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    Flow Sensors

    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 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.

    806 產品顯示為 Flow Sensors

    HK$19,170.60
    Endress+Hauser
    Water
    Electromagnetic Flowmeter
    0.5 m³/h
    263000 m³/h
    24 V dc, 100 → 230 V ac
    -
    -
    -
    -
    -
    -
    -
    -
    Proline Promag W 10
    -
    -
    -
    HK$2,521.20
    Gems Sensors
    Liquid
    Piston
    -
    0.1 gal/min
    -
    1/4 in
    1/4 NPT Female
    69bar
    Brass
    -
    -
    -29°C
    +148.9°C
    FS-930
    -
    -
    -
    HK$3,298.48
    Gems Sensors
    Liquid
    RotorFlow Electronic
    5 gal/min
    300 gal/min
    24 V dc
    3/4 in
    3/4 NPT Female
    13.8bar
    Brass
    -
    +21°C
    -29°C
    +100°C
    RFS
    -
    -
    20 mA @ 24 V dc (No Load), 35 mA @ 24 V dc (Load)
    • RS庫存編號 395-7000
    • 製造零件編號 166702-A
    HK$516.40
    Gems Sensors
    Gas
    Piston
    -
    74 L/min
    120 → 240 V ac/dc
    1/4 in
    1/4 BSP
    10bar
    Noryl
    -
    +100°C
    -
    +100°C
    FS-3
    -
    -
    -
    • RS庫存編號 395-6978
    • 製造零件編號 166703
    HK$455.70
    Gems Sensors
    Liquid
    Piston
    -
    2 L/min
    120 → 240 V ac/dc
    1/4 in
    1/4 BSP
    10bar
    Noryl
    -
    +100°C
    -
    +100°C
    FS-3
    -
    -
    -
    • RS庫存編號 395-7038
    • 製造零件編號 166704-A
    HK$455.60
    Gems Sensors
    Gas
    Piston
    -
    340 L/min
    120 → 240 V ac/dc
    1/4 in
    1/4 BSP
    10bar
    Noryl
    -
    +100°C
    -
    +100°C
    FS-3
    -
    -
    -
    HK$443.70
    Gems Sensors
    Liquid
    Piston
    -
    0.5 gal/min
    200 V
    1/4 in
    1/4 Quick Disconnect Male
    8.6bar
    Glass Reinforced PP
    -18 °C
    +100°C
    -18°C
    +100°C
    FS-380P
    -
    -
    -
    HK$1,399.00
    Gems Sensors
    Liquid
    RotorFlow Electronic
    2 L/min
    20 L/min
    4.5 → 24 V dc
    1/4 in
    1/4 BSP Female
    6.9bar
    Polypropylene
    -29 °C
    +82°C
    -29°C
    +82°C
    RFO
    -
    -
    -
    HK$2,550.78
    Gems Sensors
    Liquid
    RotorFlow Electronic
    15 L/min
    75 L/min
    24 V dc
    1/2 in
    1/2 BSP Female
    6.9bar
    Polypropylene
    -29 °C
    +82°C
    -29°C
    +82°C
    RFS
    -
    -
    -
    HK$3,133.70
    BROOKS
    Gas
    Variable Area
    400 L/min
    4000 L/min
    -
    1 in
    1 NPT Female
    6.89bar
    Acrylic
    -
    +65°C
    -
    +65°C
    FR5000
    -
    -
    -
    HK$2,852.50
    Gems Sensors
    Liquid
    RotorFlow Electronic
    2 L/min
    20 L/min
    24 V dc
    -
    1/4 BSP Female
    14bar
    Brass
    -29 °C
    +100°C
    -29°C
    +100°C
    RFS
    -
    -
    -
    • RS庫存編號 175-2138
    • 製造零件編號 SFAB-600U-HQ10-2SA-M12
    HK$5,877.00
    Festo
    -
    -
    6 l/min
    600 L/min
    0 → 10 V
    -
    Plugs
    145psi
    PA
    0 °C
    +50°C
    0°C
    +50°C
    SFAB
    -
    -
    100 mA
    • RS庫存編號 196-4457
    • 製造零件編號 IFW510-F03-00-Q
    HK$1,812.48
    SMC
    -
    Flow Switch
    1 L/min
    10 L/min
    -
    -
    G3/8 Female
    0.6MPa
    BC6
    -
    -
    +5°C
    +60°C
    IFW5
    -
    -
    -
    • RS庫存編號 175-2141
    • 製造零件編號 SFAB-1000U-HQ10-2SV-M12
    HK$6,127.00
    Festo
    -
    -
    -
    -
    10 V
    -
    -
    -
    -
    -
    -
    0°C
    +50°C
    -
    -
    -
    -
    • RS庫存編號 237-3652
    • 製造零件編號 PF3W740S-F06-BN-M
    HK$6,631.23
    SMC
    -
    Integrated Display
    5 l/min
    40 L/min
    12 → 24 V dc
    -
    -
    -
    -
    -
    -
    -
    -
    PF3W
    -
    -
    -
    HK$3,008.81
    SMC
    Air
    Digital Flow Switch For Air
    10 l/min
    210 L/min
    12 → 24 V dc
    -
    -
    -
    -
    -
    -
    -
    -
    PF2A3
    -
    -
    -
    HK$2,614.69
    SMC
    Dry Air, Gas
    Integrated Display
    2 l/min
    100 L/min
    24 V dc
    -
    -
    -
    -
    -
    -
    -
    -
    PFM7
    -
    -
    -
    • RS庫存編號 175-2134
    • 製造零件編號 SFAB-50U-HQ6-2SA-M12
    HK$5,186.00
    Festo
    -
    -
    -
    -
    0 → 10 V
    -
    -
    -
    -
    -
    -
    0°C
    +50°C
    -
    -
    -
    -
    • RS庫存編號 204-3924
    • 製造零件編號 D6FP0010A1
    HK$627.40
    Omron
    Air
    Air
    1 l/min
    1 L/min
    10 V dc
    -
    -
    -
    -
    -
    -
    -
    -
    D6F
    -
    -
    -
    HK$2,454.62
    SMC
    Dry Air, Gas
    Integrated Display
    1 l/min
    50 L/min
    24 V dc
    -
    -
    -
    -
    -
    -
    -
    -
    PFM7
    -
    -
    -
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