ISO 10780:1994 Preview
Stationary source emissions -- Measurement of velocity and volume flowrate of gas streams in ducts
This standard was last reviewed and confirmed* in 2016.
*Therefore this version remains current
Specifies manual methods for determining the velocity and volume flowrate of gas streams in ducts, stacks and chimneys vented to the atmosphere. Specifies the use of two types of Pitot tubes, type L und type S, for determining the velocity and the volume flowrate for each type of Pitot tube. Applies to gas streams with essentially constant density, temperature, flowrate and pressure at the sampling point.