FR2291480B1 - - Google Patents
Info
- Publication number
- FR2291480B1 FR2291480B1 FR7525536A FR7525536A FR2291480B1 FR 2291480 B1 FR2291480 B1 FR 2291480B1 FR 7525536 A FR7525536 A FR 7525536A FR 7525536 A FR7525536 A FR 7525536A FR 2291480 B1 FR2291480 B1 FR 2291480B1
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/002—Automatic recalibration
- G01D18/006—Intermittent recalibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
- G01R17/02—Arrangements in which the value to be measured is automatically compared with a reference value
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742453720 DE2453720A1 (de) | 1974-11-13 | 1974-11-13 | Vorrichtung zur selbsttaetigen driftkorrektur eines messgeraetes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2291480A1 FR2291480A1 (fr) | 1976-06-11 |
| FR2291480B1 true FR2291480B1 (US20100223739A1-20100909-C00005.png) | 1980-08-08 |
Family
ID=5930673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7525536A Granted FR2291480A1 (fr) | 1974-11-13 | 1975-08-18 | Dispositif pour corriger automatiquement le decalage d'un appareil de mesure |
Country Status (6)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151738A (en) * | 1977-11-03 | 1979-05-01 | General Electric Company | Toxic gas monitor having automatic calibration |
| DE3115404A1 (de) * | 1981-04-16 | 1982-11-11 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren und vorrichtung zur ueberwachung und kalibrierung von grenzstromsonden |
| US4447780A (en) * | 1981-10-28 | 1984-05-08 | The Babcock & Wilcox Company | Linearizing circuit and method of calibrating same |
| JPS5885338U (ja) * | 1981-12-07 | 1983-06-09 | 株式会社日立製作所 | 自動焦点装置 |
| DE3150013A1 (de) * | 1981-12-17 | 1983-06-23 | Datron-Electronic Pichl & Schulte KG, 6109 Mühltal | "verfahren und vorrichtung zur automatisierten justierung (eichung) von messgeraeten und wandlern pysikalischer eingangsgroessen" |
| JPH057568Y2 (US20100223739A1-20100909-C00005.png) * | 1985-11-27 | 1993-02-25 | ||
| US4770026A (en) * | 1987-01-15 | 1988-09-13 | Alcotek, Inc. | Method of and apparatus for testing breath alcohol |
| JP4277599B2 (ja) * | 2003-07-14 | 2009-06-10 | ヤマハ株式会社 | オフセット補正方法、オフセット補正回路及び電子ボリューム |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3441863A (en) * | 1965-08-02 | 1969-04-29 | Tektronix Inc | Drift compensated direct coupled amplifier circuit having adjustable d.c. output voltage level |
| US3504521A (en) * | 1966-10-25 | 1970-04-07 | Centre Nat Rech Metall | Method and device for the continuous analysis of the composition of a gas |
-
1974
- 1974-11-13 DE DE19742453720 patent/DE2453720A1/de not_active Ceased
-
1975
- 1975-08-18 FR FR7525536A patent/FR2291480A1/fr active Granted
- 1975-10-09 GB GB41454/75A patent/GB1523735A/en not_active Expired
- 1975-11-03 NL NL7512874A patent/NL7512874A/xx not_active Application Discontinuation
- 1975-11-10 US US05/630,335 patent/US4032856A/en not_active Expired - Lifetime
- 1975-11-13 JP JP50136759A patent/JPS5172388A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1523735A (en) | 1978-09-06 |
| DE2453720A1 (de) | 1976-05-20 |
| JPS5172388A (US20100223739A1-20100909-C00005.png) | 1976-06-23 |
| NL7512874A (nl) | 1976-05-17 |
| FR2291480A1 (fr) | 1976-06-11 |
| US4032856A (en) | 1977-06-28 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DL | Decision of the director general to leave to make available licences of right | ||
| ST | Notification of lapse |