Mechanical laboratory methods; a testing of instruments and machines in the mechanical engineering laboratory and in practice (1918)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 133
e water may be undera pressure greater than atmospheric which would cause it torise in the Pitot tube to a height greater than that due to velocity.This may be allowed for by making a separate measurementof pressure. Thus, in Fig. 65, H2 ft. of water balances veloc-ity plus pressure, and Hi ft. in… … velocity opening and the the other, the ** static opening. Theyare often connected to a differentialgage as shown by the dotted lines of Fig. 65.—Pitot Meter. 24 FLOW METERS 113 Fig. 65 so that the pressure is balanced, and a single readinggives the velocity head direct. The plane of the static…
Mechanical engineering laboratories
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