Distance Measurement via Ultrasound

Flexible Function

Measuring the levels of containers is just another part of everyday business in many areas of industry or agriculture, such as in dairies, chemical companies or mineral establishments. Here, ultrasonic sensors from elobau present the ideal solution to consistently, precisely and reliably detecting the filling level of liquids or bulk solids. That’s because with ultrasound, almost any material and substance can be detected, regardless of whether or not a surface has matte, gloss or even transparent properties.

Sensors from elobau ensure precise measurement even at larger distances of up to 8,000 mm, meaning that not even the range represents a problem for the installation of ultrasonic sensors. The filling level in a barrel, vessel, silo or tank can be continuously recorded and emitted via two switching signals and/or an analogue signal.

Abstandsmessung in der Agrarwirtschaft

    Example of Use: Agricultural Machinery

    Managing agricultural land places special demands on man and machine, because changes in the terrain have to be taken into account just as much as changing plant heights. In order to protect plants and ensure expensive agricultural machines are not subject to damage, sometimes the booms of spraying machines must be flexibly adapted. The same applies to the cutting tools of harvesting machinery.

    Ultrasonic sensors are able to keep the attachments at a constant distance from the plant tips or ground, so that collisions with the field or injuries to the grain head can be excluded. Further advantages of measurement using ultrasound include optimum distribution of expensive plant protection products as well as aiding the driver, who is then able to direct full attention to controlling the machine.

    Example of Use: Bulk Materials

    The cleaning of waste water generates huge quantities of sewage sludge every day, which either must be put through further processing or disposed of properly. To do so, the sewage is filled into appropriate transport vessels or put into containers for interim storage. To prevent overfilling here, monitoring the filling level by means of ultrasonic technology is recommended. The sensors ensure constant control of the fill level and show the results as analogue values.

    If the maximum permitted filling level of the container is reached, the sensor triggers a switching operation and stops the supply of material. It is important to note that bulk materials such as sewage form into cone shapes. The sensor must therefore be appropriately mounted, ideally so that the sound beam is aligned diagonally toward the middle of the cone. This ensures an adequate sound reflection given the increasing fill level.

    application

    elobau Ultrasonic Sensors

    Precise, flexible, reliable

    The principle of ultrasonic technology is as simple as it is effective. High-frequency ultrasonic sound waves are emitted by the sensor, which are then reflected by the target object, and detected again by the sensor.

    Find the product that suits your needs in our product selector.

    ultraschallsensoren
    Products
    elobau Ultraschallsensor U18s

    Ultrasonic Sensor U*18

    distance measurementobject detection

    ​Thanks to the compact and robust design, the U*18S is the optimum solution for difficult application conditions. In combination with various output forms, the space-saving version offers flexibility for measuring and switching applications. In addition, this series can be used either as a diffuse reflection sensor or as a retro-reflective sensor.

    elobau Ultraschallsensor U18

    Ultrasonic Sensor U*18S

    distance measurement

    Ultrasonic sensors of the U*18 series offer maximum functionality and precision, even under demanding conditions, including in potentially explosive environments. Two different housing materials, an operating range of up to 2.2 metres, four operating modes and various output forms leave no application unsolved. Simple configuration, either via teach-in button or IO-Link, also ensures high system availability. Synchronisation as well as multiplex mode ensures high process reliability even when operating multiple sensors simultaneously.

    elobau Ultraschallsensor U30

    Ultrasonic Sensor U*30

    level measurementdistance measurementobject detectionposition detection

    Thanks to high-performance electronics, the U*30 series is the ideal partner for wide-range detection of objects and filling heights of distances of up to 8 metres. Like all cylindrical designs from elobau, the sensors are temperature compensated to achieve high accuracy even in the case of temperature fluctuations. Available in stainless steel and plastic versions, the versatility of this sensor allows it to be used for a wide range of application requirements.

    elobau Ultraschallsensor Uda18

    Ultrasonic Sensor UDA18 ATEX

    ​UDA18 ATEX ultrasonic sensors have the same functions and features as the sensors of the U*18 series. They were, however, developed especially for use in areas potentially subject to gas or dust explosion. Their ATEX approval makes them suitable for use in the chemical and pharmaceutical industries as well as in systems that process oil and gas.

