Posted in | Level Sensors

Compact VEGAPULS 31 for Continuous Level Measurement

VEGAPULS 31 is the perfect sensor solution for non-contact level measurement of liquids and bulk solids in simple applications.

  • 4-20 mA/HART output
  • Measuring range up to 15 m
  • Accuracy ±2 mm
  • Ex approval
  • On-site display
  • Three-button operation

It is ideal for use in storage tanks with acids, water treatment, lyes, and additives in all industrial areas or for quantifying levels in plastic tanks from the outside via the tank wall. As far as bulk solids are concerned, the sensors are utilized in open containers or small bulk solids silos.


  • Exact measurement results independent of medium properties and process conditions
  • Maintenance-free operation thanks to non-contact 80 GHz radar technology
  • On-site display for straightforward level control


  • Hydraulic oil station: Level and measurement in the hydraulic oil station
  • Intermediate bulk containers: Level measurement can be performed in IBC containers
  • Storage tank for flocculant: Level measurement and point level detection in flocculant storage tanks
  • Wet deslagger: Level measurement in the wet deslagger

Technical Specifications

Source: VEGA Grieshaber KG

. .
Measuring range – Distance 15 m [Meter - Foot]
Process temperature -40 ... 80 °C [°C - °F]
Process pressure -1 ... 3 bar [Bar - kPa - psi]
Accuracy ± 2 mm
Frequency 80 GHz
Beam angle
Materials, wetted parts PVDF
Threaded connection G1½, 1½ NPT, R1½
Seal material FKM
Housing material Plastic
Protection rating IP66/IP67, Type 4X
Output 4 … 20 mA/HART
Ambient temperature -40 ... 70 °C

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