Further methods of measuring volumetric flow

Because of its low pressure drop capability, the pitot tube is gaining popularity in the form of the averaging pitot tube or Annubar which is a variation of the standard pitot tube. This uses multiple sampling points across a pipe or duct in order to provide a representation of the full flow profile. 

Type of Flowmeter Reference Measures Volume or Mass Flow Oases or Vapours Steam Liquids Slurries Operating Temperature of Sensor K) 

Orifice- square edge Volume 1 Section 6.3.3 Volume Yes No Yes Yu No Usually Usually No No 800 

Venturi Volume 1 Section 6.3.5 Volume Yes Usually Yes Yes Usually Usually Usually Usually Usually 800 

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