|Automated Piston Gauge Calibration System
Julia Scherschligt, Christina D. Cross, John Quintavalle, Yuanchao Yang, R. Gregory Driver, Katie Schlatter, and Douglas A. Olson, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
Piston gauges or pressure balances are important primary standards for the realization of the SI unit of pressure, the
pascal. Because of their long-term stability, they are also used as secondary or working standards in the dissemination of the
pressure scale. 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.
Regular price: $20.00
Discounted member price: $15.00
Member discount: 25%