AS 2360.1.2-1993

1 - AS 2360.1.2-1993 MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS - PRESSURE DIFFERENTIAL METHODS - MEASUREMENT USING ORIFICE PLA
4 - PREFACE
8 - Section one. General
8 - 1 Scope
8 - 2 Symbols
8 - 3 Principle of the method of measurement and computation
9 - Section two. Square-edged orifice plates and nozzles with drain holes, in pipes below 50 mm diameter and as inlet and outlet devices
9 - 4 Drain holes through the upstream face of the square-edged orifice plate or nozzle
9 - 4.1 General
9 - 4.2 Square-edged orifice plates
9 - 4.3 ISA 1932 nozzles
9 - 4.4 Long radius nozzles
9 - 5 Square-edged orifice plates installed in pipes of diameter 25 mm less than or equal to D less than 50 mm
9 - 5.1 General
9 - 5.2 Limits of use
9 - 5.3 Discharge coefficients and corresponding uncertainties
10 - 6 No upstream or downstream pipeline
10 - 6.1 General
10 - 6.2 Flow from a large space (no upstream pipeline) into a pipeline or another large space
10 - 6.3 Flow into a large space (no downstream pipeline)
12 - Section three. Orifice plates (except square-edged)
12 - 7 Conical entrance orifice plates
12 - 7.1 General
12 - 7.2 Limits of use
12 - 7.3 Description
13 - 7.4 Pressure tappings
13 - 7.5 Coefficients and corresponding uncertainties
13 - 8 Quarter circle orifice plates
13 - 8.1 General
13 - 8.2 Limits of use
13 - 8.3 Description
14 - 8.4 Pressure tappings
14 - 8.5 Coefficients and corresponding uncertainties
15 - 9 Eccentric orifice plates
15 - 9.1 General
15 - 9.2 Limits of use
15 - 9.3 Description
17 - 9.4 Coefficients and corresponding uncertainties

Specifies the geometry and method of use for conical entrance, quarter circle and eccentric orifice plates. The Standard applies to conduits with diameter less than 50 mm. It is identical with and has been reproduced from BS 1042: Section 1.2:1989.

This Section of BS 1042 : Section 1.2 specifies the geometry and method of use for conical entrance orifice plates, quarter circle orifice plates and eccentric orifice plates. Requirements are also specified for square-edged orifice plates and nozzles under conditions outside the scope of BS 1042 : Section 1.1.NOTE. The titles of the publications referred to in this standard are listed on the inside back cover.

First published as AS 2360.1.2-1993