A calibration experiment is conducted in which the output of a secondary-standard pressure…

A calibration experiment is conducted in which the output of a secondary-standard pressure transducer having negligible uncertainty is read using a digital voltmeter. The pressure transducer has a range of 0 psi to 10 psi. The digital voltmeter has a resolution of 0.1 V, a stated accuracy of 1 % of full scale, and a range of 0 V to 10 V. The calibration based upon 61 measurements yields the least-squares linear regression relation V (volts) = 0.50 p (psi), with a standard error of the fit, , equal to 0.10 V. Determine the combined standard uncertainty in the voltage at the 95 % confidence level.

442 Measurement and Data Analysis for Engineering and Science Analyzing.

 

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