FR2034375A1 - - Google Patents
Info
- Publication number
- FR2034375A1 FR2034375A1 FR6908349A FR6908349A FR2034375A1 FR 2034375 A1 FR2034375 A1 FR 2034375A1 FR 6908349 A FR6908349 A FR 6908349A FR 6908349 A FR6908349 A FR 6908349A FR 2034375 A1 FR2034375 A1 FR 2034375A1
- Authority
- FR
- France
- 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.)
- Withdrawn
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
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/81—Indicating humidity
-
- 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
- G01N21/251—Colorimeters; Construction thereof
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US807214A US3538770A (en) | 1969-03-14 | 1969-03-14 | Humidity meters |
FR6908349A FR2034375A1 (fr) | 1969-03-14 | 1969-03-21 | |
DE19691915308 DE1915308A1 (de) | 1969-03-14 | 1969-03-21 | Feuchtigkeitsmesser |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80721469A | 1969-03-14 | 1969-03-14 | |
FR6908349A FR2034375A1 (fr) | 1969-03-14 | 1969-03-21 | |
DE19691915308 DE1915308A1 (de) | 1969-03-14 | 1969-03-21 | Feuchtigkeitsmesser |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2034375A1 true FR2034375A1 (fr) | 1970-12-11 |
Family
ID=27181852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR6908349A Withdrawn FR2034375A1 (fr) | 1969-03-14 | 1969-03-21 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3538770A (fr) |
DE (1) | DE1915308A1 (fr) |
FR (1) | FR2034375A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE7905269L (sv) * | 1979-06-15 | 1980-12-16 | Tecator Instr Ab | Sett och apparat for bestemning av vattenhalt, serskilt i livsmedel |
DE3265215D1 (en) * | 1981-06-03 | 1985-09-12 | Nat Nuclear Corp Ltd | Determination of heat transfer from a surface |
DE4008486A1 (de) * | 1990-03-16 | 1991-09-19 | Bellino Metallwerke | Feuchtigkeitssensor zum ermitteln eines geringfuegigen wassergehaltes, vorzugsweise im ppm-bereich, in einem kaeltemittel |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2109235A (en) * | 1938-02-22 | Radiation | ||
US2460065A (en) * | 1945-02-07 | 1949-01-25 | Davison Chemical Corp | Cobalt sulfate relative humidity indicators |
US2526938A (en) * | 1946-09-11 | 1950-10-24 | Davison Chemical Corp | Moisture indicator |
US3044288A (en) * | 1960-11-29 | 1962-07-17 | Dwight L Randall | Humidiometer hydrogen tube analyzer |
US3166928A (en) * | 1961-06-28 | 1965-01-26 | Justin M Jackson | Electrical automatic dew point hygrometer |
US3412599A (en) * | 1966-05-16 | 1968-11-26 | Gen Dynamics Corp | Spectral attenuation hygrometer |
-
1969
- 1969-03-14 US US807214A patent/US3538770A/en not_active Expired - Lifetime
- 1969-03-21 DE DE19691915308 patent/DE1915308A1/de active Pending
- 1969-03-21 FR FR6908349A patent/FR2034375A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE1915308A1 (de) | 1970-10-08 |
US3538770A (en) | 1970-11-10 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |