Level Sensors | Water & Oil Level Detection Sensors - RS HK
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    Level Sensors

    Level sensors, also known as liquid level probes, are devices that monitor and measure fluid levels in containers, tanks, or silos. They generate an output electrical signal at predetermined levels to control the opening or closing of valves.

    Types of Level Sensors

    Level sensors are selected based on factors such as the substance being measured, the operating environment, mounting requirements, and the specific needs of the application. These factors dictate the measurement technique employed, including capacitive, guided wave radar, or hydrostatic methods. Here’s a breakdown of the most common types of level sensors:

    Capacitive level switches

    Capacitive level switches operate without contact, utilising a sensing field to detect water levels. These switches are positioned to provide basic full or empty indications and are effective even with significant residue buildup.

    Vibrating Level Probes

    Vibrating level probes employ a continuously vibrating rod or fork to detect level changes. When these probes make contact with a medium, their vibration alters, triggering a switch. This technology is commonly used for overfill protection and low-level indication in both liquids and granular or powdery solids.

    Conductive Level Switches

    Conductive level switches use stainless steel probes that make electrical contact to measure specific liquid levels. They work alongside level control relays to monitor and adjust the position of each probe, suitable for various applications from ponds to pharmaceutical vessels.

    Ultrasonic Level Switches

    Ultrasonic level sensors emit sound pulses that reflect off the liquid surface. The sensor calculates the time it takes for these pulses to return, accurately determining the liquid's distance and thus its level. Factors like turbulence, pressure, moisture, and temperature can affect the readings of ultrasonic sensors.

    Level Sensors Applications

    Level sensors are crucial in numerous industries due to their ability to monitor and control liquid levels accurately, impacting various processes from manufacturing to automotive functionality. Here's how they are applied across different sectors:

    • Manufacturing – Level sensors ensure accurate ingredient balances and safe storage in chemical and food processing industries.
    • Automotive Industry – Level detection sensors monitor crucial fluid levels in vehicles, such as brake fluid and engine oil, preventing failures and damage.
    • Water Treatment – These level detectors manage treatment volumes and effectiveness in water tanks as well as treatment facilities.
    • Pharmaceutical Processes – In pharmaceutical production, level sensors maintain strict liquid levels for compliance and batch quality.
    • Power Generating Plants – Power plants use level meters to monitor liquids like cooling water and lubricants, ensuring machinery operates smoothly.

    Browse the broad range of level sensors RS Group has to offer and order today for next day delivery.

    How to Choose the Right Level Sensor for Your Needs

    Selecting the right level sensor requires careful consideration of various factors to ensure it meets specific application needs. Start by defining the primary purpose of the measurement, such as visual indication, alarm initiation, or continuous monitoring.

    Consider the characteristics of the service medium, including its type (liquid, slurry, granular), corrosiveness, and physical properties like density and viscosity. The selection of material for the sensor's wetted parts should align with the chemical compatibility and physical demands of the medium. Additionally, assess the operating conditions such as temperature, pressure, and whether the installation environment is hazardous.

    The mounting orientation of the sensor and the required accuracy are also crucial. As a reputable water level sensor supplier, RS offers a broad range of quality level sensors from leading brands. These sensors are designed to integrate seamlessly with modern digital control systems and meet rigorous industrial standards, ensuring reliability and accuracy in any application.

    How to Order Level Sensors from RS?

    Ordering level sensors from RS is straightforward and ensures access to high-quality solutions tailored to a wide range of industrial, commercial, and project needs. Our catalogue features an extensive selection from trusted brands including RS PRO , Siemens, Sick, and Gems Sensors, catering to diverse requirements. You can conveniently place your order online for efficient delivery, or contact us by phone for assistance with bulk orders. RS guarantees a smooth purchasing process, providing you with reliable level sensors that meet stringent quality standards. Sick, and Gems Sensors, catering to diverse requirements. You can conveniently place your order online for efficient delivery, or contact us by phone for assistance with bulk orders. RS guarantees a smooth purchasing process, providing you with reliable level sensors that meet stringent quality standards.

