[go: up one dir, main page]

WO2006063933A2 - Limnimetre fonctionnant selon le principe du temps de propagation et procede pour sa mise en service - Google Patents

Limnimetre fonctionnant selon le principe du temps de propagation et procede pour sa mise en service Download PDF

Info

Publication number
WO2006063933A2
WO2006063933A2 PCT/EP2005/056329 EP2005056329W WO2006063933A2 WO 2006063933 A2 WO2006063933 A2 WO 2006063933A2 EP 2005056329 W EP2005056329 W EP 2005056329W WO 2006063933 A2 WO2006063933 A2 WO 2006063933A2
Authority
WO
WIPO (PCT)
Prior art keywords
level
level gauge
echo
distance
amplitude
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.)
Ceased
Application number
PCT/EP2005/056329
Other languages
German (de)
English (en)
Other versions
WO2006063933A3 (fr
Inventor
Manfred Eckert
Dietmar Spanke
Manfred Hammer
Reinhard Schaefer
Klaus Pankratz
Marc Felden
Christian Reinau
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of WO2006063933A2 publication Critical patent/WO2006063933A2/fr
Publication of WO2006063933A3 publication Critical patent/WO2006063933A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating 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
    • G01F23/28—Indicating 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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level

Definitions

  • the invention relates to a running on the transit time principle level gauge and a method for its commissioning.
  • Level gauges are used in a variety of industries, e.g. in the processing industry, in chemistry or in the food industry.
  • a commonly used type of level measurement is based on the transit time principle.
  • transmission signals e.g. Microwaves, ultrasound waves sent by an antenna or short electromagnetic pulses along a waveguide to the surface of a medium and re-received at the surface of the product reflected echo signals after a distance-dependent duration.
  • a echo function representing the echo amplitudes as a function of the transit time is formed. Each value of this echo function corresponds to the amplitude of an echo reflected at a certain distance from the level gauge.
  • Reflection of a transmission signal on the product surface corresponds.
  • the useful echo has a greater amplitude than the other echoes. From the duration of the useful echo results in a fixed propagation speed of the transmission signals directly the distance between the Gregutober Structure and the level gauge.
  • the level gauge requires some information. In determining the level, e.g. to consider an installation height of the level gauge in the tank.
  • such a material property is e.g. a dielectric constant of the medium. How well the product reflects microwaves or how large a proportion of the reflected signals depends on the dielectric constant of the medium. Accordingly, an estimate of an expected amplitude of the useful echo can be made on the basis of the dielectric constant, which facilitates finding the correct useful echo.
  • the level gauge After commissioning, the level gauge then works independently with the help of the parameter set.
  • the parameters also include information on the geometry of the container used, an empty distance at which the level gauge is to detect that a container filled with the product is empty, and a
  • Container is full.
  • a generally application-dependent measuring device-specific blocking distance within which no level measurement is possible, a background signal which is to be blanked out during the measurement, as well as material properties of the filling material, such as e.g. its dielectric constant.
  • selection rules for determining the useful echo play an important role. These selection rules are often referred to in industry as the first echo factor. Depending on the application, such selection rules may specify that the echo with the shortest transit time is to be selected as the wanted echo, that the echo with the greatest amplitude is to be selected as the wanted echo, or that the wanted echo is selected on the basis of a weighting function which determines the transit times and the amplitudes of the echoes considered.
  • the minimum set of parameters comprises a current fill level.
  • a background signal is derived based on an amplitude of the reference echo signal in a range between the level gauge and the current level.
  • the derivative of the background signal is performed or repeated at a time at which the level falls below a predetermined minimum value.
  • a block distance is determined based on an amplitude of the reference echo signal in a near range of the level measuring device, within which the amplitude exceeds a predetermined threshold. The range of the block distance is excluded for subsequent level measurements.
  • the filling level measuring device derives selection instructions for determining a useful echo during startup.
  • a transmission signal is sent in the direction of a filling material and recorded its reference echo signal in the reference measurement. Based on the reference echo signal, an echo originating from a reflection at the product surface is determined and an dielectric constant of the product is estimated on the basis of an amplitude of this echo and its transit time or its distance from the fill level measuring device.
  • a void echo originating from a reflector corresponding to an empty distance from the fill level measuring device is determined, and an empty distance is derived on the basis of the void echo, the current fill level and the dielectric constant of the medium.
  • the level gauge is a working with microwaves level gauge, which is equipped with an antenna from a given selection of different types of antennas.
  • a transmission signal is sent in the direction of a filling material, its reference echo signal recorded, and derived from the reference echo signal, a measure of a received microwave power. Based on the measure of the received microwave power, the antenna type is derived.
