JPS5510536A - Photo-acoustic analyzer - Google Patents
Photo-acoustic analyzerInfo
- Publication number
- JPS5510536A JPS5510536A JP8342678A JP8342678A JPS5510536A JP S5510536 A JPS5510536 A JP S5510536A JP 8342678 A JP8342678 A JP 8342678A JP 8342678 A JP8342678 A JP 8342678A JP S5510536 A JPS5510536 A JP S5510536A
- Authority
- JP
- Japan
- Prior art keywords
- samples
- room
- irradiation
- gas
- same
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 abstract 4
- 239000007789 gas Substances 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
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)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
PURPOSE:To secure a high-accuracy detection for the minute difference between samples by linking the reference room to the sample room in which several units of samples are provided, irradiating the same amount of optical energy to each sample alternately and then detecting the movement of the gas caused by the irradiation of the optical energy. CONSTITUTION:Samples 2 and 2' to be analyzed are put into sample room 1 with light transmission window 3 provided. Reference room 6 is linked to sample room 1 via path 7 to form a sealed container. And the gas such as the air, nitrogen is filled into the sealed container. Then optical energy B1 and B2 featuring the same wavelength and same intensity are irradiated to samples 2 and 2' in room 1 through window 3 alternately and intermittently in the same time of irradiation. The movement of the gas which is caused in path 7 by irradiation of the optical elergy is detected by thermal flow meter type detector element 8 provided in path 7. Thus the samples are analyzed simultaneously and under the same conditions to detect the minute difference between samples based on the resistance variation of the detector element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8342678A JPS5510536A (en) | 1978-07-08 | 1978-07-08 | Photo-acoustic analyzer |
| DE19792927432 DE2927432A1 (en) | 1978-07-08 | 1979-07-06 | Photo-acoustic spectrometer for solid and liq. samples - has connected gas-filled reference and sample chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8342678A JPS5510536A (en) | 1978-07-08 | 1978-07-08 | Photo-acoustic analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5510536A true JPS5510536A (en) | 1980-01-25 |
Family
ID=13802104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8342678A Pending JPS5510536A (en) | 1978-07-08 | 1978-07-08 | Photo-acoustic analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5510536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227036B1 (en) | 1998-10-28 | 2001-05-08 | The Regents Of The University Of Michigan | Multiple microphone photoacoustic leak detection and localization system and method |
-
1978
- 1978-07-08 JP JP8342678A patent/JPS5510536A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227036B1 (en) | 1998-10-28 | 2001-05-08 | The Regents Of The University Of Michigan | Multiple microphone photoacoustic leak detection and localization system and method |
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