    U*18U*18SU*30UDA18 ATEX
    measurement range

    100…900 mm
    200…2200 mm

    40…300 mm
    80…1200 mm

    250…3500 mm
    350…6000 mm*
    600…8000 mm*

    100…900 mm
    200…2200 mm

    ​operating modes

    retro-reflective sensor
    diffuse reflection sensor

    retro-reflective sensor
    diffuse reflection sensor

    retro-reflective sensor
    diffuse reflection sensor

    ​diffuse reflection sensor

    ​outputs

    Push-Pull / IO-Link
    NPN / PNP
    4…20 mA
    0…10 V

    Push-Pull / IO-Link
    NPN / PNP
    4…20 mA
    ​0…10 V

    Push-Pull / IO-Link
    NPN / PNP
    4…20 mA
    0…10 V

    NPN / PNP
    4…20 mA
    0…10 V

    ​operating voltage

    10…30V DC

    10…30V DC

    10…30V DC

    10…30V DC

    adjustment option

    ​teach-in button
    IO-Link

    ​programming cable
    ​IO-Link

    ​teach-in ​button
    IO-Link

    ​teach-in button

    ​operating temperature

    -20…+70 °C

    -20…+70 °C

    -20…+70 °C

    -20…+50 °C

    ​housing material

    DIN 1.4404
    ​or PBT

    DIN 1.4404
    ​or PBT

    DIN 1.4404
    ​or PBT

    DIN 1.4404
    ​or PBT

    ​dimensions

    M18x1
    L = 91,6 mm

    M18x1
    ​L = 60,3 mm

    ​M30x1,5
    L = 98,9mm

    M18x1
    L = 91,6 mm

    ​connection type

    ​M12 5-pin connector

    M12 4-pin connector

    ​M12 5-pin connector

    M12 5-pin connector

    protection class

    IP 67

    IP 67

    IP 67

    IP 67

    ​approvals

    CE
    cULus

    CE
    cULus

    CE
    cULus

    CE
    cULus
    ATEX

    ATEX

    gas (EX) version:
    II 3G Ex nA IIC T6 Gc (zone 2)​

    dust (EX) version:
    II 3D Ex tc IIIB T60°C Dc (zone 22)​

    IO-​Link

    ​yes

    ​yes

    yes

    ​synchronisation

    ​yes

    yes

    yes

    ​multiplex operation

    ​yes

    yes

    yes

    ​temperature compensation

    ​yes

    ​yes

    yes

    yes

    downloads

    EU declaration of conformity
    (.pdf // 105 kb)

    UL approval
    (.pdf // 72 kb)

    IODD Software
    (.zip // 9,4 mb)

    IODD
    (.zip // 160 kb)

    operating manual
    (.zip // 2,54 mb)

    EU declaration of conformity
    (.pdf // 105 kb)

    UL approval
    (.pdf // 72 kb)

    IODD Software
    (.zip // 9,4 mb)

    IODD
    (.zip // 101 kb)

    operating manual
    (.zip// 1,36 mb)

    EU declaration of conformity
    (.pdf // 105 kb)

    UL approval
    (.pdf // 72 kb)

    IODD Software
    (.zip // 9,4 mb)

    IODD
    (.zip // 287 kb)

    operating manual
    (.zip // 3,32 mb)

    EU declaration of conformity
    (.pdf // 80 kb)

    UL approval
    (.pdf // 72 kb)

    operating manual
    (.zip // 1,0 mb)

    Installation and safety instructions
    (.pdf // 398 kB)

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    elobau codeOperating modeRangeHousingMaterialDigital outputAnalogue outputIO-LinkATEXSYNCMUX 
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