Mineral raw materials

Moisture measurement

Liebherr has been developing measurement systems for industrial automation since 1985. Our sensors reliably determine the moisture in various materials. The benefit of Liebherr measurement systems is high precision thanks to 40 measurements per second, as well as the sensors' reproducibility. The systems can be integrated in various production facilities such as on conveyor belts, upstream and downstream of dryers, at transfer points, in hoppers but also in pipelines or tanks. Our systems measure, monitor and regulate the humidity or water content automatically and in real time the continuous measurement guarantees high precision.

Sensors are developed and manufactured at the Liebherr-Mischtechnik GmbH location in Bad Schussenried (Germany). Here, we produce and calibrate the sensors in an environment protected against ESD.

Reliability that promotes trust

Sensor tests at Liebherr

Sensor tests at Liebherr

Sensor tests at Liebherr

We test each sensor over the entire working temperature range in a process that takes several hours.

When Liebherr started producing sensors, we used the measurement systems that we developed ourselves only in our own concrete mixing plants. Here, the sensors are used to determine the sand moisture in the process. For this task, we developed sensors that work reliably even under extreme outdoor conditions. Our experience in concrete technology pays off for our customers: Liebherr sensors measure precisely and have a long service life.

Examples of uses for mineral raw materials

  • Moisture determination in sand
    Installed in the outlet of a silo, the Liebherr moisture measurement system determines the moisture continuously or, if required, in batches.

    Moisture determination in sand

    Installed in the outlet of a silo, the Liebherr moisture measurement system determines the moisture continuously or, if required, in batches.

  • Moisture determination in sand
    Installed above a conveyor belt of a concrete mixing plant, the sensor glides over the sand by means of sliding shoe carriages. The dead weight of the slide creates a uniform contact pressure; this is advantageous for determining the moisture.

    Moisture determination in sand

    Installed above a conveyor belt of a concrete mixing plant, the sensor glides over the sand by means of sliding shoe carriages. The dead weight of the slide creates a uniform contact pressure; this is advantageous for determining the moisture.

  • Moisture determination in iron ore
    The Liebherr moisture measuring sensor is also convincing in extremely abrasive materials.

    Moisture determination in iron ore

    The Liebherr moisture measuring sensor is also convincing in extremely abrasive materials.

  • Moisture determination in ceramic powder
    The FMS II moisture measurement system enables efficient editing directly during operation. Before further processing, the humidity is measured and the measured values are transmitted to the higher-level control.

    Moisture determination in ceramic powder

    The FMS II moisture measurement system enables efficient editing directly during operation. Before further processing, the humidity is measured and the measured values are transmitted to the higher-level control.

  • Moisture determination in quartz sand
    Whether installed directly on the quartz sand or mounted under the conveyor belt, the humidity sensor from Liebherr always determines the exact moisture in the sand.

    Moisture determination in quartz sand

    Whether installed directly on the quartz sand or mounted under the conveyor belt, the humidity sensor from Liebherr always determines the exact moisture in the sand.

  • Moisture determination in shards/broken glass
    From old to new. Used glass is returned to the cycle and sparkles in new splendour as glass containers in any shape.

    Moisture determination in shards/broken glass

    From old to new. Used glass is returned to the cycle and sparkles in new splendour as glass containers in any shape.

  • Moisture determination in excavated soil
    Reliable moisture measurement with Liebherr sensors and associated evaluation unit in gravel, clay and also loam.

    Moisture determination in excavated soil

    Reliable moisture measurement with Liebherr sensors and associated evaluation unit in gravel, clay and also loam.

  • Moisture determination in clay in the brickworks
    If the material flows are sometimes very uneven, the sliding shoe carriage can be weighted down with ballast. This will give very good and reproducible results.

    Moisture determination in clay in the brickworks

    If the material flows are sometimes very uneven, the sliding shoe carriage can be weighted down with ballast.

    This will give very good and reproducible results.

  • Use in sludge drying
    To avoid under and over-drying, Liebherr moisture measurement determines the exact moisture in-line during the process. The measured values can be transferred directly to the dryer control.

    Use in sludge drying

    To avoid under and over-drying, Liebherr moisture measurement determines the exact moisture in-line during the process. The measured values can be transferred directly to the dryer control.

  • Products

    These products are available for uses in the field of mineral raw materials.

    Litronic FMS P78

    Thousands of sensors are reliably in use worldwide by this sensor in a wide variety of materials and industries.

    Find out more

    Litronic FMS P30-S

    The smallest of the sensors was specially developed for confined spaces and impresses with its compact design. We offer suitable weld-on fittings for use in pipelines.

    Find out more

    Litronic FMS P80-CAN

    Our CAN-capable sensor sends the signals directly to the customer's control and is processed on site.

    The plug-in sensor is specially designed for on and off-road applications, vehicles in construction and agricultural areas as well as in engine applications.

    Find out more

    Litronic WMS

    Determination of the water content in liquids (emulsions/oils) and bulk solids in explosion-protected areas is possible with our WMS product family.

    Find out more

    Litronic FMS II Evaluation and transfer module

    The modular design allows networking of up to 16 sensors on one evaluation unit. Extensive signal processing options for transfer to a higher-level control and the exact and fast calibration of the measured sections are just some of the many advantages.

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    Litronic FMS IV Evaluation and transfer module

    To meet the requirements of our customers, the new generation of the evaluation unit is based on ProfiNet data transmission. With the Ethernet standard, you and we react more flexibly and quickly to new and special requirements in process automation.

    Find out more

    Further information and downloads

    • Energy and environment:Rock, gravel, sand, fly ash, recycled glass (shards), biomass, shredded plastics (fluff)
    • Building materials industry:Sand, quartz sand, recycled glass, soda, MVA, fly ash, ores, minerals, dusts, cinders, various aggregates, moulding sands, raw meal, filter cakes, ceramic powder, coke, charcoal, FGD gypsum, talc, chalk, silt, clay, mineral and aluminium granulate, slurries

    We will be happy to send you the relevant job reports on request.

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    Sales contact person

    Liebherr-Mischtechnik GmbH

    Im Elchgrund 12

    88427 Bad Schussenried

    Germany

    • Phone+49 7583 949 807

    Service contact person

    Liebherr-Mischtechnik GmbH

    Im Elchgrund 12

    88427 Bad Schussenried

    Germany

    • Phone+49 7583 949 800

    Sales and service partners worldwide contact person