DE2711620A1 - Hose water level with electric level display - has measuring tubes, each with two electrodes forming capacitor with capacitance dependent on level of liq. (OE 16.4.77) - Google Patents

Hose water level with electric level display - has measuring tubes, each with two electrodes forming capacitor with capacitance dependent on level of liq. (OE 16.4.77)

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Publication number
DE2711620A1
DE2711620A1 DE19772711620 DE2711620A DE2711620A1 DE 2711620 A1 DE2711620 A1 DE 2711620A1 DE 19772711620 DE19772711620 DE 19772711620 DE 2711620 A DE2711620 A DE 2711620A DE 2711620 A1 DE2711620 A1 DE 2711620A1
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Germany
Prior art keywords
level
measuring
measuring tubes
liquid
hose
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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.)
Pending
Application number
DE19772711620
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German (de)
Inventor
Franz Wittmann
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Individual
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Individual
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Publication of DE2711620A1 publication Critical patent/DE2711620A1/en
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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/04Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/268Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The liquid level is displayed in two vessels in the form of measuring tubes connected to a hose. Two insulated electrodes (6) are provided in each measuring tube (1). Their length corresponds to the tube measurement range. They form together a capacitor whose capacitance is determined by the liquid level. The two equal or different capacitances are compared and evaluated in a common electronic measurement and amplifying unit (8) connected to an electric display unit (9). The technique depened on the difference between the dielectric constant of the liquid and the air which takes the place of the liquid under low level conditions.

Description

Schlauchwasserwaage mit elektrischer Niveauanzeige Die Erfindung betrifft eine Schlauchwasserwaage mit elektrischer Niveauanzeige der Flüssigkeitsspiegel in zwei Flüssigkeitsgefäßen in Form von Meßrohren, welche in Füßen bzw. Halterungen befestigt und über diese mit einem mit einem Schlauch kommunizierend verbunden sind. Hose spirit level with electric level indicator The invention relates to a hose level with an electrical level indicator of the liquid level in two liquid vessels in the form of measuring tubes, which are in feet or brackets attached and connected via this with a communicating with a hose.

Die Schlauchchwasserwaagen üblicher Bauart bestehen im wesentlichen aus zwei, mittels eines Schauches kommunizierend verbundenen, transparenten Meßrohren aus Gl;s oder Plexiglas, in welchen der Stand des Flüssigkeitsspiegel gegenüber einer Marke oder Skala beobachtet werden kann Das Messen mit dicSFjr Ausführung einer Schlauchwasserwaage ist relativ umständlich, da bei@@@ ergleich der Flüssigkeitsspiegel in den beiden Meßnonren, der Missigkeitsspiegel in dem bezug-@@@ Meß@@@ @@@ @@@, @@@ der Flüssigkeitsspiegel im bezugnehmenden Meßrohr auf die Bezugshöhe abgeglichen wird, Oft entstehen auch Fehler und Irrtümer beim Ablesen des Flüssigkeitsstandes iiber die Skala. am Meßrohr, sowie beim Umrechnen der angezeigten Werte, insbesondere beim Festlegen bestimmter Höhendifferenzen.The hose level levels of the usual design essentially exist consisting of two transparent measuring tubes connected by means of a hose to communicate with each other from Gl; s or Plexiglas, in which the level of the liquid level is opposite a mark or scale can be observed measuring with the dicSFjr execution a hose level is relatively cumbersome, because @@@ equalizes the liquid level in the two measurement notices, the mirror of misery in the reference - @@@ Meß @@@ @@@ @@@, @@@ the liquid level in the referring measuring tube to the reference height is adjusted, errors and mistakes often arise when reading the fluid level over the scale. on the measuring tube, as well as when converting the displayed values, in particular when defining certain height differences.

