DE448907C - Arrangement for controlling a secondary electrical counting, measuring, registering or regulating device with a primary measuring instrument - Google Patents
Arrangement for controlling a secondary electrical counting, measuring, registering or regulating device with a primary measuring instrumentInfo
- Publication number
- DE448907C DE448907C DEA44424D DEA0044424D DE448907C DE 448907 C DE448907 C DE 448907C DE A44424 D DEA44424 D DE A44424D DE A0044424 D DEA0044424 D DE A0044424D DE 448907 C DE448907 C DE 448907C
- Authority
- DE
- Germany
- Prior art keywords
- primary
- measuring
- arrangement
- registering
- controlling
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B1/00—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values
- G05B1/01—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
- G05B1/04—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric with sensing of the position of the pointer of a measuring instrument
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Description
Anordnung zur Steuerung eines sekundären elektrischen Zähl-, ließ-, Registrier-oder Regulierapparats mit einem primären meßinstrument. Es ist bekannt, einen sekundären elektrischen Meßapparat mit einem primären Meßinstrument zu steuern, bei dem ein Zeiger o. dgl. des letzteren periodisch auf einem Regelwiderstand im Stromkreis des sekundären Apparates Kontakt macht.Arrangement for controlling a secondary electrical counting, let-, Registering or regulating apparatus with a primary measuring instrument. It is known, to control a secondary electrical measuring apparatus with a primary measuring instrument, in which a pointer or the like of the latter periodically on a variable resistor im Secondary apparatus circuit makes contact.
Nach der Erfindung wird diese periodische Bewegung des Zeigers von einer unabhängigen Bewegungsquelle bewirkt, beispielsweise von einem Uhrwerk oder einem Svnchrotiniotor. Dabei soll der Antrieb gleichmäßig so erfolgen, daß sowohl die Kontaktfrequenz als auch die Kontaktdauer konstant sind, damit das angeschlossene Sekundärinstrument i. B. ein Zähler, richtig über den zeitlichen Verlauf der Stromimpulse registriert. Bei Verwendung von Registrierinstrumenten ist es eine Vereinfachung, wenn die Trommel des Registrierapparates von der gleichen Be-,vegungsquelle angetrieben wird wie der bewegliche Kontaktapparat.According to the invention, this periodic movement of the pointer of caused by an independent source of movement, for example from a clockwork or a Svnchrotiniotor. The drive should take place evenly so that both the contact frequency as well as the contact duration are constant so that the connected Secondary instrument i. B. a counter, correctly about the timing of the current pulses registered. When using registration instruments, it is a simplification, when the drum of the recorder is driven by the same source of motion becomes like the movable contact apparatus.
Damit der Zähler auch richtig über den zeitlichen Verlauf der primären zu messenden Größe integriert, ist es nötig, daß die einzelnen Stromimpulse der letzteren- stets proportional sind. Dies läßt sich durch passende Stufung ..des Widerstandes stets erreichen, und zwar auch dann, wenn die Ausschläge des Zeigers der primären zu messenden Größe nicht proportional sind, sondern nach irgendeinem anderen Gesetz von ihr abhängen.So that the counter is also correct about the temporal course of the primary integrated to be measured, it is necessary that the individual current pulses of the the latter are always proportional. This can be done by appropriate grading ..des Always achieve resistance, even when the pointer deflects are not proportional to the primary quantity to be measured, but to any one other law depend on it.
Idieraus ergibt sich eine weitere Anwendungsmöglichkeit der Erfindung. Sie ermöglicht es, auch für solche Meßgrößen zeitlich integrierende Instrumente zu verwenden, mit denen es an sich nicht möglich ist, ein der Meßgröße proportionales Drehmoment zu erzeugen. Als Beispiel möge ein Amperestundenzähler für Wechselstrom genannt sein.This results in a further possible application of the invention. It makes it possible to use time-integrating instruments for such measured quantities to use, with which it is not possible to use one proportional to the measured variable To generate torque. As an example, consider an ampere-hour meter for alternating current be called.
Umgekehrt gestattet die Erfindung, mit solchen Meßgrößen, die an sich Meßinstruinente mit proportionaler Skala, z. B. Wattmeter bedingen, andei e Skalen, etwa quadratische zu erzielen, was z. B. dann von Wichtigkeit sein kann, wenn eine quadratische Addition zweier 1leßgrößen vorgenommen «-erden soll, wenn man etwa eine elektrische Wirkleistung mit der entsprechenden Blindleistung quadratisch addieren will, um die Scheinleistung zu erhalten.Conversely, the invention allows, with such measured variables, which per se Measuring instruments with a proportional scale, e.g. B. require wattmeters, andei e scales, to achieve approximately square, which z. B. can be of importance when a quadratic addition of two measured quantities should be undertaken, if one is for example add an electrical real power to the square of the corresponding reactive power want to get the apparent power.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA44424D DE448907C (en) | 1924-02-12 | 1924-02-12 | Arrangement for controlling a secondary electrical counting, measuring, registering or regulating device with a primary measuring instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA44424D DE448907C (en) | 1924-02-12 | 1924-02-12 | Arrangement for controlling a secondary electrical counting, measuring, registering or regulating device with a primary measuring instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
DE448907C true DE448907C (en) | 1927-08-31 |
Family
ID=6934200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA44424D Expired DE448907C (en) | 1924-02-12 | 1924-02-12 | Arrangement for controlling a secondary electrical counting, measuring, registering or regulating device with a primary measuring instrument |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE448907C (en) |
-
1924
- 1924-02-12 DE DEA44424D patent/DE448907C/en not_active Expired
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