axial-type mass flowmeter

axial-type mass flowmeter

[′ak·sē·əl ¦tīp ′mas ′flō‚med·ər]
(engineering)
An instrument in which fluid in a pipe is made to rotate at a constant speed by a motor-driven impeller, and the torque required by a second, stationary impeller to straighten the flow again is a direct measurement of mass flow.