Which device provides flow rate measurement and total volume information?

Which device provides flow rate measurement and total volume information?

• A. Flow meter
• B. Pressure gauge
• C. Flow switch
• D. Thermostatic mixing valve

Answer: (A)

Measuring how much fluid passes and tracking the total amount over time is what a flow meter does. A flow meter quantifies flow rate, typically given as volume per time (like gallons per minute or liters per second), and many models can also accumulate the total volume that has flowed, providing a running total that’s useful for tracking usage or consumption. In contrast, a pressure gauge only shows pressure, not flow; a flow switch detects whether flow is present or not (not how much or how fast); and a thermostatic mixing valve blends hot and cold water to reach a set temperature without measuring flow.

Measuring how much fluid passes and tracking the total amount over time is what a flow meter does. A flow meter quantifies flow rate, typically given as volume per time (like gallons per minute or liters per second), and many models can also accumulate the total volume that has flowed, providing a running total that’s useful for tracking usage or consumption.

In contrast, a pressure gauge only shows pressure, not flow; a flow switch detects whether flow is present or not (not how much or how fast); and a thermostatic mixing valve blends hot and cold water to reach a set temperature without measuring flow.