Flow Sensors

A flow sensor is a device that measures the rate or volume of a fluid, such as water, air, or gas, moving through a system. Depending on the sensing technology, flow measurement may be based on changes in pressure, velocity, electromagnetic properties, sound-wave transit time, or other physical characteristics of the flowing medium. Accurate flow measurement supports monitoring, control, and process optimization across industrial and utility applications, where flow-sensor data is often integrated into process control and automation systems.

RS Philippines supplies an extensive range of flow sensors and digital flow meters for liquid and gas measurement, sourced from leading brands such as ifm electronic, Endress+Hauser, SMC, and others.

Types of Flow Sensors

RS Philippines stocks several types of flow sensors and flow meters, each using a different physical principle for flow measurement. The right choice depends on the fluid being measured, pipe size, installation requirements, operating conditions, and the level of measurement accuracy required. Flow sensing often sits alongside other process measurement and control technologies, including pressure sensors, level sensors, and flow controllers.

Differential Pressure Flow Sensors

These sensors create a pressure drop across an obstruction in the fluid path and calculate flow rate from the resulting pressure difference between upstream and downstream measurement points. They are widely used in HVAC systems and industrial process applications.

Turbine Flow Sensors

A turbine flow sensor works like a small windmill in the fluid stream: the fluid spins the turbine, and rotation speed is proportional to flow rate. These sensors are commonly used in water utilities, irrigation systems, and fuel consumption monitoring.

Electromagnetic Flow Sensors

These flow rate sensors use electromagnetism to measure the flow of conductive liquids. A magnetic field is generated across the pipe, and the conductive fluid passing through it produces a voltage proportional to its velocity. Electromagnetic flow sensors contain no moving parts in the flow path and are widely used in water treatment, chemical processing, and wastewater management applications.

Ultrasonic Flow Sensors

Ultrasonic flow sensors send sound waves through the fluid and measure the time they take to travel upstream and downstream, calculating flow rate from the difference. They work well in large pipes and ducts where introducing a physical obstruction into the flow path isn't practical.

Vortex Flow Sensors

A vortex flow sensor places a bluff body in the fluid stream and measures the frequency of the vortices that form behind it, which is directly related to flow rate. These flow rate sensors are commonly used for measuring liquids, gases, and steam in HVAC systems, utilities, and industrial process applications.

Industrial Applications of Flow Sensors

Flow sensors are used across a wide range of industrial and utility settings in the Philippines, wherever a process depends on knowing how much liquid or gas is moving through a system. The most suitable industrial flow sensor technology depends on the fluid being measured, operating conditions, installation constraints, and the level of accuracy required.

• Water Treatment & Utilities: Turbine and electromagnetic flow sensors help water utilities measure consumption, monitor distribution systems, support leak-detection programs, and maintain reliable operation of water and wastewater networks.
• Oil, Gas & Petrochemical: Ultrasonic flow-measurement sensors and other industrial flow-measurement technologies monitor fluid movement in pipelines and process systems, supporting process control, operational efficiency, and leak-detection strategies.
• Food & Beverage Processing: Electromagnetic and differential pressure flow sensors support precise ingredient measurement in food and beverage production, helping maintain consistent product quality.
• HVAC & Building Services: Differential pressure and vortex flow sensors monitor airflow in ducts and fluid circulation in heating and cooling systems, supporting efficient building operation and environmental control.
• Pharmaceutical Manufacturing: Flow rate sensors help control process fluids, purified-water systems, and dosing applications where accurate and repeatable flow measurement is important for process consistency and regulatory compliance.

Shop Flow Sensors at RS Philippines

RS is a trusted flow sensor supplier in the Philippines, carrying genuine stock from leading brands including ifm electronic, Endress+Hauser, and SMC, all backed by full manufacturer warranty, so process and engineering teams can specify with confidence from a single distributor. Flow sensor price depends on the sensor type, accuracy class, materials, and order quantity, with volume orders typically qualifying for better pricing; refer to the product listing above for current flow sensor price in the Philippines. Orders can be placed online or by phone, with bulk and project quantities accommodated at special volume pricing on request.

Beyond flow, RS also stocks the wider range of sensors used in process and automation systems, including RTD sensors, vibration sensors, and proximity sensors, making RS a one-stop source for a complete monitoring setup. For flow-related work in water and utility applications, see our guide to sustainable water management.

RS ships flow sensors across the Philippines. We offer free delivery on qualifying online orders exceeding PHP 5,000 (ex VAT). For smaller orders under PHP 5,000 (ex VAT), a standard PHP 500 small order handling charge applies. Take advantage of same-day dispatch from our global warehouse for orders placed Monday through Friday before 4:30 PM. As delivery fees and times are subject to change, please refer to our delivery page for up-to-date information.