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17.11.2020  |  1576x
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Rotary paddle Rotonivo® the reliable solution for level control

Simple and reliable measurement technology by UWT

A level limit sensor has to cope with low bulk density, bridging, caking, abrasiveness, corrosion, leverage forces, high and low process temperatures, electrostatic charging and so on. Rotating level limit switches of UWT have been designed to meet these challenges of different industry sectors and cover various changing approaches, also within extraordinary applications. The rotating paddle switch can be used as full, demand or empty detectors in silos or containers.
The trusted, multifunctional and maintenance free unit for level monitoring of bulk goods is versatile and has a modular design. With its simple electromechanical measuring principle it can also be adapted for extreme process conditions. A motor driven shaft causes the vane to rotate. Once the material level reaches the vane, thereby preventing further rotation, this creates a torque, which is converted via a switch to an electric signal. When the vane is free again of the material, the output signal is reset and the motor driven shaft rotates again.

The Rotonivo® provides very precise level limit detection as the sensor is unaffected by dust as well as the build-up of adhesion. The Rotonivo® 3000 models as high temperature version handle process temperatures up to +1100°C. Depending on the given conditions the units are equipped with the necessary sealing (Viton, Teflon, Ceramics). The simple and reliable measuring device is easy and fast installed and needs no further maintenance.
The PNP electronics for the Rotonivo® RN 3000 and RN 4000 ranges uses 3-wire electronics technology with a non-contact output, open collector, PNP. These electronics can be connected to any standard PLC with 24V DC power supply and PNP input card.
Further the sensor has a mechanically stable shaft bearing design with ball-bearing and a robust aluminum die-cast housing.

With the whole Rotonivo® portfolio being internationally certified with amongst others ATEX, FM and new Inmetro and TR-Cu-Ex it is conform to regulations for use in hazardous areas all around the world. The Rotonivo® 6000 series is also certified to SIL 2 (safety integrity level 2), particular for systems with hazard-causing processes, such as in chemical plants where the consideration of functional safety has become indispensable.

Company information

UWT GmbH
UWT GmbH
The UWT has become one of the leading suppliers of measurement technology on the world market today for the level detection in silos and tanks for material manufacturing processes. When UWT started, almost 40 years ago, with the development of ingenious products. UWT supply level limit and content measurement sensors for bulk solids and liquids. A company reaches such a position only if the following key elements interact: Sound management, good understanding of the needs of the markets, innovative product solutions, skillful investment and above all, committed and dedicated employees. Different measurement techniques are used within a variety of industries depending on the medium and application in question.UWT products represent quality, flexibility and reliability in over 70 countries across the world. Having successfully solved over 1 mio. applications within the bulk solids sector, UWT has expanded still further by introducing a new and innovative product range for the liquids market which is delivering reliable solutions for applications in this area. The company is certified ISO 9001:2015 and constantly expands its portfolio of product certifications (ATEX, EHEDG, FM, CSA, INMETRO, etc.) particularly with regard to the international markets. The development, production and sales departments are located at our headquarters in Germany, with a further production site in Malta. UWT has also established successful sales offices in the USA, UK, China, India, Brazil and most recently Mexico. With this global orientation, it is possible to serve and support customers with complete competence and flexibility. From development through production to final assembly and comprehensive technical advice, UWT can offer a complete service from a single source. The strongly held belief by the CEO`s Uwe Niekrawietz, Markus Schalk and Andreas Haug is for the welfare of over 165 employees world-wide: „Healthy and happy employees can make the unbelievable happen“. Our portfolio includes sensors for liquids: * Capanivo® 7000/8000 - capacitive sensors * RFnivo® 8000 - capacitive sensors * NivoCapa® 8000 - capacitive sensors * NivoGuide® 8000 - TDR guided radar * NivoRadar® 7000 - non contact radar sensor Sensors for bulk solids: * Rotonivo® - rotary paddle * Vibranivo® - vibrating fork * Mononivo® vibrating rod * Capanivo® 4000 - capacitive sensors * RFnivo® 3000 - capacitive sensors * NivoBob® 3000/4000 - electromechanical lot system * NivoRadar® 3000/4000 - contact free radar sensor * NivoGuide® 3000 - guided radar sensor (TDR) NivoTec® - visualisation systems
Last update: 12.03.2024

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