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An engineer sets the pressure in a supply tank using a
Chapter 9, Problem 9.10(choose chapter or problem)
An engineer sets the pressure in a supply tank using a very accurate manometer as a guide and then reads the output of a 20-psig pressure gauge attached to the tank as 10.2 psig. Sometime later she repeats the procedure and obtains values of 10.4 and 10.3 psig. Discuss the following gauge properties:
(a) Precision
(b) Accuracy
(c) Resolution
(d) Repeatability
Questions & Answers
QUESTION:
An engineer sets the pressure in a supply tank using a very accurate manometer as a guide and then reads the output of a 20-psig pressure gauge attached to the tank as 10.2 psig. Sometime later she repeats the procedure and obtains values of 10.4 and 10.3 psig. Discuss the following gauge properties:
(a) Precision
(b) Accuracy
(c) Resolution
(d) Repeatability
ANSWER:Step 1 of 5
An engineer sets the value of the pressure in a supply using the very accurate manometer.
Then, the actual pressure output is \(20\) psig.
The output of the pressure gauge reads the following values of manometer after repeatation of the procedure as \(10.2\) psig, \(10.4\) psig, and \(10.3\) .
The difference between the reading \(10.2\) psig and \(10.3\) psig.
\(10.3 - 10.2 = 0.1\)
The difference between the reading \(10.4\) psig and \(10.3\) psig .
\(10.4 - 10.3 = 0.1\)
Hence, the closeness of the reading is equal to the difference of the readings.
The closeness of the readings is \(0.1\) psig .