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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Equipotential conductive links usually copper braids should be fitted across both flange joints see Figure 6. It should be possible to remove the quadrature signal but complications arise when, for example, liquid conductivity is not uniform or earthing difficulties exist.

It is ne that account is taken of any other chemicals liable to pass through the meter tube, such as sterilizing agents, cleaners and solvents. However, it is useful to recall some general principles and to present the way in which they apply to measurement using an electromagnetic flowmeter. One or more pairs of electrodes, diametrically-opposed, are set into the wall such that the diameter on which they lie, the magnetic field and the flow direction are mutually orthogonal.

This usage also aligns with that in ISO Some of the earliest applications were concerned with measuring the flow rate of bloodKolin If these details are to be used 687 any other purpose than implementation then the prior written permission of BSI must be obtained.

We have no amendments or corrections for this standard. This approach is generally used on crystalline-type coatings.

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The scraper is driven by an external electric motor via fluid pressure seals. At the time of publication, the editions indicated were valid. If the document is revised or amended, you will be notified by email. The shaft length and the frequency of ultrasound are chosen to produce an antinode at the electrode face. Eccentric taper pipes shall be used when the pipeline is horizontal, to prevent air pockets from forming.

Subscription pricing is determined by: The connection between the liquid and the primary device body may be made by contact with the adjacent 68817 or, where insulated or non-conductive pipework is used, by conductive earthing rings or electrodes.

It supersedes BS This will be indicated in the amendment table on the inside front cover. A heterogeneous fluid composed of small particles uniformly distributed in a medium can be considered as a homogeneous liquid. Permissible values should be checked with the manufacturer.

This effect has been minimized by the designs of the pole pieces. Reference should also be made to ISO for fuller information on this subject. The system iao an output signal proportional to volume flow-rate or average velocity. Means should be provided for adjusting and aligning the adjacent pipework. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, the EN ISO title page, pages 2 to 20, an inside back cover and a back cover.

BS EN ISO 6817:1997

The pulsed direct current d. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover.

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Users of British Standards are responsible for their correct application. It presents the UK view on standards in Europe and at the international level.

BS EN ISO – PDF Free Download

General guidance on various aspects of the primary device is set out in 7. If you need help with the purchase or have any queries please email enquiries standards. Wafer types require special care.

It has good wear resistance properties. Except as permitted under the Copyright, Designs and Patents Act no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means — electronic, photocopying, recording or otherwise — without prior written permission from BSI. An additional benefit is that the zero is continually reestablished, avoiding the earlier problems associated with zero drift [Baker ].

These normative references are cited at the een places in the text and the publications are listed hereafter. Remember me Forgot password?

Learn more about the cookies we use and how to change your settings. If the conductivity is not uniform throughout the meter, errors may also occur. Customers who bought this product also bought BS EN Describes ne principle and main design features of industrial electromagnetic flowmeters both a. It covers their installation, operation, performance and calibration.