Which instrument is used to measure system pressure in the distribution network?

• A. Pressure gauge
• B. Flow meter
• C. Thermometer
• D. Volt meter

Answer: (A)

Measuring system pressure in a water distribution network is done with a pressure gauge. A pressure gauge is designed to read the force exerted by the water inside the pipe and displays it in units like psi or kPa. Placing a gauge on a main, hydrant, or service connection provides a direct reading of how much pressure is present, which is essential for ensuring adequate service levels and detecting issues such as leaks or abnormal drops.

Flow meters, in contrast, measure how much water is moving through the line (flow rate), not the pressure. Thermometers measure temperature, and volt meters measure electrical potential, which are not relevant to assessing hydraulic pressure in the distribution system.