Chemicals

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Chemical Industry Special

Insight into the different level measurement devices used in chemical plants around the world.

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The ultimate Guide: When things get a little tricky!
TDR - Allrounder for Solids & Liquids

Special solutions with increased corrosion resistance of point level measurement equipment

Performance failures of level sensors cause costs to rise – not only due to the interruption of process but also when the replacement and commissioning of the devices become time-consuming.  Capacitive RF probes with full coating protection as a safe and reliable measurement solution especially in flue gas cleaning.

RF measurement in clean and contaminated acetone for synthetic fiber manufacturer producing special protective clothing and packaging solutions 

Single-rod probes using the capacitive measuring method are in many cases a clever solution when it comes to level detection. They can be found in overfill protection and as demand or empty detectors in process or storage containers. These limit switches are suitable for almost all bulk materials from different industries, due to high sensitivity, high mechanical load and the variety of probe extensions. But these qualities also make them a suitable solution in the fascinating world of varied liquid applications, be they in food, wood, rubber, plastics, environmental and power plants, building materials and chemical industries. The use of the RFnivo^® capactive rod is fully explained here within the textile production process featuring the aggressive substance of acetone. The Rotonivo^® rotary paddle switch having provided the solution for many years for the plant operator, this time the application required an alternative answer from the UWT team.

Guided wave radar technology for continuous level measurement in ethanol tanks
 

For the storage processes of ethanol of a Swedish producer the guided wave radar for continuous level determination was implemented within several tanks. When selecting a suitable measurement technology, the main focus was on reliability, durability and safety. Further high demands were placed on the robustness and flexibility in the range of applications for the measurement technology. The device to be used for the highly flammable liquid has to be certified accordingly.

Capacitance measurement solutions for chemical sector

For the manufacturing of aluminum sulfate a plant operator in Peru was looking for a compact level measurement for its raw material tanks with 98% sulfuric acid. Due to the strong corrosion caused by the acidic material, the decision was made to implement the robust capacity indicator Capanivo^® CN 7000 enclosure version for implementing reliable empty messages.

Capacitance point level detection in liquid naphthalene

Full detection with high process compatibility in chemical plant operation
The measurement technology a chemical plant was looking for in his liquid naphthalene tanks has to deal with different temperatures, varying DK values and viscosity. In order to meet these conditions in practice quickly and reliably with a clever solution, the capacitive rod probes of the RFnivo^® series from UWT were implemented.

First rotating paddle limit switch with SIL2 worldwide

The terms ‘functional safety’ and ‘safety integrity level (SIL)’ have occurred more frequently since the publication of the international standard IEC 61508/IEC61511. Particularly in systems with hazard-causing processes, such as in chemical plants, the consideration of functional safety has become indispensable. On this basis safety-related practices, design principles and error considerations must be met in order to minimize the risk of a dangerous failure.