  • the level gauge indicates to the user at least one of the additional parameters.
  • the user confirms the displayed additional parameters or replaces them with his own information.
  • the invention consists in a level measuring device for carrying out the method according to the invention, which has a parameterization unit, via which the minimum rate of the parameters can be specified.
  • the parameterization unit is integrated in the level gauge.
  • the parameterization unit comprises a software module installed on an external computer and the external computer is connected via a communication interface with the level gauge.
  • the parameterization unit has an input device and a display.
  • Fig. 1 shows an arrangement for level measurement with a microwave
  • Fig. 2 shows an arrangement for level measurement with a with
  • Fig. 3 shows an arrangement for level measurement with a with
  • FIG. 4 shows an amplitude profile of a reference echo signal having a
  • Microwave working level gauge as a function
  • FIG. 5 shows an amplitude profile of a reference echo signal with a
  • Microwave working level gauge as a function
  • FIG. 6 shows an amplitude characteristic of a reference echo signal having a
  • Microwave working level gauge as a function
  • Fig. 7 shows an amplitude characteristic of a reference echo signal having a
  • FIG. 8 shows an amplitude characteristic of a reference echo signal having a
  • Fig. 9 shows a level gauge with an integrated Parameterization unit
  • Fig. 10 shows a level gauge with an external one
  • Fig. 1 shows an arrangement for level measurement with a container 1 filled with a container 3 on which a running on the transit time principle level gauge 5 is arranged.
  • the fill level measuring device 5 in the exemplary embodiment illustrated in FIG. 1 is a fill level measuring device operating with microwaves, which has an antenna 7 for transmitting and / or receiving microwaves.
  • FIG. 2 shows, as an example, an arrangement with a fill level measuring device operating with ultrasound
  • FIG. 3 shows a level measuring device 11 operating with short electromagnetic pulses.
  • the level gauge 5 To determine the level 13, the level gauge 5 requires some parameters. These parameters must be present for the measurement in the level gauge 5, 9, 11. For this purpose, a commissioning is made. Commissioning of conventional level gauges are usually very expensive, time-consuming and can only be performed by trained personnel, as a variety of different parameters transmitted and sometimes very complicated issues, such as. Underground signals or disturbances must be recorded and taken into account.
  • Minimum set of parameters are preferably queried by the level gauge 5 and entered by the user.
  • Standard parameters are stored in a memory 14 in the level measuring device 5.
  • Standard parameters are universally valid parameters that are independent of the particular application in which the level gauge 5 is to be used.
  • One of these standard parameters is, in particular, a propagation velocity of the Transmission signals S in free space.
  • the level gauge 5 automatically performs a reference measurement.
  • a transmission signal S is sent in the direction of the contents 1 and its reference echo signal R recorded.
  • the level gauge 5 derives additional parameters based on the predetermined parameters, the standard parameters and the reference measurement.
  • the minimum set of parameters preferably comprises the current fill level L.
  • Based on the reference measurement can be, as in conventional level measurements also, determine a distance D between the level gauge 5 and the product surface. For this purpose, e.g. an echo function of the reference echo signal R derived representing an amplitude of the reference echo signal R as a function of its transit time t.
  • each transit time t can be converted by a corresponding distance d (t) from the level gauge 5.
  • the amplitude A has in a near-field I, i. in a range of short maturities t, a steeply sloping course.
  • components of the reference echo signal R which are e.g. to reflections in the range of a microwave generating unit, in the region of a coupling of the transmission signals in the antenna 7 and reflections within the antenna 7 itself are due.
  • a region II in which the amplitude has a nearly constant low value which is related to a background signal, e.g. a noise or scattering lessons, is due.
  • This area is followed by a region III, in which a pronounced echo E attributable to a reflection at the product surface 13 lies. From the transit time t E of a maximum of the echo E, a distance D between the level measuring device 5 and the product surface 13 is calculated on the basis of the propagation velocity of the microwaves in free space.
  • This distance D corresponds to the current level L, which is present during commissioning. From this distance D and the current level L immediately results in an installation height H of the level gauge 5 on the container 3. It is equal to the sum of the current level L and the distance D.
  • the installation height H represents an important additional parameter, which the level measuring device 5, as described, independently derives.
  • the installation height H does not have to be determined or entered by the user.
  • error sources eg measurement errors in the determination of the installation height H, input errors or errors that are due to the fact that the level gauge 5 and the user different starting and end points in the determination of the installation height H basis are excluded.
  • the level gauge 5 is already able to determine the fill level L based on the installation height H from the transit time t of an echo E reflected on the product surface 13.
  • the distance d of the product surface 13 from the level measuring device 5 is determined on the basis of the transit time t of the echo E and the propagation speed.
