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AS 2360.1.1:1993

AS 2360.1.1:1993

$41.60

Measurement of fluid flow in closed conduits – Pressure differential methods – Measurement using orifice plates, nozzles or Venturi tubes – Conduits with diameters from 50 mm to 1200 mm

Published By Publication Date Number of Pages
AS 1993-12-20 69
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Specifies the geometry and method of use for orifice plates, nozzles and Venturi tubes for the determination of fluid flow rate in a closed conduit running full. Information for the calculating of a flow rate and its associated uncertainty is included. The Standard applies to conduits with diameters within the range 50 mm to 1200 mm inclusive. It is identical with and has been reproduced from ISO 5167-1:1991.

Scope

This part of ISO 5167 specifies the geometry and method of use (installation and operating conditions) of orifice plates, nozzles and Venturi tubes when they are inserted in a conduit running full to determine the flow-rate of the fluid flowing in the conduit. It also gives necessary information for calculating the flow-rate and its associated uncertainty. It applies only to pressure differential devices in which the flow remains subsonic throughout the measuring section and is steady or varies only slowly with time and where the fluid can be considered as single-phase. In addition, each of these devices can only be used within specified limits of pipe size and Reynolds number. Thus this part of ISO 5167 cannot be used for pipe sizes less than 50 mm or more than 1 200 mm or for pipe Reynolds numbers below 3 150. It deals with devices for which direct calibration experiments have been made, sufficient in number, spread and quality to enable coherent systems of application to be based on their results and coefficients to be given with certain predictable limits of uncertainty. The devices introduced into the pipe are called "primary devices". The term primary device also includes the pressure tappings. All other instruments or devices required for the measurement are known as "secondary devices". This part of ISO 5167 covers primary devices; secondary devices 1)will be mentioned only occasionally.

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AS 2360.1.1:1993
$41.60