The efficiency of the orifice flowmeter can be as low as what percent?

The efficiency of an orifice flowmeter can be as low as 65%. This is primarily due to several factors inherent in its design and operation. Orifice flowmeters measure flow by creating a pressure differential as fluid passes through a sharp-edged orifice. This design leads to energy losses primarily due to turbulence and friction as the fluid accelerates and then decelerates through the orifice.

The 65% efficiency indicates that only a portion of the input energy is converted into useful measurement, with the remainder lost to these inefficiencies. Understanding this efficiency is crucial in applications where precise flow measurements are necessary, as it impacts the accuracy and reliability of the readings obtained from the flowmeter. In practical applications, this value can guide engineers and technicians in selecting appropriate flow measuring devices based on the performance characteristics required for a given system.