Skip to main content

Read our primer articles on Oil Analysis and Tribology

Understand that ASTM D92- Clevland Open Cup Method (COC)test method for flash point. It's the most important for used oil analysis. But it doesn't work this time and fail to get the result. the test equipment is function for others very well. What kind of condition that it fail to get the result? it's because of too much water content? Hope somebody can find out the solution. Thanks.
Original Post

Replies sorted oldest to newest

David - what kind of instrument are you using? Does it use a flame or glow-plug type ignition? How is the flash observed, human eye or ionization ring?

Regardless whether the test is being run manually or automatically, what are you seeing (or not seeing) now that is different from when the test was operating properly? (Beyond just "it used to work, now it doesn't.)

Excess water will just hang around at the bottom or in emulsion and have little effect unless the flash point is >100C. At that point you will have a memorable experience...
quote:
Originally posted by Lamont B Dumont:

...Excess water will just hang around at the bottom or in emulsion and have little effect unless the flash point is >100C. At that point you will have a memorable experience...


LOL

Is it possible that you can dessicate the sample? 60 C for 3 days would be a nice treatment, however, you must bear in mind that it might interfere with some components of your lubricant. Centrifugation, perhaps, and then repeat the COC assay. And if it is salt water, i dont think that remaining salts, if any, interfere with the test.
quote:
Originally posted by Ing. Damian:
Hello, I'm an electrical engeneer. And I'm working with trnasfomers, and i was hopeing someone could helpe me by describing this tet you are talking about, or giv me some kind of web page to find it, all i could find wuere paid ones... Cuz we work a lot with insulating oils in switchs and transformers.


Damian,
Through this link (http://www.google.com/search?q=flash+point+test&btnG=Search&hl=en&rls=com.microsoft%3Aen-US&sa=2) you can find more info than you want to know about Flash Point measurements.
Post
attend Reliable Plant 2024
×
×
×
×
Link copied to your clipboard.
×