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2. Theory of differential pressure flow measurement
2.1 Incompressible fluids
A fluid is considered incompressible if its density does not vary significantly under the effect of the negative pressure used to measure its flow velocity. Since this article is primarily concerned with the engineering and practical aspects of flow measurement using depressurizers, we will confine ourselves to theoretical developments, which can be consulted in the basic literature. A brief summary can be given, however, based on the energy conservation equation established in 1738 by Daniel Bernoulli for an incompressible fluid:
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Theory of differential pressure flow measurement
Different types of depressants
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Standards and norms
- Flow measurement of fluids by means of depressurizers inserted in loaded pipes of circular cross-section – Part 1: General principles and requirements. Association française de normalisation Afnor - NF EN ISO 5167-1 - juin 2022
- Flow measurement of fluids by means of depressurizers inserted in loaded pipes of circular cross-section – Part 2: Diaphragms - NF EN ISO 5167-2 - Juin 2022
- Flow measurement of fluids...
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