Printer Friendly

NIST-DOE CALIBRATION COOPERATION LOWERS UNCERTAINTY FOR STEP GAGE CALIBRATION.

A NIST scientist, and the staff of the Department of Energy (DOE) Oak Ridge Metrology Center have analyzed 5 years of measurements of their check standards and customer step gages and revised the error budget for the calibration. The uncertainty is length dependent, but as an example--for a full meter, the uncertainty is 0.4 [micro]m, a significant reduction from the previous 0.7 [micro]m. The reduction is primarily due to a number of small process improvements. The new uncertainty is available on most one-dimensional calibrations up to 1.5 m.
COPYRIGHT 2000 National Institute of Standards and Technology
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2000, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

 Reader Opinion

Title:

Comment:



 

Article Details
Printer friendly Cite/link Email Feedback
Publication:Journal of Research of the National Institute of Standards and Technology
Article Type:Brief Article
Geographic Code:1USA
Date:Sep 1, 2000
Words:93
Previous Article:NIST EVALUATES RADIATION ACCIDENT BIODOSIMETRY.
Next Article:NIST ANNOUNCES ACCREDITATION OF FOUR NIAP COMMON CRITERIA TESTING LABORATORIES (CCTLs) FOR IT SECURITY TESTING.
Topics:


Related Articles
Measurement system analysis and control.
NIST DEVELOPS MEASUREMENT TECHNIQUES TO VALIDATE PERFORMANCE OF HIGH-PRECISION OPTICAL CURRENT TRANSFORMER (OCT).
E-CALLBRATION SERVICE SUCCESSFULLY DEMONSTRATED BY NIST.
WANTED: MEASUREMENTS WITH GOOD REFERENCES.
Length and dimensional measurements at NIST.
The kilogram and measurements of mass and force.
The Kelvin and temperature measurements.
Statistics and measurements.
NIST mechanisms for disseminating measurements.

Terms of use | Copyright © 2014 Farlex, Inc. | Feedback | For webmasters