DE409318C - Device for the electrical remote transmission of movements on measuring instruments of all kinds, such. B. with manometers, water level indicators o. - Google Patents

Device for the electrical remote transmission of movements on measuring instruments of all kinds, such. B. with manometers, water level indicators o.

Info

Publication number
DE409318C
DE409318C DESCH68589D DESC068589D DE409318C DE 409318 C DE409318 C DE 409318C DE SCH68589 D DESCH68589 D DE SCH68589D DE SC068589 D DESC068589 D DE SC068589D DE 409318 C DE409318 C DE 409318C
Authority
DE
Germany
Prior art keywords
bismuth
water level
movements
manometers
movement
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
Application number
DESCH68589D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffer & Budenberg GmbH
Original Assignee
Schaeffer & Budenberg GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffer & Budenberg GmbH filed Critical Schaeffer & Budenberg GmbH
Priority to DESCH68589D priority Critical patent/DE409318C/en
Application granted granted Critical
Publication of DE409318C publication Critical patent/DE409318C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C10/00Adjustable resistors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING 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
    • G01D5/00Mechanical 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
    • G01D5/12Mechanical 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
    • G01D5/14Mechanical 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
    • G01D5/18Mechanical 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 effective impedance of discharge tubes or semiconductor devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00Arrangements for measuring electric power or power factor
    • G01R21/08Arrangements for measuring electric power or power factor by using galvanomagnetic-effect devices, e.g. Hall-effect devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/02Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09Magnetoresistive devices
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems
    • G08C19/02Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F9/00Magnetic amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Description

Vorrichtung zur elektrischen Fernübertragung von Bewegungen an Meßinstrumenten allerArt, wie z. B. bei Manometern, Wasserstandsanzeigern o. dgl. Die Erfindung betrifft eine Vorrichtung, durch welche die Bewegungen eines Körpers, wie z. B. eines Manometers, Wasserstandsanzeigers o. dgl., in einer Geberstelle mit Hilfe eines zwischen den Polen eines Magneten beweglich gelagerten Wismutwiderstandes durch eine elektrische Fernleitung auf eine geeignete Anzeigevorrichtung in einer Empfangsstelle übertragen werden. Durch die Änderung des Widerstandes des Wismuts bei einer Bewegung in einem magnetischen Felde wird ein Ausschlag eines mit ihm verbundenen Galvanometers in der Empfängerstelle verursacht, der proportional der Bewegung des Wismutwiderstandes ist und sich somit ebenfalls proportional der Zeigerbewegung des Meßinstrumentes der Geberstelle verändert.Device for the electrical remote transmission of movements to measuring instruments of all kinds, such as B. with manometers, water level indicators o. The like. The invention relates to a device by which the movements of a body such. B. a manometer, water level indicator or the like, in a transmitter station with the help a bismuth resistor mounted movably between the poles of a magnet through an electrical trunk line to a suitable display device in one Receiving point are transmitted. By changing the resistance of bismuth when moving in a magnetic field, a deflection becomes one with it connected galvanometer in the receiving point, which is proportional to the Move of the bismuth resistance and is therefore also proportional the pointer movement of the measuring instrument of the encoder station changed.

In der Zeichnung ist eine beispielsweise Ausführungsform der Erfindung schematisch dargestellt, und zwar zeigt Abb. i eine Draufsicht, Abb. a eine Seitenansicht, Abb.3 ein Schaltschema.In the drawing is an exemplary embodiment of the invention shown schematically, namely Fig. i shows a plan view, Fig. a shows a side view, Fig.3 a circuit diagram.

In dem Luftspalt b zwischen den Polen eines Magneten a ist ein segmentartig geformter Wismutwiderstand c beweglich gelagert und mit dem die zu übertragende Bewegung ausführenden Körper eines Manometers, Wasserstandsanzeigers o. dgl. fest verbunden. je nach der Bewegung dieses Körpers wird der. Wismutwiderstand in den Luft-.,palt des Magneten hinein- oder aus demselben lierausbewegt.In the air gap b between the poles of a magnet a is a segment-like shaped bismuth resistor c movably mounted and with which the to be transmitted Movement executing body of a manometer, water level indicator or the like. Fixed tied together. depending on the movement of this body becomes the. Bismuth resistance in the Air -., Gap of the magnet moved in or out of it.

Da nun Wismut seinen Widerstand im Magnetfeld ändert, so ist umgekehrt die Größe des Widerstandes abhängig von der jeweiligen Stellung des Wismutwiderstandes im Magnetfeld. Diese Widerstandsänderung wird durch ein auf einer Empfangsstelle befindliches elektrisches Meßinstrument d, das mit einer Stromquelle $ verbunden ist, angezeigt.Since bismuth changes its resistance in the magnetic field, the opposite is true the size of the resistance depends on the respective position of the bismuth resistance in the magnetic field. This change in resistance is caused by an on a receiving point located electrical measuring instrument d, which is connected to a power source $ is displayed.

