DE403304C - Remote display device for barometers, manometers and other measuring instruments that work with a movable mercury column which short-circuits an electrical resistance in its longitudinal direction - Google Patents

Remote display device for barometers, manometers and other measuring instruments that work with a movable mercury column which short-circuits an electrical resistance in its longitudinal direction

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Publication number
DE403304C
DE403304C DES63090D DES0063090D DE403304C DE 403304 C DE403304 C DE 403304C DE S63090 D DES63090 D DE S63090D DE S0063090 D DES0063090 D DE S0063090D DE 403304 C DE403304 C DE 403304C
Authority
DE
Germany
Prior art keywords
barometers
electrical resistance
short
circuits
display device
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
DES63090D
Other languages
German (de)
Inventor
Dr-Ing Max Moeller
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES63090D priority Critical patent/DE403304C/en
Application granted granted Critical
Publication of DE403304C publication Critical patent/DE403304C/en
Expired legal-status Critical Current

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Description

Fernanzeigevorrichtung für Barometer, Iffanometer und andere IVIeßinstrumente, die mit einer beweglichen Quecksilbersäule arbeiten, welche einen in ihrer Längsrichtung liegenden elektrischen Widerstand kurzschließt. Barometer, Manometer und ähnliche Meßinstrumente, die mit einer beweglichen Quecksilbersäule arbeiten, können dadurch zur Fernanzeige eingerichtet werden, daß man längs des Weges des Ouecksilberfadens einen elektrischen WiderstanCanordnet. Durch die Quecksilbersäule wird nach ihrer Stellung ein größeres oder kleineres Stück des Widerstandes kurzgeschlossen, und diese Widerstandsänderung kann an einem Meßinstrument abgelesen werden, das an beliebiger Stelle auch in größerer Entfernung aufgestellt werden kann.Remote display device for barometers, Iffanometers and other IV measuring instruments, who work with a movable column of mercury, which one in their longitudinal direction short-circuits lying electrical resistance. Barometers, pressure gauges and the like Measuring instruments that work with a movable mercury column can thereby to be set up for remote indication that one is along the path of the mercury thread arranges an electrical resistor. Through the column of mercury is after their Position a larger or smaller piece of the resistor short-circuited, and this change in resistance can be read on a measuring instrument that can be read on any Place can also be set up at a greater distance.

Gemäß der Erfindung wird als elektrischer Widerstand ein Draht aus Platin-Iridium verwendet. Diese Legierung hat vor dem reinen Platin den ausscl-daggebenden Vorteil, daß sie vom Quecksilber nicht angegriffen wird und außerdem nur einen sehr geringen Temperaturkoeffizienten hat. Dabei wird die Oberfläche des Platin-Iridium-Drahtes vom Quecksilber so gut benetzt, daß störende Übergangswiderstände nicht auftreten; dadurch ist eine eindeutige Fernanzeige gewährleistet.According to the invention, a wire is used as the electrical resistance Used platinum iridium. This alloy has the decisive factor over pure platinum The advantage is that it is not attacked by the mercury and, moreover, only a very large one has a low temperature coefficient. This is the surface of the platinum-iridium wire so well wetted by the mercury that interfering contact resistances do not occur; this ensures a clear remote display.

Der Quecksilberfaden bewegt sieh -vorzugsweise in einem Glasrohr, das den Platin-Iridiumdraht enthält. Dabei kann entweder der Ouecksilberfaden im feststehenden Rohr sich bewegen, oder der Quecksilberfaden bleibt in Ruhe, und das Rohr mit dem elektrischenN#_iderstand wird bewegt. Wird das Rohr kreisförmig in sich geschlossen und mit dem Platin-Iridiumdraht um seinen Krümmungsmittelpunkt gedreht, so ist die Größe des gemessenen Widerstandes ein Maß für den Drehungswinkel. Die Vorrichtung eignet sich also auch zur Fernanzeige der Winkelstellung eines Maschinenteils oder eines Zeigers. Hierbei ist Platin-Iridium auch deshalb vorteilhafter als reines Platin, weil es härter ist und daher infolge der besseren Steifigkeit weniger Unterstützungen innerhalb des Rohres braucht.The mercury thread moves - preferably in a glass tube, which contains the platinum-iridium wire. Either the silver thread in the stationary pipe move, or the mercury thread remains at rest, and that The pipe with the electrical resistance is moved. If the pipe becomes circular in closed and with the platinum-iridium wire around its center of curvature rotated, the size of the measured resistance is a measure of the angle of rotation. The device is therefore also suitable for remote display of the angular position of a machine part or a pointer. This is one of the reasons why platinum-iridium is more advantageous than pure iridium Platinum because it is harder and therefore less supports due to the better rigidity needs inside the pipe.

Auch andere Metalle verbessern die bei der Erfindung in Frage kommenden Eigenschaften des Platins in ähnlicher, wenn auch nicht so vollkommener Weise wie Iridium.Other metals also improve those in question in the invention Properties of platinum in a similar, if not as perfect, way as Iridium.

Claims (1)

PATrNT-ANSPRUCI-1: Fernanzeigevorrichtung für Barometer, Manometer und andere Meßinstrumente, die mit einer beweglichen Quecksilbersäule arbeiten, welche einen in ihrer Längsrichtung 'liegenden elektrischen M iderstand kurzschließt, dadurch gekennzeichnet, daß der elektrische Widerstand aus einer Legierung des Platins, vorzugsweise aus Platin-Iridium, besteht.PATrNT-ANSPRUCI-1: A remote display device for barometers, pressure gauges and other measuring instruments that operate with a movable mercury which esistance short-circuits a 'lying in its longitudinal direction electrical M, characterized in that the electrical resistance of an alloy of platinum, preferably platinum -Iridium.
DES63090D 1923-06-13 1923-06-13 Remote display device for barometers, manometers and other measuring instruments that work with a movable mercury column which short-circuits an electrical resistance in its longitudinal direction Expired DE403304C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES63090D DE403304C (en) 1923-06-13 1923-06-13 Remote display device for barometers, manometers and other measuring instruments that work with a movable mercury column which short-circuits an electrical resistance in its longitudinal direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES63090D DE403304C (en) 1923-06-13 1923-06-13 Remote display device for barometers, manometers and other measuring instruments that work with a movable mercury column which short-circuits an electrical resistance in its longitudinal direction

Publications (1)

Publication Number Publication Date
DE403304C true DE403304C (en) 1924-09-29

Family

ID=7496120

Family Applications (1)

Application Number Title Priority Date Filing Date
DES63090D Expired DE403304C (en) 1923-06-13 1923-06-13 Remote display device for barometers, manometers and other measuring instruments that work with a movable mercury column which short-circuits an electrical resistance in its longitudinal direction

Country Status (1)

Country Link
DE (1) DE403304C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641924A (en) * 1947-09-11 1953-06-16 Socony Vacuum Oil Co Inc Determination of effective porosity of core samples

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641924A (en) * 1947-09-11 1953-06-16 Socony Vacuum Oil Co Inc Determination of effective porosity of core samples

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