Product Category

Electromechanical lot system

NivoBob® – NB 3100

Application area

The electromechanical plumb bob sensors NivoBob® NB 3100  is used for continuous level measurement in bulk storage silos of various applications. The simple electromechanical measuring method makes it a reliable all-rounder, approved in the practical use in almost all bulk solids. Especially in granulates or bulk solids with a low DK value, the NB 3100 works perfectly.

Technical Data

Measurement principleElectromechanical Lot-Sensor
Measuring taskContinuous level measurement
Version
  • Rope version
  • Version with increased corrosion resistance
MediumSolids
Mounting position
  • top
  • on a Socket
Ambient temperature-40°C … +60°C (-40°F … +140°F)
Process temperature-40°C … +250°C (-40°F … +482°F)
Process pressure-0,5 bar … +1,7 bar (-7.3 psi … +25 psi)
Minimum sensitivity> 20 g/l (> 1.2 lbs/ft3)
Housing typedual chamber
Housing materialAluminium
Housing protection ratingIP66, Type 4
Threaded connection
  • ≥ R 1 1/2″
  • ≥ NPT 1 1/2″
Flange connection
  • ≥ DN100
  • ≥ 2″
Hygienic fittings
Wetted materials
  • Aluminium
  • Stainless steel 1.4305 (303)
  • Stainless steel 1.4301 (304)
  • Stainless steel 1.4401 (316)
  • PVC
  • PA
  • PP
Mechanical load
  • standard motor: 0,8 kN
  • brushless motor: 1 kN
Accuracy0.5% of max. range
Min. immersion length366 mm (14.44″)
Max. immersion length1,8 m (5.99′)
Power supply
  • 98…253V AC
  • 20…28V DC
Signal output
  • 0/4…20 mA
  • Relay
  • Modbus RTU
  • Profibus DP
Approvals
  • CE
  • General purpose
  • ATEX
  • TR-CU
  • FM
Explosion protectionDust Ignitionproof (Ex t)
Hygienic / Pharma
Ship approval
Overfill protection
SIL qualification
Further approvals
User InterfaceLCD Display with push buttons
Optical indicatorLED + Display
Adjustment possibility
  • self diagnostics
  • menu-driven quick start
  • volume table