Bekanntlich besitzt Wismut einen hohen elektrischen Temperaturkoeffizienten, welcher die Meßgenauigkeit beeinflussen würde. Um diesen Fehler zu verringern, wird der Wismutwiderstand zweckmäßig in zwei Stromzweige f und g unterteilt, deren Teilströme ein Anzeigeinstrument (1 durchfließen. Ändert .ich der Widerstand des Wismuts infolge-Temperaturschwankungen, so bleibt trotzdem das Verhältnis der beiden Teilströme stets annähernd konstant, und somit wird -dadurch die Anzeige des Instrumentes nur wenig beeinflußt. Durch die Unterteilung des Wismutwiderstandes in zwei Teile wird also erstens eine Kompensierung des Temperaturkoeffizienten angestrebt und außerdem zweitens eine , höhere Empfindlichkeit der Anzeigevorrichtung erreicht, die sich daraus erklärt, daß sich der eine Zweig aus dem Felde heraus- tqnd der , andere dagegen in das Feld hineinbew egt.It is well known that bismuth has a high electrical temperature coefficient, which would affect the measurement accuracy. To reduce this error, will the bismuth resistor is expediently divided into two current branches f and g, their partial currents Flow through a display instrument (1. If the resistance of the bismuth changes as a result of temperature fluctuations, so the ratio of the two partial flows remains almost constant, and thus the display of the instrument is only slightly affected. By the division of the bismuth resistance into two parts thus firstly becomes a compensation of the temperature coefficient and, secondly, a higher sensitivity reached the display device, which is explained by the fact that the one branch out of the field and who, on the other hand, moves others into the field.

Um den Erfindungsgegenstand näher zu erläutern, sei ein Beispiel aus der Praxis im folgenden beschrieben Der gesamte Apparat besteht aus einecti Geber und einem Empfänger. Der Geber sitzt am Kessel in Formeines normalen Manometers, dessen Zeigerachse i Abb. i 'und rechts'; mit einem Wismutwiderstand c verbunden ist. Entsprechend jeder Bewegung des Manometerzeigers wird dieser Wismutwiderstand zwischen den Polen des konstanten Magneten a bewegt. Da nun bekanntlich Wismut seinen Widerstand im magnetischen Feld ändert, so kann diese wechselnde Leitfähigkeit als Maß für die Zeigerstellung des 'Manometers gelten, wenn dieser Widerstand in bekannter Weise gemessen wird. Die Aufgabe des Messens .erfüllt der Empfänger. Dieser besteht aus einem Galvanometern mit normaler Widerstandsmeßbrücke. Der Wismutwi.derstand bildet -zwei Stromzweige f und g dieser Meßbrücke, welche durch Akkumulatoren gespeist wird. Da sich nun bei jeder Zeigerbewegung des Manometers auf dem Kessel ('des Gebers) der Widerstand des Wismuts ändert, so wird das Gleichgewicht der Meßbrücke des Empfängers mehr oder weniger gestört werden, d. h. also, das Galvanometer ,ändert seinen Ausschlag proportional der Zeigerbewegung und kann deshalb nach kg"%cm2 geeicht werden. Die Verbindung zwischen Geber und Empfänger wird durch beliebig lange Leitungen hergestellt.To explain the subject matter of the invention in more detail, an example is given the practice described below. The entire apparatus consists of a transducer and a recipient. The transmitter sits on the boiler in the form of a normal manometer, whose pointer axis i Fig. i 'and right'; connected to a bismuth resistor c is. This bismuth resistance becomes corresponding to every movement of the pressure gauge pointer moved between the poles of the constant magnet a. As is well known, bismuth is its Resistance in the magnetic field changes, so this changing conductivity can be called Measure for the pointer position of the 'manometer apply if this resistance is in known Way is measured. The task of measuring is performed by the recipient. This exists from a galvanometer with a normal resistance bridge. The bismuth resistor forms two branches f and g of this measuring bridge, which are fed by accumulators will. Since with every pointer movement of the manometer on the boiler ('of the sender) the resistance of the bismuth changes, so the equilibrium of the measuring bridge of the receiver are more or less disturbed, d. H. so, the galvanometer, changes its deflection proportional to the movement of the pointer and can therefore be calibrated according to kg "% cm2. The The connection between the transmitter and receiver is established using cables of any length.