    How Delivery Works at RS Hong Kong

    At RS Hong Kong, we ensure that your orders for level sensors are processed quickly and efficiently. Whether you need standard of expedited shipping, you can be sure that your orders will arrive on-time when you need them. For additional information on our delivery services, please visit our delivery information page.

    1343 Products showing for Level Sensors

    Flowline
    Radar
    Flange Mount
    Modbus
    PVDF (pigmented polyvinylidene fluoride)
    10
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    -
    -
    -
    -
    -
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    LR81
    Delta-Mobrey
    Liquid Level Switch
    Side Mount
    SPST
    Aluminium Bronze
    -
    -
    -
    +210°C
    -
    -
    -
    2 A dc, 3 A ac
    18bar
    -
    Non Asbestos Sheet
    -
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    Vega
    Vibrating Rod
    -
    Relay
    -
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    -
    -
    -
    -
    -
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    20 mA
    -
    -
    -
    -
    -
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    VEGASON 61
    Endress+Hauser
    Capacitance
    Wall Mount
    PNP
    PBT-FR
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ATEX
    Minicap FTC262
    Rosemount
    Fork Level Switch
    Side or Top Mount
    -
    Aluminium
    -
    -
    -40°C
    +180°C
    -
    -
    -
    500 mA
    100bar
    -
    -
    -
    -
    -
    2130
    SSt Sensing Limited
    Liquid Level Switch
    Threaded Mount
    PNP
    Polysulfone
    -
    -
    -40°C
    +125°C
    -
    30V
    -
    7.5 mA
    7bar
    -
    -
    -
    -
    -
    OPTOMAX LLC210
    Endress+Hauser
    Vibronic
    Threaded Mount
    PNP
    PTB-FR
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ATEX, IECEx
    Soliphant T FTM21
    Carlo Gavazzi
    Level Probe
    Threaded
    -
    Stainless Steel
    1m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    VT
    Carlo Gavazzi
    Level Sensor
    Threaded
    PNP
    Metal
    2m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    VP
    Vega
    Impedance Switch
    1" G/BSP Thread
    PNP
    Stainless Steel
    -
    IO-LINK
    -40°C
    +115°C
    -
    35V
    -
    -
    25bar
    -
    Klingersil
    -
    Solids
    -
    VEGAPOINT 31
    Flowline
    Ultrasonic Level Transmitter
    Vertical
    -
    PC
    -
    -
    -40°C
    +71°C
    -
    28V
    -
    20 mA
    2bar
    -
    FKM
    -
    -
    -
    EchoSonic
    Siemens
    Ultrasonic
    -
    -
    -
    10m
    -
    -20°C
    +65°C
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ATEX
    XRS-5
    Endress+Hauser
    Vibronic
    Flush Mount
    PNP
    Stainless Steel 316L
    5m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Liquiphant FTL33
    Carlo Gavazzi
    Level Sensor
    Threaded
    PNP
    Plastic
    2m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
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    VP
    SICK
    TDR Level Sensor
    -
    NPN, PNP
    Plastic PBT
    25mm
    -
    -20°C
    +60°C
    -
    12 → 30V
    M12
    -
    10bar
    Probe
    -
    -
    -
    -
    LFP0025
    Siemens
    Rotation Paddle Switch
    Threaded
    SPDT
    Epoxy Coated Aluminium
    -
    -
    -
    80°C
    230V
    -
    G 1 1/2
    -
    0.5bar
    -
    -
    -
    -
    -
    SITRANS LPS
    Endress+Hauser
    Vibronic Point Level Detection
    DIN Rail
    -
    Polycarbonate, Polypropylene
    1000m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ATEX
    Nivotester FTL325N
    Endress+Hauser
    Capacitance Point Level Switch
    DIN Rail
    -
    Polycarbonate, Polypropylene
    1000m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ATEX
    Nivotester FTC325
    SICK
    Ultrasonic Level Sensor
    -
    PNP
    Stainless Steel
    -
    -
    -25°C
    +70°C
    -
    9 → 30V
    M12
    -
    6bar
    -
    -
    -
    -
    -
    UP56
    Endress+Hauser
    Capacitance
    Flush Mount
    PNP
    Stainless Steel 316L
    -
    -
    -
    -
    -
    -
    -
    -
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    -
    -
    -
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    Liquipoint FTW33
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