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UWT GmbH

UWT GmbH

  • FM
  • EHEDG European Hygienic Engineering &
  • Design Group
  • ISO 9001:2015
  • UKCA

UWT GmbH

  • FM
  • EHEDG European Hygienic Engineering &
  • Design Group

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Electromechanical Lot System (NivoBob® 3000/4000) by UWT GmbH

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The NivoBob® series of plumb bob sensors is used for continuous level measurement within bulk storage silos and for interface measurement.

The simple electromechanical measurement principle is a truly reliable all-rounder in most bulk materials.

The sensor weight, made of a suitable material, attached to either a tape or rope is electromechanically lowered from the top into the vessel. Once the sensor weight rests on the material, the winding direction of the motor changes and the sensor weight is rewound to the upper stop position.

For interface measurements, the sensor weight can be adjusted according to the density of the sediment. The distance is electronically measured and together with the programmed silo geometry information the microprocessors convert this distance into a volumetric output signal. The NivoBob generates an analog 4-20 mA signal and a Modbus RTU or Profibus DP interface for the evaluation systems.

As the system is immune to dust, dielectricity, conductivity, humidity and caking, the NivoBob always delivers a reliable level signal.
The system is simple to operate and extremely durable which keeps service and operating costs to an absolute minimum.
UWT can offer a 6 year warranty on this product.

  • Variety of sensing weights to suit any application.
  • Insensitive to dust, material changes, humidity, adhesion, temperature fluctuation, etc.
  • Simple installation and commissioning.
  • High measurement accuracy even at long range.
  • International approvals - suitable for use within hazardous areas.
  • Long service life (up to 225,000 measurements) ensure low maintenance costs.
  • Various threaded and flanged connections available.
  • Also available with DC power supply.
  • Process temperatures up to 250°C.
  • Housing: Aluminium IP66 (Type 4)
  • Certificates: CE, ATEX, FM, TR-CU
  • Process Temperature Range: -40°C to +250°C
  • Pressure Range: -0.5bar to +1.7bar
  • Sensitivity: ab 20g/l depending on sensor weight
  • Supply Voltage: AC: 98 .. 253V 50-60Hz; DC: 20 .. 28V
  • Measuring Range: max. 30m
  • Rope Material: Stainless steel 1.4401 (316) 1mm
  • Signal Output: 4-20mA; Relay counting pulse; fault reporting; upper stop position
  • Communication: Modbus RTU, Profibus DP
  • Process Connection: Flange: DN100 PN16, 2", 3" and 4" 150lbs; Thread: R1½", NPT1½", NPT3"
  • Sensor weight: 1.0kg

Product advisor: Julian Bareth

Product inquiry  

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