FR1217957A - Apparatus for determining the physical properties of materials - Google Patents
Apparatus for determining the physical properties of materialsInfo
- Publication number
- FR1217957A FR1217957A FR781986A FR781986A FR1217957A FR 1217957 A FR1217957 A FR 1217957A FR 781986 A FR781986 A FR 781986A FR 781986 A FR781986 A FR 781986A FR 1217957 A FR1217957 A FR 1217957A
- Authority
- FR
- France
- Prior art keywords
- determining
- materials
- physical properties
- physical
- properties
- Prior art date
- 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
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
- G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels
-
- 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
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1217957XA | 1957-12-26 | 1957-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1217957A true FR1217957A (en) | 1960-05-06 |
Family
ID=22398837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR781986A Expired FR1217957A (en) | 1957-12-26 | 1958-12-18 | Apparatus for determining the physical properties of materials |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1217957A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3339400A (en) * | 1963-08-12 | 1967-09-05 | Automation Prod | Mass presence sensing apparatus |
FR2402861A1 (en) * | 1977-09-13 | 1979-04-06 | Marconi Co Ltd | LIQUID LEVEL SENSOR |
-
1958
- 1958-12-18 FR FR781986A patent/FR1217957A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3339400A (en) * | 1963-08-12 | 1967-09-05 | Automation Prod | Mass presence sensing apparatus |
FR2402861A1 (en) * | 1977-09-13 | 1979-04-06 | Marconi Co Ltd | LIQUID LEVEL SENSOR |
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