Selection of capillaries for the kinematic viscosity of oils
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This post was last edited by zjp on 2012-9-23 17:45. What are the rules for selecting capillaries for measuring the dynamic viscosity of oils?
When measuring the dynamic viscosity of the sample, an appropriate viscometer should be selected based on the test temperature, ensuring that the flow time of the sample is not less than 200 seconds; for viscometers with an inner diameter of 0.4 mm, the flow time should be not less than 350 seconds.
During the sampling process, the capillary must remain vertical and no bubbles should be present in the oil sample taken. The temperature of the constant-temperature water bath should be maintained within a range of plus or minus 0.1 degrees Celsius. After use, the capillary should be cleaned with gasoline or carbon tetrachloride; it is absolutely forbidden to clean it with water.
Looking at this table might help you.
It’s your watch; you need to upload the watch.
It appeared after refreshing the table a few more times
I refreshed it N times, but I still didn’t see any tables...
It depends on what kind of oil you’re using; if it’s heavy oil, then its density also matters. The minimum density should be no less than 200 s, while the maximum should not exceed 1000 s