Which of the following is true regarding the operation of a steam gauge with a pigtail?

A steam gauge with a pigtail is designed to enhance the measurement accuracy and longevity of the gauge. The pigtail, which is a coiled tube, serves to trap a small volume of water within it. This design helps to absorb the shock and pulsation of the steam pressure, preventing extreme temperatures and pressures from directly affecting the gauge mechanism. By protecting the gauge from these potential damaging conditions, the pigtail ensures that the gauge remains functional and provides accurate readings over time.

Understanding this feature is crucial in maintaining the safety and reliability of steam systems. The ability to protect sensitive instrumentation directly contributes to the overall efficiency and safety of the steam operation.