Based on ASTM D equation: [(v+)=(T+)] Fuel Oil data from CIMAC ; Ignition Index from BS MA (log is base 10), In the. ASTM D Standard Practice for Viscosity-Temperature Charts for Liquid Petroleum Products. standard by ASTM International, 07/01/. Scope ASTM Adjuncts: The kinematic viscosity-temperature charts (see Figs. 1 Adjunct D , Viscosity-Temperature Charts 1–73 and 2) covered by this .
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Then if you a simple excel linear plot Y vs X or log log c341 plot based on Y1 vs X1 I think you would have a straight line on your graph slope 1 on the linear plot. It should also be emphasized that fluids other than hydrocarbons will usually not plot as a straight line on these charts. These latter charts are not recommended for use where the most accurate interpolations or extrapolations are desired. The ASTM d chart uses this scale.
ASTM D / Viscosity-temperature extrapolation :: Anton Paar Wiki
We need your help to maintenance this website. By joining you are opting in to receive e-mail. I’m remembering now given two sets of T,v you can solve the constants and plot a curve in the T,v plane which is not a straight line and read off any value you want. Then to read the scale you wouldn’t look at each gridline and ast at the legend to figure out the values associated with the gridlines. And while I could download the graph Seven charts are available as follows: Red Flag This Post Please let us know here why this post is inappropriate.
The general relationship is: Draw a sharply defined straight line through them. Current edition approved Dec. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of d3411 standard.
I’m using the post above to refresh my memory.
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I am beginning to think the brute force approach is going to be needed Experimental data taken below the cloud point or temperature of crystal growth will generally not be qstm reliable repeatability for interpolation or extrapolation on the charts.
The constants A and B can be evaluated for a fluid from two data points. Please copy and paste this embed script to where asm want to embed Embed Script.
An American National Standard Designation: Adjunct DViscosity-Temperature Charts 1—73 1. The constant was allowed to vary in charts published after Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Click Here to join Eng-Tips and talk with other members! Labeling those gridlines would be the challenge.
This increases the reliability of extrapolation to higher temperatures. Reliable data can be usefully plotted in the high temperature region even if it does exhibit some curvature. Join your peers on the Internet’s largest technical engineering professional community.
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Promoting, selling, recruiting, coursework and thesis posting is forbidden. This increases the reliability of extrapolation to higher temperatures.
Download Now Defense manufacturing is all about project manufacturing and project accounting. This form can also be used to calculate the temperature associated with a desired kinematic viscosity. This test method details the asfm procedure for plotting viscosity-temperature charts that ascertain the kinematic viscosity of a petroleum oil or liquid hydrocarbon at any temperature within a limited range, provided that the kinematic viscosities at two temperatures are known.
Are you an Engineering professional? You could build a table: Download Now White Paper: Defense manufacturing is all about project manufacturing and project accounting. Thank you for interesting in our services. The kinematic viscosity and temperature atsm were not made to the same ratios in Test Method D — A superscript epsilon e indicates an editorial change since the last revision or reapproval.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.
More convenient equations5 that agree closely with the chart scale are given below. It is provided for convenience in connection with reports and data evaluation. The only problem is the axes are not v and T.