DE278316C - - Google Patents

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Publication number
DE278316C
DE278316C DENDAT278316D DE278316DA DE278316C DE 278316 C DE278316 C DE 278316C DE NDAT278316 D DENDAT278316 D DE NDAT278316D DE 278316D A DE278316D A DE 278316DA DE 278316 C DE278316 C DE 278316C
Authority
DE
Germany
Prior art keywords
vacuum
bell
microphone
measured
instrument
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.)
Active
Application number
DENDAT278316D
Other languages
German (de)
Publication of DE278316C publication Critical patent/DE278316C/de
Active legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/42—Measurement or testing during manufacture
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/668—Means for obtaining or monitoring the vacuum
    • H01H2033/6686—Means for obtaining or monitoring the vacuum by emitting and receiving reflected sound or ultrasound signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Sampling And Sample Adjustment (AREA)

Description

Paten τ-Ansprüche:Sponsorship τ claims:

1. Einrichtung zur technischen Messung von hohem Vakuum, dadurch gekennzeichnet, daß im Innern einer mit dem zu untersuchenden Räume dauernd in Verbindung stehenden Vakuumröhre ein elektrisch-akustischer Signalapparat (Glocke, Klingel, Summer o. dgl.) und ein akustischelektrischer Aufnahmeapparat (Mikrophon o. dgl.) angeordnet sind.1. Device for technical measurement of high vacuum, characterized in that that inside a vacuum tube which is permanently connected to the room to be examined electric-acoustic signaling device (bell, bell, buzzer, etc.) and an acoustic-electric recording device (microphone o. The like.) Are arranged.

2. Einrichtung nach Anspruch 1, gekennzeichnet durch die elastische Aufhängung von Geber und Empfänger.2. Device according to claim 1, characterized by the elastic suspension of giver and recipient.

3. Einrichtung nach Anspruch 1 und 2, gekennzeichnet durch induktive Beeinflussung des Gebers.3. Device according to claim 1 and 2, characterized by inductive influencing of the giver.

4. Einrichtung nach Anspruch 1 bis 3, gekennzeichnet durch die Verwendung von Relais, beispielsweise Liebenröhren, zur Veränderung des Meßbereiches.4. Device according to claim 1 to 3, characterized through the use of relays, for example love tubes, to change the measuring range.

5. Einrichtung nach Anspruch 1 bis 4, gekennzeichnet durch Mittel, um die Eichung mittels Kompressionsinstrumentes zu ermöglichen.5. Device according to claim 1 to 4, characterized by means to the To enable calibration using a compression instrument.

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Zur Messung des Vakuums bei Entladungsröhren, Glühlampen, Quecksilberdampf apparaten u. dgl. hat man bisher meistens das von M cLe ο d vorgeschlagene Kompressionsinstrument benutzt. Der Nachteil dieses Apparates besteht darin, daß eine kontinuierliche Ablesung nicht möglich ist, da die Messung auf der Feststellung der Zusammendrückbarkeit eines von dem zu messendenFor measuring the vacuum in discharge tubes, incandescent lamps, mercury vapor devices and the like. So far, the compression instrument proposed by M cLe o d has mostly been used used. The disadvantage of this device is that a continuous reading is not possible because the Measurement based on the determination of the compressibility of one of the to be measured ίο Gase abgetrennten Gasquantums beruht.ίο Gases separated gas quantum is based. Gemäß der Erfindung wird zur Messung des Vakuums die bekannte Tatsache benutzt, daß sich der Schall im absoluten Vakuum nicht fortpflanzt.According to the invention, the known fact is used to measure the vacuum, that sound does not propagate in an absolute vacuum. Die Zeichnung zeigt schematisch die neue Meßeinrichtung.The drawing shows schematically the new measuring device. Es bezeichnet ä eine Vakuumröhre, die mit dem zu messenden Vakuumgefäß mittels des Rohrstutzens b verbunden werden kann, c ist eine elektrische Glocke, Klingel, Summer o. dgl., d ein Mikrophon.It designates like a vacuum tube, which can be connected b with the measured vacuum vessel by means of the pipe socket, c is an electric bell, bell, buzzer o. The like., That a microphone. Glocke und Mikrophon sind derart elastisch an den Gefäßwandungen aufgehängt, daß akustisch wahrnehmbare Schwingungen nicht übertragen werden. Ebenso werden die Zuleitungsdrähte derart biegsam ausgeführt, daß eine direkte Übertragung der Schwingungen möglichst vermieden wird.The bell and microphone are so resiliently suspended from the walls of the vessel that acoustically perceptible vibrations are not transmitted. Likewise are the lead wires made so flexible that a direct transmission of the vibrations is avoided as much as possible. Vorteilhaft kann man die Anschläge der Glocke induktiv hervorrufen, so daß eine Stromzuführung ins Innere des Vakuums an dieser Stelle nicht erforderlich ist (Fig. 2).Advantageously, you can induce the stops of the bell inductively, so that a Power supply to the interior of the vacuum is not required at this point (Fig. 2). Die Mikrophonströme werden durch ein passendes Instrument, Oszillographen, Kathodenröhre o. dgl., abgelesen bzw. registriert.The microphone currents are measured through a suitable instrument, oscilloscope, cathode tube or the like, read or registered. Zur Verstärkung der Mikrophonströme und zur Veränderung des Meßbereiches können Relais bekannter Art, beispielsweise Liebenröhren, verwendet werden, die gegebenenfalls auch in größerer Anzahl in Reihe geschaltet sein können. Die Eichung des Instrumentes erfolgt mittels eines Kompressionsapparates. Hierfür wird zweckmäßig ein besonderer Rohrstutzen e vorgesehen.To amplify the microphone currents and to change the measuring range, relays of a known type, for example Liebenröhren, can be used, which, if necessary, can also be connected in series in larger numbers. The instrument is calibrated using a compression device. A special pipe socket e is expediently provided for this purpose.
DENDAT278316D Active DE278316C (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527208A (en) * 1944-07-27 1950-10-24 Gen Electric Supersonic testing apparatus
US2536025A (en) * 1945-04-14 1951-01-02 Crystal Res Lab Inc Piezoelectric interferometer system
US2800796A (en) * 1952-08-05 1957-07-30 Trans Souics Inc Pressure measuring device
DE3214672A1 (en) * 1981-04-22 1982-11-25 Ford-Werke AG, 5000 Köln METHOD AND DEVICE FOR MEASURING THE ABSOLUTE PRESSURE IN A GAS
DE19526394A1 (en) * 1995-07-19 1997-01-23 Siemens Ag Vacuum detection system for vacuum switch tube

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527208A (en) * 1944-07-27 1950-10-24 Gen Electric Supersonic testing apparatus
US2536025A (en) * 1945-04-14 1951-01-02 Crystal Res Lab Inc Piezoelectric interferometer system
US2800796A (en) * 1952-08-05 1957-07-30 Trans Souics Inc Pressure measuring device
DE3214672A1 (en) * 1981-04-22 1982-11-25 Ford-Werke AG, 5000 Köln METHOD AND DEVICE FOR MEASURING THE ABSOLUTE PRESSURE IN A GAS
DE19526394A1 (en) * 1995-07-19 1997-01-23 Siemens Ag Vacuum detection system for vacuum switch tube

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