GB570683A - Improved method of and means for detecting, indicating or controlling temperature changes in liquids - Google Patents
Improved method of and means for detecting, indicating or controlling temperature changes in liquidsInfo
- Publication number
- GB570683A GB570683A GB1544843A GB1544843A GB570683A GB 570683 A GB570683 A GB 570683A GB 1544843 A GB1544843 A GB 1544843A GB 1544843 A GB1544843 A GB 1544843A GB 570683 A GB570683 A GB 570683A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- liquid
- current
- milliammeter
- relay
- 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
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/005—Circuits arrangements for indicating a predetermined temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
570,683. Measuring resistance. STERN, W. Sept. 21, 1943, No. 15448. [Class 37] [Also in Groups XXI and XXXV] Temperature.-A change of state from liquid to solid or vice versa is supervised by means of electrodes immersed in the material and situated' near the wall and the container or in a pocket 2 or small vessel connected to the container, which term includes pipes where a flowing liquid is concerned. The electrodes are connected in circuit with a source of low-tension electric current and a current-sensitive device such as a milliammeter. An electric heater 8 may be immersed in the liquid and switched on by a relay in the circuit when the temperature has fallen near that of solidification. The system may include an audible or visible alarm, such as a lamp 7, and may be arranged to empty a tank before water freezes. As shown, a single electrode 1 and a tank 3 are connected in circuit with a transformer 4, a relay 6 and a milliammeter 5. The supervisory current may be applied intermittently by a time switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1544843A GB570683A (en) | 1943-09-21 | 1943-09-21 | Improved method of and means for detecting, indicating or controlling temperature changes in liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1544843A GB570683A (en) | 1943-09-21 | 1943-09-21 | Improved method of and means for detecting, indicating or controlling temperature changes in liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB570683A true GB570683A (en) | 1945-07-18 |
Family
ID=10059317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1544843A Expired GB570683A (en) | 1943-09-21 | 1943-09-21 | Improved method of and means for detecting, indicating or controlling temperature changes in liquids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB570683A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117436A (en) * | 1982-03-26 | 1983-10-12 | Paul Ferron | Pipework frost protection system |
| GB2203213A (en) * | 1987-04-02 | 1988-10-12 | Donald Edgar Bromley | Frost protection system for water pipes |
-
1943
- 1943-09-21 GB GB1544843A patent/GB570683A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117436A (en) * | 1982-03-26 | 1983-10-12 | Paul Ferron | Pipework frost protection system |
| GB2203213A (en) * | 1987-04-02 | 1988-10-12 | Donald Edgar Bromley | Frost protection system for water pipes |
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