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How to Build a Vacuum Spring-transport Package for Spinning Rotor Gauges

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Vacuum Technology Considerations For Mass Metrology.

Patrick J Abbott¹, Zeina J Jabour¹

¹Mechanical Metrology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.

Journal of Research of the National Institute of Standards and Technology

|March 19, 2016

Summary

This summary is machine-generated.

Vacuum weighing enhances mass metrology accuracy by removing air buoyancy corrections. This study reviews vacuum technology essential for reproducible mass measurements, crucial for redefining the kilogram.

Keywords:

kilogram mass vacuum

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Area of Science:

Metrology
Vacuum Technology
Mass Measurement

Background:

Air buoyancy corrections introduce uncertainty in mass artifact weighing.
Accurate mass measurement is critical for the redefinition of the SI kilogram unit.
Optimizing vacuum environments is key for precise mass metrology.

Purpose of the Study:

To review vacuum technology requirements for mass metrology.
To suggest procedures and hardware for successful vacuum weighing.
To ensure reproducible mass measurements in vacuum environments.

Main Methods:

Review of vacuum technology principles relevant to mass metrology.
Analysis of construction materials, plumbing, pumping, and pressure gauging.
Discussion of operational procedures for vacuum systems.

Main Results:

Vacuum weighing eliminates air buoyancy corrections, reducing measurement uncertainty.
Specific vacuum technologies and components are identified as critical.
Procedures for achieving optimal vacuum conditions are outlined.

Conclusions:

Effective vacuum technology is indispensable for high-accuracy mass metrology.
Careful selection of hardware and implementation of procedures ensure reproducible results.
This work supports advancements in the redefinition of the kilogram.