Venturi flow meters are popular for being simple, sturdy, reliable and inexpensive devices. Their principles of operation are easily understood. However, traditionally there has been no Venturi meter self diagnostic capabilities. In 2008 and 2009 a generic DP meter self diagnostic methodology was proposed. In this paper these DP meter diagnostic principles are discussed specifically with respect to Venturi meters. In this paper the principles are proven with extensive experimental test results from Venturi meters. A diagnostics screen displaying the diagnostic results real time, first suggested in 2009, is discussed and then used to present the experimental results.
