SU564553A1 - Method for dymamic calibration of low pressure gauges - Google Patents
Method for dymamic calibration of low pressure gaugesInfo
- Publication number
- SU564553A1 SU564553A1 SU7602335266A SU2335266A SU564553A1 SU 564553 A1 SU564553 A1 SU 564553A1 SU 7602335266 A SU7602335266 A SU 7602335266A SU 2335266 A SU2335266 A SU 2335266A SU 564553 A1 SU564553 A1 SU 564553A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- calibration
- low pressure
- pressure
- dymamic
- pressure gauges
- Prior art date
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Description
(54) СПСХЗОБ ДИНАМИЧЕСКОЙ ГРАДУИРОВКИ МАНОМЕТРОВ НИЗКОГО ДАВЛЕНИЯ(54) SAFE SPEAKING DYNAMIC GRADUATION OF LOW PRESSURE MANOMETERS
Изобретение относитс к области приборостроени , в частности к способам дл определени метрологических характерисик манометров.The invention relates to the field of instrumentation, in particular to methods for determining the metrological characteristics of pressure gauges.
Известен способ динамической грйдуи- g ровки манометров низкого давлени , основанный: на расчётном понижении давлени , происход щем при молекул рном течении газа через отверсти известной проводимости ij,There is a known method of dynamic pressure ging of low pressure manometers, based on: the calculated pressure drop occurring during the molecular flow of gas through apertures of known conductivity ij,
Известньй способ не обеспечш ет дос ю таточной точности градуировки.The well-known method does not provide sufficient accuracy of calibration.
Известен также способ динамической градуировки манометров низкого давлени путем расчётного повышени давлени в граду ИР овочной камере известного объема 15 во времени, происход щего при непрерывной подаче газа в камеру через диафрагму известной проводимости на соседней 1(;амеры с из у1ер емым более высоким давлением i: JT Недостатком способа вл етс 20 низка точность градуировки, обусловленна раличием неучитываемых побочных газовых процессов в градуировочной камере таких, как газовыделение со стенок камеры или внутри градуируемого манометра, в особен- 25There is also known a method of dynamic calibration of low pressure gauges by calculating the pressure increase in a turbine of a known chamber of volume 15 over time, which occurs when gas is continuously fed into the chamber through a diaphragm of known conductivity at an adjacent 1 (; JT The disadvantage of this method is 20 low precision of calibration, due to the difference in non-considered side gas processes in the calibration chamber, such as gas evolution from the chamber walls or inside graduated a pressure gauge, in the singularity 25
. ностн при высоком k сверхвысоком ваку .ме.. Nostn at high k ultrahigh vac.
Цель изобретени - повышение точностте градуирсеки.The purpose of the invention is to improve the accuracy of gradirseks.
Это достигаетс тем, что после расчётного повышени давлени в градунровочной камере известного объема, происход щего при непрерывной подаче газа в градуирсвочную камеру через;диафрагму известной проводимости из камеры с более высоким давлением по окончании повышени давлени измер ют установившеес высокое давление в градуировочной камере, затем, откачива её через другую диафрагму известной проводимости, понижают в ней давление. При этом измер ют промежутки времени, соответствующие двум одинаковым показани м градуируемого манометра при повышении и при понижении давлени , и по известным зависимост м определ ют давление в градуир ОБ очной камере, соответствующее пс саза- ни м манометра.This is achieved by the fact that, after a calculated pressure increase in the graduating chamber of a known volume occurring with a continuous supply of gas to the graduation chamber through; a diaphragm of known conductivity from the higher pressure chamber, the graduated high pressure in the calibration chamber is measured, then pumping it through another diaphragm of known conductivity, lowering the pressure in it. In this case, the time intervals corresponding to two identical indications of the calibrated manometer with increasing and decreasing pressure are measured, and the pressure in the graduated gauge of the internal chamber, corresponding to the pressure gauge's value, is determined by known dependencies.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7602335266A SU564553A1 (en) | 1976-03-16 | 1976-03-16 | Method for dymamic calibration of low pressure gauges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7602335266A SU564553A1 (en) | 1976-03-16 | 1976-03-16 | Method for dymamic calibration of low pressure gauges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU564553A1 true SU564553A1 (en) | 1977-07-05 |
Family
ID=20652530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU7602335266A SU564553A1 (en) | 1976-03-16 | 1976-03-16 | Method for dymamic calibration of low pressure gauges |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU564553A1 (en) |
-
1976
- 1976-03-16 SU SU7602335266A patent/SU564553A1/en active
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