Capacitance type level switches

[fhanjum]

any one can confirm....can we use capacitance type level switches in oil tank, oil is collected from oily water system

[barryn56]

Capacitance depends on permittivity and water is very high (40) while oil and gas is low (around 1 or so). If your probe gets coated with one fluid or the other, it may not be reliable. A float switch is very easy to implement and relies on density difference, which is usually more reliable.

[cytech]

Hi fhanjum,

You may consult your local vendors, to have better design.

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Regards
Cy