NO750446L - - Google Patents
Info
- Publication number
- NO750446L NO750446L NO750446A NO750446A NO750446L NO 750446 L NO750446 L NO 750446L NO 750446 A NO750446 A NO 750446A NO 750446 A NO750446 A NO 750446A NO 750446 L NO750446 L NO 750446L
- Authority
- NO
- Norway
- Prior art keywords
- accordance
- operational amplifier
- electronic
- electronic operational
- monitored
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 25
- 238000005259 measurement Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 10
- 239000004065 semiconductor Substances 0.000 claims description 9
- 230000035945 sensitivity Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000004020 luminiscence type Methods 0.000 claims description 2
- 238000004451 qualitative analysis Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000004445 quantitative analysis Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 21
- 238000004868 gas analysis Methods 0.000 description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Regulation And Control Of Combustion (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2408218A DE2408218C3 (de) | 1974-02-21 | 1974-02-21 | Schaltungsanordnung zum Nachweis von Gasen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO750446L true NO750446L (de) | 1975-08-22 |
Family
ID=5907984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO750446A NO750446L (de) | 1974-02-21 | 1975-02-11 |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3997837A (de) |
| JP (1) | JPS50124694A (de) |
| BE (1) | BE825625A (de) |
| CH (1) | CH619781A5 (de) |
| DE (1) | DE2408218C3 (de) |
| DK (1) | DK48775A (de) |
| FR (1) | FR2262301B1 (de) |
| GB (1) | GB1495584A (de) |
| IT (1) | IT1031839B (de) |
| LU (1) | LU71882A1 (de) |
| NL (1) | NL7501510A (de) |
| NO (1) | NO750446L (de) |
| SE (1) | SE409510B (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112356A (en) * | 1976-12-20 | 1978-09-05 | Toy Stephen M | Semiconductor gas detector circuit |
| US4132109A (en) * | 1977-07-22 | 1979-01-02 | Alcohol Countermeasure Systems, Inc. | Breath testing system |
| US4150370A (en) * | 1977-08-22 | 1979-04-17 | Thurman Bradshaw | Smoke detector |
| US4228429A (en) * | 1977-12-29 | 1980-10-14 | Ricoh Company, Ltd. | Alarm system having phase-sensitive bridge circuit |
| DE3025985C2 (de) * | 1980-07-09 | 1985-05-30 | Hartmut 7067 Plüderhausen Teut | Überwachungsvorrichtung |
| US4351181A (en) * | 1980-10-17 | 1982-09-28 | Currans James H | Linear, gas to voltage transducer circuit |
| DE3329432C2 (de) * | 1983-08-12 | 1985-12-12 | Auergesellschaft Gmbh, 1000 Berlin | Gasmeßgerät |
| US4818977A (en) * | 1987-11-03 | 1989-04-04 | Mine Safety Appliances Company | Combustible gas detector having temperature stabilization capability |
| FR2624974B1 (fr) * | 1987-12-21 | 1990-09-07 | Dana Dominique | Dispositif detecteur de gaz |
| DE3809903A1 (de) * | 1988-03-24 | 1989-10-05 | Maria Dobosne Gyulai | Anordnung zur steuerung kleiner luftreinigungsanlagen |
| US5576739A (en) * | 1992-06-18 | 1996-11-19 | Phy-Con. Inc. | Carbon monoxide safety system |
| US6484559B2 (en) * | 2001-02-26 | 2002-11-26 | Lucent Technologies Inc. | Odor sensing with organic transistors |
| GB2423400A (en) * | 2005-02-22 | 2006-08-23 | Thorn Security | Detector with variable sensitivity in different modes of operation |
| US7683794B2 (en) * | 2007-05-15 | 2010-03-23 | David Contreras | Carbon monoxide safety system for preventing entry into a dwelling containing toxic gases |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3051895A (en) * | 1955-04-21 | 1962-08-28 | Robert L Carson | Gas detection |
| US3392333A (en) * | 1964-04-13 | 1968-07-09 | Beckman Instruments Inc | Oxygen multisensor switching circuit |
| US3428892A (en) * | 1965-09-20 | 1969-02-18 | James E Meinhard | Electronic olfactory detector having organic semiconductor barrier layer structure |
| US3482233A (en) * | 1967-04-13 | 1969-12-02 | Eastern Co | Gas detector system |
| US3474022A (en) * | 1967-09-14 | 1969-10-21 | Atomic Energy Commission | Alarm system for uf6 in air |
| BE728659A (de) * | 1968-03-01 | 1969-08-19 | ||
| US3609732A (en) * | 1969-05-28 | 1971-09-28 | New Cosmos Electric Co | Gas responsive switching device |
| CH506062A (de) * | 1970-06-30 | 1971-04-15 | Balzers Patent Beteilig Ag | Verfahren zum Betrieb einer Halogennachweisdiode und Vorrichtung zur Durchführung des Verfahrens |
| JPS5010678B1 (de) * | 1970-07-21 | 1975-04-23 | ||
| US3678489A (en) * | 1971-02-08 | 1972-07-18 | Alexandr Nazarievich Scherban | Apparatus for determining the concentration of combustible gases and vapors |
| US3733595A (en) * | 1971-02-12 | 1973-05-15 | E Benedict | Condition responsive switching circuit |
| US3714562A (en) * | 1971-04-23 | 1973-01-30 | Selco Mining Corp Ltd | Method and apparatus for the detection of selected components in fluids |
| DE2240814C3 (de) * | 1971-08-19 | 1974-05-30 | Nittan Co. Ltd., Tokio | Gasspürelement |
| US3754219A (en) * | 1972-01-03 | 1973-08-21 | Johnson Service Co | High impedance gaseous ion sensing and detection system |
| US3778229A (en) * | 1972-03-29 | 1973-12-11 | Gen Electric | Ozone gas detector |
| DE2239270B2 (de) | 1972-08-09 | 1975-07-24 | Yazaki Sogyo K.K., Tokio | Gasspürgerät |
| FR2208520A5 (de) * | 1972-11-29 | 1974-06-21 | Charbonnages De France | |
| US3859644A (en) * | 1973-04-24 | 1975-01-07 | Burger Chef Systems Inc | Temperature responsive cooking timer |
-
1974
- 1974-02-21 DE DE2408218A patent/DE2408218C3/de not_active Expired
-
1975
- 1975-02-07 NL NL7501510A patent/NL7501510A/xx not_active Application Discontinuation
- 1975-02-11 NO NO750446A patent/NO750446L/no unknown
- 1975-02-11 DK DK48775*#A patent/DK48775A/da not_active Application Discontinuation
- 1975-02-11 SE SE7501516A patent/SE409510B/xx unknown
- 1975-02-13 JP JP50018406A patent/JPS50124694A/ja active Pending
- 1975-02-17 FR FR7504817A patent/FR2262301B1/fr not_active Expired
- 1975-02-17 BE BE153430A patent/BE825625A/xx unknown
- 1975-02-19 LU LU71882A patent/LU71882A1/xx unknown
- 1975-02-19 IT IT20394/75A patent/IT1031839B/it active
- 1975-02-19 CH CH208175A patent/CH619781A5/de not_active IP Right Cessation
- 1975-02-20 US US05/551,324 patent/US3997837A/en not_active Expired - Lifetime
- 1975-02-20 GB GB7233/75A patent/GB1495584A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2408218B2 (de) | 1980-02-07 |
| IT1031839B (it) | 1979-05-10 |
| CH619781A5 (de) | 1980-10-15 |
| NL7501510A (nl) | 1975-08-25 |
| FR2262301A1 (de) | 1975-09-19 |
| SE7501516L (de) | 1975-08-22 |
| DK48775A (de) | 1975-10-20 |
| GB1495584A (en) | 1977-12-21 |
| JPS50124694A (de) | 1975-09-30 |
| BE825625A (fr) | 1975-06-16 |
| DE2408218C3 (de) | 1983-11-03 |
| LU71882A1 (de) | 1975-06-24 |
| DE2408218A1 (de) | 1975-09-04 |
| US3997837A (en) | 1976-12-14 |
| FR2262301B1 (de) | 1980-01-25 |
| SE409510B (sv) | 1979-08-20 |
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