DE825177C - Vacuum gauge - Google Patents

Vacuum gauge

Info

Publication number
DE825177C
DE825177C DEP48412A DEP0048412A DE825177C DE 825177 C DE825177 C DE 825177C DE P48412 A DEP48412 A DE P48412A DE P0048412 A DEP0048412 A DE P0048412A DE 825177 C DE825177 C DE 825177C
Authority
DE
Germany
Prior art keywords
sound
vacuum gauge
pressure
air
coil
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
DEP48412A
Other languages
German (de)
Inventor
Berthold Wald
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.)
BERTHOLD WALD
Original Assignee
BERTHOLD WALD
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 BERTHOLD WALD filed Critical BERTHOLD WALD
Priority to DEP48412A priority Critical patent/DE825177C/en
Application granted granted Critical
Publication of DE825177C publication Critical patent/DE825177C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges
    • G01L21/08—Vacuum gauges by measuring variations in the transmission of acoustic waves through the medium, the pressure of which is to be measured

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Description

Die nachfolgende beschriebene Erfindung ist ein Manometer zur genauen Druckbestimmung im Bereich von 800 bis 0,I Torr (Totaldruckmanometer). The invention described below is a pressure gauge for accurate Pressure determination in the range from 800 to 0.1 Torr (total pressure manometer).

Das Gerät ersetzt die zuwenig empfindlichen Zeigermanometer, Vakuskope und alle mit Hg ar-I>eiteqden Barometer und dient hauptsächlich zur Messung des Edelgasfülldruckes bei der Fal>rikation von Neonleuchtröhren, Glühlampen, Glimmlampen, Glühkathoden- und Glimmgleichrichtern usw. The device replaces the insufficiently sensitive pointer manometers and vacuscopes and all with Hg ar-I> eiteqden barometer and is mainly used to measure the Noble gas filling pressure in the case of the false ration of neon tubes, incandescent lamps, glow lamps, Hot cathode and glow rectifiers, etc.

Als NIeßprinzip ist die allgemein bekannte physikalische Tatsache der Schallausbreitung in Luft und Gasen zugrunde gelegt. Wie bekannt, kann der von einem Schallerzeuger ausgehende Schall dadurch unhörbar gemacht werden, daß man den Schallerzeuger in einen Raum bringt, aus dem die Luft (ein Gasgemisch) entfernt wird. The well-known physical fact is the principle of zero measurement based on the propagation of sound in air and gases. As is known, the Sound emanating from a sound generator can be made inaudible by brings the sound generator into a room from which the air (a gas mixture) is removed will.

Vorliegende Erfindung ist nun wie folgt aufgehaut: Ein Rohr R ist beiderseits mit Flanschen F versehen und besitzt in der Mitte einen Pumpstutzen F. An den beiden Flanschen von R ist jeweils ein System nach Art der permanentdynamischen Lautsprecher bzw. Tauchspulenmikrofone aufgesetzt, die mit ihren Membranen Mbt und Mb2 den Raum R beiderseits begrenzen. Den luftdichten Abschluß bilden die Kappen Ks und K2. Der Stutzen P wird mit der auszupumpenden bzw. mit Edelgas zu füllenden Apparatur verbunden. An die Enden der Spule Sl. die Klemmen 1 und 2 wird eine Wechselspannung gelegt. wodurch die Tauchspule mit der damit verbundenen nfemhran im Feld des Magnets M1 zu Schwingungen in der Frequenz der angelegten Wechselspannung erregt wird. Der Schall pflanzt sich nun in R fort und erregt Mb2, wodurch in S2 durch Schnitt der Kraftlinien von M2 ein Wechselstrom erzeugt wird, der durch das an den Klemmen 3 und 4 liegende Instrument angezeigt wird. The present invention is now structured as follows: A pipe R is Provided with flanges F on both sides and has a pump nozzle in the middle F. On each of the two flanges of R there is a system of the permanent dynamic type Loudspeakers or moving coil microphones attached, with their membranes Mbt and Mb2 delimit space R on both sides. The caps form the airtight seal Ks and K2. The nozzle P is to be pumped out or filled with inert gas Apparatus connected. At the ends of the coil Sl. the terminals 1 and 2 is an alternating voltage placed. causing the plunger coil with the associated nfemhran in the field of the magnet M1 is excited to oscillate in the frequency of the applied alternating voltage. Of the Sound now propagates in R and excites Mb2, whereby in S2 by cutting the Lines of force from M2 an alternating current is generated, which through the at the terminals 3 and 4 instrument lying down is displayed.

