torque-tube flowmeter

torque-tube flowmeter

[′tȯrk ¦tüb ′flō‚mēd·ər]
(engineering)
A liquid-flow measurement device in which a flexible torque tube transmits bellows motion (caused by differential pressure from the liquid flow through the pipe) to the recording pen arm.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.