Drop counter and flow meter for apparatus and method for determining the thermal stability of fluids
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United States of America Patent
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Oct 2, 2012
Grant Date -
Jan 19, 2012
app pub date -
Aug 4, 2010
filing date -
Jul 16, 2010
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Abstract
A thermal oxidation tester is shown for determining thermal stability of a fluid, particularly hydrocarbons when subjected to elevated temperatures. The tendency of the heated fluid to oxidize and (1) form deposits on a surface of a heater tube and (2) form solids therein, are both measured at a given flow rate, temperature and time. The measured results are used to determine whether a fluid sample passes or fails the test. Sample flow rate is important in the jet fuel thermal oxidation test. Current practice requires manual drop counting or flow confirmation with the use of volumetric glassware. An apparatus is described to precisely measure the flow rate and automatically perform flow rate check using a drip rate method and/or volumetric method.
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