GB1392904A - Gas flow monitoring - Google Patents
Gas flow monitoringInfo
- Publication number
- GB1392904A GB1392904A GB470273A GB470273A GB1392904A GB 1392904 A GB1392904 A GB 1392904A GB 470273 A GB470273 A GB 470273A GB 470273 A GB470273 A GB 470273A GB 1392904 A GB1392904 A GB 1392904A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- concentration
- rate
- flow
- gas stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000012544 monitoring process Methods 0.000 title abstract 3
- 239000007789 gas Substances 0.000 abstract 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 3
- 229910052760 oxygen Inorganic materials 0.000 abstract 3
- 239000001301 oxygen Substances 0.000 abstract 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Measuring devices for evaluating the respiratory organs
- A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Measuring devices for evaluating the respiratory organs
- A61B5/0813—Measurement of pulmonary parameters by tracers, e.g. radioactive tracers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Measuring devices for evaluating the respiratory organs
- A61B5/087—Measuring breath flow
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pulmonology (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physiology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Emergency Medicine (AREA)
- Obesity (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Accessories For Mixers (AREA)
Abstract
1392904 Measuring gas flow-rate concentration electrically SIEMENS AG 30 Jan 1973 [31 Jan 1972] 4702/73 Heading G1N Gas flow monitoring apparatus comprises a mixing vessel 3 provided with a pump 9 causing the gas of a first gas stream that is to be monitored and the gas of a second gas stream of substantially constant predetermined composition, to enter the mixing vessel in such a manner that the combined volumetric rate of flow VG of the gases into and out of the vessel is maintained at a constant known value throughout a given monitoring period despite variations in the volumetric flow-rate V(t) of the monitored gas stream and further comprising a flowmeter 6 connected to provide a measure of the instantaneous volumetric flow-rate VE(t) of the second gas stream, and a concentration meter 10 connected to provide a measure of the concentration of a particular gas e.g. oxygen in the gas flow from the vessel. Alternatively the flowmeter may measure the instantaneous volumetric flowrate V(t) of the first gas stream; or the concentration meter may measure carbon dioxide or there may be two concentration meters one for each gas. A computer circuit indicates at 15 mean volumetric flow-rate of oxygen (or CO 2 ) in the duct 2 and instrument 18 indicates mean oxygen (or CO 2 ) concentration in the duct 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722204473 DE2204473C3 (en) | 1972-01-31 | 1972-01-31 | Device for determining temporal mean values of the current and / or the concentration of gas components in a measurement gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1392904A true GB1392904A (en) | 1975-05-07 |
Family
ID=5834573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB470273A Expired GB1392904A (en) | 1972-01-31 | 1973-01-30 | Gas flow monitoring |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT330947B (en) |
| CH (1) | CH549202A (en) |
| DE (1) | DE2204473C3 (en) |
| FR (1) | FR2170008A1 (en) |
| GB (1) | GB1392904A (en) |
| NL (1) | NL7215741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629952A (en) * | 2020-12-17 | 2021-04-09 | 北京雪迪龙科技股份有限公司 | Device and method for uniformly mixing sampling spots of particulate matter monitor by beta-ray method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178919A (en) * | 1978-04-03 | 1979-12-18 | The Perkin-Elmer Corporation | Flowmeter for providing synchronized flow data and respiratory gas samples to a medical mass spectrometer |
| FR2443826A1 (en) * | 1978-12-14 | 1980-07-11 | Gauthier Ets | Measurement of patient's oxygen consumption rate - includes addition of measured quantity of pure oxygen to expired air to restore normal level in mixture |
| FI78231C (en) * | 1984-11-21 | 1989-07-10 | Instrumentarium Oy | Measuring device for metabolic quantities connectable to a respirator |
| DE4216623C2 (en) * | 1992-05-20 | 1996-02-29 | Thomas Dipl Ing Zimmerling | Device for measuring condensate |
-
1972
- 1972-01-31 DE DE19722204473 patent/DE2204473C3/en not_active Expired
- 1972-10-20 CH CH1541072A patent/CH549202A/en not_active IP Right Cessation
- 1972-11-17 AT AT979372A patent/AT330947B/en not_active IP Right Cessation
- 1972-11-21 NL NL7215741A patent/NL7215741A/xx not_active Application Discontinuation
-
1973
- 1973-01-30 GB GB470273A patent/GB1392904A/en not_active Expired
- 1973-01-30 FR FR7303185A patent/FR2170008A1/fr not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629952A (en) * | 2020-12-17 | 2021-04-09 | 北京雪迪龙科技股份有限公司 | Device and method for uniformly mixing sampling spots of particulate matter monitor by beta-ray method |
Also Published As
| Publication number | Publication date |
|---|---|
| CH549202A (en) | 1974-05-15 |
| FR2170008A1 (en) | 1973-09-14 |
| ATA979372A (en) | 1975-10-15 |
| DE2204473C3 (en) | 1979-04-05 |
| NL7215741A (en) | 1973-08-02 |
| AT330947B (en) | 1976-07-26 |
| DE2204473A1 (en) | 1973-08-16 |
| DE2204473B2 (en) | 1978-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |