Electromechanical lot system

NivoBob® - NB 4200

Application area

The electromechanical plumb bob sensors NivoBob® NB 4200 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 dusty, sticky or low DK bulk materials the NB 4200 works perfectly.

Technical Data

Measurement principleElectromechanical Lot-Sensor
Measuring taskContinuous level measurement
Version
  • Tape version
  • version with aiming flange
MediumSolids
Mounting position
  • top
  • angled (top)
  • on a Socket
Ambient temperature-40°C … +60°C (-40°F … +140°F)
Process temperature-40°C … +80°C (-40°F … +176°F)
Process pressure-0,2 bar … +0,2 bar (-3.0 psi … +3.0 psi)
Minimum sensitivity> 300 g/l (> 18 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 1.4301 (304)
  • Stainless steel 1.4310 (301)
  • Stainless steel 1.4305 (303)
  • PVC
  • PA
Mechanical loadstandard motor: 0,8 kN
Accuracy1% of max. range
Min. immersion length390 mm (15.3″)
Max. immersion length1,41 m (4.75′)
Power supply
  • 115V AC
  • 230V AC
  • 20…28V DC
Signal output
  • 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