FR2178950B1 - - Google Patents
Info
- Publication number
- FR2178950B1 FR2178950B1 FR7311545A FR7311545A FR2178950B1 FR 2178950 B1 FR2178950 B1 FR 2178950B1 FR 7311545 A FR7311545 A FR 7311545A FR 7311545 A FR7311545 A FR 7311545A FR 2178950 B1 FR2178950 B1 FR 2178950B1
- 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
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
- G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/223—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water using a melting or dissolving material as a part of alarm-means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/42—Switches operated by change of humidity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/0006—Permanent magnet actuating reed switches
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Level Indicators Using A Float (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3891672 | 1972-04-01 | ||
JP47103410A JPS4960990A (en) | 1972-10-14 | 1972-10-14 | |
JP65673A JPS4988585A (en) | 1972-12-25 | 1972-12-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2178950A1 FR2178950A1 (en) | 1973-11-16 |
FR2178950B1 true FR2178950B1 (en) | 1974-05-17 |
Family
ID=27274546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7311545A Expired FR2178950B1 (en) | 1972-04-01 | 1973-03-30 |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2178950B1 (en) |
IT (1) | IT981593B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2455294A1 (en) * | 1979-04-27 | 1980-11-21 | Inst Francais Du Petrole | ELEMENTS SENSITIVE TO CERTAIN POLLUTANT ORGANIC PRODUCTS, PARTICULARLY HYDROCARBONS |
JPS5849612B2 (en) * | 1979-11-09 | 1983-11-05 | 日本鋼管株式会社 | Method and device for measuring the position and shape of the molten zone in a blast furnace |
-
1973
- 1973-03-22 IT IT2201173A patent/IT981593B/en active
- 1973-03-30 FR FR7311545A patent/FR2178950B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2365434B2 (en) | 1976-04-22 |
DE2316284A1 (en) | 1973-10-18 |
DE2365434A1 (en) | 1975-01-02 |
DE2365435A1 (en) | 1975-01-02 |
IT981593B (en) | 1974-10-10 |
DE2365435B2 (en) | 1977-02-10 |
FR2178950A1 (en) | 1973-11-16 |
DE2316284B2 (en) | 1976-12-16 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |