Which type of flow-measuring device uses struts to create a partial obstruction to gas flow,causing whirlpools to be produced when gas flows through it?
A) Monel pneumotachograph
B) Ceramic pneumotachograph
C) Vortex ultrasonic flowmeter
D) Variable-orifice pneumotachograph

Question

Quizplus · Accepted Answer

The vortex ultrasonic flowmeter uses struts to create a partial obstruction to gas flow.As gases flow past these struts,whirlpools (or vortices)are produced.The frequency at which these whirlpools are produced is related to gas flow through the struts.

Which Type of Flow-Measuring Device Uses Struts to Create a Partial