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Fuels, Lubricants and Materials Testing Equipment

March 2009

Volume 2, Number 2

In This Issue

·         Did you know . . .

·         ASTM D6617 Laboratory Bias Detection

·         ASTM D975 Revision

·         Waukesha FIT

·         Application Note: Calculation of Slow Speed Wear of Lubricated Gears using the FZG

·         The future of LPG Vapor Pressure Testing

·         Calendar

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Did you know. . .

. . . that Compass Instruments offers training on all of its equipment.
If you have had personnel changes, or even if you just want a refresher, we can help with your training needs on PCS HFRR’s, CFR Engine Maintenance, or Falex softWEAR just to name a few.  We train you on the instruments and, more importantly, the test methods.

. . . that we have updated our CFR Classes and CFR Bulletins?

Check it all out on our News page here!

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. . . that Petroleum System Services Corporation (PSSC) is a factory-trained calibration facility for the eralytics ERAVAPs in North America?

. . . that Compass Instruments has a new lower price for the ASTM D6079 HFRR Test Specimens (#HFRSSP)?



. . . that all of the Compass Instruments Newsletters are online at out Newsletter Library?
Check out the past issues here.

Information You Can Use


Did you know that ASTM D6617 Standard Practice for Laboratory Bias Detection Using Single Test Result from Standard Material allows you to determine an acceptable tolerance zone and demonstrate if your laboratory is performing a test method without bias?

Check it out today or

ASTM D02 has revised ASTM D975, Standard Specification for Diesel Fuel Oils based on the activity from last semester.  The latest issue is D975-09 to be electronically published after final proofing.  It will most likely be electronically published this month.

One major modification is the addition of D7170 Determination of Derived Cetane Number (DCN) of Diesel Fuel Oils—Fixed Range Injection Period, Constant Volume Combustion Chamber Method as an alternate method to ASTM D613.

Waukesha FIT –

the world’s simplest DCN

FIT LogoFIT Front Hi Left - LowRes.jpg

With the inclusion of ASTM D7170 into ASTM D975, we’d like to take this opportunity to introduce you to the World’s Simplest DCN unit.
It’s simplicity itself with virtually no hands-on manipulation of the instruments.

1.     Pour in your sample

2.     Click Run

3.     and out comes the answer.

Only the spacing-saving compact bench top Waukesha FIT unit has unmatched precision with no bias and no carry over effects from previous samples.

Application Note – Strama-MPS FZG

Calculation of Slow Speed Wear of Lubricated Gears

This Technical Paper is available from Compass Instruments and Strama-MPS.  It was written by H. Winter and presented by J. Plewe at the AGMA Fall Meeting, October 11-13, 1982.


On gear drives running with pitch line velocities below 0.5 m/s, so called slow speed wear is often observed.  To solve some problems, extensive laboratory test work was started 10 years ago. A total of circ. 300,000 h running time on FZG –back-to-back test rigs have been run in this speed range.  The test results showed a correlation between calculated EHL Film thickness and a wear coefficient.  Based on these experimental results and some wear data of different size industrial gear drives, a method for calculating slow speed wear was derived and is presented in this paper.


To calculate the service life of slow speed gears, the limits of wear for different modes of failure are discussed.  Design guides to increase slow speed wear load capacity are presented.




eralytics™ ERAVAP EV02

 – the future is now!

MCj01051880000[1]Four Ball EP 1a.JPG

eralytics GmbH and Compass Instruments are pleased to announce the immediate availability of the NEW EV02 for LPG vapor pressure testing by ASTM D6897.

With the addition of the EV02 to your lab, you can run LPG VP and gasoline D5191/D6378 RVP on the same instrument.

Why settle for the same old interface and limited functionality when you can have the future now.



Pittcon (Booth 2809)



Chicago, IL                        McCormick Place

March 8 - 13

March 9 - 11


STLE (Booth 310)




Lake Buena Vista, FL
                   Disney's Coronado Springs Resort

May 18 - 21

May 18 – 20


ASTM D02 Petroleum Products and Lubricants

(in conjunction with D01, D03, D16, G02 and G03)

Norfolk, VA        Norfolk Marriott Waterside


Gulf Coast Conference

            Gulf Golf:


Galveston, TX

October 12               Moody Gardens Golf Course

October 13 - 14           Moody Gardens Conv. Ctr.

This Newsletter is Copyright 2009, Compass Instruments, Inc.  All rights reserved.

No portion of this Newsletter may reproduced in any fashion whatsoever without the express written permission of Compass Instruments, Inc.

All trademarks and trade names are the marks of the respective owner(s) and any unauthorized use is prohibited.



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