Measyrement of Conductivity and Dielectric constant

AI Thread Summary
Measuring the conductivity and dielectric constant of silicone oil and castor oil presents challenges due to the high resistivity of silicone oil, making it difficult to obtain accurate readings with standard conductivity meters. High sensitivity conductivity meters are recommended for these measurements, especially since the current involved is minimal. It is crucial to note that both oils act as dielectrics, meaning that below their breakdown voltage, no conduction occurs, complicating resistivity measurements. Accurate conductivity readings require a high power resistance meter to ensure current flow above the breakdown voltage. Clarification on the specific application is necessary for more tailored advice.
pururaj
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can you please tell me, how do we measures the conductivity and dielectric constant of silicone oil and castor oil, because resistivity of silicone oil is very high so that's why it is difficult to mesure with conductivity meter,
 
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You use high sensitivity conductivity meter.
 


Please tell me more specifically, which one is best for us because cureent is so small.
 
Sorry, but your question is so vague and general that it is impossible to give a reasonably accurate answer, especially not knowing in what context you are asking.
 
Because both of these substances are dielectrics, you will have zero conduction below the breakdown voltage for the insulator. Measurements of resistivity can only be made in the material if current is flowing, so you would have to use a high power resistance meter to measure conductivity above the breakdown voltage. as long as you are below the permittivity voltage, current should not flow.

Can you please clarify the specific application?
 
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