What device is specifically used to measure flow in pools?

The device specifically used to measure flow in pools is a flow meter. A flow meter is designed to quantify the rate at which water flows through a system, providing critical data about the circulation in the pool. This helps in ensuring the filtration system is functioning properly and aids in maintaining water quality.

Flow meters can vary in design and technology, but they all serve the primary purpose of measuring the volume of water passing through them over a specific period. This information is vital for pool operators to assess the effectiveness of water circulation, maintain proper chemical balance, and ensure that the pool is compliant with health and safety regulations.

While other devices, such as pressure gauges, can provide indirect information about flow by measuring pressure changes in the system, they do not directly measure flow rates. A pH meter is focused on measuring acidity or alkalinity levels in the water, and a water level sensor monitors the water height but does not provide flow measurements. Thus, the flow meter is the appropriate choice for directly assessing water flow in swimming pools.