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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
-
- 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
- G01D5/18—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 effective impedance of discharge tubes or semiconductor devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/08—Arrangements for measuring electric power or power factor by using galvanomagnetic-effect devices, e.g. Hall-effect devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F9/00—Magnetic 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)
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 |
Family
ID=7439444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE409318C (en) |
Cited By (7)
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 |
-
1923
- 1923-09-09 DE DESCH68589D patent/DE409318C/en not_active Expired
Cited By (7)
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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