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Product description
26.07.2018  |  13241x
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Nivobob® - electromechanical bobsystem

Simply reliable. Simple installation and set-up

Multifunctional unit for discontinuous level monitoring in bulk goods

The electromechanical measurement device is an invaluable instrument in the field of inventory management due to its advanced electronics technology. The reliable electromechanical lot system Nivobob® with its robust mechanical design has for that reason become the choice of many plant operators across the globe faced with demanding conditions. The Nivobob® series of plumb bob sensors is used for continuous level measurement within bulk storage silos and also 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.

The electromechanical lot system devices communicate directly with PLC control systems via an analog 4…20ma signal or even a MODBUS RTU or Profibus digital protocol. Thus the Nivobob® lot systems are directly compatible with all conventional control systems. The user friendly software with its quick set-up option in different languages makes the programming of the required parameters an easy job. For the lot device threaded or flange mounting is possible.


One of the most commonly asked question regarding this technology is how it can be prevented that the cables of the lot system get tangled, i.e. as a result of constant winding and unwinding or by material being drawn up causing interference. UWT has addressed this problem and has introduced a design which utilizes only one or two reels. It is also equipped with a brush cleaning system or a spring-tensioned tape fitted with a scraping mechanism which removes material from the cable or tape when is retracted into the housing.

Continuous Measurement

There are several industries where the level detection of sludge or solids within liquids is required. For example within sediment tanks/containers, filters or lamella separators within the metal industry, chemical plants, in limestone or gravel plants and within the wastewater industry. This requirement depends entirely on the accuracy and stability of the sensor. In many of these situations, the presence of pollution, chemicals and gases mean that the sensors must possess particular resistance. The Nivobob series 3300/3400 meet the needs of many interface measurements. Their simple and straightforward measuring principle ensure total reliability. The level evaluation and monitoring is via an analog signal 4-20mA and Modbus RTU / Profibus DP interface.

Company information

UWT GmbH
UWT GmbH
UWT GmbH is one of the world’s leading manufacturers of measurement technology for the detection and monitoring of levels, limit levels in any kind of bulk materials, solids as well as in liquids, pastes and foam. Since the founding, the product portfolio has developed and offers solutions for a variety of industries. > Headquarter with development, production and sales department in Germany > Subsidiaries in USA, Great Britain, India, Mexico, Brazil and China plus a global net of exclusiv distributors > Over a million successfully solved applications in more than 70 countries > Variety of industry solutions according to individual requirements > UWT products represent quality, flexibility and reliability Our products are named under: Rotonivo® - Rotary paddle switch incl. SIL2 version Vibranivo® - Vibrating fork Mononivo® - Vibrating rod probe RFnivo® - Capacitive level switch also with anti-corrosive Teflon® coating for flue gas cleaning Capanivo® / NivoCapa® - Capacitive level switch NivoBob® - Electro-mechanical Plumb Bob as well for Interface NivoRadar® - Radar sensors NivoGuide® - TDR guided radar NivoTec® - Level monitoring and visualisation From development and production to final assembly and comprehensive technical advice, all services are provided from a single source. The focus is on the highest quality, technical know-how and good cooperation with customers, suppliers and partners. What is particularly important to the managing directors Uwe Niekrawietz, Markus Schalk and Andreas Haug is the well-being of the 165 employees worldwide: ”Healthy and happy employees can achieve incredible things”.  The product portfolio is developed further every year and enables holistic solution concepts for a variety of industries. In addition to level and point level measurement, UWT offers monitoring and visualisation systems and complete project planning. Well-known plant manufacturers and end customers worldwide appreciate the customised solutions as well as the easy handling and durability of UWT sensors. In order to be able to pass on the best possible added value to customers in the future, UWT’s corporate strategy is consistently geared towards steady and sustainable growth.
Last update: 12.03.2024

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