Water Flow Meters

What are Flow Meters for Water?

Water flow meters are devices used to measure the volume or mass of fluid that passes through a pipe. They are commonly used in water treatment and distribution systems, irrigation, and industrial processes. There are several types of water flow meters, including positive displacement meters, turbine meters, ultrasonic meters, and magnetic meters.

Positive displacement meters work by trapping a fixed volume of fluid and then measuring the number of times the trapped volume is filled and emptied. Turbine meters measure flow by detecting the rotations of a rotor in the flow stream. Ultrasonic meters use sound waves to measure the velocity of fluid flow, while magnetic meters use the interaction between a magnetic field and metal components in the fluid to determine flow rate. Accurate water flow measurement is crucial for water management and helps ensure efficient use of resources whilte reducing waste.

Different pieces of equipment require different flow rates, which is why it’s important to use a water flowmeter to determine the water meter flow rate. Water flow meters can measure hot water, cold water, clean water, dirty water, and slurries. Depending on the type of meter you chose, water flow meter applications can vary. While some meters are designed to measure the flow of oils and lubrications, others are designed to work in pharmaceuticals and wastewater treatment facilities. See our range of industrial water flow meters

Water Flow Sensors

A water flow meter and a water flow sensor are similar in that they both measure the flow rate of water in a pipe. However, there is a difference between the two:

  • A water flow meter measures the total volume of fluid that has passed through a pipe over a certain period of time. It is typically used to determine the amount of fluid that has been used, consumed, or produced.
  • A water flow sensor, on the other hand, measures the velocity of the fluid flow at a specific point in time. It is mainly used to monitor the flow rate in real-time, to detect any changes or irregularities in the flow, and to control or regulate the flow as needed.

Advantages of Ultrasonic Water Meters

  • Non-invasive measurement: Ultrasonic meters do not have any moving parts that come in contact with the water, making them ideal for measuring the flow of clean, dirty, or abrasive liquids.
  • High accuracy: Ultrasonic meters can provide accurate flow measurement even in low-flow conditions, which is critical in many water management applications.
  • Real-time monitoring: Ultrasonic meters can provide real-time flow measurements, which is important for detecting changes or irregularities in the flow and making adjustments as needed.
  • Wide range of flow rates: Ultrasonic meters can measure a wide range of flow rates, making them suitable for different types of applications.
  • Low maintenance: Ultrasonic meters do not have any moving parts, which makes them more reliable and requires less maintenance compared to other types of flow meters.
  • Easy installation: Ultrasonic meters are easy to install, as they do not require any cutting or modifying of the pipe, which can reduce the time and cost of installation.

The difference between Water Meters and Flow Meters

Though the terms are often quite interchangeable, whilst all water meters are flow meters, not all flow meters are water meters.

Water meters measure the amount of water used, while flow meters measure the rate of flow of a liquid or gas. Water meters measure the volume of water used over a certain amount of time, while flow meters measure the speed at which a liquid or gas flows through a pipe.

What is a digital water flow meter?

A digital water flow meter is a device used to measure the rate of water flow in a pipe. It typically consists of a sensor, a display, and a processor. The sensor measures the flow rate, the processor calculates the total volume of water passed, and the display provides a digital readout of the data. Digital water flow meters provide a reliable and convenient way to measure and monitor the flow rate of water in a variety of applications, with high accuracy and precision.

See Our Full Range of Ultrasonic Water Meters



Golden Jubilee Hospital

The Golden Jubilee Hospital in Clydebank, Scotland used a Micronics Portaflow 330 flowmeter to measure the water flow through hot and cold water pipes throughout the estate. Andrew Gallagher, NHS Scotland’s Estates Officer discovered the Portaflow 330 through a simple web search and has been very satisfied with his discovery.

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“I initially chose it because it meant that there was no need to cut into pipes – vital in a busy hospital – which, in turn meant that installation costs were minimal because the system did not need to be drained down or pipes cut into. We have found the accuracy of the data delivered to be excellent.”

Andrew Gallagher

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