The measurement of the flow rate is very complicated. In order to achieve the purpose of accurate measurement, it is necessary not only to understand the principle and characteristics of the flowmeter, but also to pay attention to the related matters of the entire measurement system. In terms of use, attention needs to be paid to the selection, installation, use, and maintenance of several links to ensure the correct and reasonable use of the meter.
Selection considerations
(1) The choice of electromagnetic flowmeter lining will directly affect the correct use and life of the electromagnetic flowmeter. Therefore, according to the measured fluid temperature, pressure, speed, solid particle hardness, content and size of the particles to determine the choice of different liners.
(2) The range of the electromagnetic flowmeter should be suitable for the actual needs of the process parameters. The process range is 80% to 90% of the range of the selected electromagnetic flowmeter; the lower limit of the measurement must consider the signal-to-noise ratio of the electromagnetic flowmeter detector; the range of fluid pressure that it can accommodate is: -0.098 MPa to 2.941 MPa because of the fluid pressure. Too high will affect the life of the electrode. Too low may cause the liner to come off.
(3) If the fluid contains magnets such as iron sand, it will disturb the instrument's magnetic field and produce a corresponding error; if the fluid contains bubbles. The measured flow rate is the volumetric flow rate including the bubbles; if the fluid has precipitation or scarring phenomenon. It will cause the electrode to be covered by foreign matter and cause zero fluctuation of the instrument. At present, some electromagnetic flowmeters use an ultrasonic method on their measuring electrodes to eliminate fluid deposition and crusting on the electrodes.
(4) Particles in the fluid may hit the electrode and form spike noise. Affects the stability of the flowmeter indication. In this case, an electromagnetic flow meter covering the electrodes with a porous ceramic or conductive rubber may be used.
The measurement of the flow rate is very complicated. In order to achieve the purpose of accurate measurement, it is necessary not only to understand the principle and characteristics of the flowmeter, but also to pay attention to the related matters of the entire measurement system. In terms of use, attention needs to be paid to the selection, installation, use, and maintenance of several links to ensure the correct and reasonable use of the meter.
Sewage flow meter how to choose the right type - Ao Ke Instrument Co., Ltd. - Wei Gong
Selection considerations
(1) The choice of electromagnetic flowmeter lining will directly affect the correct use and life of the electromagnetic flowmeter. Therefore, according to the measured fluid temperature, pressure, speed, solid particle hardness, content and size of the particles to determine the choice of different liners.
(2) The range of the electromagnetic flowmeter should be suitable for the actual needs of the process parameters. The process range is 80% to 90% of the range of the selected electromagnetic flowmeter; the lower limit of the measurement must consider the signal-to-noise ratio of the electromagnetic flowmeter detector; the range of fluid pressure that it can accommodate is: -0.098 MPa to 2.941 MPa because of the fluid pressure. Too high will affect the life of the electrode. Too low may cause the liner to come off.
(3) If the fluid contains magnets such as iron sand, it will disturb the instrument's magnetic field and produce a corresponding error; if the fluid contains bubbles. The measured flow rate is the volumetric flow rate including the bubbles; if the fluid has precipitation or scarring phenomenon. It will cause the electrode to be covered by foreign matter and cause zero fluctuation of the instrument. At present, some electromagnetic flowmeters use an ultrasonic method on their measuring electrodes to eliminate fluid deposition and crusting on the electrodes.
(4) Particles in the fluid may hit the electrode and form spike noise. Affects the stability of the flowmeter indication. In this case, an electromagnetic flow meter covering the electrodes with a porous ceramic or conductive rubber may be used.
The measurement of the flow rate is very complicated. In order to achieve the purpose of accurate measurement, it is necessary not only to understand the principle and characteristics of the flowmeter, but also to pay attention to the related matters of the entire measurement system. In terms of use, attention needs to be paid to the selection, installation, use, and maintenance of several links to ensure the correct and reasonable use of the meter.
Selection considerations
(1) The choice of electromagnetic flowmeter lining will directly affect the correct use and life of the electromagnetic flowmeter. Therefore, according to the measured fluid temperature, pressure, speed, solid particle hardness, content and size of the particles to determine the choice of different liners.
(2) The range of the electromagnetic flowmeter should be suitable for the actual needs of the process parameters. The process range is 80% to 90% of the range of the selected electromagnetic flowmeter; the lower limit of the measurement must consider the signal-to-noise ratio of the electromagnetic flowmeter detector; the range of fluid pressure that it can accommodate is: -0.098 MPa to 2.941 MPa because of the fluid pressure. Too high will affect the life of the electrode. Too low may cause the liner to come off.
(3) If the fluid contains magnets such as iron sand, it will disturb the instrument's magnetic field and produce a corresponding error; if the fluid contains bubbles. The measured flow rate is the volumetric flow rate including the bubbles; if the fluid has precipitation or crusting phenomenon. It will cause the electrode to be covered by foreign matter and cause zero fluctuation of the instrument. At present, some electromagnetic flowmeters use an ultrasonic method on their measuring electrodes to eliminate fluid deposition and crusting on the electrodes.
(4) Particles in the fluid may hit the electrode and form spike noise. Affects the stability of the flowmeter indication. In this case, an electromagnetic flow meter covering the electrodes with a porous ceramic or conductive rubber may be used.
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