×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Converting viscosity - Redwood to cSt

Converting viscosity - Redwood to cSt

Converting viscosity - Redwood to cSt

(OP)
Hello,

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

Regards,

athomas236

RE: Converting viscosity - Redwood to cSt

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

RE: Converting viscosity - Redwood to cSt


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

RE: Converting viscosity - Redwood to cSt

(OP)
Gentlemen,

Thank you all, you have solved my problem.

Many thanks,

athomas236

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources