Electromagnetic flow meter scale in water reducing use of the measurement

Abstract: the electromagnetic flow meter scale in water reducing use of the measurement information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. We found in the design of water connection to users, according to user's water pipe diameter or table size, some with different water properties should be considered. Such as development zone, a new medical instrument factory, water is divided into production water and domestic water. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the electromagnetic flow meter scale in use the diameter of the measurement of water supply for details. We found in the design of water connection to users, according to user's water pipe diameter or table size, some with different water properties should be considered. Such as development zone, a new medical instrument factory, divided into production in the use of water, domestic water and fire water, including office, production zui big water consumption for 7. 62 m3 / h, unforeseen water by 15% plan to 1. 14 m3 / h, and air conditioning supplementary water 5 m3 / h, total zui large water consumption is 14. 76 m3 / h。 According to the production and living water consumption, a group DN80 meter should be installed, and tube flow velocity is zero at this time. 83m/s。 According to the fire department approval, the enterprise workshop of fire risk for class c, need to install indoor and outdoor fire hydrant. Design institute of design is to build a 200 m3 fire pool, water content meet the indoor fire water consumption. Outdoor fire water are provided by municipal pipe straight outside loop pipe network of water supply, fire hydrant water usage: outdoor fire hydrant water 30 l/S; Indoor fire hydrant water 20 l/S. According to the requirements for fire rules and regulations, shall be installed a set of 6 meter group. Production, living and fire water if it is installed a water meter set 6 electromagnetic flowmeter, on the basis of fire in the specification when production, living water zui big water still have to ensure fire JiaoJiao principles of fire fighting water pipe network, the fire control water quantity and water pressure meet the requirements. Fire water only in the use of fire, when the fire control system don't start at ordinary times, tube is mainly production, living water supply enterprises, tube flow velocity is zero at this time. 22立方米/ s < 0. 3 m/s, can't meet the requirements of electromagnetic flowmeter for velocity range, ie not water consumption of production enterprises implement accurate measurement, it is reluctant to water supply enterprises. This caused by water tube flow velocity mismatch and cases need to users to install two groups of measuring instrument is often encountered in the practical work. Our solution is: 1. When the municipal water supply tubing diameter pipes, pipe fittings and valves, share after the parameters selected according to the system, choose the sensor diameter smaller than connection pipe diameter size of electromagnetic flowmeter, pipe diameter, table size, large diameter and small table size, reducer added before and after installing a connection sensors. As a result, in some local improve the velocity of electromagnetic flowmeter meet the requirements of the instrument for velocity range, makes the water supply enterprise in the water can be under the premise of accurate measuring dual function, save companies a set of metering device of the cost of investment. Such as the water meter fabric become medical instrument factory installed above pipe and valve, check valve 6, diameter electromagnetic flowmeter metering device for the DN100, sensor part of the flow velocity is zero at this time. 47岁的m / s > 0. 3m/s。 2. Reducer to meet the requirements of taper. Electromagnetic flowmeter of inlet and outlet of straight section length requirement, reducer, added before and after the sensor to be seen as part of a straight pipe, should be consistent with the product on the sensor before and after the section of divergent or convergent cone Angle is less than 15 o requirements. So it must be reducer center cone Angle calculation, such as the above DN100 electromagnetic flowmeter, population and the exit according to the atlas of feed water and drainage standard making 6 & times; 100 reducer, after the center cone Angle calculation for 11. 74o < 15o。 3. Reducer can't meet the requirement of taper, must be custom-made extended divergent or reducing pipe. Such as development zone based on a large foreign enterprises to select DN600 electromagnetic flow meter in the original design of the water, the enterprise to the center of water supply for the water meter set construction costs, and because of the requirement of the straight section of electromagnetic flowmeter make water meter room too narrow, we consider the choice small primary and secondary pipe diameter size of the electromagnetic flowmeter, water flow speed in the allowed range. According to the standard atlas reducer size calculation, DN600X400 reducer center cone Angle to 20. 42 o。 DN600× 500 reducer center cone Angle is 16. 3 o, were greater than 15 o, do not meet the requirements of product design. Must therefore be custom-made the mark divergent or reducing pipe, extended reducing the length of the part, reduce center cone Angle and taper requirements within. Anyhow, electromagnetic flow meter used for measurement of water supply, due to its sensors have velocity requirements, but the velocity and the characteristics of wide range, designers can according to user's water consumption and the scene actual situation, make some flexible changes, it saves water meter set of investment, and measuring instrument operation in good working condition. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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