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

    RS PRO
    Float
    External
    NO/NC
    Polyphenylene Sulphide
    -
    -
    -10°C
    +120°C
    240V
    120V
    -
    600 mA
    -
    -
    Nitrile
    -
    -
    -
    -
    RS PRO
    Ultrasonic
    Threaded
    0 - 10 V
    ABS/PVDF
    2m
    -
    -25°C
    -75°C
    -
    30V dc
    M30 x 1.5
    -
    -
    -
    -
    -
    -
    -
    PW40
    RS PRO
    Ultrasonic
    Threaded
    0 - 10 V
    PVDF
    2m
    -
    -25°C
    75°C
    -
    30V
    M30
    -
    -
    -
    -
    -
    -
    -
    PVDF
    RS PRO
    Level Sensor
    Cable Mount
    2 Wire
    Stainless Steel
    3m
    -
    -20℃
    +80℃
    -
    28V
    -
    23mA
    0.1bar
    -
    -
    -
    Water, Oil, Liquids
    -
    -
    RS PRO
    Conductive
    Vertical
    -
    Polypropylene
    500mm
    -
    -
    100°C
    -
    -
    -
    -
    -
    -
    -
    -
    Fluid Level Regulation, Liquid Level Alarm
    -
    -
    RS PRO
    Ultrasonic
    Threaded
    4-20mA
    PVDF
    2m
    -
    -25°C
    75°C
    -
    30V
    M30
    -
    -
    -
    -
    -
    -
    -
    PVDF
    RS PRO
    Ultrasonic
    Threaded
    UART TTL
    PVDF/ABS
    120mm
    -
    -25°C
    75°C
    -
    30V
    M30
    -
    -
    -
    -
    -
    -
    -
    PVDF
    SICK
    Guided Radar
    Vertical
    0-10V, 2 PNP, 4-20mA, NPN
    PBT
    -
    IO-LINK
    -20°C
    +100°C
    -
    -
    -
    100 mA
    10bar
    -
    PTFE
    500mm
    -
    -
    -
    Vega
    TDR Sensor
    Cable
    HART
    Stainless Steel
    75m
    -
    -40°C
    +80°C
    253V
    48V
    -
    20 mA
    40bar
    -
    EPDM Rubber, FFKM, FKM
    -
    -
    -
    VEGAFLEX 81
    Carlo Gavazzi
    Level Probe
    Threaded
    -
    Stainless Steel
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    VNY
    Carlo Gavazzi
    Capacitive Sensor
    Flush Mounting
    PNP
    Plastic Housing
    2m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    CD34CNFLFN
    ifm electronic
    -
    -
    PNP
    Stainless Steel/FKM/NBR/PBT/PC/PEI/PP/TPE
    -
    IO-LINK
    0°C
    +60°C
    -
    -
    -
    200 mA
    0.5bar
    -
    -
    -
    -
    -
    -
    RS PRO
    Ultrasonic
    Threaded
    0→5V
    PVDF/PVC
    120mm
    -
    -25°C
    80°C
    -
    12V
    M30
    -
    -
    -
    -
    -
    -
    -
    NU
    Endress+Hauser
    Point Level Switch
    Flush Mount
    -
    Aluminium, Polyester, Stainless Steel
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ATEX
    Soliphant FTM50
    Vega
    Radar
    1.5" G/BSP Thread
    4-20mA
    PVDF
    5m
    Hart
    -40°C
    +80°C
    -
    35V
    -
    20 mA
    3bar
    -
    FKM
    15 m
    Liquids/solids
    -
    VEGAPULS C21
    Endress+Hauser
    Level Switch
    Vertical
    PNP
    PP
    1m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Liquipoint
    Carlo Gavazzi
    Level Probe
    Threaded
    -
    Stainless Steel
    1m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    VT
    Banner
    Radar
    Barrel M30
    NPN/PNP, Analog 4-20mA
    PBT
    -
    IO-LINK
    -40°C
    +65°C
    -
    30V dc
    M30
    -
    -
    -
    -
    -
    -
    -
    T30R
    Siemens
    Ultrasonic
    -
    -
    -
    10m
    -
    -20°C
    +95°C
    -
    -
    -
    -
    -
    -
    -
    -
    -
    ATEX
    Echomax XPS
    Gems Sensors
    Level Switch
    Vertical
    SPST NO
    Stainless Steel
    600mm
    -
    -40°C
    +204.4°C
    -
    -
    -
    -
    100psi
    -
    -
    -
    -
    -
    LS-1750
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