Patent ID: 6443014
Filing Date: 2002-09-03
Classification: G01F,G05D

Abstract:
A proportioner for proportioning a fluid flow from an input side of a first proportioning element to an output side of a second proportioning element, comprising:said first and second proportioning elements, a proportioning element comprising: a membrane provided with at least one opening acting as a flow resistor for a medium to be proportioned, and a pressure sensor integrated with the membrane and used for detecting a pressure difference between the input side and the output side of each proportioning element, a pressure transducer for input side application of pressure to the medium to be proportioned, wherein the first and the second proportioning elements are arranged in succession so as to permit, based on a pressure drop across the membranes of the first and second proportioning elements, detection of either clogging or blocking of the respective opening provided in said membranes.