Hi All!
I want to introduce oil analysis program in my organization. To start with I want viscosity measurement done of gearbox used oil on site.

I would like to know which instrument shall I use rotary, capillary? Which is more appropriate measurement Kinematic or dynamic? If I measure dynamic viscosity, can I get sp. gravity of used oil?

Can somebody please help?

I think kinematic viscosity measurement using a capilary viscometer will help you much.

Kinematic Viscosity = Dynamic Viscosity/Density

This is the actual relation between these two.

Thank You Mr. Menon!
But my doubt is if I measure dynamic viscosity , it wont give correct kinematic vis. since sp. gravity of used oil will not remain same as when it was new giving incorrect kinematic vis.

Please clarify!

Hi,
I understand you are interested in extending your drained oil life and adopt condition monitoring systems, only visocity of oil is not critical , you must also check the same for viscosity @ 40 & 100 , TAN - TBN , Water content , Partical Count to start with.

There are professonal service providers for the same.

As for your question to start with if you want to get an aproximate idea - then there are spot analysis kits available , if your application is really critical then you got to set up a small lab at your plant for above tests. For Viscosity @ 40 & 100 most of our customers are happy using KV Bath ( as per ASTM test method )

You must budget - for atlest 4 - 4.5 lacs for the same.

Thank You for reply!
I am aware that for complete oil analysis water content, particle counter etc are very important.But I feel without much investment at the start the most imp thing to measure is viscosity. Would like to know how much viscometer shall cost.

Thank You

Mr.Seemant,

Where is your location in India.my email address is nnkrishnakumar_menon@rediffmail.com
Please put your mail address in the forum.

I am in Vadodara (Guj) e mail id jseemant@yahoo.co.in.

Thanks