GB201118229D0 - Sensor stabilization by adjusting temperature gradient - Google Patents
Sensor stabilization by adjusting temperature gradientInfo
- Publication number
- GB201118229D0 GB201118229D0 GBGB1118229.2A GB201118229A GB201118229D0 GB 201118229 D0 GB201118229 D0 GB 201118229D0 GB 201118229 A GB201118229 A GB 201118229A GB 201118229 D0 GB201118229 D0 GB 201118229D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature gradient
- sensor array
- fluid
- detecting
- flow sensors
- 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.)
- Granted
Links
- 230000006641 stabilisation Effects 0.000 title 1
- 238000011105 stabilization Methods 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 5
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000004128 high performance liquid chromatography Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/6847—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow where sensing or heating elements are not disturbing the fluid flow, e.g. elements mounted outside the flow duct
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/696—Circuits therefor, e.g. constant-current flow meters
- G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/696—Circuits therefor, e.g. constant-current flow meters
- G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
- G01F1/699—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters by control of a separate heating or cooling element
-
- 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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/34—Control of physical parameters of the fluid carrier of fluid composition, e.g. gradient
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
A sensor array for a fluid handling system, particularly for controlling the mobile phase drive to a sample separation system such as a high performance liquid chromatography application, wherein the sensor array comprises a plurality of flow sensors 82, 84, 86 each configured for detecting data indicative of a flow of the fluid, a fluid conduit 88 in fluid communication with the plurality of flow sensors 82, 84, 86 and configured for conducting the fluid, a temperature gradient detecting unit comprising temperatures sensors 94, 96 and configured for detecting temperature gradient data indicative of a spatial temperature gradient in the sensor array, and a temperature regulating unit which activates heating units 99, 97 configured to spatially regulate temperature in the sensor array in response to the detected temperature gradient data to thereby stabilize the spatial temperature gradient over time. The flow sensors 82, 84, 86, the heating units 99, 97 and the fluidic conduits 88 may be integrated within a substrate 900.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1118229.2A GB2495777B (en) | 2011-10-21 | 2011-10-21 | Sensor stabilization by adjusting temperature gradient |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1118229.2A GB2495777B (en) | 2011-10-21 | 2011-10-21 | Sensor stabilization by adjusting temperature gradient |
Publications (3)
Publication Number | Publication Date |
---|---|
GB201118229D0 true GB201118229D0 (en) | 2011-12-07 |
GB2495777A GB2495777A (en) | 2013-04-24 |
GB2495777B GB2495777B (en) | 2018-10-31 |
Family
ID=45373245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1118229.2A Active GB2495777B (en) | 2011-10-21 | 2011-10-21 | Sensor stabilization by adjusting temperature gradient |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2495777B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH709709A1 (en) * | 2014-05-30 | 2015-11-30 | Werner Döbelin | System configuration for the injection of samples with automatic solid phase extraction with a single binary pump system to operate in the field of HPLC, ultra-, micro- and nano-HPLC. |
DE102017125818A1 (en) * | 2017-11-06 | 2019-05-09 | Alexander Bozic | System for pumping a compressible fluid |
JP7070238B2 (en) * | 2018-08-22 | 2022-05-18 | 株式会社島津製作所 | Liquid chromatograph analyzer, mobile phase feeder, liquid chromatograph analysis method and mobile phase supply method |
CN116829938A (en) * | 2021-02-04 | 2023-09-29 | 沃特世科技公司 | Thermally controlled low pressure mixing system for liquid chromatography |
GB2626601A (en) * | 2023-01-30 | 2024-07-31 | Agilent Technologies Inc | Analytical device for solvent characterisation |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5142907A (en) * | 1991-04-17 | 1992-09-01 | Mks Instruments, Inc. | Constant temperature gradient fluid mass flow transducer |
JPH102773A (en) * | 1996-06-19 | 1998-01-06 | Hitachi Ltd | Thermal air flowmeter |
US6736005B2 (en) * | 2002-05-28 | 2004-05-18 | Mcmillan Company | High accuracy measuring and control of low fluid flow rates |
GB2429785B (en) * | 2004-05-21 | 2009-11-18 | Waters Investments Ltd | Closed loop flow control of a hplc constant flow pump to enable low-flow operation |
JP4836864B2 (en) * | 2007-05-16 | 2011-12-14 | 日立オートモティブシステムズ株式会社 | Thermal flow meter |
-
2011
- 2011-10-21 GB GB1118229.2A patent/GB2495777B/en active Active
Also Published As
Publication number | Publication date |
---|---|
GB2495777A (en) | 2013-04-24 |
GB2495777B (en) | 2018-10-31 |
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