Tecfluid LD Series - GRM Válvulas e instrumentación
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Tecfluid LD Series


Tecfluid LD Series

Vibrating fork level switch for liquids and solids

Tecfluid LD Series

Tecfluid LD Series


  • Robust and compact
  • Suitable for liquids (model LD61) and solids (model LD60)
  • No moving parts, low maintenance
  • Corrosion resistant materials
  • Not affected by temperature or pressure changes
  • Suitable for liquids with viscosity up to 10000 cSt
  • Liquid density higher than 0.6 kg/l
  • Solids: depending on application
  • Detection length: up to 2 m
  • Switching time: 1 s approx.
  • Connections:
    • Threaded connections G1 or 1” NPT
    • Flanged connections EN 1092-1 DN40 PN25 Other flange standards on request
    • Sanitary connections according to ISO 2852, SMS 1145, DIN 11851, TRI-CLAMP®
  • Materials: EN 1.4404 (AISI 316L). HALAR® coating onrequest
  • Level detection, with LED status indication
  • Options:
    • Relay output
    • NAMUR output Ex ia IIC T4 or T6

Working principle:

The LD series level switches are based on the variation of the natural resonant frequency of a vibrating fork when it comes into contact with a liquid or a solid. This variation is detected by the internal electronics and is used to determine the state of the output.


  • Pump control
  • Open and pressurized tanks, tanks with agitation
  • Open channel and empty / full pipe detection
  • Distillation columns and evaporators
  • Chemical dosing tanks


  • LD61liquids level detection
  • LD60solids level detection
  • LD6XN liquids or solids level detection, with NAMUR Ex output
  • LD6XRliquids or solids level detection, with relay output
  • LD6XML liquids or solids level detection, with enlarged detection length


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