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Automated Piston Gauge Calibration System.



Julia Scherschligt, Yuanchao Yang, Katie M. Schlatter, Robert G. Driver, Christina D. Cross, John S. Quintavalle


Piston gauges or pressure balances are important primary standards for the realization of the SI unit of pressure, the Pascal. The National Institute of Standards and Technology (NIST) operates and maintains a calibration service for these devices, and has recently undertaken a modernization effort. Following a preliminary investigation into the feasibility of using transducers as instantaneous in-situ transfer standards, we now present the results of a near fully-automated calibration system. This effort includes the design, building, and validation of an automated gas-handling manifold, and the development of a new software suite. The new system demonstrates an expanded uncertainty on the order of 1 in 105, comparable to the traditional system, but offers a five-fold decrease in calibration turnaround time.
NCSL International Measure


Piston Gauge, Pressure Balance, Pressure Calbration


Scherschligt, J. , Yang, Y. , Schlatter, K. , Driver, R. , Cross, C. and Quintavalle, J. (2021), Automated Piston Gauge Calibration System., NCSL International Measure, [online], (Accessed July 14, 2024)


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Created April 22, 2021, Updated May 3, 2021