Gas Fitter Practice Test

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Which device is typically used to measure the pressure of gas in a piping system?

Barometer
Pressure gauge
Manometer
Thermometer

The correct answer is: Pressure gauge

A pressure gauge is a device specifically designed to measure the pressure of gas within a piping system. It provides a direct reading of the pressure, which is crucial information for ensuring that the gas is delivered safely and effectively without exceeding the system's ratings. Pressure gauges can be analog or digital, and they often feature a dial or digital display that allows for quick and easy monitoring of gas pressure levels. While a manometer can also measure gas pressure, it primarily provides a comparative measurement (usually in relation to atmospheric pressure) and is often used in more specialized applications. A barometer measures atmospheric pressure, which is not relevant for measurements within a gas piping system. A thermometer measures temperature, which does not provide direct information about pressure levels. Thus, the pressure gauge is the most appropriate tool for this context.