Gas flow meters can be roughly divided into volume flow meters and mass flow meters. Volume flow meters include area flow meters, positive displacement flow meters, and differential pressure flow...
Recent advances in flow sensing have resulted in more accurate, durable, and economical meters. Increasingly important is the ability to interface meters with a computer for instantaneous flow readout...
Most flow measurements are made by meters that are installed in-line such that
all of the fluid passes through the meter body. Insertion (sampling) flow measurement
is a different technique because...
Differential pressure meters (DP) include orifice plates, venturi tubes, flow nozzles, cone types, Pitot tubes, target meters, elbow tap meters and rotameters. The basic operating principle of...
Ultrasonic meters include Doppler Effect meters and time of flight meters. Doppler meters measure the frequency shifts caused by liquid flow. The frequency shift is proportional to the liquid's...