Berg, R.
and Cignolo, G.
(2003),
NIST-IMGC Comparison of Gas Flows Below 1 Liter per Minute, Metrologia, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=830791
(Accessed May 9, 2025)
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.
NIST-IMGC Comparison of Gas Flows Below 1 Liter per Minute
Published
Author(s)
, G Cignolo
Abstract
We compared the IMGC and NIST standards for small gas flows at the IMGC. The IMGC standard is a recently developed primary flow meter that extracts a large piston out of a temperature-controlled chamber. Controlling the piston's speed holds the pressure in the chamber constant. The NIST standard is a recently developed transfer standard that was calibrated against two primary standards at NIST. The first NIST primary extracts a large piston out of an oil-filled chamber in which a metal bellows is suspended. Controlling the piston's speed holds the pressure in the bellows constant. The second NIST primary is a static gravimetry method. The results include 49 nitrogen flow rates from 0.22 to 660 micromol/s = 1.3443 cm^3/min of an ideal gas at the standard conditions of 0 C and 101325 Pa.) For all but one of the comparisons, the agreement between IMGC and NIST is better than 0.06%.Citation
Metrologia
Volume
40
Pub Type
Journals
Download Paper
Keywords
comparison, gas flow, transfer standard
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.
Created June 13, 2003, Updated February 17, 2017