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

Название (английский):

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

Статус документа:: Действующий
Формат:: Электронный (PDF)
Дата публикации:: 29 августа 2008 г.
ICS:: 17.120.10
SKU:: BS ISO 7194:2008

Тип поставки:

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

Язык документа:

ruen

Срок поставки:1 раб. дн. (перевод)

Цена: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.

BS ISO 7194:2008 PDF

Abstract

Похожие стандарты

Abstract

Похожие стандарты

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

Aerospace series. Circuit breakers. Test methods. Performance with a locked tripping system.

Information technology. Electronic discovery. Technical readiness.

Test conditions for machining centres. Accuracy and repeatability of positioning of linear and rotary axes.

Aerospace series. Acrylonitrile-butadiene rubber (NBR). Low temperature resistant. Hardness 60 IRHD.

Mountaineering equipment. Frictional anchors. Safety requirements and test methods.

Health Informatics. General purpose information components. Non-clinical.