Title :
The design of the new NIST-4 watt balance
Author :
Chao, Leon S. ; Seifert, Frank ; Cao, Austin ; Haddad, Darine ; Newell, David B. ; Schlamminger, Stephan ; Pratt, Jon R.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
The design of the new permanent-magnet driven watt balance and novel mechanical features will demonstrate the high-precision capabilities of a new watt balance mass measurement system. This article will introduce the concept of replacing the counter mass with an auxiliary mass and precision alignment of the coil using a large flexure. The system is expected to have overall uncertainties on the order of 3 parts in 108.
Keywords :
mass measurement; permanent magnets; NIST-4 watt balance; auxiliary mass; coil precision alignment; flexure; mass measurement system; permanent-magnet driven watt balance; Coils; Force; Ground penetrating radar; NIST; Radiation detectors; Superconducting magnets; Wheels; flexure; kilogram; mass; permanent magnet; watt balance;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898410
