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3. Flowmeters for closed pipes
The widest range of instruments is available for closed conduits. The physical selection criteria can be examined in the following order.
3.1 Fluid type
The instruments listed in table 1 can be used according to the services (type of fluid) indicated at the top of the column. The presence of a "(1)" indicates that the flowmeter can only be used within certain limits . A float flowmeter with a transparent tube, for example, is not suitable if the liquid is too opaque (see also
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Flowmeters for closed pipes
Flowmeters for free-flowing water
Bibliography
Standards and norms
French Standards Association (AFNOR)
- Flow measurement of fluids by means of depressors inserted in loaded pipes of circular cross-section – Part 1: General principles and requirements - NF EN ISO 5167-1 - 2003
- Flow measurement of fluids by means of depressors inserted in loaded pipes of circular cross-section...
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A list of manufacturers is shown in the table .
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