Product Category

Radar sensors

NivoRadar ® - NR 4100

Application area

The non-contact 80 GHz FMCW radar sensor NivoRadar® NR 4100 with a very narrow beam angle of 4° is used in various industrial applications in storage silos, process tanks and IBC containers or on stockpiles for continuous level measurement. The free-radiating level transmitter has a compact design with a 1″ process connection (PVDF) and a measuring range of up to 30 m as well as a very fast response time. The radar sensors are food compliant, WHG-certified and suitable for use in hazardous areas. The radar level transmitters have a high dust protection class and can be used in abrasive bulk materials as well as materials prone to caking.

Technical Data

Measurement principleRadar (non-contact)
Measuring taskContinuous level measurement
  • Liquids
  • Solids
Mounting positiontop
Ambient temperature-40°C … +80°C (-40°F … +176°F)
Process temperature-40°C … +80°C (-40°F … +176°F)
Process pressure-1 bar … +3 bar (-14.5 psi … +43 psi)
Minimum sensitivityDK ≥ 1.1
Housing materialPlastics (PVDF)
Housing protection ratingIP66/68 (3 bar), Type 6P
Threaded connection
  • G 1″
  • NPT 1″
  • R 1″
Flange connection
  • ≥ 3″
  • ≥ DN80
Hygienic fittings
Wetted materialsPVDF
Accuracy± 2 mm (± 0.07″)
Power supply12…35V DC
Signal output4…20 mA/ HART (2-wire)
  • CE
  • ATEX
  • IEC-Ex
  • General purpose
  • FM
  • KC
  • UKCA
Explosion protection
  • Dust Ignitionproof (Ex t)
  • Intrinsic Safe (Ex i)
  • Encapsulation (Ex m)
Hygienic / Pharma
  • EG 1935/2004
  • FDA
Ship approval
Overfill protectionWHG
SIL qualification
Further approvals
User InterfaceMobile Device + UWT LevelApp
Optical indicator