  • the level L is then equal to a difference of installation height H and distance d:
  • H is the previously derived installation height
  • D is the distance derived from the transit time t of the useful echo
  • measures are preferably automatically taken during commissioning to improve the measurement accuracy and the measurement reliability.
  • a background is preferably derived on the basis of an amplitude of the reference echo signal R in a region between the fill level measuring device 5 and the current fill level L. This is preferably done by recording and storing the amplitude A of the echo function of the reference echo signal R in the regions I and II. In the case of subsequent fill level measurements, this background is taken into account by recognizing only such echoes as echoes and using them for fill level measurements whose amplitude is greater than the corresponding amplitude of the subsurface in these areas I, II.
  • the range in which the background is derived is therefore preferably carried out at a time at which the level falls below a predetermined minimum value. If the current fill level L during commissioning is above the predetermined minimum value, then the derivative can be shifted to a later point in time at which the fill level L falls below the minimum value. Alternatively, the derivative can also be repeated at this later time.
  • the fill level measuring device 5 automatically determines a blocking distance B during startup.
  • the blocking distance B is a distance in the vicinity of the level measuring device 5 within which a fill level measurement is not possible.
  • the blocking distance B is a consequence of interference signals, for example reflections in the region of the coupling of the transmission signals into the antenna 7, within the antenna 7 and during the transition into the container 3 in the area of the antenna 7.
  • the blocking distance B can also be determined by the installation situation of the antenna Level gauge 5 and therefore can not be determined in advance.
  • the blocking distance B is preferably determined on the basis of an amplitude of the reference echo signal R, or its echo function, in a near range of the fill level measuring device 5. For this purpose, a region is determined in which the amplitude exceeds a predetermined threshold value S. This area corresponds to the area I in FIG. 4.
  • the level gauge 5 independently determines the blocking distance B and stores it in the memory 14. The area of the block distance B is excluded for subsequent level measurements.
  • a threshold amplitude can be derived as a function of the transit time. Echoes in the area of the block distance B are correspondingly detected in subsequent level measurements only if their amplitude exceeds the threshold amplitude.
  • the threshold amplitude can be set, for example, equal to the amplitude of the background signal in the area of the block distance B.
  • a function can be derived which reproduces the basic profile of the amplitude in this area. This is z. B. a straight line G shown in Fig. 4, which is adapted to a slope of the background signal, and whose amplitude at the end of the blocking distance B is equal to the threshold value S.
  • Selection rules for determining a useful echo designates that echo which is due to a reflection at the product surface 13.
  • selection rules may specify that the echo with the shortest transit time is to be selected as the wanted echo, that the echo having the largest amplitude is to be selected as the wanted echo, or that the wanted echo is selected on the basis of a weighting function which determines the transit times and the amplitudes of the echoes considered.
  • the derivation of the selection rules is preferably based on the amplitude curve of the reference echo signal R. It can be distinguished from the reference measurement striking cases. The simplest case is shown in FIG. 4. There is an application in which no special features, such as striking false echoes occur.
  • the selection rule is derived from this as the useful echo to select the first echo and / or the echo having the largest amplitude. If a product 1 with low reflectivity is located in the container 3, an echo originating from a reflector with a higher reflectivity can have an amplitude that is greater than that of the useful echo. Accordingly, in this case, the selection rule would be derived as the useful echo to select the first echo.
  • the selection rule can be derived in this case as the useful echo to select the echo with the largest amplitude.
  • the amplitude of the false echo ST can be determined and specified as a further selection rule, that only echoes come into question as useful echo whose amplitude exceeds the amplitude of the interferer by a predetermined amount. As a measure here either a constant size or a term-dependent weighting function can be specified.
  • the selection rule can be derived as useful echo not to select the echo with the largest amplitude.
  • it can be specified here that only those echoes are considered as useful echo whose amplitude falls below the amplitude of the interferer by a predetermined amount.
  • a constant size or a term-dependent weighting function can be specified.
  • the level measuring device 5 automatically determine material properties of the filling material 1 during commissioning. This is preferably also done on the basis of the reference measurement, in which a transmission signal S is sent in the direction of a filling material 1 and its reference echo signal R is recorded. On the basis of the reference echo signal R, as already explained above, the echo E originating from a reflection at the product surface 13 is determined.
  • the amplitude A (t) of the maximum of the echo E is, inter alia, a function of the transmission power, the distance D of the product surface 13 from the level measuring device 5 and the dielectric constant ⁇ of the medium 1. Instead of the distance D, of course, the duration t of the maximum can be used , Both quantities can be converted by means of the propagation velocity v into each other.
