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Saravanakumar
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What are the electrical properties of standard lubrication oil (Engine oil)? Where to find? Please give the sources. I have tried my best on the internet.
So will depend on what additives are in the oil.The dielectric constant of almost all additives (especially those containing nitrogen or oxygen atoms) are larger (often 6 to 10) than the base oils stock (2.1 to 2.4).
Saravanakumar said:What are the electrical properties of standard lubrication oil (Engine oil)? Where to find? Please give the sources. I have tried my best on the internet.
Thank you for your reply. I have already checked that website. Since I am research scholar, I need data from trust ful source.CWatters said:Google found..
Some conductivity values for different oils here..
http://www.machinerylubrication.com/Read/29407/oil-condition-monitoring
Seems to vary from <10 to >2000 pico siemens per meter
http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjQjP2-8fbTAhVKJMAKHQewCRAQFggsMAA&url=http://www.dtic.mil/get-tr-doc/pdf?AD=ADA347479&usg=AFQjCNED2grM-Rzbgxme7Syzm7OgGmY13Q&sig2=73IfJmKHUi2jsbckiAbveA
So will depend on what additives are in the oil.
I am developing MEMS oil condition monitoring sensor. As a first step, I decided to make viscosity sensor. The model I have made works only in the non-conductive fluids. If lubrication oil has significant conductivity, then the design has to be changed. So I am collecting all the information about lubrication oil.Windadct said:My guess is you will not find them, if a manufacturer adds a "spec" for conductivity then they have to monitor and maintain it. There may be some "rule of thumb" values out there, but once in an engine, break down and degradation, carbon, sludge, metal flakes - all bets are off.
So this begs the question - why do you ask?
Saravanakumar said:If lubrication oil has significant conductivity, then the design has to be changed.
Saravanakumar said:I need electrical and mechanical properties of below lubrication oil:
Engine oil SAE 15W-40, SAE 10W-40, SAE 10W-60, SAE 5W-40, SAE 0W-30, SAE 30
Windadct said:...
Lastly - Engine oil is probably the last place I would expect a MEMS sensor to be effective in the real world. Engine oil "goes bad" in so many ways - moisture & coolant, sludge, metallic flakes, thermal breakdown, even fuel, or customer added additives. Look at the http://www.blackstone-labs.com/standard-analysis.php, I can not see the sensor surviving these variables, not to mention engine oil can routinely hit 125C most Silicon chips often max around 150C - and 125 is something of a design limit. . Sorry to be so negative...
Manolis said:Used engine oil will be more conductive than new oil because it will contain particles of carbon and metal plus oil oxidation products. Conductivity will increase with age.[/Q
Nidum said:Mineral oils and most of the synthetic oils are good insulators .
Their electrical properties are usually characterised by breakdown voltage and dielectric constant.
Yes, I agree with you. If we have oil(non-conductive or dielectric) between two parallel plates, oil will become a conductor above the breakdown voltage. Then now all I need to know is what is the dielectric constant range of the engine oil.
My simple question is that why no one characterises the engine oil so far?
Is experimenting the only way to know the electrical property of engine oil?
The electrical properties of standard lubrication oil (SAE) refer to its ability to conduct or resist electricity. This is important because it can affect the performance and safety of electrical systems that come into contact with the oil.
The electrical conductivity of SAE oil can be measured by using a conductivity meter. This device measures the ability of a substance to conduct electricity by passing an electrical current through it and measuring the resistance. The lower the resistance, the higher the conductivity of the oil.
The typical electrical conductivity range for SAE oil is between 0.1 to 0.001 microsiemens per centimeter (µS/cm). This range can vary depending on the type and grade of the oil, as well as its temperature and contamination level.
The viscosity of SAE oil can affect its electrical properties in several ways. Higher viscosity oils generally have lower electrical conductivity due to the larger molecular structure hindering the flow of electrons. However, some additives in SAE oil can increase its conductivity, so the relationship between viscosity and electrical properties can vary.
Monitoring the electrical properties of SAE oil is important for several reasons. It can indicate the level of contamination in the oil, as contaminants can affect its electrical conductivity. Changes in electrical properties can also signal potential issues with the oil's performance or the equipment it is being used in. Regular monitoring can help identify and prevent potential problems before they cause damage or downtime.