Converting viscosity - Redwood to cSt

[athomas236]

Hello,

Does anyone know how to convert the viscosity of fuel oils in Redwood number seconds to centi-stokes?

Regards,

athomas236

 

[BigInch]

Yes. But is it Redwood (1) or (2)?
You also need the density of the product.

In any case its easiest to do it here,

http://www.processassociates.com/process/convert/..\basics\cf_vak.htm

Going the Big Inch!

http://virtualpipeline.spaces.msn.com

 

[katmar]

If you are converting between two different units of kinematic viscosity, as Redwood and centistokes are, then you do not need the density. The Process Associates calculator is "clever" enough to realize this and will ignore the density entry.

Of course if you want to convert from kinematic to dynamic (also called absolute) or vice versa then you must know the density.

Katmar Software
Engineering & Risk Analysis Software

http://katmarsoftware.com

 

[25362]

The conversions by calculators or from nomographs or tables are only approximate. At the low viscosity ranges, 10 cSt and lower, errors may be quite large. Formulas I found, based on actual measurements, are:

for Redwood #1,

cSt = 0.260 R - 179/R for 34 [≤] R [≤] 100 seconds
cSt = 0.247 R - 50/R for R > 100 seconds

for Redwood #2 (Admiralty)

cSt = 2.458 R - 100/R for 32.5 [≤] R [≤] 90 seconds
cSt = 2.447 R for R > 90 seconds

 

[athomas236]

Gentlemen,

Thank you all, you have solved my problem.

Many thanks,

athomas236