Safe storage and reliable monitoring of caustic soda in a dairy application
Smaller dairies often need effective cleaning solutions without investing in large stationary tanks. One practical approach is the use of IBC containers for disinfectants such as caustic soda (NaOH). These containers allow the medium to be diluted and directed into the CIP/SIP system to remove fat residues from pipelines. A key advantage is that the fill level can be monitored entirely contactless – directly through the plastic wall of the IBC.
Reliable measurement from the outside
To ensure safe monitoring, a stationary measuring point was set up at the IBC storage location. Here, UWT sensors track the fill level entirely from outside the tank – avoiding any contact with the caustic medium.
Benefits of IBC storage:
• Direct connection to dosing pumps without manual transfer
• A dosing station that allows safe dilution and controlled feeding
• Handling is simple : empty IBCs can be quickly exchanged and returned to the supplier
• The UN-approved design features tight screw caps and protective cages, meeting international requirements for storing and transporting corrosive media
This setup eliminates the need for large stationary tanks and provides smaller plants with a flexible, safe, space-efficient and more sustainable solution in terms of handling and resource use.
Non-contact monitoring: UWT sensors measure the IBC fill level from the outside
Continuous level measurement
The free-radiating NivoRadar® NR 7100 detecs the fill level
The a free-radiating 80 GHz FMCW radar sensor, is mounted vertically above the container. Its narrow 8° beam angle provides accurate and reliable results through the plastic tank wall.
Point level detection
The capacitive level switch Capanivo® CN 7120 measures the minimum level
For added safety, the capacitive sensor is installed externally at a low point next to the IBC. It functions as an empty detector and signals when the container needs to be replaced. Its sensitivity can be adjusted via a potentiometer, allowing the device to adapt to different liquids if required.
External installation ensures safety and flexibility
Since both sensors are mounted outside the IBC, they remain completely protected from contact with caustic soda. This design choice significantly extends service life and ensures safe operation over time. Additionally, it offers flexibility, as different cleaning or disinfecting agents can be used when replacing IBSs without reconfiguring the measurement system.
The combination of UWT radar and capacitive sensors provides a practical and reliable solution for handling aggressive media in smaller plants. External installation helps safeguard the instrumentation, while the use of standardized IBC containers makes the system both flexible and easy to manage for various cleaning and disinfecting applications.
