Remote-Mounted Capacitive Level Switch — 100 Q&A

II. Medium and Application 16–30

16. Can capacitive level switches detect water?

Yes. Water and many water-based liquids can be detected reliably when the sensor is correctly selected and adjusted.

17. Can they detect oil?

Yes. Capacitive level switches can be used for many oils and hydrocarbons, provided the dielectric properties are suitable.

18. Can they detect chemicals?

Yes. With appropriate probe materials and process connections, capacitive level switches can be used in chemical applications.

19. Can they detect corrosive liquids?

Yes. Corrosion-resistant probe materials and coatings can be selected for aggressive media.

20. Can they detect acids?

Potentially yes. Material compatibility must be checked against the specific acid concentration and operating temperature.

21. Can they detect alkalis?

Yes, provided that the wetted materials are compatible with the specific alkaline medium.

22. Can they detect viscous liquids?

Yes. Capacitive sensing can be suitable for viscous liquids where mechanical switches may be less suitable.

23. Can they detect conductive liquids?

Yes. Capacitive technology can detect conductive liquids, but the sensor configuration and sensitivity must be correctly selected.

24. Can they detect non-conductive liquids?

Yes. Capacitive level switches are particularly useful for detecting many non-conductive liquids.

25. Can they detect powders?

Yes. Capacitive level switches can be designed for certain bulk-solid applications.

26. Can they detect granules?

Yes. They can be used for point-level detection of many granular materials.

27. Can they detect plastic pellets?

Yes, depending on the dielectric properties and process conditions.

28. Can they detect cement powder?

A suitable capacitive probe can be used for cement and other powders, provided buildup and material characteristics are considered.

29. Can they be used for chemical tanks?

Yes. They are widely applicable to point-level alarm and control in chemical storage and process tanks.

30. Can they be used for water treatment?

Yes. Typical applications include high-level alarm, low-level alarm, pump protection, and tank level control.