Weiters hat man Schlauchwasserwaagen entwickelt, welche in den Meßrohren meßbar verstellbare, mit dem Flüssigkeitsspiegel in Bc-rührung zu bringende Snitzen aufweisen, welche beim Berühren des Flüssigkeitsspiegels über die in den kommunizierenden Gefäßen befindliche, elektrisch leitfähige Flüssigkeit einen Strom-Kreis schließen, welcher ein optisches oder akustisches Signal auslöst. Diese Art von Schlauchwasserwaage ergibt eine hohe Meßgenauigkeit, ist aber durch die Einstellarbeiten sehr umtändlich in der Anwendung Außerdem sind Meßeinrichtungen zur Neigungsmessung bekannt, bei denen ein Paar gleich langer Pendeln an dem in seiner Neigung zu bestimmenden Bauelement angebracht sind, welche durch einen gelenkig aufgehängten Quersteg verbunden sind, wobei an dem Quersteg zwei, ein primäres Kapazitätselement bildende Kondensatorplatten angebracht sind und entlang der vorgegebenen Richtung dagegen meßbar verstellbare, ein sekundäres Kapazitätsglied bildende weitere zwei Kondensatorplatten vorhanden sind, wobei bei einem Nullabgleich der Kapazitäten der Verstellwert den betrag der Neigung ergibt.Furthermore, hose levels have been developed which are located in the measuring tubes measurably adjustable slots to be brought into contact with the liquid level have, which when touching the liquid level on the communicating in the Electrically conductive liquid in vessels close an electrical circuit, which triggers an optical or acoustic signal. This type of hose level results in a high measurement accuracy, but is very cumbersome due to the adjustment work In addition, measuring devices for inclination measurement are known in the application a pair of pendulums of equal length on the component whose inclination is to be determined are attached, which are connected by an articulated crossbar, two capacitor plates forming a primary capacitance element on the transverse web are attached and along the specified direction, however, measurably adjustable, A further two capacitor plates forming a secondary capacitance element are present are, with a zero adjustment of the capacities the adjustment value the amount of Inclination results.

Eine weitere bekannte Ausführungsform besteht aus einem Gehäuse, das auf der zu messenden Ebene steht, und eine elektrizitätsleitende Flüssigkeit enthält, deren freie Fläche die Bezugsebene für die Horizontallage darstellt, und über der mindestens zwei flache Elektroden angeordnet sind, welche mit der erwähnten freien Fläche der Flüssigkeit einen Kondensator bilden, dessen Kapazität durch den unterschiedlichen Stand der Flüssigkeit veränderbar ist, wobei eine Differenzialmessung der Kapazitätsveränderungen den Wert der Abweichung der zu messenden Ebene gegenüber der Bezugsebene anzeigt Aufgabe dieser Erfindung ist es, die vorstehend geschilderten Nachteile bekannter Bauarten zu vermeiden, insbesondere was die Bedienung betrifft, d .h eine Schlauchwasserwaage zu schaffen, bei der die Höhe des Flüssigkeitsspiegels in den Meßrohren ständig, selbständig und automatisch gemessen und verglichen wird, um den absoluten Betrag der Niveauunterschiede zu erhalten, welcher an einem eigenen Anzeigegerät zur Anzeige gebracht wird0 Erfindungsgemäß wird dies dadurch erreicht, daß in den beiden Meßrohren je zwei isolierte Meßsonden, deren Länge dem Meßweg der Meßrohre entspricht, und die jeweils miteinander einen Kondensator bilden, dessen Kapazität in an sich bekannter Weise durch den Stand der Flüssigkeit in den Meßrohren, d.h. der unterschiedlichen Dielektri zitätskonstanten von Flüssigkeit und Luft bestimmt wird, vorgesehen sind, daß die den unterschiedlichen bzw0 gleichen Kapazitäten der beiden Meßsondenkondensatoren in den beiden Menrohren entsprechenden Meßwerte einem gemeinsamen Meß- und Verstärkerelektronikgerät zum Vergleichen und Auswerten zugeführt sind, und daß das Gerät an ein elektrisches Anzeigegerät zur Anzeige angeschlossen ist.Another known embodiment consists of a housing that stands on the plane to be measured and contains a liquid that conducts electricity, whose free area represents the reference plane for the horizontal position, and above the at least two flat electrodes are arranged, which with the mentioned free Surface of the liquid form a capacitor, the capacity of which is due to the different The level of the liquid can be changed, with a differential measurement of the changes in capacitance shows the value of the deviation between the plane to be measured and the reference plane The object of this invention is to make the disadvantages described above better known Avoid types of construction, especially with regard to operation, i.e. a hose level to create at which the height of the liquid level in the measuring tubes is constantly, independently and automatically measured and compared to the absolute amount to obtain the level differences, which on a separate display device for display According to the invention, this is achieved in that in the two measuring tubes two insulated measuring probes, the length of which corresponds to the measuring path of the measuring tubes, and each of which forms a capacitor with one another, the capacitance of which is known per se Way by the level of the liquid in the measuring tubes, i.e. the different Dielectric constants of liquid and air are determined, are provided, that the different or equal capacities of the two measuring probe capacitors in the two menubes corresponding measured values to a common measuring and amplifier electronics device for comparison and evaluation are supplied, and that the device is connected to an electrical Display device is connected for display.

Merkmale und Einzelheiten dieser Schlauchwasserwaage werden an Hand der Zeichnung, welche ein Ausführungsbeispiel der Erfindung in schematischer Darstellung zeigt, ausgeführt.Features and details of this hose level are on hand the drawing, which shows an embodiment of the invention in a schematic representation shows executed.

Mit 1 sind die beiden Meßrohre bezeichnet, welche jeweils in einem Fußstück 4 befestigt sind, über dessen Anschlüsse sie mit einem Schlauch 5 kommunizierend verbunden sind0 Am Boden der Fußstücke 4 sind jeweils zwei isolierte Meßsonden 6 in einem bestimmten Abstand zueinander befestigt, welche senkrecht nach oben, dem Meßweg der Meßrohre entsprechend, aufragen, und die über elektrische Anschlußleitungen 7 an die in einem Gerät 8 integrierte gemeinsame Meß-, Steuer- und Verstärkerelektronik angeschlossen sind, Der Meßvorgang mit dem erfindungsgemäßen Gerät erfolgt in der Weise, daß die beiden Meßrohre mittels der an ihnen angebrachten Markierungen 2 auf gleiches Niveau 3 eingestellt werden, wobei durch dus Anzeigegerät 9, welches von den Meß- und Verstärkerelektronikgerät 8 angesteuert wird, eine O- bzw. Mitten erfolgt, bzw. darauf abgeglichen wird. Werden nun die beiden Meßrohre 1 an die beiden Stellen des Prüfobjektes, dessen Höhendifferenz festgestellt und ausgeglichen werden soll, gebracht, so wird vorerst das eine Meßrohr 1 mittels seiner Markierung 2 auf die Bezugshöhe eingestellt und das andere Meßrohr unter Beobachtung des Anzeigegerätes 9, welches nun die Niveauunterschiede der beiden Meßrohre anzeigt, soweit vertikal verschoben, bis durch das Anzeigegerät 9 eine 0- bzw. eine Mittenanzeige erfolgt, was bedeutet, daß die beiden Meßrohre 1 bzw.With 1, the two measuring tubes are designated, each in one Base 4 are attached, via the connections of which they communicate with a hose 5 are connected0 At the bottom of the foot pieces 4 are two insulated measuring probes 6 fixed at a certain distance from each other, which vertically upwards, the Measurement path of the measuring tubes rise accordingly, and the electrical connection lines 7 to the common measurement, control and amplifier electronics integrated in a device 8 are connected, The measuring process with the device according to the invention takes place in the Way that the two measuring tubes by means of the markings attached to them 2 be set to the same level 3, whereby by dus display device 9, which is controlled by the measuring and amplifier electronic device 8, an O or middle he follows, or is matched to it. Now the two measuring tubes 1 at the two points of the test object whose height difference is to be determined and compensated, brought, so is first of all a measuring tube 1 by means of its marker 2 on the Reference height set and the other measuring tube under observation of the display device 9, which now shows the differences in level between the two measuring tubes, as far as vertical shifted until the display device 9 shows a 0 or a center display, which means that the two measuring tubes 1 and

