What is a common tool used to measure low pressure in gas lines?

A sloped tube manometer is a common tool used to measure low pressure in gas lines due to its design, which allows for high sensitivity in detecting small changes in pressure. This device utilizes a liquid-filled tube that slopes at an angle, with pressure readings taken from the height differential of the liquid columns. The slope provides a greater sensitivity compared to a vertical tube manometer or other pressure measuring devices, making it particularly useful for low-pressure applications typical in gas line measurements.

The functionality of a sloped tube manometer in monitoring gas lines allows technicians to ensure that systems operate within safe pressure parameters, which is crucial for safety and compliance with regulatory standards. The clarity and simplicity of interpreting measurements from a sloped tube also contribute to its broad use among professionals in the field.

Other options may have specific uses; however, they may not provide the same level of sensitivity or direct applicability for low-pressure gas applications as the sloped tube manometer.