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    Flow Sensor

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    Gear Flow Sensor for Oil, 18-300 L/h, DN8/DN15/DN20

    ● 18-300 L/h ● DN8/DN15/DN20 ● Pulse output ● High-concentration liquids
    $56.18

    Low Air Flow Sensor for Oxygen/Nitrogen, 0~200 sccm

    ● 0~200 sccm ● Oxygen/Nitrogen ● I²C output ● Factory calibrated (STC)
    $84.92

    Vortex Flow Sensor for Water, 0.5~10 L/min, 14~240 L/min

    ● 0.5~10 L/min, 14~240 L/min ● DN6/DN10/DN15 to DN32 ● RS-485/4-20mA/0-10V/PWM ● Water and aqueous solutions
    $91.61

    Clamp-on Ultrasonic Water Flow Sensor, 0~3000 mL/min

    ● 0~3000 mL/min ● 6.35 mm (G1/4'') ● RS-485/ 4-20mA/ NPN ● Water, oil, pharmaceutical solutions
    $498.67

    Mini Mass Air Flow Sensor, -3~3 L/min, 1~5V Output

    ● -3~3 L/min ● ±5% F.S. accuracy ● 1~5V output ● Air (25 °C, 1 atm)
    $98.57

    Stainless Steel Flow Sensor, 5-150 L/min, 10~200 L/min

    ● 5-150 L/min, 10~200 L/min ● DN40/ DN50 ● Stainless steel ● Water (free of impurities)
    $97.18

    Duct Air Flow Sensor, 0~30m/s, RS485/Analog Output

    ● 0~30m/s ● 10-30V DC ● RS485/ Analog output ● Air, nitrogen, oil fume exhaust
    $136.92

    Oval Gear Flow Sensor for Oil, 30-3000 L/h

    ● 30-3000 L/h ● 5–24 VDC ● Copper valve body ● Pulse output
    $95.88

    Stainless Steel Residential Water Flow Sensor, 0.1~10 L/min

    ● 0.1~1 L/min, 0.3-5 L/min, 0.3~10 L/min ● DC 3.5–24 V ● Pulse output ● 304 stainless steel
    $139.71

    3 Inch Turbine Water Flow Sensor, 20~500 L/min

    ● 20~500 L/min ● 3 Inch (DN80) ● Pulse output ● Water (free of impurities)
    $116.32

    Micro Gas Flow Sensor, 0-50/ 0-150/ 0-300 L/min

    ● 0-50/ 0-150/ 0-300 L/min ● O2 flow detection ● RoHS Certification ● Medical electronics
    $216.95

    Brass Hall Effect Water Flow Sensor, 2~50 L/min

    ● 2~50 L/min ● G1'' interface ● Pulse output ● Brass valve body
    $72.21

    Ultrasonic Gas Flow Sensor, 0-10 L/min, 21%~95.6%

    ● 0-10 L/min ● 21%~95.6% ● Ultrasonic detection ● UART (3.3 V) output
    $83.24

    Liquid Flow Sensor, G1/2'', 30-1200 L/h

    ● 30-1200 L/h ● G1/2'' Interface ● 3.5–24 VDC ● High-concentration liquids
    $83.82

    Smart Water Flow Sensor with Display, G1/2'', 5~600 L/H

    ● 5~600 L/H ● G1/2'' interface ● Pulse output ● Most pure, stable liquids
    $108.29

    Irrigation Water Flow Sensor, 10~200 L/min

    ● 10~200 L/min ● DN50 (2 inches) ● Pulse output ● Water (free of impurities)
    $109.66

    Mini Water Flow Sensor for Home, 0.05-1 L/min, 0.3-4 L/min

    ● 0.05-1 L/min, 0.3-4 L/min ● ≤0.8 MPa ● DC 3.5~24V ● 0~80°C operating temp
    $34.97

    CO2 Flow Sensor, 0-30sccm/0-500sccm to 0-1000sccm

    ● 0-30sccm/0-500sccm to 0-1000sccm ● 200Ω output resistance ● 200kPa pressure resistance ● 0 ~ 50°C operating temp
    $149.13

    Water Heater Flow Sensor, 1~30 L/min

    ● 1~30 L/min (±3%) ● G1/2'' interface ● Pulse output ● PPS material
    $61.47

    Paddle Wheel Flow Sensor, 800~1800 mL/min

    ● 800~1800 mL/min ● 1.5 mm pipe diameter ● 3.3–24 V supply voltage ● 2 MPa Max pressure
    $61.76

    Flow sensors are critical components used to detect the flow state and volume of liquids or gases. They are widely applied in industrial automation, environmental monitoring, HVAC systems, water treatment equipment, medical devices, and new energy systems. By continuously monitoring changes in fluid velocity or flow rate, flow sensors enable equipment interlock control, anomaly alarms, and system protection, thereby enhancing overall operational efficiency and safety. Common types based on operating principles include turbine, vortex, ultrasonic, Hall effect, and air mass flow sensors. Different designs suit various media, pressure, and temperature conditions, meeting diverse needs from micro-flow detection to large-scale industrial pipeline monitoring.

    In practical applications, flow sensors extend beyond mere measurement to perform critical functions in equipment protection and process control. For instance, in pump systems, they automatically cut power to prevent dry running when no flow or abnormal flow is detected. Within cooling circulation systems, precise flow feedback ensures optimal heat dissipation efficiency. In agricultural irrigation and water treatment projects, they enable water conservation control and flow statistics. High-quality flow sensors typically feature fast response times, excellent repeatability, strong anti-interference capabilities, and long-term stability. They support analog outputs (e.g., 4-20mA, 0-10V) or digital communication interfaces (e.g., RS485, Modbus), facilitating integration with PLCs or remote monitoring systems.

    As a good sensor online store specializing in sensors and sensing solutions, SUCH.com offers flow sensors in multiple specifications, covering various interface sizes, measurement ranges, and output formats. Whether for standardized applications or customized requirements, flow sensors play an irreplaceable role in modern fluid control systems.