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Piston manometer as an absolute standard for vacuum-gage calibration in the range 2 to 500 millitorr
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Warshawsky, I. |
| Copyright Year | 1972 |
| Description | A thin disk is suspended, with very small annular clearance, in a cylindrical opening in the base plate of a calibration chamber. A continuous flow of calibration gas passes through the chamber and annular opening to a downstream high vacuum pump. The ratio of pressures on the two faces of the disk is very large, so that the upstream pressure is substantially equal to net force on the disk divided by disk area. This force is measured with a dynamometer that is calibrated in place with dead weights. A probable error of + or - (0.2 millitorr plus 0.2 percent) is attainable when downstream pressure is known to 10 percent. |
| File Size | 897180 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730002675 |
| Archival Resource Key | ark:/13960/t1zd2pm9b |
| Language | English |
| Publisher Date | 1972-11-01 |
| Access Restriction | Open |
| Subject Keyword | Manometers Pistons Dynamometers Gas Flow Calibrating Vacuum Gages Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
