DN300 electromagnetic flowmeter is a meter that measures volume flow according to Faraday's law of electromagnetic induction. It is only suitable for conductive liquid flow measurement. The output current has a linear relationship with the instantaneous flow and is not affected by the physical properties of the fluid (temperature, pressure, density, and viscosity). Affected, the cumulative flow is output by the pulse signal. The electromagnetic flowmeter has a wide measuring range. The same electromagnetic flowmeter can reach 1:100, and its caliber can also be from 1cm to 2m. In recent years, electromagnetic flowmeters have been used more and more widely in water supply companies due to their high measurement accuracy, good stability, and rapid response.
Application of DN300 electromagnetic flow meter in water supply enterprises 1) Use as a water meter. The settlement water meter is an important settlement tool for the water company's economic income. Flowmeter management procedures include: purchase of electromagnetic flowmeters (costs included in installation costs), calibration of quality reports, unified archival filing, installation (2 lock management: 1 user, 1 water division), setting factor reporting to the unified archive , Use, regular check. In the aspect of water data monitoring: large-caliber 24-hour GPRS real-time data transmission, and setting up abnormal flow alarm; Small-caliber mobile phone GSM timing acquisition, in order to achieve effective monitoring of data.
(2) Installed in the urban pipe network for area measurement. Regional metering measures the surrounding large branch water supply and considers the rate of recovery of the water in the area. If the difference is too large, leaks or inspections of violations are required. Through regional measurement, the total "recovery rate" is decomposed, from the local to the overall level, to provide assessment basis for the target management. At present, Huizhou City Water Supply Co., Ltd. has four large-scale submarine pipe branches in the suburbs, some of which are DN600 and DN800. The flow rate is large, the pipes are relatively new, and there are not many leakage losses. Therefore, we have chosen measurement accuracy and high sensitivity. , Use the electromagnetic flowmeter with good stability and wide measuring range.
(3) For the water metering of the water plant. Electromagnetic flowmeters for water metering in water plants are mainly used to provide an effective basis for production and management. The most direct role of the electromagnetic flowmeter installed in the water plant is to provide real-time water production, which facilitates automated control of water purification and chlorine injection, calculates drug consumption, chlorine consumption, and power consumption, and effectively treats and controls the cost of water purification. Provide real-time basis; on the other hand, when the suction pump room is normally started, abnormal flow can be displayed through the inflow flow meter, and the failure of the upper water pipeline explosion or unit abnormality can be timely reflected. The factory water flow meter can participate in the dispatch of the city pipe network together with the factory water pressure to ensure the proper water supply pressure; it can also provide reference for the operation of the pump room unit.
Although the electromagnetic flowmeter has less interference, the measurement accuracy and stability are relatively good, but in order to more accurate measurement and long-term stability, it is generally used for the regular calibration of imported ultrasonic flowmeter with the same level of accuracy. We purchased a portable time difference ultrasonic flowmeter and a portable handheld ultrasonic flow measurement system (with ultrasonic thickness gauge) to regularly calibrate the measurement error of the instrument. After three to four years of actual use, the reading error of the electromagnetic flowmeter and ultrasonic flowmeter of the same level of accuracy is within 3%, which is basically acceptable.
Problems encountered in the use of DN300 electromagnetic flowmeter 2.1 Lightning protection problems Regardless of whether it is a clear water meter or a regionally-measured electromagnetic flowmeter, in the more open suburbs, especially in Guangdong, where the lightning storm covers a large area, electromagnetic flowmeters are Lei is a more severe test. After strict grounding and power protection, the electromagnetic flow meters installed in open areas are still highly prone to lightning strikes. Each of our four flowmeters for area flow measurement is damaged by lightning at least 2 times a year, and it cannot be repaired. Only new converters can be purchased and the cost is high. Other water divisions usually use electromagnetic flowmeters to build houses, make ground nets, and install lightning rods to avoid lightning. The effect is obvious. However, the Water Division must also solve the problem of land use rights and coordination with the surrounding environment. The procedures are more complicated. Therefore, the simplest and most effective method is to improve the lightning protection performance of the flowmeter itself. If it cannot be solved fundamentally, the internal circuit of the flowmeter should be separated and protected so that even if the lightning strike is damaged, the replacement cost can be reduced.
2.2 Power Supply Problems Because the electromagnetic flowmeter requires an external power supply, it is inconvenient to install outdoors, and it also limits the use of electromagnetic flowmeters in the suburban pipeline network. In addition, the electromagnetic flowmeter does not come with its own power supply. Once the power is turned off, it will cause the loss of flow meter data for use as a clearing water meter. This also raises new problems in the measurement and calculation of the amount of water that is lost during the power interruption period. Users are dealt with case handling, which adds a lot of work. If the electromagnetic flowmeter can bring its own power supply, it can fundamentally solve this problem, it will also promote its promotion and application in the settlement of water meters.
2.3 Signal transmission problems The electromagnetic flowmeter used in the regional pipeline network can provide certain decision-making information for urban water supply dispatch. Therefore, we hope that the electromagnetic flow signals, whether used for user settlement or regional pipe network, are continuous in real time. Current electromagnetic flowmeters require water companies to develop or use other data transmission systems in addition to real-time data monitoring. This will not only increase the cost of investment, but also increase the difficulty of operation and management. If the electromagnetic flowmeter can complete the signal automatic conversion and wireless transmission in the instrument itself, reduce the data collection compatibility or mutual conversion and other issues, it will provide convenience for the enterprise, it will also increase the application of electromagnetic flowmeter Advantage.
DN300 Electromagnetic flowmeter Conclusion Electromagnetic flowmeter has high measuring accuracy, high sensitivity and good stability. Its measurement application in water supply enterprises will be more and more widely, especially in factories, communities and other places with large caliber and better installation environment, electromagnetic The use of flow meters has been very mature. Once the electromagnetic flowmeter can solve problems such as self-contained power supply and data transmission, its use prospects will be even brighter.
DN300 electromagnetic flowmeter
Application of DN300 electromagnetic flow meter in water supply enterprises 1) Use as a water meter. The settlement water meter is an important settlement tool for the water company's economic income. Flowmeter management procedures include: purchase of electromagnetic flowmeters (costs included in installation costs), calibration of quality reports, unified archival filing, installation (2 lock management: 1 user, 1 water division), setting factor reporting to the unified archive , Use, regular check. In the aspect of water data monitoring: large-caliber 24-hour GPRS real-time data transmission, and setting up abnormal flow alarm; Small-caliber mobile phone GSM timing acquisition, in order to achieve effective monitoring of data.
(2) Installed in the urban pipe network for area measurement. Regional metering measures the surrounding large branch water supply and considers the rate of recovery of the water in the area. If the difference is too large, leaks or inspections of violations are required. Through regional measurement, the total "recovery rate" is decomposed, from the local to the overall level, to provide assessment basis for the target management. At present, Huizhou City Water Supply Co., Ltd. has four large-scale submarine pipe branches in the suburbs, some of which are DN600 and DN800. The flow rate is large, the pipes are relatively new, and there are not many leakage losses. Therefore, we have chosen measurement accuracy and high sensitivity. , Use the electromagnetic flowmeter with good stability and wide measuring range.
(3) For the water metering of the water plant. Electromagnetic flowmeters for water metering in water plants are mainly used to provide an effective basis for production and management. The most direct role of the electromagnetic flowmeter installed in the water plant is to provide real-time water production, which facilitates automated control of water purification and chlorine injection, calculates drug consumption, chlorine consumption, and power consumption, and effectively treats and controls the cost of water purification. Provide real-time basis; on the other hand, when the suction pump room is normally started, abnormal flow can be displayed through the inflow flow meter, and the failure of the upper water pipeline explosion or unit abnormality can be timely reflected. The factory water flow meter can participate in the dispatch of the city pipe network together with the factory water pressure to ensure the proper water supply pressure; it can also provide reference for the operation of the pump room unit.
