ISO cup - ISO 2431

Posted by(ÀÛ¼ºÇϽŠºÐ) MaxMet Inc. ( August 09, 2000 at 17:19:06: )

Dear Colleague,

ISO cup has four classes as follows,

Outer dia. (upper) : 86 mm including the weir
Outer dia. (cylinder stem) : 56 mm
length of orifice(see picture) : 20 mm

Orifice diameters (4 different species according to the orifice diameter)

3 mm cup, 4 mm cup, 5 mm cup and 6 mm cup

The calibration equations are as follows,

[3 mm cup] v= 0.443 t -( 200 / t )
[4 mm cup] v = 1.37 t - ( 200 / t )
[5 mm cup ] v = 3.28 t - ( 220 / t )
[6 mm cup ] v = 6.90 t - ( 570 / t )

v : kniematic viscosity in mm^2/s, or cSt
t : flow time , seconds
________________________

In details you can also consult the follwoing documents,

ISO 2431(93), BS EN ISO 2431(96)

I hope this will help you and your project. If you have any other questions
please do not hesitate to contact me. Good luck.

Best Regards,

C. H. Kim

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