die Markierungen 2 gleiches Niveau haben. Es genügt somit, beim Meßvorgang nur auf das Anzeigegerät 9 zu achten, und die beiden Flüssigkeitsspiegel in den Meßrohren 1 außer Betracht zu lassen, da sie ja selbsttätig gemessen werden. Dabei ist naturgemäß auf vertikale Stellung beider Meßrohre 1 zu achten.the marks 2 have the same level. It is therefore sufficient during the measuring process just pay attention to the display device 9, and the two liquid levels in the To leave measuring tubes 1 out of consideration, since they are measured automatically. Included Of course, care must be taken that both measuring tubes 1 are positioned vertically.

- Patentanspruch -- claim -

Claims (1)

P a t e n t a n 5 n r u c h Schlauchwasserwaage mit elektrischer Niveauanzeige der Flüssigkeitsspiegel in zwei Fliissigkeitsgef äßen in Form von Meßrohren, welche in Füßen bzw. Halterungen befestigt und über diese mit einem Schlauch kommunizierend verbunden Sind, dadurch gekennzeichnet, daß in den beiden Meßrohren (1) je zwei isolierte Meßsonden (6)S deren Länge dem Meßweg der Meßrohre (1) entspricht, und die jeweils miteinander einen Kondensator bilden, dessen Kapazität in an sich bekannter Weise durch den Stand der Flüssigkeit in den Meßrohren (1), d.h. der unterschiedlichen Dielektrizitätskonstanten von FlUssigkeit und Luft bestimmt wird, vorgesehen sind, daß die den unterschiedlichen bzw. gleichen Kapazitäten der beiden Meßsondenkondensatoren in den beiden Meßrohren (1) entsprechenden Meßwerte einem gemeinsamen Meß- und Verstärkerelektronikgerät (8) zum Vergleichen und Auswerten zugeführt sind, und daß das Gerät an ein elektrisches Anzeigegerät (9) zur Anzeige angeschlossen ist P a t e n t a n 5 n r u c h Hose spirit level with electrical Level display of the liquid level in two liquid vessels in the form of Measuring tubes, which are fastened in feet or brackets and over these with a hose Are communicatingly connected, characterized in that in the two measuring tubes (1) two insulated measuring probes (6) S whose length corresponds to the measuring path of the measuring tubes (1), and each of which forms a capacitor with one another, the capacitance of which in itself known way by the level of the liquid in the measuring tubes (1), i.e. the different Dielectric constants of liquid and air are determined, are provided, that the different or the same capacities of the two measuring probe capacitors in the two measuring tubes (1) corresponding measured values from a common electronic measuring and amplifier device (8) are supplied for comparison and evaluation, and that the device is connected to an electrical Display device (9) is connected for display
DE19772711620 1976-03-23 1977-03-17 Hose water level with electric level display - has measuring tubes, each with two electrodes forming capacitor with capacitance dependent on level of liq. (OE 16.4.77) Pending DE2711620A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT211176A AT340695B (en) 1976-03-23 1976-03-23 HOSE LEVEL WITH ELECTRIC LEVEL INDICATOR

Publications (1)

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DE2711620A1 true DE2711620A1 (en) 1977-09-29

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DE19772711620 Pending DE2711620A1 (en) 1976-03-23 1977-03-17 Hose water level with electric level display - has measuring tubes, each with two electrodes forming capacitor with capacitance dependent on level of liq. (OE 16.4.77)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026723A1 (en) * 1979-09-14 1981-04-08 Marcel Legris Electric indicating level
FR2621115A1 (en) * 1987-09-30 1989-03-31 Pieddeloup Daniel Electronic level/inclinometer/accelerometer using variation in capacitance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026723A1 (en) * 1979-09-14 1981-04-08 Marcel Legris Electric indicating level
FR2621115A1 (en) * 1987-09-30 1989-03-31 Pieddeloup Daniel Electronic level/inclinometer/accelerometer using variation in capacitance

Also Published As

Publication number Publication date
ATA211176A (en) 1977-04-15
AT340695B (en) 1977-12-27

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