GB1412513A - Method and apparatus for measuring the level of a liquid medium - Google Patents
Method and apparatus for measuring the level of a liquid mediumInfo
- Publication number
- GB1412513A GB1412513A GB2587373A GB2587373A GB1412513A GB 1412513 A GB1412513 A GB 1412513A GB 2587373 A GB2587373 A GB 2587373A GB 2587373 A GB2587373 A GB 2587373A GB 1412513 A GB1412513 A GB 1412513A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stainless steel
- signal
- former
- levels
- temperature
- 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
- 239000007788 liquid Substances 0.000 title abstract 3
- 239000000523 sample Substances 0.000 abstract 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 abstract 2
- 229910001338 liquidmetal Inorganic materials 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000000053 physical method Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
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
- G01F23/26—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1412513 Electro-physical measurement - liquid level GROUPEMENT POUR LES ACTIVITES ATOMIQUES ET AVANCEES 30 May 1973 [30 May 1972] 25873/73 Heading G1N In a mutual inductance type liquid level sensing probe for use at high temperature e.g. with liquid metals and in which the output may be affected by the conductivity of the coil former and protective can, it has been found that by choosing a suitable frequency for energization the difference between signals for different levels can be made independent of temperature, i.e. all levels have the same temperature/signal variation, so that the same simple temperature compensation can be applied at all levels. Probe construction, Figs. 1 and 2. The former is made of austenitic stainless steel angles 2, 3 welded back to back with lugs 10, 11 pressed out to retain the leads. The coils are interwound in slots 4 ... 9 and preferably comprise metal sheathed conductors with magnesia insulation in a stainless steel sheath. The coils (and former) are mounted in an austenitic stainless steel can (not shown) which may be further protected by a refractory tube if the liquid metal is corrosive e.g. Aluminium. Circuit, Fig. 4. The probe is energized at a predetermined frequency from a stabilized oscillator, and at the same time D.C. is applied to primary which acts a resistance thermometer providing a compensating signal. This signal is amplified and added to the rectified secondary output signal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7219353A FR2186641B1 (en) | 1972-05-30 | 1972-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1412513A true GB1412513A (en) | 1975-11-05 |
Family
ID=9099347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2587373A Expired GB1412513A (en) | 1972-05-30 | 1973-05-30 | Method and apparatus for measuring the level of a liquid medium |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE799801A (en) |
| DE (1) | DE2327755C2 (en) |
| FR (1) | FR2186641B1 (en) |
| GB (1) | GB1412513A (en) |
| IT (1) | IT1006053B (en) |
| NL (1) | NL7307612A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4164146A (en) * | 1976-11-02 | 1979-08-14 | The United States Of America As Represented By The United States Department Of Energy | Apparatus and method for monitoring the presence of a conductive media |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE418996B (en) * | 1977-09-19 | 1981-07-06 | Atomenergi Ab | PROCEDURE AND DEVICE FOR ELECTROMAGNETIC SIZE SATURITY IN CONNECTION WITH AN ELECTRICALLY CONDUCTIVE MATERIAL WITH HIGH TEMPERATURE |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3324722A (en) * | 1964-12-23 | 1967-06-13 | Atomic Power Dev Ass Inc | Continuous fluid level measuring apparatus |
-
1972
- 1972-05-30 FR FR7219353A patent/FR2186641B1/fr not_active Expired
-
1973
- 1973-05-21 BE BE1005070A patent/BE799801A/en not_active IP Right Cessation
- 1973-05-25 IT IT2456573A patent/IT1006053B/en active
- 1973-05-30 DE DE19732327755 patent/DE2327755C2/en not_active Expired
- 1973-05-30 NL NL7307612A patent/NL7307612A/xx not_active Application Discontinuation
- 1973-05-30 GB GB2587373A patent/GB1412513A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4164146A (en) * | 1976-11-02 | 1979-08-14 | The United States Of America As Represented By The United States Department Of Energy | Apparatus and method for monitoring the presence of a conductive media |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2186641B1 (en) | 1974-12-27 |
| DE2327755C2 (en) | 1984-07-19 |
| DE2327755A1 (en) | 1973-12-20 |
| BE799801A (en) | 1973-11-21 |
| FR2186641A1 (en) | 1974-01-11 |
| NL7307612A (en) | 1973-12-04 |
| IT1006053B (en) | 1976-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |