FLUID RESISTANCE MEASURING INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To provide a fluid resistance measuring instrument that can measure fluid resistances by using a device which does not cause temperature drifts like a strain gauge and can be installed easily. SOLUTION: When measuring the resistance received by a measuring flat plate disposed on a fluid flow from the fluid flow, FBG sensors A and B are fixed between the measuring flat plate and fixed flat plate by suspending the sensors A and B at an interval with a stainless wire and an FBG sensor C is provided on the fixed flat plate. In addition, the FBG sensors A, B, and C are connected in series through an optical fiber. The sensors A and B measure the force caused by the resistance received by the fixed flat plate from the fluid flow as distortion and the sensor C measures the temperature of the measuring flat plate. The fluid resistance measuring instrument measures accurate fluid resistances by correcting the distortion signals generated from the sensors A and B based on the temperature of the measuring flat plate measured by means of the sensor C. COPYRIGHT: (C)2004,JPO&NCIPI