The pressure testing tool used to verify gas pressure to the manifold is a

The pressure testing tool used to verify gas pressure to the manifold is a

• A. Manometer
• B. Voltmeter
• C. Multimeter
• D. Hygrometer

Answer: (A)

Measuring gas pressure in a line requires a device that directly responds to pressure without relying on electrical signals. A manometer does this by using a column of liquid whose height difference between two legs moves in response to the gas pressure, giving a direct reading in units like inches of water column. This makes it the right tool for verifying the pressure going to the manifold, providing a straightforward, mechanical measurement of what the gas line is supplying. Voltmeter and multimeter are intended for electrical measurements, not pressure, and a hygrometer measures humidity, which is unrelated to gas pressure.

Measuring gas pressure in a line requires a device that directly responds to pressure without relying on electrical signals. A manometer does this by using a column of liquid whose height difference between two legs moves in response to the gas pressure, giving a direct reading in units like inches of water column. This makes it the right tool for verifying the pressure going to the manifold, providing a straightforward, mechanical measurement of what the gas line is supplying.

Voltmeter and multimeter are intended for electrical measurements, not pressure, and a hygrometer measures humidity, which is unrelated to gas pressure.