You searched on: Author: patrick abbott
Displaying records 11 to 16.
Resort by: Date / Title
11. The Calibration of Vacuum Gauges
Patrick J Abbott
Vacuum gauges are used to measure pressures below the local atmospheric pressure. The success of many processes relies on an accurate vacuum pressure measurement, making calibration of vacuum gauges essential. This paper discusses the issues relate ...
12. The Effect of Ambient Temperature on the Sensitivity of Hot-Cathode Ionization Gauges
Patrick J Abbott, J P. Looney, Pardeep Mohan
13. An Automated Vacuum Gage Calibration System
Patrick J Abbott, M S Benner
14. Commercial helium permeation leak standards: Their properties and reliability
Patrick J Abbott, S A Tison
Standard leaks or leak artifacts are used extensively in industrial and research environments,
typically for the calibration of helium leak detectors. The most commonly used leak is the
helium permeation type, which uses a glass, quartz, or polym ...
15. Reproducibility of the Accommodation Coefficient of the Spinning Rotor Gauge
Ren Fang Chang, Patrick J Abbott
Eight spinning rotor gauges were calibrated numerous times simultaneously with the primary midrange vacuum standard at the National Institute of Standards and Technology, over a period of fifteen months to assess the reproducibility of their accommod ...
16. Supplementary Comparison APMP.M.P-S2 (Bilateral Comparison) at a Nominal Pressure of 0.05 Pa
Pardeep Mohan, Patrick J Abbott
High vacuum (10-1 to 10-4 Pa) standards are maintained by many of the world s National Metrology Institutes (NMI). For purposes of trade equity as well as scientific integrity, it is important that NMI s compare their standards and determine a degre ...