A transmitter in a process control system for measuring flow rate measures total pressure (P.sub.TOT) and differential pressure (h) of process fluid flowing through a process pipe. The static pressure (P.sub.STAT) is determined based upon the total pressure (P.sub.TOT). The calculated static...http://www.google.ca/patents/US5817950?utm_source=gb-gplus-sharePatent US5817950 - Flow measurement compensation technique for use with an averaging pitot tube type primary element 
