Which of the following devices is bidirectional?
A) Turbine flowmeter
B) Screen pneumotachograph
C) Vortex ultrasonic flowmeter
D) Variable-orifice pneumotachograph

Question

Quizplus · Accepted Answer

The variable-orifice pneumotachograph is a disposable,bidirectional,flow-measuring device that uses a flexible obstruction with a variable area for measuring flow as a function of the pressure differential generated by the obstruction.Turbine flowmeters,thermal anemometers,and vortex ultrasonic flowmeters are all unidirectional.

Which of the Following Devices Is Bidirectional