BS ISO 7194:2008 PDF

Measurement of fluid flow in closed conduits. Velocity-area methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current-meters or Pitot statics tubes

Open preview (PDF)

Title (English):

BS ISO 7194:2008

Measurement of fluid flow in closed conduits. Velocity-area methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current-meters or Pitot statics tubes

Document status:: Active
Format:: Electronic (PDF)
Publication date:: August 29, 2008
ICS:: 17.120.10
SKU:: BS ISO 7194:2008

Delivery type:

Full version50 €Read online 24h10 €Read online 72h15 €

Document language:

enru

Delivery time:Immediate download

Price:50 €

Abstract

1 Scope This International Standard specifies velocity-area methods for measuring flow in swirling or asymmetric flow conditions in circular ducts by means of current-meters or Pitot static tubes. It specifies the measurements required, the precautions to be taken, the corrections to apply, and describes the additional uncertainties which are introduced when a measurement in asymmetric or swirling flow has to be made. Only flows with a negligible radial component are considered, however. Furthermore, it is not possible to make a measurement in accordance with this International Standard if, at any point in the measuring cross-section, the local velocity makes an angle of greater than 40° with the axis of the duct, or where the index of asymmetry Y (defined in Annex F) is greater than 0,15. This International Standard deals only with instruments for measuring local velocity as defined in ISO 3354 and ISO 3966. If Pitot static tubes are used, this International Standard applies only to flows where the Mach number corresponding to local velocities does not exceed 0,25.

Related standards

Mentioned in the description and other BS standards

BS ISO 7194:2008 PDF

Abstract

Related standards

Abstract

Related standards

Measurement of clean water flow in closed conduits — Velocity-area method using current-meters in full condui…

Measurement of fluid flow in closed conduits — Velocity area method using Pitot static tubes

Safety of earth-moving machinery - Specification for lighting, signalling and marking lights, and reflex-refl…

Airframe rolling bearings. Technical specification.

Road vehicles. Types. Terms and definitions.

Water quality. Evaluation of the ´ultimate´ anaerobic biodegradability of organic compounds in digested sludg…

Petroleum and natural gas industries. Drilling and production equipment. Hoisting equipment. Hoisting equipme…

Specification for lifts, escalators, passenger conveyors and paternosters. Building construction requirements.