The FPD190 restriction orifice plates are used where there is a requirement either to reduce the line pressure or alternatively to restrict the flowrate to a certain value.
The integral orifice is a flow element can be close -coupled with differential pressure transmitters to make a complete flow meter. It provides easy-to-install, low-cost measurement of the small flows found frequently in plant metering operations and research projects.
A more convenient alternative to simple orifice plates is an assembly comprising an orifice plate mounted in a carrier that already has the correct tapping points fitted. ABB has a wide range of these carrier assemblies for different applications.
The FPD201 is a single- chamber orifice fitting suitable for fiscal (custody transfer) applications. It enables the orifice plate to be inspected and / or replaced without removing the fitting itself from the pipeline.
The FPD470F is a wedge meter with DP connections for flanged remote seals. The flow element consists of a body and wedge flow restriction. This restriction creates a differential pressure in proportion to the square of the volumetric flow rate.
