DE602398C - Electrical thermometer capacitor, the capacity of which depends on the level of a conductive column of liquid - Google Patents
Electrical thermometer capacitor, the capacity of which depends on the level of a conductive column of liquidInfo
- Publication number
- DE602398C DE602398C DEM124957D DEM0124957D DE602398C DE 602398 C DE602398 C DE 602398C DE M124957 D DEM124957 D DE M124957D DE M0124957 D DEM0124957 D DE M0124957D DE 602398 C DE602398 C DE 602398C
- Authority
- DE
- Germany
- Prior art keywords
- depends
- liquid
- capacity
- level
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 title claims description 9
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/258—Temperature compensation means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Fluid Pressure (AREA)
Description
Elektrischer Thermometerkondensator, dessen Kapazität von dem Stand einer leitenden Flüssigkeitssäule abhängig ist Zwei Typen von elektrischen Thermometerkondensatören sind bekannt: Kondensatoren mit beweglicher Elektrode aus deformierbarem festem Körper, z. B. Bimetallstreifen, und Kondensatoren mit beweglicher Elektrode aus Flüssigkeitsthermometersäule, z. B. Quecksilbersäule. Die Kondensatoren ersterer Art haben den Nachteil, daß die Lage der beweglichen Elektrode von den mechanischen Spannungen innerhalb verschiedener Teile des sich bildenden deformierbaren Körpers abhängig ist und daß daher die Eichung des Thermometers bzw. die Abhängigkeit seiner Kapazität von der Temperatur sich im Laufe der Zeit, insbesondere durch den Einfluß der Umgebung auf die chemische Beschaffenheit dieses Körpers, ändert. Die - Temperaturkondensatoren, deren Kapazität von dem Stand einer leitenden Flüssigkeitssäule abhängig ist, ändern sich weniger mit der Zeit.Electrical thermometer capacitor, the capacity of which depends on the state depends on a conductive column of liquid. Two types of electrical thermometer condensers are known: capacitors with movable electrode made of deformable solid Body, e.g. B. bimetal strips, and capacitors with a movable electrode Liquid thermometer column, e.g. B. Mercury Column. The capacitors of the former Kind have the disadvantage that the position of the movable electrode depends on the mechanical Stresses within different parts of the forming deformable body is dependent and that therefore the calibration of the thermometer or the dependence of its Capacity of the temperature changes in the course of time, especially by the influence of the environment on the chemical nature of this body, changes. The - temperature capacitors, whose capacity depends on the level of a conductive column of liquid less over time.
Man hat bis jetzt diese letztere Bau-,veise nur derart verwendet, daß mit wachsender Temperatur auch die Kapazität wächst.So far this latter construction method has only been used in such a way that with increasing temperature the capacity also increases.
.Nach der Erfindung wird diese Bauweise in der Weise abgeändert, daß die Einstellung der leitenden Flüssigkeitssäule (vorzugsweise Quecksilbersäule) unter dem von der Temperatur abhängigen Druck einer nichtleitenden Flüssigkeit, z. B. Alkohol o. dgl., derart erfolgt, daß die Kapazität des Kondensators mit steigender Temperatur fällt. Solche Kondensatoren können mit Vorteil verwendet werden in Kombination mit anderen Kondensatoren oder mit Schwingungskreisen, deren Kapazität mit der Temperatur steigt, zur Herbeiführung der Temperaturunabhängigkeit der ganzen Anordnung oder einer gewünschten Temperaturabhängigkeit.. According to the invention, this construction is modified in such a way that the setting of the conductive liquid column (preferably mercury column) under the temperature-dependent pressure of a non-conductive liquid, z. B. alcohol o. The like., Is done in such a way that the capacitance of the capacitor increases with Temperature drops. Such capacitors can be used with advantage in combination with other capacitors or with oscillating circuits, their capacitance with the temperature increases, to bring about the temperature independence of the whole arrangement or a desired temperature dependence.
Ein Ausführungsbeispiel des Thermometerkondensators nach der Erfindung ist in der Zeichnung dargestellt. Ein Alkoholthermometern steuert die Quecksilbersäule g, deren Lage zur Elektroden die Kapazität des Thermometers bestimmt, wobei die Elektroden nach Art einer Manschette einen Teil des Thermometerrohres umfaßt. Der andere Kondensatoranschluß kann in bekannter Weise entweder kapazitiv durch eine auf dem Thermometerrohr angebrachte, die Quecksilbersäule umfassende Belegung m oder galvanisch mittels einer in das Innere des Rohres eingeführten Zuleitung erfolgen. Bei steigender Temperatur drängt die Alkoholsäule das Quecksilber mehr oder weniger aus dem Bereich des von der Elektrode rz umfaßten Raumes hinaus, wodurch die Kapazität vermindert wird.An embodiment of the thermometer capacitor according to the invention is shown in the drawing. An alcohol thermometer controls the mercury column g, the position of which in relation to the electrodes determines the capacitance of the thermometer, the Electrodes in the manner of a cuff includes part of the thermometer tube. Of the other capacitor connection can in a known manner either capacitively by a On the thermometer tube attached, the mercury column comprehensive occupancy m or galvanically by means of a feed line introduced into the interior of the pipe. As the temperature rises, the alcohol column more or less pushes the mercury out of the area of the space enclosed by the electrode rz, as a result of which the capacitance is decreased.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM124957D DE602398C (en) | Electrical thermometer capacitor, the capacity of which depends on the level of a conductive column of liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM124957D DE602398C (en) | Electrical thermometer capacitor, the capacity of which depends on the level of a conductive column of liquid |
Publications (1)
Publication Number | Publication Date |
---|---|
DE602398C true DE602398C (en) | 1934-09-07 |
Family
ID=7330642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM124957D Expired DE602398C (en) | Electrical thermometer capacitor, the capacity of which depends on the level of a conductive column of liquid |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE602398C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2941652A1 (en) * | 1979-10-15 | 1981-04-23 | Precitronic Gesellschaft für Feinmechanik und Electronik mbH, 2000 Hamburg | DEVICE FOR CAPACITIVE LEVEL MEASUREMENT |
-
0
- DE DEM124957D patent/DE602398C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2941652A1 (en) * | 1979-10-15 | 1981-04-23 | Precitronic Gesellschaft für Feinmechanik und Electronik mbH, 2000 Hamburg | DEVICE FOR CAPACITIVE LEVEL MEASUREMENT |
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