In a large food processing plant in Central America, substantial quantities of cooked tomato sauce are filled into cans every day. A process buffer tank ensures smooth operation by portioning the sauce and feeding it to the filling line. To maintain the required fill level in the tank and ensure sufficient pressure for accurate dosing, a reliable level monitoring system is used.
Precise Minimum Level Detection and Visual Status Indication for Stable Filling Processes
Vibranivo® VN 7120 in the 150 °C version as a demand limit switch for keeping the filling level constant in the filling process
The vibrating level switch functions as a demand-level detector in this application. The sensor is installed laterally in the middle section of the buffer tank. As soon as the defined minimum fill level is undershot, the system automatically triggers a refill. This ensures a stable and precisely controllable process.
The version used is designed for process temperatures of up to 150 °C (212 °F), making it ideally suited for the conditions created by the cooked tomato sauce. The vibration fork is equipped with a 64 mm extension to ensure that the sensor head is positioned far enough away from the process connection. This prevents material bridging between the tank wall and the fork.
A key feature is the bright LED status indicator, which is clearly visible from the outside. This indicator can be flexibly configured and, for this specific application, it displays a covered status using a green light.
Thanks to the Tri-Clamp hygiene adapter with flush-welded sleeve, the sensor is also ideally suited for CIP/SIP cleaning processes. The hygienic design features a 316L stainless steel housing (protection class IP69 / Type 6P), meeting the highest standards of production hygiene.
Key advantages at-a-glance
Precise demand detection in viscous media such as tomato sauce, even at high temperatures
High process reliability thanks to resistance to buildup, flow, turbulence, and air bubbles
Fast commissioning: ready for operation without material synchronisation
Robust and hygienic design: ideal for use in sensitive food processing environments
Bright status LED provides clear indication of switching status, easily visible from a distance
Maintenance-free operation without the need for calibration
The bright status LED of the Vibranivo® clearly indicates the switching status
Product insights
The compact Vibranivo® VN 7000 vibrating fork is a versatile and robust solution for precise point level detection in liquids, pasty, and viscous media.
In addition to the standard versions, a wide range of variants is available, enabling optimal adaptation to diverse process requirements — even in confined installation spaces:
Versatile configuration: VN 7 available as a compact version or with probe extension, for 100 °C and 150 °C (212 °F / 302 °F), with Tri-Clamp and various cable connections
Process temperatures up to 100 °C or 150 °C (212 °F / 302 °F)
Variable probe extensions up to 4000 mm for precise switching point positioning, even in deep or narrow installation conditions
Process connections
• Hygienic Tri-Clamp and flush-mounted welding solutions
• Threads G½", G1", ¾" NPT, 1½", etc.
Cable connections
• M12
• Valve connector
• Various cable glands
Approvals & hygiene standards
• CE, UKCA, cFMus, WHG, EHEDG (Type EL)
• Material compliance for food and pharmaceutical applications according to:
- EG 1935/2004
- FDA
- EHEDG
Discover more applications in the food industry
Whether in the processing of fruits, vegetables, nuts, flour, sugar, milk powder, spices or other food industry products – UWT offers reliable sensor solutions for a wide range of processes along the entire food and beverage value chain.
You can find all solutions at a glance in our industry brochure:
Flexible in signal – simple in configuration
The offers various output options such as PNP transistor, a contactless 2-wire version, or IO-Link. With the appropriate configuration tool, settings can be adjusted quickly and intuitively, enabling reliable integration into any control environment.
The Vibranivo® 7000 is ideally suited for demanding applications in the food and beverage, pharmaceutical, and chemical industries, thanks to its maintenance-free design, immunity to air bubbles, flow and buildup, and its instant readiness without the need for medium calibration.
Vibranivo® VN 7 with IO-Link – easily configurable using the IQ Port & Device Tool
