1. n. []

A device for measuring in situ the velocity of fluid flow in a production or injection well based on the torque, or force, produced by the fluid on a stationary impeller. This torque can be related to the effective velocity of flow across the impeller. The torque flowmeter is sometimes used as an alternative to the spinner flowmeter.

See related terms: in situ,  injection well,  production log,  spinner flowmeter