GB1239725A - - Google Patents
Info
- Publication number
- GB1239725A GB1239725A GB1239725DA GB1239725A GB 1239725 A GB1239725 A GB 1239725A GB 1239725D A GB1239725D A GB 1239725DA GB 1239725 A GB1239725 A GB 1239725A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- gas
- carrier gas
- jan
- line
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1,239,725. Pressure regulating system for gas chromatography. SIEMENS A.G. 19 Jan., 1970 [23 Jan., 1969], No. 2562/70. Heading B1L. To ensure true readings from a mass-sensitive detector D, e.g. a flame ionization detector, the necessary supplementary amount of carrier gas is introduced by valve R and line Z into the gas chromatography column effluent stream of carrier gas T and sample component S so as to maintain a constant pressure at a point upstream of throttling means DS. In another embodiment (see Fig. 2, not shown), the supplementary stream of carrier gas is introduced into line Z at a point between valve R and junction A, the excess amount of gas being controlled by valve R, through which it exhausts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691903353 DE1903353A1 (en) | 1969-01-23 | 1969-01-23 | Detector arrangement, especially for chromatography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1239725A true GB1239725A (en) | 1971-07-21 |
Family
ID=5723231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1239725D Expired GB1239725A (en) | 1969-01-23 | 1970-01-19 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE744874A (en) |
| DE (1) | DE1903353A1 (en) |
| FR (1) | FR2028952A1 (en) |
| GB (1) | GB1239725A (en) |
| LU (1) | LU60213A1 (en) |
| NL (1) | NL7000526A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3840322A1 (en) * | 1988-11-30 | 1990-05-31 | Hartmann & Braun Ag | DEVICE FOR MONITORING THE GAS FLOW IN A GAS ANALYZER AND FOR CORRECTING PRESSURE AND FLOW-RELATED INFLUENCES ON ITS MEASURING SIGNAL |
| US5108466A (en) * | 1990-12-21 | 1992-04-28 | Hewlett-Packard Company | Apparatus and methods for controlling fluids provided to a chromatographic detector |
| DE19958441C2 (en) * | 1999-12-03 | 2002-03-14 | Siemens Ag | Method and device for measuring gas constituents |
-
1969
- 1969-01-23 DE DE19691903353 patent/DE1903353A1/en active Pending
-
1970
- 1970-01-14 NL NL7000526A patent/NL7000526A/xx unknown
- 1970-01-19 GB GB1239725D patent/GB1239725A/en not_active Expired
- 1970-01-21 LU LU60213D patent/LU60213A1/xx unknown
- 1970-01-21 FR FR7002117A patent/FR2028952A1/fr not_active Withdrawn
- 1970-01-23 BE BE744874D patent/BE744874A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1903353A1 (en) | 1970-07-30 |
| LU60213A1 (en) | 1970-03-23 |
| NL7000526A (en) | 1970-07-27 |
| BE744874A (en) | 1970-07-23 |
| FR2028952A1 (en) | 1970-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES403204A1 (en) | Continuous flow anesthesia apparatus | |
| GB1274488A (en) | Flow control for gas analyzing apparatus | |
| GB1254684A (en) | Chromatographic peak selector | |
| GB1091899A (en) | Method and apparatus for determining physical properties of gases | |
| GB1288513A (en) | ||
| GB1292105A (en) | Jet entrainment control for a fluidic device | |
| GB1319160A (en) | Gas flow measuring apparatus | |
| GB1239725A (en) | ||
| CA971771A (en) | Gas flow control system for an analytical instrument | |
| ES450978A1 (en) | Control system for an absorption column | |
| FR1350705A (en) | Compensating system for gas flow meters | |
| GB1291724A (en) | Improvements in or relating to apparatus for determining the presence of substances carried by a stream of carrier fluid | |
| GB1126954A (en) | Flow rate measuring device | |
| GB1067192A (en) | Improvements in or relating to gas stream distributors | |
| GB1057120A (en) | An arrangement for setting and keeping constant the mass flow of gases | |
| GB1385595A (en) | Method and apparatus for pressure and flow measurement | |
| GB1161154A (en) | Improvements in or relating to Gas Chromatography. | |
| GB1032609A (en) | Improvements in or relating to ionizing radiation measuring apparatus | |
| GB1285939A (en) | Improvements relating to stabilising strip material travelling in a lengthwise direction | |
| GB1257461A (en) | ||
| JPS526596A (en) | Detector for gas chromatograph | |
| JPS5246297A (en) | Radioactive gas monitor | |
| GB1128908A (en) | Method and means for measuring the rate of flow of gases in pipes | |
| ES340343A1 (en) | Burner device. (Machine-translation by Google Translate, not legally binding) | |
| GB1152013A (en) | Improvements in Method and Apparatus for Determining the Volumetric Mass or Density of a Gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |