GB1374516A - Gas densitometer - Google Patents
Gas densitometerInfo
- Publication number
- GB1374516A GB1374516A GB1298872A GB1298872A GB1374516A GB 1374516 A GB1374516 A GB 1374516A GB 1298872 A GB1298872 A GB 1298872A GB 1298872 A GB1298872 A GB 1298872A GB 1374516 A GB1374516 A GB 1374516A
- Authority
- GB
- United Kingdom
- Prior art keywords
- quotient
- signal
- march
- mixture
- control device
- 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
- 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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (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 Analysing Materials By Optical Means (AREA)
Abstract
1374516 Gas densitometer MITSUBISHI DENKI K K 20 March 1972 [18 March 1971] 12988/72 Heading G1A In a gas densitometer for analysis of mixtures of flue gases, the mixture is put into a container 10 through which (infrared) light from a source 20 whose wave length is determined by a spectrometer 24 (or interference filter) with a control device 44 passes and the light which has passed through the mixture and not been absorbed is received by an optical detector 36 whose electrical signal is fed along with a signal from a further optical detector 34, receiving a reference beam of radiation, to a divider circuit 38 which provides an output signal proportional to their quotient which is fed via a logarithmic operational circuit to one of a plurality of memories 42a, 42b, 42c .... The control device 44 determines which memory stores the "quotient signal" for a particular wavelength and after a number of separate measurements have been made (one for each wavelength, each quotient being directed to a different memory), an analogue computer 48 is able to utilize the quotients to calculate the various densities of the various gases present by solving a set of simultaneous equations (disclosed in the description) and the results of the computation may be displayed and/or recorded on a device 50,
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1536571 | 1971-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1374516A true GB1374516A (en) | 1974-11-20 |
Family
ID=11886754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1298872A Expired GB1374516A (en) | 1971-03-18 | 1972-03-20 | Gas densitometer |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA942529A (en) |
| DE (1) | DE2213456A1 (en) |
| GB (1) | GB1374516A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2918084C3 (en) * | 1979-05-04 | 1982-04-08 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Device for determining the extinctions of components in an exhaust gas mixture |
-
1972
- 1972-03-17 CA CA137,367A patent/CA942529A/en not_active Expired
- 1972-03-20 GB GB1298872A patent/GB1374516A/en not_active Expired
- 1972-03-20 DE DE19722213456 patent/DE2213456A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2213456A1 (en) | 1972-10-12 |
| CA942529A (en) | 1974-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |