DE474761C - Thermocouple for temporary temperature measurements - Google Patents
Thermocouple for temporary temperature measurementsInfo
- Publication number
- DE474761C DE474761C DEB132298D DEB0132298D DE474761C DE 474761 C DE474761 C DE 474761C DE B132298 D DEB132298 D DE B132298D DE B0132298 D DEB0132298 D DE B0132298D DE 474761 C DE474761 C DE 474761C
- Authority
- DE
- Germany
- Prior art keywords
- thermocouple
- temperature measurements
- temporary temperature
- temperature
- tube
- 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
- 238000009529 body temperature measurement Methods 0.000 title claims description 3
- 238000005476 soldering Methods 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 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
- G01K7/10—Arrangements for compensating for auxiliary variables, e.g. length of lead
- G01K7/12—Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
-
- 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
-
- 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
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Description
Thermoelement für zeitweilige Temperaturmessungen Sollen Thermoelemente zur Messung von verhältnismäßig niedrigen Temperaturen benutzt werden, so muß behufs Erzielung einer hinreichenden Genauigkeit die Temperatur an der zweiten Verbindungs- oder Lötstelle des Elementes beachtet werden. Die erzeugte Thermokraft hängt bekanntlich von der Temperaturdifferenz zwischen den beiden Lötstellen des Elementes ab.Thermocouple for temporary temperature measurements Should thermocouples are used to measure relatively low temperatures, so must Achieving sufficient accuracy, the temperature at the second connection or solder point of the element must be observed. As is well known, the generated thermal force depends on the temperature difference between the two solder joints of the element.
Man hat daher die zweite Lötstelle des Thermoelementes mit schmelzendem Eis umgeben oder sie in das Anzeigegerät hineingeführt, in welchem durch thermo-mechanische Hilfsmittel, z. B. einen Bimetallstreifen, der Zeiger des Galvanometers um den entsprechenden Beträg über den Nullpunkt vorgerückt und somit der Fehlbetrag mechanisch ausgeglichen wird.You therefore have the second soldering point of the thermocouple with the melting point Ice surround or they are guided into the display device, in which by thermo-mechanical Aids, e.g. B. a bimetal strip, the pointer of the galvanometer around the corresponding Amount moved above zero and thus compensated for the shortfall mechanically will.
Man hat auch durch Berührung der zweiten Lötstelle mit einem Körper von annähernd gleichbleibender und bekannter Temperatur, z. B. mit der menschlichen Hand oder auch nur mit einem Finger, eine konstante und bekannte Temperatur der Lötstelle herbeizuführen gesucht. Hierbei besteht der Nachteil, daß die Temperatur der Hautoberfläche der Bluttemperatur des Körpers, die bei allen gesunden Menschen in technisch ausreichendem Maße übereinstimmt, nicht in allen Fällen genau entspricht. Hierzu kommt, daß durch die einseitige Berührung die Lötstelle nicht allseitig erwärmt wird, so daß durch Wärmestrahlung oder Konvektion ein Verlust auftreten kann.You also have by touching the second soldering point with a body of approximately constant and known temperature, e.g. B. with the human Hand or even just one finger, a constant and known temperature of the Wanted to bring about soldering point. There is the disadvantage that the temperature the skin surface the blood temperature of the body, which in all healthy people corresponds to a technically sufficient degree, does not correspond exactly in all cases. In addition, the one-sided contact does not heat the soldering point on all sides so that a loss may occur due to thermal radiation or convection.
Bei der Erfindung ist die bekannte Tatsache angewendet, daß die Körpertemperatur am genauesten in Körperhöhlen, z. B. im Munde oder unter der Achsel, gemessen werden. kann. Zu diesem Zweck ist die zweite Lötstelle des Thermoelementes zu einem Röhrchen oder Stäbchen geformt, das z. B. nach Art einer Zigarettenspitze in den Mund genommen werden kann. Dieses Röhrchen ist zweckmäßig durch eine biegsame Leitung aus den Materialien des Elementes mit diesen "verbunden.In the invention, the known fact is applied that the body temperature most precisely in body cavities, e.g. B. in the mouth or under the armpit. can. For this purpose the second soldering point of the thermocouple is to a tube shaped or chopsticks, z. B. in the manner of a cigarette holder in the mouth can be. This tube is conveniently through a flexible line from the Materials of the element associated with these ".
In der Abbildung ist beispielsweise die Anwendung der Neuerung bei einem Anlegepyrometer zur Messung von Oberflächentemperaturen dargestellt. a ist ein bandförmiges Thermoelement, das durch den Bügel b gespannt gehalten wird und dessen Lötstelle c mit der zu messenden Oberfläche in Berührung gebracht wird. d ist die mundstückartig geformte zweite Lötstelle, die durch die biegsame Leitung e mit dem festen Teil des Thermoelementes verbunden ist. Die Skala des Ablesegerätes kann mit etwa 370, der durchschnittlichen menschlichen Körpertemperatur, beginnen.In the illustration, for example, the application of the innovation is at a clip-on pyrometer for measuring surface temperatures. a is a ribbon-shaped thermocouple which is held taut by the bracket b and whose solder joint c is brought into contact with the surface to be measured. d is the mouthpiece-shaped second soldering point, which is created by the flexible cable e is connected to the fixed part of the thermocouple. The scale of the reading device can start at around 370, the average human body temperature.
Natürlich kann das beschriebene Mundstück auch sinngemäße Anwendung bei anderen Zwecken dienenden Thermoelementen, z. B. gewöhnlichen Eintauchpyrometern, finden.Of course, the described mouthpiece can also be used analogously for other purposes thermocouples, e.g. B. ordinary immersion pyrometers, Find.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB132298D DE474761C (en) | Thermocouple for temporary temperature measurements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB132298D DE474761C (en) | Thermocouple for temporary temperature measurements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE474761C true DE474761C (en) | 1929-04-10 |
Family
ID=6998056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB132298D Expired DE474761C (en) | Thermocouple for temporary temperature measurements |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE474761C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3258969A (en) * | 1962-12-14 | 1966-07-05 | C Jacobsen & Cie Sa | Differential temperature measuring apparatus |
-
0
- DE DEB132298D patent/DE474761C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3258969A (en) * | 1962-12-14 | 1966-07-05 | C Jacobsen & Cie Sa | Differential temperature measuring apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69832792T2 (en) | ENVIRONMENTALLY AND PERFUSION-NORMALIZED TEMPERATURE DETECTOR | |
| GB1483410A (en) | Temperature and respiration detector | |
| EP0411121A4 (en) | Optical thermometer | |
| DE4415787A1 (en) | LED or LCD dummy thermometer for baby, infant body temp. determn. | |
| DE474761C (en) | Thermocouple for temporary temperature measurements | |
| US3082625A (en) | Thermometer | |
| Bedford et al. | On methods of measuring skin temperature | |
| DE2653959A1 (en) | Ear probe for temp. and voltage measurement - has electrode each end and temp. sensor on tip of element inserted into ear | |
| DE560829C (en) | Needle-shaped thermocouple for piercing | |
| Mendelson | Measurement of the superficial temperature gradient in man | |
| Henriques Jr | Studies of Thermal Injury. VIII. Automatic Recording Caloric Applicator and Skin‐Tissue and Skin‐Surface Thermocouples | |
| DE442294C (en) | Device for the determination of heat transmission and heat conductivity values, consisting of a subdivided measuring plate provided with an insulating layer | |
| Pfund | Radiation Thermopiles | |
| Kuzucu | Measurement of temperature | |
| DE466476C (en) | Radiation pyrometer with compensation device | |
| DE849018C (en) | Medical thermometer | |
| Zorgniotti | Elevated intrascrotal temperature. II: Indirect testis and intrascrotal temperature measurement for clinical and research use. | |
| Foster | Thermocouples for the medical laboratory: Guiding principles and methods of constructing apparatus for surface, cavity, and intramural thermometry | |
| DE287293C (en) | ||
| DE354895C (en) | Thermoelectric radiation meter | |
| Soderstrom | Electrical resistance thermometers as applied to human calorimetry | |
| CH155156A (en) | Bimetal thermometer. | |
| DE423767C (en) | Radiation pyrometer with thermocouple | |
| DE3303227A1 (en) | Rapid-response temperature sensor for medical diagnostic thermometry | |
| Robinson | The Thermopile for Temperature Determinations in Entomology. |