Orifice meters are used to measure the flow rate of a

Chapter , Problem 7.3

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QUESTION:

Orifice meters are used to measure the flow rate of a fluid. In an experiment, the flow coefficient K of an orifice is found by collecting and weighing water flowing through the orifice during a certain interval while the orifice is under a constant head. K is calculated from the following formula: K = M tAp(2gAh)tl2 The values of the parameters have been determined to be as follows, with 95 % confidence: Mass TlDle Density Diameter Head M = 865.00 0.05 Ibm t = 600.0 1 s p = 62.36 0.1 % Ibm/ttl d = 0.500 0.001 in. (A is area) Ah = 12.02 0.01 ft Find the value of K, its uncertainty (with 95% confidence), and the maximum possible error.

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QUESTION:

Orifice meters are used to measure the flow rate of a fluid. In an experiment, the flow coefficient K of an orifice is found by collecting and weighing water flowing through the orifice during a certain interval while the orifice is under a constant head. K is calculated from the following formula: K = M tAp(2gAh)tl2 The values of the parameters have been determined to be as follows, with 95 % confidence: Mass TlDle Density Diameter Head M = 865.00 0.05 Ibm t = 600.0 1 s p = 62.36 0.1 % Ibm/ttl d = 0.500 0.001 in. (A is area) Ah = 12.02 0.01 ft Find the value of K, its uncertainty (with 95% confidence), and the maximum possible error.

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A large number of engineering measurements and test are categorized as the single measurement. These include practically all measurement experiments used for process monitoring and control such as measurement of the speed of the car, the exit temperature of the boiler, blood pressure etc.

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