GB961019A - Improvements in electrical heating devices - Google Patents
Improvements in electrical heating devicesInfo
- Publication number
- GB961019A GB961019A GB24573/59A GB2457359A GB961019A GB 961019 A GB961019 A GB 961019A GB 24573/59 A GB24573/59 A GB 24573/59A GB 2457359 A GB2457359 A GB 2457359A GB 961019 A GB961019 A GB 961019A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- thermocouple
- supply
- rectifier
- cycle
- 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
- 238000010438 heat treatment Methods 0.000 title abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
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
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/021—Particular circuit arrangements
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
961,019. Temperature measurement. J. H. WELCH. Sept. 23, 1960 [July 17, 1959], No. 24573/59. Heading G1N An electrical heating element, which may be a thermocouple, which is to be connected alternately to an A.C. supply and to a measuring circuit, is joined to the supply via a half-wave rectifier and to the other circuit via contacts of a relay energised from the supply. In the Figure a thermocouple-heater 1 for a specimen in a microfurnace receives current from an A.C. source 2 in alternate half-cyles via a rectifier 4, the contacts 6, 7 being open. In the other half-cycles the contacts are closed and connect the thermocouple to a galvanometer 3. The rectifier should have a reverse current low enough not to be visible on the galvanometer scale; a diffused-junction silicon rectifier is suitable. The contacts should be closed for less than one half-cycle of the supply, e.g. for 33% of one cycle. Induced currents can be minimised by using screened coaxial cable and screened contacts, or can be detected by using a "dummy" thermocouple with identical materials in both limbs. The device can be for measuring the thermal conductivity of the medium in which it is immersed, or as a temperature- or flow-meter of the exhaust gas of a jet engine or of the coolant in a reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24573/59A GB961019A (en) | 1959-07-17 | 1959-07-17 | Improvements in electrical heating devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24573/59A GB961019A (en) | 1959-07-17 | 1959-07-17 | Improvements in electrical heating devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB961019A true GB961019A (en) | 1964-06-17 |
Family
ID=10213768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24573/59A Expired GB961019A (en) | 1959-07-17 | 1959-07-17 | Improvements in electrical heating devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB961019A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3334814A (en) * | 1965-04-05 | 1967-08-08 | Monsanto Co | Temperature indicating circuit |
| US3502868A (en) * | 1966-10-07 | 1970-03-24 | Leybold Heraeus Gmbh & Co Kg | Mass spectrometer method and tube for equalizing contact potentials of tube electrodes during operation thereof by direct heating |
-
1959
- 1959-07-17 GB GB24573/59A patent/GB961019A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3334814A (en) * | 1965-04-05 | 1967-08-08 | Monsanto Co | Temperature indicating circuit |
| US3502868A (en) * | 1966-10-07 | 1970-03-24 | Leybold Heraeus Gmbh & Co Kg | Mass spectrometer method and tube for equalizing contact potentials of tube electrodes during operation thereof by direct heating |
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