ORIFICE SYSTEM

摘要

The invention relates to an orifice system, especially for flow measurements in pipes, comprising a hinged member being adapted to be moved between two positions, the first position essentially covering the pipe cross section, and a second position into a recess outside the pipe cross section, wherein the hinged member has an opening thus in the first position allowing the fluid flow only through the opening. The invention also relates to a method for using the orifice system for calibrating pressure sensors mounted upstream and downstream of the orifice.

主权项

1. An orifice system for flow measurements in pipes, the orifice system comprising:
a hinged member being adapted to be moved between two positions, the first position essentially covering the pipe cross section, and a second position into a recess outside the pipe cross section; wherein the hinged member has an opening thus in the first position allowing the fluid flow only through the opening; and at least one pressure sensing means on each side of said hinged member relative to the flow direction, said pressure sensing means being coupled to a measuring unit comparing the pressure on each side of the hinged member when being positioned in said first or second position.