GB768117A - Electrical resistance thermometer of low heat capacity - Google Patents
Electrical resistance thermometer of low heat capacityInfo
- Publication number
- GB768117A GB768117A GB111855A GB111855A GB768117A GB 768117 A GB768117 A GB 768117A GB 111855 A GB111855 A GB 111855A GB 111855 A GB111855 A GB 111855A GB 768117 A GB768117 A GB 768117A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxide
- wire
- coating
- coated
- aluminium
- 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
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Thermistors And Varistors (AREA)
Abstract
768,117. Resistance thermometers. DEUTSCHE GOLD - UND SILBER - SCHEIDEANSTALT VORM. ROESSLER. Jan. 13, 1955, No. 1118/55. Class 40 (1). In a resistance thermometer the sensing element is a coreless wire-winding fixedly held within an insulating ceramic coating. In the example of Fig. 1, a bifilar helix winding 1 of suitable resistance wire, e.g. platinum, is completely surrounded by an insulating oxide coating 4 and the latter may itself be coated with a thin gold or silver layer 5, Fig. 2. Processes for producing the ceramic coating ; three difierent processes (i), (ii) and (iii).- (i) The resistance wire is helically wound on a temporary core such as paper, wax, wood, metal or aluminium and the selected oxide is applied by cataphoresis. The temporary core is then removed by burning, melting or dissolving and the interior of the wire helix also oxide coated by cataphoretic deposition. Finally, the whole oxide layer is sintered; (ii) The resistance wire wound into a helix is inserted into a protective tube and whilst in the tube is oxide coated by cataphoretic treatment. The tube forms part of the thermometer and the oxide coating need not be subjected to a sintering process; the hardening of the oxide will occur gradually by the heating of the thermometer in use; (iii) The oxide coating is formed by first coating the resistance wire with the metal of the oxide required and then converting into the oxide. For example, the wire helix may be coated with aluminium-silicon alloy and this coating heat-treated to convert into the corresponding oxides. The resistance wire may be coated with the metal required before winding the wire into a helix. If aluminium is used oxidation electrolytically is preferred. Ceramic coating materials.-Aluminium oxide is stated to be particularly suitable but other. oxides may be used, namely, one or more oxides of magnesium, thorium, titanium and beryllium; also silicon oxide with aluminium oxide as stated at (iii) above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB111855A GB768117A (en) | 1955-01-13 | 1955-01-13 | Electrical resistance thermometer of low heat capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB111855A GB768117A (en) | 1955-01-13 | 1955-01-13 | Electrical resistance thermometer of low heat capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB768117A true GB768117A (en) | 1957-02-13 |
Family
ID=9716473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB111855A Expired GB768117A (en) | 1955-01-13 | 1955-01-13 | Electrical resistance thermometer of low heat capacity |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB768117A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3237139A (en) * | 1962-09-05 | 1966-02-22 | Rosemount Eng Co Ltd | Hollow temperature sensor |
| US4791398A (en) * | 1986-02-13 | 1988-12-13 | Rosemount Inc. | Thin film platinum resistance thermometer with high temperature diffusion barrier |
| EP2787334A1 (en) * | 2013-04-04 | 2014-10-08 | Alopex ONE UG | Resistive thermal sensor |
-
1955
- 1955-01-13 GB GB111855A patent/GB768117A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3237139A (en) * | 1962-09-05 | 1966-02-22 | Rosemount Eng Co Ltd | Hollow temperature sensor |
| US4791398A (en) * | 1986-02-13 | 1988-12-13 | Rosemount Inc. | Thin film platinum resistance thermometer with high temperature diffusion barrier |
| EP2787334A1 (en) * | 2013-04-04 | 2014-10-08 | Alopex ONE UG | Resistive thermal sensor |
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