The KOBOLD DOR Series insertion paddle-wheel flowmeter/ flow monitor is a cost-effective means of accurately measuring the flow of water or water-like liquids in completely full, large diameter pipes. The paddle-wheel flowmeter/ flow monitor is inserted into the process piping via a threadolet or suitable fitting. Liquid flow through the pipe results in rotation of the affixed paddle wheel. The rotational speed of the paddle wheel is proportional to the flow velocity, and therefore, proportional to the flow rate in the pipe. The insertion-type design of the DOR insertion paddle-wheel flowmeter/ flow monitor provides a measuring technique that is much less expensive than full-bore flowmeters, especially in larger pipe sizes. Insertion paddle-wheel sensors are a robust measuring technology that boasts exceptional tolerance to dirt and solids.