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**Flow sensors** are devices that help us measure the movement of fluids, like water or air, in various applications. You may have heard of them being referred to as a **flow meter** or **flow indicator**. They work like fluid detectives, detecting the flow rate and volume with certain applications to provide valuable information for controlling, monitoring, and optimising processes.

There are several types, each with its own unique way of working.

- Differential Pressure Flow Sensors: These sensors create a pressure drop in the fluid and measure the resulting difference. They compare the pressure upstream and downstream of an obstruction, calculating the flow rate. They're commonly used in HVAC systems and industrial processes.
- Turbine Flow Sensors: Turbine sensors work like tiny windmills in the fluid stream. As the fluid flows, it spins the turbine, and the speed of rotation is proportional to the flow rate. These sensors are widely used in water utilities, irrigation systems, and even fuel consumption monitoring.
- Electromagnetic Flow Sensors: These sensors employ the power of electromagnetism to measure flow. A magnetic field is created perpendicular to the fluid's direction, and as the conductive fluid flows, it generates a voltage proportional to the velocity. They are unaffected by pressure or temperature changes and find applications in water treatment, chemical processes, and wastewater management.
- Ultrasonic Flow Sensors: These sensors use sound waves to detect the flow. They emit ultrasonic signals through the fluid and measure the time it takes for the waves to travel upstream and downstream. By comparing these times, they calculate the flow rate. These sensors are particularly handy for large pipes and ducts.
- Vortex Flow Sensors: Just as a whirlpool forms when water flows past an obstacle, vortex flow sensors take advantage of the "twist" in the flow. They place a bluff body in the fluid stream, and the frequency of vortices formed is directly related to the flow rate. These sensors excel in measuring gas flow and find applications in HVAC, chemical plants, and even beer brewing!

Check out our super useful [Flow Meter Guide](https://uk.rs-online.com/web/content/discovery/ideas-and-advice/flow-sensors-guide) if you would like to discover more.

Flow sensors are the "current" stars of the measurement world, helping us formulate efficient processes, optimise resource usage, and maintain the perfect balance. With their diverse types and applications, they're certainly not "fluid" when it comes to providing valuable data.



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Flow Sensors | Liquid Flow Meter Sensor | RS

Flow Sensors

RS PRO Radial Flow Turbine Flow Meter for Liquid 30 L/min Max

Baumer PF20S Series FlexFlow Flow & Temperature Measurement Sensor...

WIKA A2G-25 Series Air flow meter Flow Meter for Air

EE741 Series Thermal In-Line Flow Meter Flow Meter for Air

Sensirion SFM3200 Series Digital Flow Meter Flow Meter 250 SLPM Max

Sensirion SLI Series Microfluidic Flow Meter Flow Meter for Liquid...

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Airflow Sensors | RS

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Water Flow Sensors | RS

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Baumer Flow Sensors | RS Components

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Sensors Flow Sensors | RS Components

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Cynergy3 Flow Sensors | RS

<p>Cynergy3 flow sensors are also commonly known as flow indicators, flowmeters, flow gauges and liquid meters. They are devices that are used to measure the amount of liquid, gas or vapour that passes through them, also called flow rates. Typical flow sensors contain a transmitter, transducer, and a primary medium connection device to accurately measure the flow rate of a gas, liquid, or vapour.</p><h2>Types of flow sensors</h2><p>Paddlewheel flow sensors or turbine sensors are the most common flow sensors used. They are small and compact but are capable of performing large capacity measurements.</p><p>Variable area flowmeters or rota flow meters are commonly used for flow measurement of gases and fluids. This type of flow sensor is cost-efficient and simple to use due to its linear output.</p><p>Magnetic-inductive sensors are less commonly used, they are used to detect and measure medium temperature, consumed quantity and volumetric flow quantity.</p><p>At RS Components we provide a wide range of Cynergy3 flow sensors and switches, including digital sensors, sensor switches with and without indicators, paddle flow switches and in-line flow switches.</p><h2>Typical applications</h2><p>Applications of  Cynergy3 flow sensors vary depending on the specifications and model of the flow sensor; therefore it is important to check the requirements of the application against the specification of the flow sensor. Typical applications include:</p><ul><li>Water treatment</li><li>Cooling systems</li><li>Industrial Washing Systems</li><li>Irrigation</li></ul><p>Cynergy3 is at the forefront of RF relay technology and provides high-quality products that are rigorously tested to provide the best performance and accuracy. Quality and innovation are at the centre of Cynergy3. Find a wide range of Cynergy3 flow sensors at RS Components where we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.</p>

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Turck Flow Sensors | RS

<p>Turck Flow Sensors are cutting-edge devices designed to accurately measure fluid flow in various industrial applications. With their advanced technology and reliable performance, Turck Flow Sensors ensure the efficient operation of your systems. These sensors are engineered to provide precise data, enabling you to optimise your processes and enhance productivity. Trust in Turck Flow Sensors for dependable flow measurement solutions that drive efficiency and quality in your operations.</p>

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