Main points of selecting electromagnetic flowmeter
1. precision grade and function
according to the measurement requirements and use of the instrument to select the accuracy of the meter, to achieve economic cost. For example, for trade settlement, product handover and energy metering occasions, should choose a higher level of precision, such as 1. Level 0, 0. Level 5, or higher level; For process control occasions, according to the control requirements of the selection of different precision grades; some just check the process flow, no need to do precise control and measurement of the occasion, you can choose a slightly lower precision level, such as 1. Level 5, 2. Level 5, even 4. Level 0, at which point the low-cost insertion of the electromagnetic flowmeter can be selected.
Different types of electromagnetic flowmeter function difference is also very large, simple can only measure one-way flow, some only output analog signals, multi-function can be two-way flow measurement, range switching, upper and lower alarm, air pipe alarm, remote communication and so on. The selector should be based on different requirements to determine the use of different functions of the flowmeter.
2. When measuring medium velocity, instrument range and aperture measurement of general media, the full degree flow of the electromagnetic flowmeter can be measured in the medium flow rate 0. 5-12m/s range of selection, wide range. Select the instrument specification (caliber) not necessarily the same as the process pipe, whether the measured flow range is determined within the velocity range, that is, when the pipeline velocity is low, can not meet the flow meter requirements or the measurement accuracy at this velocity can not be guaranteed, it is necessary to reduce the instrument aperture, so as to improve the flow rate in the pipe, obtain satisfactory results.Measurement of good conductivity of liquids, usually the maximum flow rate does not exceed 5m/s, economic flow rate range of 1. 5m/s~3m/s.To measure the low conductivity of the fluid, as far as possible to choose a low flow rate, the reason is that the flow rate increases the noise will increase, resulting in flow signal output shaking phenomenon.Measurement of easy adhesion, easy deposition, scale of the fluid, flow rate is not less than 2m/s, preferably to 3~4m/s, so as to avoid adhesion, deposition and scaling occur.
Welcome to our website to learn more information: http://www.aft-flowmeter.com/
according to the measurement requirements and use of the instrument to select the accuracy of the meter, to achieve economic cost. For example, for trade settlement, product handover and energy metering occasions, should choose a higher level of precision, such as 1. Level 0, 0. Level 5, or higher level; For process control occasions, according to the control requirements of the selection of different precision grades; some just check the process flow, no need to do precise control and measurement of the occasion, you can choose a slightly lower precision level, such as 1. Level 5, 2. Level 5, even 4. Level 0, at which point the low-cost insertion of the electromagnetic flowmeter can be selected.
Different types of electromagnetic flowmeter function difference is also very large, simple can only measure one-way flow, some only output analog signals, multi-function can be two-way flow measurement, range switching, upper and lower alarm, air pipe alarm, remote communication and so on. The selector should be based on different requirements to determine the use of different functions of the flowmeter.
2. When measuring medium velocity, instrument range and aperture measurement of general media, the full degree flow of the electromagnetic flowmeter can be measured in the medium flow rate 0. 5-12m/s range of selection, wide range. Select the instrument specification (caliber) not necessarily the same as the process pipe, whether the measured flow range is determined within the velocity range, that is, when the pipeline velocity is low, can not meet the flow meter requirements or the measurement accuracy at this velocity can not be guaranteed, it is necessary to reduce the instrument aperture, so as to improve the flow rate in the pipe, obtain satisfactory results.Measurement of good conductivity of liquids, usually the maximum flow rate does not exceed 5m/s, economic flow rate range of 1. 5m/s~3m/s.To measure the low conductivity of the fluid, as far as possible to choose a low flow rate, the reason is that the flow rate increases the noise will increase, resulting in flow signal output shaking phenomenon.Measurement of easy adhesion, easy deposition, scale of the fluid, flow rate is not less than 2m/s, preferably to 3~4m/s, so as to avoid adhesion, deposition and scaling occur.
Welcome to our website to learn more information: http://www.aft-flowmeter.com/
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