with other similar products abroad: LDE type intelligent electromagnetic flowmeter adopts a wide temperature dot matrix LCD display with backlight, all displays are in Chinese, with multiple functions and practical, especially convenient for users to operate, reducing unnecessary troubles and errors. Fast delivery, low cost and easy maintenance. Compared with other similar products in China: LDE type intelligent electromagnetic flowmeter is designed by our company using the principle of full intelligence. And there is a big difference in service life. The service life of the electromagnetic flowmeter should be more than 10-20 years, so we fully consider this point in the design, we are very careful in every detail from the sensor to the converter, from design, material selection, process, production We are very particular about every link such as testing and testing, and we design and customize the most advanced domestic production lines for dedicated and electromagnetic flowmeters to ensure the long-term quality of products. The plug-in electromagnetic flowmeter is composed of a plug-in electromagnetic flow sensor (referred to as sensor) and an electromagnetic flow converter (referred to as converter) (referred to as flowmeter).

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