BS EN ISO 6817 PDF

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BS EN ISO Measurement of conductive liquid flow in closed conduits – Method using electromagnetic flowmeters. BS EN ISO Measurement of conductive liquid flow in closed conduits. Method using electromagnetic flowmeters. standard by British. Home; ISO File Size: 1 file, MB; Same As: BS EN ISO , BS EN ISO Document History. ISO

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International Classification for Standards ICS is an international classification system for technical standards. Search all products by. We share information about your activities on the site with our partners and Google partners: Though this can be 7.

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Details and advice can be obtained from the Copyright Isk. Part 2BSBS Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. NOTE 2 Additional information such as trademark, mass of unit, date of manufacture, flow direction arrow, etc.

International Organization for Standardization Measurement of conductive liquid flow in closed conduits – method using electromagnetic flowmeters. The same applies if 617 offset is in the negative direction.

You may experience issues viewing this site in Internet Explorer 9, 10 or Year Book Medical Publishers. The meter should be installed in a straight pipe at a distance of at least 10 times the nominal diameter 10 DN from any upstream disturbance and 5 DN downstream.

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ELECTROMAGNETIC FLOWMETERS

It is essential that the primary device is correctly aligned on the pipe axis when it is bolted into the pipework. The combination of the random and systematic errors may therefore be treated as though all were truly random and, according to em ISOthe relative standard deviation of the flow-rate measurement may be taken as the square root of the sum of the squares of the relative standard deviations arising from the various sources.

Isoo version in any other language made by translation under the responsibility of a Izo member into its own language and notified to the Central Secretariat has the same status as the official versions. These cables should be as short as possible and not exceed the enn imposed by the manufacturer. It is identical with ISO Locations close to electrical equipment which may interfere with the flow measurement signal, or locations where currents may be induced in the primary device, should be avoided.

Some of the earliest applications were concerned with measuring the flow rate of bloodKolin It has excellent wear resistance against small particles, and is chemically inert. Part 2BS Bss of fluid flow in closed conduits Section 2. Lifting by any means that could damage the liner, for example, hooks in the bore, shall not be used. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.

Method using electromagnetic flowmeters Status: Find Similar Items This product falls into the following categories. Eccentric taper pipes shall be used when the pipeline is horizontal, to prevent air pockets from forming.

Remember bss Forgot password? If the typical electrodes, e.

Standard BS EN ISO

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. This International Standard does not specify safety requirements in relation to hazardous environmental usage of the meter, nor does it apply to the measurement of magnetically permeable slurries, liquid metals nor usage in medical applications.

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Systematic errors cannot be reduced by repeating measurements, since they arise from the characteristics of the measuring apparatus, the installation and the flow characteristics. Although systematic errors have been distinguished from random errors, the probability distribution of the possible values of each systematic component is essentially Gaussian. Describes the principle and main sn features of industrial flowmeters in a conduit running full.

BS EN ISO 6817

The choice of liner material depends mainly on the liquid, which can range from slurries or molasses to chemically-aggressive mixtures or molten metals. This error comprises both systematic and random components depending upon the conditions of the flowmeter calibration, and can vary for each test point of the calibration curve. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.

The manufacturer should state the maximum permissible torque. He realized that since the velocity profile of a flowing liquid was rarely flat, the emf existing 687 the pipe diameter deriving from the central velocity would be effectively shunted by those from the slower moving flows near the pipe wall.

If the field is perpendicular to an electrically-insulated pipe which contains the moving liquid and if the electrical conductivity of the liquid is not too low, a voltage may be measured between two electrodes on the wall of bbs pipe. Covers their installation, operation, performance and calibration.