Which type of fire line meter measures all of the water going through the fire line during an event?

The correct option, large turbo meters, is particularly suitable for measuring all the water that flows through a fire line during an event. These meters are designed to handle large volumes of water and are commonly utilized in scenarios where high flow rates are expected, such as firefighting activities. Large turbo meters typically operate on the principle of fluid dynamics, where the flow of water causes a turbine to spin, and the rotational speed of the turbine correlates with the volume of water passing through the meter.

The efficiency and accuracy of large turbo meters in high-flow situations make them an ideal choice for fire lines, ensuring that every gallon used during an emergency response is accounted for. This kind of detailed measurement is crucial for fire departments to assess water usage and for municipalities to track water consumption accurately during firefighting efforts.

Understanding the role and functionality of large turbo meters highlights their importance in managing water resources effectively, especially in critical situations. Other types of meters, like proportional metering, detector meters, and parallel type compounds, serve different purposes or have limitations that make them less suitable for this specific application.