Describe the use of pressure gauges in gas systems.

Pressure gauges play a critical role in gas systems by providing essential data regarding the pressure within pipelines. They allow operators to monitor real-time pressure levels, ensuring that the system operates within safe and optimal parameters. By regulating pressure, these gauges help prevent hazardous situations such as overpressure, which can lead to leaks or system failures.

Additionally, monitoring pressure is crucial for maintaining the efficiency of gas flow, as it directly affects the delivery of gas to customers. By maintaining the appropriate pressure levels, operators can ensure reliable service and the safety of the entire gas distribution system.

The other options do not accurately reflect the primary function of pressure gauges in gas systems. Increasing pipeline production and indicating the age of the pipeline are not directly related to the use of pressure gauges. Measuring temperature fluctuations falls outside the typical functionality of pressure gauges, which are specifically designed to assess pressure rather than temperature.