Although the electromagnetic flowmeter has less interference, the measurement accuracy and stability are relatively good, but in order to more accurate measurement and long-term stability, it is generally used for the regular calibration of imported ultrasonic flowmeter with the same level of accuracy. We purchased a portable time difference ultrasonic flowmeter and a portable handheld ultrasonic flow measurement system (with ultrasonic thickness gauge) to regularly calibrate the measurement error of the instrument. After three to four years of actual use, the reading error of the electromagnetic flowmeter and ultrasonic flowmeter of the same level of accuracy is within 3%, which is basically acceptable.
Problems encountered in the use of DN300 electromagnetic flowmeter 2.1 Lightning protection problems Regardless of whether it is a clear water meter or a regionally-measured electromagnetic flowmeter, in the more open suburbs, especially in Guangdong, where the lightning storm covers a large area, electromagnetic flowmeters are Lei is a more severe test. After strict grounding and power protection, the electromagnetic flow meters installed in open areas are still highly prone to lightning strikes. Each of our four flowmeters for area flow measurement is damaged by lightning at least 2 times a year, and it cannot be repaired. Only new converters can be purchased and the cost is high. Other water divisions usually use electromagnetic flowmeters to build houses, make ground nets, and install lightning rods to avoid lightning. The effect is obvious. However, the Water Division must also solve the problem of land use rights and coordination with the surrounding environment. The procedures are more complicated. Therefore, the simplest and most effective method is to improve the lightning protection performance of the flowmeter itself. If it cannot be solved fundamentally, the internal circuit of the flowmeter should be separated and protected so that even if the lightning strike is damaged, the replacement cost can be reduced.
2.2 Power Supply Problems Because the electromagnetic flowmeter requires an external power supply, it is inconvenient to install outdoors, and it also limits the use of electromagnetic flowmeters in the suburban pipeline network. In addition, the electromagnetic flowmeter does not come with its own power supply. Once the power is turned off, it will cause the loss of flow meter data for use as a clearing water meter. This also raises new problems in the measurement and calculation of the amount of water that is lost during the power interruption period. Users are dealt with case handling, which adds a lot of work. If the electromagnetic flowmeter can bring its own power supply, it can fundamentally solve this problem, it will also promote its promotion and application in the settlement of water meters.
2.3 Signal transmission problems The electromagnetic flowmeter used in the regional pipeline network can provide certain decision-making information for urban water supply dispatch. Therefore, we hope that the electromagnetic flow signals, whether used for user settlement or regional pipe network, are continuous in real time. Current electromagnetic flowmeters require water companies to develop or use other data transmission systems in addition to real-time data monitoring. This will not only increase the cost of investment, but also increase the difficulty of operation and management. If the electromagnetic flowmeter can complete the signal automatic conversion and wireless transmission in the instrument itself, reduce the data collection compatibility or mutual conversion and other issues, it will provide convenience for the enterprise, it will also increase the application of electromagnetic flowmeter Advantage.
DN300 Electromagnetic flowmeter Conclusion Electromagnetic flowmeter has high measuring accuracy, high sensitivity and good stability. Its measurement application in water supply enterprises will be more and more widely, especially in factories, communities and other places with large caliber and better installation environment, electromagnetic The use of flow meters has been very mature. Once the electromagnetic flowmeter can solve problems such as self-contained power supply and data transmission, its use prospects will be even brighter.
DN300 electromagnetic flowmeter
This kind of single wall flange is the usual collar used on the pipe, we have SK flange , MF(Male and Female)flange, ZX flange and so on, these single wall flanges always used on the single wall pipe and elbow, usually size is 148mm and 157mm, this kind of flange used with the single wall pipe, st52 pipe , also with elbow, rubber hose. If you have any needs, please contact us, we will provide competitive price, best service , timely delivery, to our every customers . we desire to establish long term trade rlations with costomers at home and abroad. we sincerely welcome you to our company for visit.
Concrete Pump Single Wall Collar
Concrete Pump Single Wall Collar,Concrete Pump Flange,Concrete Pump Hd Flange
Hebei Shengdebaolong International Trading Co.,ltd , https://www.sdblpumpparts.com