DE278316C - - Google Patents
Info
- 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
Links
- 238000007906 compression Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (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)
Publications (1)
Publication Number | Publication Date |
---|---|
DE278316C true DE278316C (en) |
Family
ID=534328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT278316D Active DE278316C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE278316C (en) |
Cited By (5)
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 |
-
0
- DE DENDAT278316D patent/DE278316C/de active Active
Cited By (5)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE58906755D1 (en) | Pressure measuring catheter. | |
DE278316C (en) | ||
Pratt et al. | The measurement of the acoustic impedance of brass instruments | |
IT1108768B (en) | MAXIMUM INDICATOR DEVICE FOR DIAL MEASURING INSTRUMENTS, PARTICULARLY DEPTH GAUGES AND MEASURING INSTRUMENT PROVIDED WITH THE DEVICE | |
DE825177C (en) | Vacuum gauge | |
Edmonds et al. | Dynamic Characteristics of Air‐Pressure Measuring Systems Used in Speech Research | |
GB1476015A (en) | Pressure and temperature sensors | |
DE2533078A1 (en) | Indirectly coupled press. gauge for pipelines - has strain gauge clamped to pipe exterior to measure internal press. | |
JPS5937418A (en) | Apparatus for measuring length using ultrasonic delay line | |
GB757597A (en) | Improvements in or relating to apparatus for measuring fluid pressure | |
DE420676C (en) | Device for displaying and measuring gas mixtures with measuring branches arranged side by side in a Wheatstone bridge arrangement | |
DE237635C (en) | ||
US1403384A (en) | Pulse amplifier | |
GB885301A (en) | Noise-testing means for mechanical systems and more particularly gearboxes for motor vehicles | |
Rodin | When Josquin Became Josquin | |
SU815536A1 (en) | Device for measuring pressure drop with static compensation | |
CN204468046U (en) | There is the intradiscal pressure force test device of digital displaying function | |
FR2358652A1 (en) | Monitoring properties esp. pH of aq. solns. - using photodetector measuring monochromatic light transmission rate through the soln. | |
GB466073A (en) | Improvements in apparatus for testing sparking plug cables and pressure indicators | |
DE935508C (en) | Measuring device for glass electrodes | |
ITVA930020U1 (en) | NEW METHOD FOR CALIBRATION OF PRESSURE GAUGES AND DIAL MEASURING INSTRUMENTS IN GENERAL | |
Hillman et al. | A new procedure for venting a reflectionless tube | |
GB190911292A (en) | Improvements in and relating to Blood Pressure or Pulse Meters. | |
HU198248B (en) | Method for non-destructive qualitive controlling carbon products | |
US2031924A (en) | Method and means for measuring dynamic characteristics |