FR2269708B1 - - Google Patents
Info
- Publication number
- FR2269708B1 FR2269708B1 FR7513412A FR7513412A FR2269708B1 FR 2269708 B1 FR2269708 B1 FR 2269708B1 FR 7513412 A FR7513412 A FR 7513412A FR 7513412 A FR7513412 A FR 7513412A FR 2269708 B1 FR2269708 B1 FR 2269708B1
- 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
- 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
- G01F23/28—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 by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1884374 | 1974-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2269708A1 FR2269708A1 (en) | 1975-11-28 |
| FR2269708B1 true FR2269708B1 (online.php) | 1982-01-08 |
Family
ID=10119360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7513412A Granted FR2269708A1 (en) | 1974-04-30 | 1975-04-29 | Level indicator for liquid in a tube - has moving mirror system and scale viewed through optical system |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2269708A1 (online.php) |
-
1975
- 1975-04-29 FR FR7513412A patent/FR2269708A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2269708A1 (en) | 1975-11-28 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |