Level Measurement

of Liquid and Solid Media

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.

Füllstandsmessung in der Agrarwirtschaft

    Example of Use: Agricultural Machinery

    Ultrasonic sensors also demonstrate their excellent benefits on fruit plantations. If they are mounted at the side of a plant sprayer, they detect gaps between the fruit trees. In this way, it is ensured that plant protection products are only distributed on the trees and the gaps in between are left untouched.

    This results in more effective management of surfaces, eases the burden on the environment and a not-insignificant reduction in costs for agricultural enterprises. Due to their range and their high protection class, elobau ultrasonic sensors are ideally suited to use in the agricultural sector.

    Example of Use: Liquids in Medical Technology

    Ultrasonic sensors have increasingly proven themselves when monitoring and controlling liquids in medical diagnostic instruments. These devices are used for a variety of different liquids. As part of this, the respective fill levels must be continuously monitored, from emptying the reagent containers to filling the waste water containers.

    Ultrasonic sensors help to ensure that manual intervention is kept to a minimum and the operating times of the instruments can be maximised.

    Furthermore, they also ensure that sufficient reagent fluid is always present for in-vitro diagnostics, because if the quantity is not sufficient, the series of measurements have to be repeated – an unnecessary amount of time and costs.

    When disposing in waste water containers, the ultrasonic sensors prevent overfilling or overflow and thereby avoid biological hazards to people and the environment, or damage to machinery and equipment from contamination.

    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 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 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 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.

    elobau Ultraschallsensor 2uf

    Ultrasonic Sensor 2UF

    distance measurementobject detectionposition detection

    ​This special version of the ultrasonic sensor is specially suited for reliably detecting the fill level of mobile machines. The extreme temperature range as well as the high protection class are essential for use in these applications. With the use of an optional focus tube, precise measurement of agitated media, or while on an incline, is also possible. In addition to mobile applications, stationary applications are also possible. The fill level is output via either a voltage or current output.

    U*18SU*18U*30UDA18 ATEX2UF
    measurement range

    40…300 mm
    80…1200 mm

    100…900 mm
    200…2200 mm

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

    100…900 mm
    200…2200 mm

    ​85…1800mm**

    ​operating modes

    retro-reflective sensor
    diffuse reflection sensor

    retro-reflective sensor
    diffuse reflection sensor

    retro-reflective sensor
    diffuse reflection 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

    ​4…20 mA
    0,5…4,5 V

    ​operating voltage

    10…30V DC

    10…30V DC

    10…30V DC

    10…30V DC

    ​8…​36V DC

    ​adjustment option

    ​programming cable
    ​IO-Link

    ​teach-in button
    IO-Link

    ​teach-in ​button
    IO-Link

    ​teach-in button

    operating temperature

    -20…+70 °C

    -20…+70 °C

    -20…+70 °C

    -20…+50 °C

    -40…+105 °C

    ​housing material

    DIN 1.4404
    ​or PBT

    DIN 1.4404
    ​or PBT

    DIN 1.4404
    ​or PBT

    DIN 1.4404
    ​or PBT

    ​PA12

    dimensions

    M18x1
    ​L = 60,3 mm

    M18x1
    L = 91,6 mm

    ​M30x1,5
    L = 98,9mm

    M18x1
    L = 91,6 mm

    ​4-​hole ​flange
    ​division: 4 x 90°
    ​pitch circle: 65 mm
    ​head ​height: 33,4 mm

    ​connection type

    M12 4-pin connector

    ​M12 5-pin connector

    ​M12 5-pin connector

    M12 5-pin connector

    ​AMP Superseal 1.5 3-​pin

    protection class

    IP 67

    IP 67

    IP 67

    IP 67

    IP 67

    ​approvals

    CE
    cULus

    CE
    cULus

    CE
    cULus

    CE
    cULus
    ATEX

    CE

    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

    yes

    downloads

    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 // 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 // 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)

    operating manual english
    (.pdf // 690 kb)

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    elobau codeOperating modeRangeHousingMaterialDigital outputAnalogue outputIO-LinkATEXSYNCMUX 
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