Introduction

Level sensor caters to variety of manufacturing processes to fulfill demand of quality assurance, accuracy and production improvement by identifying the level of application media like solid or liquid. This article specifically covers the variety of level instruments used for different types of solids and the parameters that would be remember while choosing the right level sensor for process material of solid.

Selection based on Application Media

Different types of level instruments are available for level detection but before selecting the sensors, the exact type of application media should be known for betterment of output and process.

  1. Bulky Solids
  2. Granular Solids
  3. Powder Form

Bulky Solids

The process media which includes heavy weight materials like limestone, coal etc. are known as bulky solids. These types of application material required level instruments with rigid support to resist the higher weight.

  • Factors Affecting
    1. High Temperature - The bulky material like limestone, coal etc. are used in manufacturing processes where the temperature exceeds to high level. Level measuring devices with temperature endurance is better option to withstand in process.
  • Examples
  • Coal - Bulky Solids

    Coal

    Limestone - Bulky Solids

    Limestone

    Crushed Stones - Bulky Solids

    Stones

  • Recommended Products
  • Admittance based Level Sensor

    SLA Dot Display

    RF Admittance Level Sensor

    Suitable for longer distances between probe and evaluation unit.

    Admittance based Level Sensor

    SLA Bar Display

    RF Admittance Level Sensor

    Suitable for materials that are prone to absorbing materials.

    Admittance based Level Sensor

    SLA Series

    RF Admittance Level Sensor

    Compact coat-immune admittance level switch for sticky solids, pastes and slurries.

    Vibrating Rod Level Sensor

    Vibrosonde

    Vibrating Rod Level Sensor

    Compact level limit switch for free-flowing as well as for bulky solids.

Granular Solids

The collection of free flowing particles like grains, sugar etc. are known as granular material. The size of granular material vary with the application media. The grain size plays important role while choosing the vibrating forks level sensors.

  • Factors Affecting
    1. Grain Size - The most important factor that should be considered while selecting the level instruments for granular material. For choosing the vibrating forks series the maximum grain size should be 12 mm not more than that.
    2. Moisture Content - 7-10% of moisture content should be considered for recommanding the level instruments in granular materials for providing better accuracy and output.
  • Examples
  • Wooden Chips - Granular Solids

    Wooden Chips

    Sugar - Granular Solids

    Sugar

    Coffee - Granular Solids

    Coffee

  • Recommended Products
  • Vibrating-Fork-Type-Level-Sensor

    Vital

    Vibrating Fork Level Sensor

    Vibrating fork level switch for free-flowing solids, granules and powders.

    Vibrating Rod Level Switch

    Vibrosonde

    Vibrating Rod Level Sensor

    Vibrating rod type level switch for free flowing solids and grains.

    Rotary Paddle Level Sensor

    Orbit

    Rotating Paddle Level Sensor

    Stepmatic rotary paddle level switch used in most of the powders and granular solids.

    Rotary Paddle Level Sensor

    Capvel-ICT

    Capacitance Level Sensor

    Capacitance based level transmitter used for continous monitoring of grains and powder.

Powder Form

The powder form is also a class of granular material in which particle size are very small. The granular material are crushed or grinded to make the powder form.

  • Factors Affecting
    1. Stickiness - Some powder create coating on the level sensors as it contains some moisture during processing of material so it will be benificial to choose level sensors that are immune to build-up.
  • Examples
  • Flour - Powder form

    Flour

    Spices - Powder Form

    Spices

    Milk Powder - Powder Form

    Milk Powder

  • Recommended Products
  • Vibrating-Fork-Type-Level-Sensor

    Vital

    Vibrating Fork Level Sensor

    Vibrating fork level switch for free-flowing solids, granules and powders.

    Rotary Paddle Level Sensor

    Orbit

    Rotating Paddle Level Sensor

    Stepmatic rotary paddle level switch used in most of the powders.

    Admittance based Level Sensor

    Coat-Endure

    RF Admittance Level Sensor

    Compact coat-immune admittance level switch for sticky solids, pastes and slurries.

    Admittance based Level Sensor

    SLA Series

    RF Admittance Level Sensor

    Compact coat-immune admittance level switch for sticky solids, pastes and slurries.


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