G2 Gas Fitter Practice Exam

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What device is used to measure gas pressure?

Manometer
Calorimeter
Bourdon gauge
Volt meter

The correct answer is: Manometer

A manometer is the correct device used to measure gas pressure because it is specifically designed to measure the pressure of gases in various applications, including gas fitting. It operates on the principle of balancing a column of liquid against the pressure being measured, providing a direct indication of the pressure through the height of the liquid column. This measurement is essential for ensuring safe operation of gas systems and compliance with regulations. In contrast, a calorimeter measures heat energy changes and is not applicable to gas pressure measurement. A Bourdon gauge is also used for measuring pressure, but it is typically utilized for fluid pressures, particularly liquids, rather than specifically for gases as a manometer does. Lastly, a voltmeter is used to measure electrical voltage and has no relevance in gas pressure measurements. Each of these devices serves distinct purposes, which is why the manometer is the ideal choice for measuring gas pressure accurately.