More than sensors+automation

JUMO NESOS R20 LT - Convertisseur de mesure de niveau avec flotteur (408320)


  • Mesure du niveau à l'aide de flotteur et  de chaîne Reed
  • Résolution jusqu'à 5 mm précis– garantit une mesure précise
  • Transmission via le signal normalisé 4 à 20 mA
  • Indice de protection élevée jusqu'à IP68
  • Mesure de niveau avec de faibles hauteurs de remplissage de 0,1 m à 4 m
  • Pas de coût de programmation ni de configuration (Plug-and-Play)
  • Pt100 ou Pt1000 disponible en option
  • Homologations pour la construction navale et les zones antidéflagrantes et certification à la directive sur les équipements sous pression (DGRL)

Avantages client

  • Proven, maintenance-free measuring principle
  • Customer-specific solutions possible – many materials and forms are available for the float; in-house manufacturing of the float with a high production depth
  • Flexible measurement – level can be determined independently from the container geometry due to the measuring principle
  • Independent from media properties in which foam formation, conductivity (permittivity (ε)), pressure, vacuum, steam, and condensation have an influence
  • Quick error check when servicing
  • High degree of chemical resistance due to availability of different materials
  • Cost-effective installation and mounting
  • Price-performance ratio optimized through the use of standard components and processes


  • Mesure de la limitation du milieu de liquides dans des réservoirs de stockage et des citernes
  • Traitement des eaux et des eaux usées
  • Food & Beverage
  • Chimie
  • Pétrochimie
  • Gaz & pétrole
  • Construction de machines et d'équipements
  • Construction navale
  • Technique énergétique


Level measurement is carried out according to the Archimedes' principle for liquids in a semi continuous manner. The float moves along the guide tube as the level rises or falls. With its magnetic field the magnet in the float actuates the reed chain that is installed in the guide tube. As a result, a resistance value is converted and transmitted into a standard signal 4 to 20 mA. The signal can be evaluated and processed further by downstream electronics. Depending on the variant ordered, various electrical connections, process connections, guide tube lengths, floats, and resolutions are available. With the optional temperature sensor, both the level measurement and the temperature can be acquired via just one measuring point.

The output signal always refers to increasing level.

With the level transmitter, the levels of tanks and containers are transferred with a standard signal.

When connecting to intrinsically safe electrical circuits, the intrinsically safe version of the product [Ex-i] fulfils the requirements for explosion group II of categories 1/2 G and 1/2 D, as well as 2 G and 2 D. It is therefore suitable for use in the potentially explosive area of zone 0, 1, and 2 for gas (G) and zone 21 and 22 for dust (D). Here, a certified, intrinsically safe isolation amplifier in [Ex-ia] must be used.

When connecting to electrical circuits that are not intrinsically safe, the version of the product with flameproof enclosure [Ex-d] fulfils the requirements for explosion group II of category 1/2 G and 2 D. It is therefore suitable for use in the potentially explosive area of zone 0, 1, and 2 for gas (G) and zone 21 and 22 for dust (D).

A separate certificate from TÜV SÜD is available for Pressure Equipment Directive 2014/68/EU.

Approvals are available for applications in shipbuilding.

Further technical information is available in the Documentation category.