BE691870A - - Google Patents
Info
- Publication number
- BE691870A BE691870A BE691870DA BE691870A BE 691870 A BE691870 A BE 691870A BE 691870D A BE691870D A BE 691870DA BE 691870 A BE691870 A BE 691870A
- Authority
- BE
- Belgium
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
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
-
- 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
- G01D18/004—Continuous recalibration
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR46307 | 1966-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE691870A true BE691870A (en) | 1967-05-29 |
Family
ID=8599022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE691870D BE691870A (en) | 1966-01-18 | 1966-12-28 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE691870A (en) |
| DE (1) | DE1598640A1 (en) |
| GB (1) | GB1169802A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61247918A (en) * | 1985-04-26 | 1986-11-05 | Hochiki Corp | Output correcting device for analog sensor |
| FR2583187B1 (en) * | 1985-06-07 | 1987-10-09 | Gaso Philippe | PROGRAMMABLE AUTOMATON USED FOR CHRONOTACHYGRAPH TESTING |
| GB8528549D0 (en) * | 1985-11-20 | 1985-12-24 | Pitcraft Summit Ltd | Gas detector & mining machine |
| US4687934A (en) * | 1986-01-10 | 1987-08-18 | Andros Analyzers Incorporated | Infrared gas analyzer with automatic zero adjustment |
| US4902896A (en) * | 1987-05-08 | 1990-02-20 | Mine Safety Appliances Company | Infrared fluid analyzer |
| DE4320873A1 (en) * | 1993-06-23 | 1995-01-05 | Hekatron Gmbh | Circuit arrangement for an optical detector for environmental monitoring and display of an interference medium |
| DE4320861A1 (en) * | 1993-06-23 | 1995-01-05 | Hekatron Gmbh | Circuit arrangement for an optical detector for environmental monitoring and display of an interference medium |
| US9255916B2 (en) * | 2012-11-29 | 2016-02-09 | Honeywell International Inc. | Gas detection management system with replacement modules |
-
1966
- 1966-12-28 BE BE691870D patent/BE691870A/xx unknown
-
1967
- 1967-01-16 GB GB219467A patent/GB1169802A/en not_active Expired
- 1967-01-17 DE DE19671598640 patent/DE1598640A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1598640A1 (en) | 1971-04-01 |
| GB1169802A (en) | 1969-11-05 |