Fluid Flow Measurement in the Mid-1970's: Proceedings of a Conference Held at the National Engineering Laboratory, 8-10 April 1975 ... |
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Page 138
... output from the meter begins to be counted ; at A the diverter valve is fully open , and the whole of the available flow passes into the measuring tank from A to B. At B the diverter valve begins to close , and simultaneously counting ...
... output from the meter begins to be counted ; at A the diverter valve is fully open , and the whole of the available flow passes into the measuring tank from A to B. At B the diverter valve begins to close , and simultaneously counting ...
Page 179
... output signal is amplified and then passed through a phase sensitive demodulator to give a direct voltage output . This is fed into a linearizing circuit to produce a voltage proportional to flowrate . The linear output is also averaged ...
... output signal is amplified and then passed through a phase sensitive demodulator to give a direct voltage output . This is fed into a linearizing circuit to produce a voltage proportional to flowrate . The linear output is also averaged ...
Page 195
... output was considered a nuisance as no ( reliable ) digital electronics existed at the time . Most present day vortex meters have no moving part and have a linear , digital output . Thus vortex meters are pure fluid devices and will ...
... output was considered a nuisance as no ( reliable ) digital electronics existed at the time . Most present day vortex meters have no moving part and have a linear , digital output . Thus vortex meters are pure fluid devices and will ...
Contents
FOREWORD | 1 |
SESSION B CALIBRATION TECHNIQUES | 67 |
BLUFF BODIES | 145 |
Copyright | |
2 other sections not shown
Common terms and phrases
0.5 per cent accuracy amplifier authors blockage ratio bluff body Borda inlet boundary layer British Gas calibration curve cavitation circuit curve density detector position determined device differential pressure dilution discharge coefficient diverter downstream drag coefficient drag plate East Kilbride effects electrodes electromagnetic flowmeter equation experimental factor flow measurement flow range flow rate flow velocity fluid frequency GALLON gas flow given injection installed instrument Integrated-pulse-velocity Method ionization meter limits linear m³/s magnetic manometer mass flowrate National Engineering Laboratory obtained operation orifice plates oscillator output paper pipe diameter pipeline possible pressure loss pulsation amplitude pulse radioactive reference Reynolds number sampling sewer shown in Fig signal standard deviation steelyard Strouhal Number swirl Table tank temperature temporal inertia theoretical tracer turbine meter uncertainty University of Surrey upstream valve variations venturi voltage volume volumetric vortex meters vortex shedding weight