Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Functional Constraints and the Design of a New Watt Balance

Published

Author(s)

Leon S. Chao, Stephan Schlamminger, Jon R. Pratt

Abstract

The functional constraints driving the design of the new permanent-magnet driven watt balance (NIST-4) outline the variables and compromises worthy of addressing. Construction according to these design parameters will demonstrate the high precision capabilities of a large complex mass measurement system with overall uncertainties on the order of 3 parts in 108.
Proceedings Title
ASPE Annual Meeting Proceedings
Conference Dates
October 21-25, 2013
Conference Location
St. Paul, MN
Conference Title
ASPE Annual Meeting

Keywords

watt balance, mass, kilogram, wheel, flexure, SI unit, redefine, magnet

Citation

Chao, L. , Schlamminger, S. and Pratt, J. (2013), Functional Constraints and the Design of a New Watt Balance, ASPE Annual Meeting Proceedings, St. Paul, MN, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914462 (Accessed October 22, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created September 30, 2013, Updated February 19, 2017
Was this page helpful?