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9 - 11 April 2019 // Nuremberg, Germany

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Exhibitors & Products POWTECH 2019
Zoom product LOGO_Capacitive level limit switch RFnivo® and Capanivo®

Capacitive level limit switch RFnivo® and Capanivo®

LOGO_Capacitive level limit switch RFnivo® and Capanivo®

Capacitive level limit switch RFnivo® and Capanivo®

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RFnivo®  / Capanivo® -  Capacitive level limit switch

Capacitive single rod probe  RFnivo® 3000

Allrounder for any type of bulk goods. Heavy Duty Models.

The new RFnivo® is the first choice for many bulk applications.

We are often asked whether there is one measurement principle, which works reliably in all bulk solids applications? Is there one sensor that can cope with low bulk density, bridging, caking, abrasiveness, corrosion, high tension and leverage forces, high and low process temperatures and pressures, low and fluctuating dielectric value as well as being able to offer a short reaction time? To date, the answer to this question has been “no”, there has not been any one measuring principle to solve all challenges in all applications. Therefore, UWT decided to enhance their portfolio with a capacitive sensor that is able to offer a solution for any challenge. The RFnivo® 3000 is the new capacitive level switch for bulk solids and is used as overfill protection as well as a demand or empty detector in process or storage containers. So what does the RFnivo® offer in addition to the other UWT sensors?

The RFnivo® is a single-rod probe which has been designed to detect bulk solid materials without the use of temperature-limiting components. The RFnivo® is available in stainless steel grade 1.4301 (303) to 1.4404 (316L), with PPS or ceramic insulators and optional Teflon seals. Whilst the RFnivo® with ceramic insulators can cope with extreme process temperatures up to +500°C it is worth pointing out that the standard version with PPS insulators can handle temperatures up to +240°C. The RFnivo® is suitable for use in containers with overpressure of up to 25bar as standard which sets the RFnivo® apart from other sensors such as paddle switches or vibrations forks. The heavy duty version of the RFnivo® boasts a very high torque of 525Nm and tensile forces of up to 40kN. The electronics guarantee a very high sensitivity when used with the correlating length of single-rod probe. Bulk materials can be detected from a dielectric value of 1.5 and more which covers most bulk materials. The universal voltage electronic is equipped with a clear display and 3 buttons and provides a DPDT signal for signal analysis. During the entire operation the live capacitive measurement data is shown on the display. Parameters such as FSH and FSL as well as the response time of the signal output are easily set up using the Quick Start Menu.

A test button allows the manual start  the self-diagnosis program of the probe. It is also possible to set up automatic self-diagnosis which regularly checks the proper functioning of the RFnivo® and activates the failsafe in case of an error. The self-diagnosis is performed in the background without affecting the function of the probe in use.

All RFnivo® probes come with the Active Shield technology as standard. The Active Shield technology prevents faulty switching caused by the build-up of material which is prone to caking or bridging on the probes extensions or caused by the build-up of condensed water in the process.  UWT gives highest priority to ensuring all their products are designed to be reliable and maintenance free.

Capacitive level limit switch -  Capanivo® 4000

Overpressure up to 25 bar. Maintenance free. Easy mounting or installation

The Capanivo® level limit switch can be used in many solids and liquids as a full, demand or empty detector.

The robust, glass reinforced PPS (Polyphenylene Sulfide) sensor is even suitable for food applications whilst also resistant to many forms of aggressive material. The Capanivo® can be used in storage and process vessels, or in pipes, as a limit switch and spillage detector.

The electrodes in the sensor make up a condensator. As the level of the material changes, the capacitance changes as well. The integrated electronics evaluate the change in capacity and convert it to a switching signal.

The Capanivo® has approvals for hazardous Locations (Dest Ex).

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