Die Erregung des zweiten Systems (Mikrofon) ist hiermit in Abhängigkeit zum in R herrschenden Luftdruck gebracht, und der Ausschlag des Instruments an 3 und 4 ist ein direktes Anlaß für, den in R herrschenden Druck. The excitation of the second system (microphone) is dependent on this brought to the air pressure prevailing in R, and the deflection of the instrument at 3 and 4 is a direct cause for the pressure prevailing in R.

PATENTANSPROCHE: 1. Vakuummeter, dadurch gekennzeichnet, daß in einem Raum, in dem der messende Druck herrscht, einer konstanten Schallquelle ein Schallempfänger gegenübersteht, der den aufgenommenen Schall in einen elektrischen Wechselstrom verwandelt, dessen Stärke gemessen wird. PATENT APPROACH: 1. Vacuum meter, characterized in that in one Room in which the measuring pressure prevails, a constant sound source a sound receiver is opposite, which converts the recorded sound into an alternating electrical current transformed whose strength is measured.

Claims (1)

2. Vakuummeter nach Anspruch I, dadurch gekennzeichnet, daß als Schallquelle und Schallempfänger zwei gleichartige Lautsprechersysteme verwendet werden. 2. Vacuum meter according to claim I, characterized in that as a sound source and sound receiver two identical loudspeaker systems are used.
DEP48412A 1949-07-10 1949-07-10 Vacuum gauge Expired DE825177C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP48412A DE825177C (en) 1949-07-10 1949-07-10 Vacuum gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP48412A DE825177C (en) 1949-07-10 1949-07-10 Vacuum gauge

Publications (1)

Publication Number Publication Date
DE825177C true DE825177C (en) 1951-12-17

Family

ID=7383052

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP48412A Expired DE825177C (en) 1949-07-10 1949-07-10 Vacuum gauge

Country Status (1)

Country Link
DE (1) DE825177C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010297B (en) * 1953-02-26 1957-06-13 Atlas Werke Ag Device for monitoring the properties of a medium by measuring the phase shift of acoustic waves
US2800796A (en) * 1952-08-05 1957-07-30 Trans Souics Inc Pressure measuring device
US2891400A (en) * 1955-02-18 1959-06-23 Austin N Stanton Fluid density transducers
US2952153A (en) * 1955-12-12 1960-09-13 Cons Electrodynamics Corp Acoustical apparatus for gas detection
US3019656A (en) * 1956-04-20 1962-02-06 Atomic Energy Authority Uk Pressure gauges
US3425281A (en) * 1965-01-15 1969-02-04 Leybold Holding Ag Vacuum gauge apparatus
DE3214672A1 (en) * 1981-04-22 1982-11-25 Ford-Werke AG, 5000 Köln METHOD AND DEVICE FOR MEASURING THE ABSOLUTE PRESSURE IN A GAS

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800796A (en) * 1952-08-05 1957-07-30 Trans Souics Inc Pressure measuring device
DE1010297B (en) * 1953-02-26 1957-06-13 Atlas Werke Ag Device for monitoring the properties of a medium by measuring the phase shift of acoustic waves
US2891400A (en) * 1955-02-18 1959-06-23 Austin N Stanton Fluid density transducers
US2952153A (en) * 1955-12-12 1960-09-13 Cons Electrodynamics Corp Acoustical apparatus for gas detection
US3019656A (en) * 1956-04-20 1962-02-06 Atomic Energy Authority Uk Pressure gauges
US3425281A (en) * 1965-01-15 1969-02-04 Leybold Holding Ag Vacuum gauge apparatus
DE3214672A1 (en) * 1981-04-22 1982-11-25 Ford-Werke AG, 5000 Köln METHOD AND DEVICE FOR MEASURING THE ABSOLUTE PRESSURE IN A GAS

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