Vorrichtung zur Anzeige der Verschmutzung eines zugefuehrten stroemungsfaehigen Mediums fuer ein fluidisches System

摘要

A fluid flow filter having filter hole openings of a selected size or of size smaller than the smallest fluid opening in a fluid circuit being monitored by the contamination-indicating device is serially connected with a fluid flow restrictor for bypassing a small portion of the supply fluid. A pressure-sensitive indicator is connected to the juncture of the filter output and restrictor for indicating the pressure state at the juncture. A high pressure state indicates negligible contamination of the fluid whereas a low pressure state indicates substantial contamination thereof.