Related Experiment Video
Updated: May 26, 2026

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores
Published on: November 20, 2014
Development of a new dynamic gas flow-control system in the pressure range of 1 Pa-133 Pa
S S Hong1, Wakil Khan, J W Chung
1Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea. sshong@kriss.re.kr
Abstract:
A new flow-control system (FCS-705) has been developed at Korea Research Institute of Standards and Science. The system is intended for calibration of vacuum gauges in the pressure range of 1 Pa-133 Pa by comparison method. This paper describes some basic characteristics of the system including; (1) the design and construction of the system, (2) the generation of stable pressures in the chamber, (3) achieving high upstream pressure limit by installing a short duct in the by-pass pumping line, and (4) investigation of the gas flow regimes within the short duct.
Related Concept Videos
Bioreactor Controls-I
Fluid Pressure
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific weight or...
Static, Stagnation, Dynamic and Total Pressure
Turbulent Flow: Problem Solving
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Measurement of Fluid Pressure
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
Pipe Flowrate Measurement: Problem Solving

