FR2377035B1 - - Google Patents
Info
- Publication number
- FR2377035B1 FR2377035B1 FR7800533A FR7800533A FR2377035B1 FR 2377035 B1 FR2377035 B1 FR 2377035B1 FR 7800533 A FR7800533 A FR 7800533A FR 7800533 A FR7800533 A FR 7800533A FR 2377035 B1 FR2377035 B1 FR 2377035B1
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
- G01N27/123—Circuits particularly adapted therefor, e.g. linearising circuits for controlling the temperature
- G01N27/124—Circuits particularly adapted therefor, e.g. linearising circuits for controlling the temperature varying the temperature, e.g. in a cyclic manner
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth 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 Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB779/77A GB1557921A (en) | 1977-01-10 | 1977-01-10 | Gas monitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2377035A1 FR2377035A1 (fr) | 1978-08-04 |
| FR2377035B1 true FR2377035B1 (US06653308-20031125-C00199.png) | 1983-04-08 |
Family
ID=9710373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7800533A Granted FR2377035A1 (fr) | 1977-01-10 | 1978-01-10 | Detecteur de gaz du type a semi-conducteur chauffe |
Country Status (7)
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3019387C2 (de) * | 1980-05-21 | 1986-01-23 | Siemens AG, 1000 Berlin und 8000 München | Dünnschicht-Halbleiter-Gassensor mit einem in den Sensoraufbau integrierten Heizelement |
| US4351181A (en) * | 1980-10-17 | 1982-09-28 | Currans James H | Linear, gas to voltage transducer circuit |
| US4458242A (en) * | 1980-10-25 | 1984-07-03 | Matsushita Electric Works, Ltd. | Gas detector |
| US4327361A (en) * | 1980-11-06 | 1982-04-27 | The United States Of America As Represented By The Secretary Of The Army | Gas sensor |
| US4502321A (en) * | 1981-02-27 | 1985-03-05 | Capital Controls | Apparatus and method for measuring the concentration of gases |
| US4352087A (en) * | 1981-04-22 | 1982-09-28 | Marie C. Kercheval | Fume detector and alarm system |
| EP0075101A3 (de) * | 1981-09-22 | 1985-12-04 | Cerberus Ag | Verfahren und Vorrichtung zur Reduzierung von durch Störgase hervorgerufenen Falschalarmen in Gaswarnanlagen |
| US4691979A (en) * | 1983-08-04 | 1987-09-08 | Manda R & D | Compliant press-fit electrical contact |
| DE3435874A1 (de) * | 1984-09-29 | 1986-04-03 | Horst Dipl.-Ing. 2000 Hamburg Krauleidies | Verfahren und anordnung zur ueberwachung der fremdgaskonzentration in einem gasfoermigen traegermedium |
| JPS6244252U (US06653308-20031125-C00199.png) * | 1985-09-04 | 1987-03-17 | ||
| US4785658A (en) * | 1985-12-02 | 1988-11-22 | John Jackson | Method and apparatus for sensing hydrocarbon gases |
| US4896143A (en) * | 1987-04-24 | 1990-01-23 | Quantum Group, Inc. | Gas concentration sensor with dose monitoring |
| US4918974A (en) * | 1989-02-06 | 1990-04-24 | Alcan International Limited | Method and apparatus for the measurement of the thermal conductivity of gases |
| US5081869A (en) * | 1989-02-06 | 1992-01-21 | Alcan International Limited | Method and apparatus for the measurement of the thermal conductivity of gases |
| FR2651038B1 (fr) * | 1989-08-21 | 1991-10-31 | Capsor | Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif |
| US6166356A (en) * | 1999-04-19 | 2000-12-26 | Hewlett-Packard | Temperature monitoring system |
| US7604478B2 (en) * | 2005-03-21 | 2009-10-20 | Honeywell International Inc. | Vapor resistant fuel burning appliance |
| DE102014000343A1 (de) | 2014-01-11 | 2015-07-16 | Dräger Safety AG & Co. KGaA | Gasmessgerät |
| US10054534B1 (en) * | 2015-07-08 | 2018-08-21 | Airviz Inc. | Group calibration of environmental sensors |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3695848A (en) * | 1970-04-07 | 1972-10-03 | Naoyoshi Taguchi | Gas detecting device |
| GB1374575A (en) * | 1970-08-26 | 1974-11-20 | Nat Res Dev | Semiconducting gas-sensitive devices |
| US3877291A (en) * | 1972-08-15 | 1975-04-15 | Borg Warner | Portable breath tester |
| GB1451231A (en) * | 1973-03-30 | 1976-09-29 | Nat Res Dev | Gas sensitive devices |
| DE2437352C2 (de) * | 1973-08-03 | 1984-11-22 | Nohmi Bosai Kogyo Co., Ltd., Tokyo | Vorrichtung zum Nachweis von Kohlenmonoxyd |
| NL7313897A (nl) * | 1973-10-10 | 1975-04-14 | Visser Robertus Gerardus | Gasindicator. |
| US3906473A (en) * | 1974-03-08 | 1975-09-16 | Ross Inc Will | Method and apparatus for operating a gas sensor |
| BE819872A (fr) * | 1974-09-13 | 1974-12-31 | Procede et dispositif pour determiner la proportion d'un ou de plusieurs composants dans un melange gazeux. | |
| US3950739A (en) * | 1974-10-30 | 1976-04-13 | Campman James P | Detector for detecting and locating the source of a contaminating gas or smoke in the atmosphere |
| US4000650B1 (en) * | 1975-03-20 | 1995-11-14 | Endress Hauser Gmbh Co | Method and apparatus for ultrasonic material level measurement |
-
1977
- 1977-01-10 GB GB779/77A patent/GB1557921A/en not_active Expired
- 1977-12-12 US US05/859,522 patent/US4185491A/en not_active Expired - Lifetime
-
1978
- 1978-01-02 NL NL7800036A patent/NL7800036A/xx not_active Application Discontinuation
- 1978-01-06 BE BE184174A patent/BE862723A/xx not_active IP Right Cessation
- 1978-01-09 DE DE19782800683 patent/DE2800683A1/de not_active Withdrawn
- 1978-01-10 FR FR7800533A patent/FR2377035A1/fr active Granted
- 1978-01-10 JP JP148678A patent/JPS5389495A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2377035A1 (fr) | 1978-08-04 |
| US4185491A (en) | 1980-01-29 |
| NL7800036A (nl) | 1978-07-12 |
| JPS5389495A (en) | 1978-08-07 |
| DE2800683A1 (de) | 1978-07-20 |
| BE862723A (fr) | 1978-05-02 |
| GB1557921A (en) | 1979-12-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |