A hot wire anemometer was calibrated in an air jet at ambient temperature TO = 26.3 °C and a wire temperature T = 140.0 °C. The anemometer is to be used to measure a flow with a stagnation air temperature of Ta = 31.5 °C. Calculate a correction factor Vc/Vm to minimise the error due to the change in temperature, where Vm is the measured output voltage at test and V is the corrected voltage for which the original calibration should be applied. Provide your answer to three decimal places.

A hot wire anemometer was calibrated in an air jet at ambient temperature TO = 26.3 °C and a wire temperature T = 140.0 °C. The anemometer is to be used to measure a flow with a stagnation air temperature of Ta = 31.5 °C. Calculate a correction factor Vc/Vm to minimise the error due to the change in temperature, where Vm is the measured output voltage at test and V is the corrected voltage for which the original calibration should be applied. Provide your answer to three decimal places.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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