Flow orifice type Meter Run

Meter run are used in small diameter pipelines, because of the roughness of the internai surface of pipe, that affect very much the coefficient of flow of the primary element.

They are used for pipeline size from 1/2’’ (ND 15) until 1” 1/2’’ (ND 40).

Orifice Meter 

Composed of:

• Couple of flange with annular chamber and pressure taps
• Orifice plate accordino to ASME Standard
• Calibrated branch (10 D Upstream – 5D Downstream)

The branch of machined pipe, 10 D upstream and 5 D downstream is minimum length fora good measurement. They are obtained by accurate machining and turning, for assure good uniformity and finish of the measuring section.

Process connections

• Flanged end connection type
• Butt weld end connections type

Pressure taps

Normally supplied with two couple of pressure taps 1/2” NPT-F ANSI B1.20.1. Other thread on request.

Limits of application

• D – from 1/2” (ND 15) to 1” 1/2 (ND 40) mm
• Re – from 1000
• β – from 0,1 to 0,8