The flowmeter D-EL is used for liquids, can be mounted to flow vertically and horizontally while keeping a straight section of pipe 10 diameters upstream and 10 diameters downstream. It is manufactured in two versions: the threaded version, and the version to be inserted between flanges wafer. The principle of operation impeller, moved to the flow passage transmits electrical pulses to a Hall sensor, mounted externally, without contact with the liquid, then converted into flow rate, with an accuracy of 2%. It has a totalizer, a compact electronic output 4-20 mA and Analog. In a very simple way you can set two alarms on the entire scale, acting on a membrane keyboard.