CH189997A - AC remote display device. - Google Patents
AC remote display device.Info
- Publication number
- CH189997A CH189997A CH189997DA CH189997A CH 189997 A CH189997 A CH 189997A CH 189997D A CH189997D A CH 189997DA CH 189997 A CH189997 A CH 189997A
- Authority
- CH
- Switzerland
- Prior art keywords
- display device
- remote display
- field coil
- changing
- transmitter device
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
- G01D5/2013—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Description
Wechselstrom-rernanzeigeeinrichtung. Die Erfindung betrifft eine Wechselstrom- Fernanzeigevorriehtung für Temperaturwerte oder für den Öffnungsgrad von Absperrvor richtungen, sowie für den Wasserstand von Behältern und derglei.chen. Derartige Ein richtungen werden im allgemeinen so zusam mengestellt, dass sowohl als Geber- wie als Fernanzeigeapparat ein Drehspulinstrument verwendet wird,
wobei nach dem Induktions prinzip die Drehspule des Pernanzeigeappa- rates stets dieselbe Stellung wie diejenige des Geberapparates einnimmt. Diese Fern- anzeigeeinrichtungen bieten wohl die nötige Anzeigegenaui.gkeit, sind aber bekanntlich mechanisch empfindlich und kommen relativ teuer zu stehen.
Vorliegende Erfindung beruht auch auf dem Induktionsprinzip, aber so, - dass einer Luftspaltveränderung infolge der Drehbewe gung eines Eisenankers in einem elektroma.g- iietischen Felde eine Veränderung der Induk tion und somit der Stromaufnahme der Feld spule entspricht..
Die in Anwendung kommende Wechsel- strom-Fernanzeigeeinrichtung besteht aus einem Geberapparat und einem Strommesser als Fernanzeigeapparat, wobei der Geber apparat einen Drehanker aus Eisen auf weist, welcher in einem elektromagnetischen Felde drehbar angeordnet ist; zum Zwecke, bei Änderungen der zu überwachenden Grösse die Induktion und damit die iStrom- aufnahme der Feldspule durch Änderung des Luftspaltes zu ändern, so .dass je nach dem Verdrehungswinkel des Drehankers ein ent sprechender Ausschlag am Fernanzeigeappa rat erfolgt.
In der Zeichnung ist eine beispielsweise Ausführung des Erfindungsgegenstandes für eine Temperatur-Fernanzeigeeinrichtung an gegeben.
Der Drehanker 1 erfährt von einer tem peraturempfindlichen Bimetallspirale 2 mit telst .der Drehachse 3 eine Drehbewegung entsprechend der Umgebungstemperatur. Da durch nimmt der Drehanker 1 eine bestimmte Stellung im elektromagnetischen System 4 mit Bevricklung <B>5</B> ein.
Der Strommesser 6, welcher als Tempe- ratur-Fernanzeigeinstrument dient, wird mit Vorteil entsprechend der Stellung des Dreh ankers 1 im elektromagnetischen System 4 in Grad Celsius ,geeicht. Der Regulierwider stand 7 .gestattet, an Ort und Stelle die ge wünschte Erregungsstromstärke für das elek tromagnetische System eventuell nachzuregu- l fieren.
Der elektrische Stromkreis ist folgender: Von der Klemme 8 aus .geht der Strom über die Feldspule 5, von dieser durch den.Strom- messer 6 und zurück über einen eventuellen Regulierwiderstand 7 zur Klemme 9.
Vorzugsweise wird die Feldspule des elektromagnetischen Systems an Wechsel strom von niederer Spannung angeschlossen. Dadurch erzielt man, dass bei gegebener Lei stung grössere Ströme die Feldspule durch fliessen, was die Anwendung billiger elektro magnetischer '3trommesser gestattet. Wünscht man eine genaue Angabe am Fernanzeige instrument, so ist eine konstante Stromquelle zu verwenden. Wenn aber keine grosse Fern anzeigegenauigkeit erforderlich ist, so kann eine auf Niederspannung transformierte Netzspannung als .Stromquelle dienen.
Nach -dem oben erwähnten Beispiel wird der Drehanker 1 von einer temperatur empfindlichen Bimetallspirale 2 gedreht. Dieser Drehanker kann aber auch von irgend einem andern, temperaturempfind lichen Organ oder von der Spindel eines Ab sperrventils, sowie von einer Wasserstan.ds- vorrichtung und dergleichen betätigt werden.
AC remote indicator. The invention relates to an alternating current remote display device for temperature values or for the degree of opening of Absperrvor directions, as well as for the water level of containers and derglei.chen. Such a directions are generally set together so that a moving-coil instrument is used both as a transmitter and as a remote display device,
according to the induction principle, the moving coil of the display device always takes the same position as that of the transmitter device. These remote display devices offer the necessary display accuracy, but are known to be mechanically sensitive and are relatively expensive.
The present invention is also based on the induction principle, but in such a way that a change in the air gap as a result of the rotational movement of an iron armature in an electromagical field corresponds to a change in the induction and thus the current consumption of the field coil ..
The alternating current remote display device used consists of a transmitter device and an ammeter as a remote display device, the transmitter device having a rotating armature made of iron which is rotatably arranged in an electromagnetic field; for the purpose of changing the induction and thus the current consumption of the field coil by changing the air gap when the variable to be monitored changes, so that a corresponding deflection occurs on the remote display device depending on the angle of rotation of the rotating armature.
In the drawing, an example embodiment of the subject invention for a temperature remote display device is given.
The rotary armature 1 experiences a rotary movement corresponding to the ambient temperature from a temperature-sensitive bimetal spiral 2 with central axis of rotation 3. Since the rotating armature 1 assumes a certain position in the electromagnetic system 4 with beveling <B> 5 </B>.
The ammeter 6, which serves as a remote temperature display instrument, is advantageously calibrated according to the position of the rotary armature 1 in the electromagnetic system 4 in degrees Celsius. The regulating resistor 7 allows you to readjust the desired excitation current for the electromagnetic system on the spot.
The electrical circuit is as follows: The current goes from terminal 8 via the field coil 5, from there through the ammeter 6 and back via a possible regulating resistor 7 to terminal 9.
Preferably, the field coil of the electromagnetic system is connected to alternating current of low voltage. This achieves that at a given power higher currents flow through the field coil, which allows the use of cheaper electro-magnetic '3trommesser. If you want precise information on the remote display instrument, a constant power source must be used. If, however, no great remote display accuracy is required, then a mains voltage transformed to low voltage can serve as a power source.
According to the example mentioned above, the rotating armature 1 is rotated by a temperature-sensitive bimetal spiral 2. This rotating armature can also be operated by any other, temperature-sensitive organ or by the spindle of a shut-off valve, as well as by a Wasserstan.ds- device and the like.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH189997T | 1936-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH189997A true CH189997A (en) | 1937-03-31 |
Family
ID=4436655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH189997D CH189997A (en) | 1936-04-22 | 1936-04-22 | AC remote display device. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH189997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2480433A (en) * | 1944-11-25 | 1949-08-30 | Landis & Gyr Ag | Condition responsive system |
-
1936
- 1936-04-22 CH CH189997D patent/CH189997A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2480433A (en) * | 1944-11-25 | 1949-08-30 | Landis & Gyr Ag | Condition responsive system |
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