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Outside the clip-on super wave flow meter is the reasonable choice of ultrapure water flow measurement

by:KAIDI     2020-10-07
Petroleum, chemical industry, water treatment and other industries need to measure will meet all kinds of liquid medium, such as a variety of chemical solvents, all kinds of mixture, tap water, industrial or domestic sewage, etc. Liquid with low dielectric constant can be chosen meter measuring instrument with electromagnetic flowmeter, turbine flowmeter, and other products. But in the pharmaceutical and food industries for water quality requirement is very high, often pure water or ultrapure water need to measure flow, for pure water and ultrapure water to choose what kind of flow meter is appropriate? In this paper, the problem and the outer clamp type super wave flow meter in the field of application for a discussion with you. As we know, pure water and ultrapure water is a kind of high water quality requirements. Used for making pure water and ultrapure water ultraclean filter cartridge is made from pure polypropylene filter device, using active carbon to remove inorganic and organic trace pollution of ion exchange resin ( Nuclear level) And adsorption resin and special ion exchange resin ( Nuclear level) Removal of inorganic ions, through the adsorber resin removal of dissolved organic matter, disinfection filter pore size zero. 2μ M, after such purification equipment to get the pure water and ultrapure water conductivity: 0. 055μ S/cm, bacteria: 1 CFU/ml, commonly used in biological pharmaceutical require higher areas. Before we choose what kind of traffic, we * first to compare the application conditions of various kinds of flowmeter. 1, the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction, used to measure the electrical conductivity is greater than 5 & mu; S/cm, the volume flow of conducting liquid is a kind of measuring volume flow of conducting medium induction meter. Electromagnetic flowmeter in addition to measuring general conductive liquid volume flow, also can be used to measure the acid alkali etc of strongly corrosive liquid and slurry, pulp and paper pulp evenly liquid-solid two phase suspension liquid volume flow. Due to the conductivity of the pure water is only 0. 055μ S/cm, far less than 5 & mu; S/cm, so electromagnetic flowmeter can be excluded. 2, turbine flowmeter, it is the main species in the speed meter, when the flow sensor through the turbine flowmeter, the body under the action of fluid, force rotating impeller, its speed is proportional to the mean velocity of pipe, at the same time, the blade cutting electromagnet field lines, periodically change coil magnetic flux, according to the principle of electromagnetic induction, within the coil will sense the voltage signal of the pulse, the electric pulse signal, the electrical pulse signal is directly proportional to the frequency and the flow of traffic. Thus, turbine flowmeter is a non-contact measurement, and the pure water and ultrapure water particularly high requirements for material, so when manufacturing must use 316 l, the main use of health type clamp connector, the production cost is increased immediately. 3, vortex flowmeters, orifice flow meter is a non-contact measurement, no doubt will direct contact with fluid, and lead to different degrees of pollution, which is not a better choice. , then, choose what kind of flowmeter can for pure water, ultrapure water system device? For medicine and food industries requirements and physical characteristics of pure water and ultrapure water itself, there is no doubt that we need the flow measurement instrument must have the following: 1, the measurement parts don't direct contact with measured medium, to ensure that the measured liquid cannot be subject to any form of pollution. 2, measuring instrument must be under the influence of high and low dielectric constants of the measured liquid. 3, the installation of the measuring instrument and measuring data not to be affected by the measured diameter size. According to the requirements of the RZ - 1158 c clip type ultrasonic flowmeter is used to measure such liquid good representative, RZ - 1158 c series outer clamp type ultrasonic flowmeter using time difference measuring principle: a probe signal through the wall, after medium, the other side of the wall, by another probe to receive, at the same time, the two probe emission signal is same * first probe to receive, due to the influence of medium velocity, the lag in & Delta; T, according to the calculation can be concluded that the velocity V and lag & Delta; T the conversion relationship between the V = ( C2/2L) × Δ T, then can get the flow value Q. Outer clamp type ultrasonic flowmeter is a kind of non-contact instrument, it can measure flow of medium or big diameter can also be used for measuring the medium is not easy to contact and observation. Its measurement accuracy is very high, almost not affected by the interference of the various parameters of the measured medium, especially can solve other instrument can't strong corrosion resistance, electrical conductivity, radioactive and flammable and explosive medium flow measurement problem. At this point, we believe that the ultrasonic flowmeter is ultrapure water purified water system equipment to measure flow of choice. In this paper by embellish instrument technology co. , LTD. Arrange release. p { 文本- - - - - - 缩进:2 em; / * em is relative unit, 2 em now twice the size of a word * /}
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