Claims (1)

PATENTANSPRÜCHE: i. Vorrichtung zur elektrischen Fernübertragung von Bewegungen an -Meßinstrumenten aller Art, wie z. B. bei Manometern, Wasserstandsanzeigern o. dgl., dadurch gekennzeichnet, daß der die zu übertragende Bewegung ausführende Zeiger mit einem einen elektrischen Widerstand bildenden Körper aus Wismut verbunden ist, das wegen der Änderung seines Widerstandes bei der Bewegung in einem konstanten Magnetfelde einen Ausschlag eines mit ihm verbundenen Galvanometers in der Empfängerstelle verursacht, der proportional der Bewegung des Wismutwiderstandes ist und sich somit ebenfa114 proportional der Zeigerbewegung des Meßinstrümentes der Geberstelle verändert. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß der zur Kompensierung des Temperaturkoeffizienten des Wismuts zwei Stromzweige bildet, in denen ein Arizeigei.nstrument das Verhältnis der elektrischen Ströme in den beiden Zweigen mißt, wodurch der Temperaturkoeffizient des Wismuts annähernd kompensiert und außerdem eine höhere Empfindlichkeit des Arizeigeinstruments dadurch erzielt wird, daß der eine Zweig aus dem Felde heraus- und der andere in es hineinhewegt wird. PATENT CLAIMS: i. Device for the electrical remote transmission of movements to measuring instruments of all kinds, such as B. with manometers, water level indicators o. The like., Characterized in that the movement to be transmitted executing pointer is connected to an electrical resistance forming body made of bismuth, which because of the change in its resistance when moving in a constant magnetic field a deflection caused by the galvanometer connected to it in the receiver point, which is proportional to the movement of the bismuth resistor and thus also changes proportionally to the pointer movement of the measuring instrument of the transmitter point. Device according to claim i, characterized in that the one for compensating the temperature coefficient of the bismuth forms two current branches in which an Arizeigei.nstrument measures the ratio of the electrical currents in the two branches, whereby the temperature coefficient of the bismuth approximately compensates and also a higher sensitivity of the Arizeigeinstruments is achieved by moving one branch out of the field and the other into it.
DESCH68589D 1923-09-09 1923-09-09 Device for the electrical remote transmission of movements on measuring instruments of all kinds, such. B. with manometers, water level indicators o. Expired DE409318C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH68589D DE409318C (en) 1923-09-09 1923-09-09 Device for the electrical remote transmission of movements on measuring instruments of all kinds, such. B. with manometers, water level indicators o.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH68589D DE409318C (en) 1923-09-09 1923-09-09 Device for the electrical remote transmission of movements on measuring instruments of all kinds, such. B. with manometers, water level indicators o.

Publications (1)

Publication Number Publication Date
DE409318C true DE409318C (en) 1925-02-04

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DESCH68589D Expired DE409318C (en) 1923-09-09 1923-09-09 Device for the electrical remote transmission of movements on measuring instruments of all kinds, such. B. with manometers, water level indicators o.

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415985A (en) * 1942-03-12 1947-02-18 Bendix Aviat Corp Permanent magnet telemetric system
US2536805A (en) * 1947-08-16 1951-01-02 Gen Electric Hall effect telemetering transmitter
US2587193A (en) * 1947-09-30 1952-02-26 Rca Corp Computing device
DE1025157B (en) * 1954-01-29 1958-02-27 Siemens Ag Electrical measuring device based on the change in electrical properties that a semiconductor body experiences under the action of a magnetic field
DE973121C (en) * 1952-11-13 1959-12-03 Siemens Ag Electrical measuring device based on the change in the electrical properties that a semiconductor body experiences under the action of a magnetic field
DE1125521B (en) * 1960-09-22 1962-03-15 Siemens Ag Device for the automatic steering of vehicles along a guideline
DE1281323B (en) * 1960-12-13 1968-10-24 Siemens Ag Magnetic probe for presence indicator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415985A (en) * 1942-03-12 1947-02-18 Bendix Aviat Corp Permanent magnet telemetric system
US2536805A (en) * 1947-08-16 1951-01-02 Gen Electric Hall effect telemetering transmitter
US2587193A (en) * 1947-09-30 1952-02-26 Rca Corp Computing device
DE973121C (en) * 1952-11-13 1959-12-03 Siemens Ag Electrical measuring device based on the change in the electrical properties that a semiconductor body experiences under the action of a magnetic field
DE1025157B (en) * 1954-01-29 1958-02-27 Siemens Ag Electrical measuring device based on the change in electrical properties that a semiconductor body experiences under the action of a magnetic field
DE1125521B (en) * 1960-09-22 1962-03-15 Siemens Ag Device for the automatic steering of vehicles along a guideline
DE1281323B (en) * 1960-12-13 1968-10-24 Siemens Ag Magnetic probe for presence indicator

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