  • the microwaves experience a distance dependent damping.
  • the proportion of the transmission signals S which is reflected at the Medgutober Assembly 13, is dependent on a reflectivity of the medium 1.
  • the reflectivity is dependent on the dielectric constant ⁇ . Since these dependencies apply universally, this information can be stored in the level gauge 5 in the form of standard parameters. For this purpose, for example, a table or a conversion rule can be provided, by means of which the amplitude A (t) of the echo E and its transit time t E or its distance D from the level measuring device 5 is assigned a dielectric constant ⁇ of the filling material 1. By means of these standard parameters, the filling level measuring device 5 estimates the dielectric constant ⁇ of the filling material 1 based on the reference measurement.
  • empty distance LD is a distance from the level gauge 5 is designated, in which the level gauge 5 is to recognize in operation that the container 3 is empty.
  • a void echo E L originating from a reflector 15 is determined.
  • the reflector 15 is located at a distance corresponding to a vertical distance LD from the level gauge 5.
  • the reflector 15 is a bottom of the container 3.
  • the associated void echo E is the echo of the echo function of the reference echo signal R with the Runtime t.
  • the level gauge 5 Based on the empty echo E, the distance D between the level gauge 5 and the product surface 13 and the dielectric constant ⁇ of the medium 1, the level gauge 5 is automatically able to derive the empty distance LD.
  • D is the distance between the level gauge and the
  • LD is the empty distance
  • v ⁇ mean the speed of propagation in the product 1.
  • the level gauge 5 determines the propagation speed v in the product 1 automatically.
  • ⁇ are the induction constant.
  • the influential constant ⁇ and the induction constant ⁇ are standard parameters that are stored in the level measuring device 5.
  • the dummy distance LD and the installation height H coincide.
  • both methods can be used in parallel.
  • the filling level measuring device 5 automatically carries out a plausibility check by comparing the results using the two methods.
  • the installation height H and the empty distance LD differ from each other.
  • reflectors then come e.g. specially designed components or container installations, such as e.g. Agitators into consideration.
  • the level gauge 5 then reports empty when the level L falls to the empty distance LD.
  • a calculation of the amount of product actually contained in the container 3 is then determined based on the installation height H of the level gauge 5.
  • level gauges 5 When working with microwaves level gauges 5, it is often possible to equip a master unit with any antenna 7 from a given selection of different types of antennas. The individual antenna types differ in their size. If a predetermined transmission signal S is transmitted and its echo signal is received, then the received microwave power depends on the size of the antenna 7 and thus the choice of the antenna type. Based on this relationship, the level gauge 5 is automatically able to recognize the connected antenna type during commissioning based on the reference measurement.
  • a measure of a received microwave power is derived.
  • a measure of the received microwave power is, for example, an integral on the amplitude A (t) of the echo function of the reference echo signal R.
  • Based on the measure of the received microwave power can be assigned to the selected type of antenna. This is preferably done on the basis of a classification table stored as a standard parameter in the level gauge 5.
  • the ultrasonic level measuring device 9 shown in FIG. 2 the method according to the invention can be applied analogously.
  • an ultrasonic transmitter 17 such as an electromechanical transducer, esp. A piezoelectric element.
  • the level gauge 9 performs a reference measurement, in which a transmission signal S is sent in the direction of a filling material 1 and the reference echo signal R is recorded.
  • an echo function of the reference echo signal R is preferably formed, which reproduces the amplitude A (t) of the reference echo signal R as a function of its transit time t.
  • 5 shows an example of an amplitude characteristic A (t) of the reference echo signal R as a function of the transit time t.
  • the echo function has the characteristic regions I, II and HI whose principal course corresponds to that of the echo function shown in FIG.
  • the fill level measuring device 7 also independently derives additional parameters from the given parameters and the reference measurement.
  • the level gauge 9 automatically determines from the reference measurement the distance D to Gregutober Structure 13 from which it deduces in connection with the current level L, the installation height H of the level gauge 9.
  • background and blocking distance B can be derived analogously on the basis of the reference measurement.
  • ultrasound level gauges 9 When working with ultrasound level gauges 9, it is often possible to equip a master unit with ultrasound transmitters from a predetermined selection of different Ultraschalltransmittertypen.
  • the individual types of transmitters differ in their transmission power. If a predetermined transmission signal S is transmitted and its echo signal is received, the received ultrasonic power depends on the distance of the reflector and the transmission power and thus the choice of the transmitter type. Based on this relationship, the level measuring device 9 is automatically detected during commissioning based on the reference measurement in the position of the connected Ultraschalltransmittertyp.
  • a measure of a received ultrasound power is derived.
  • a measure of the received ultrasound power is, for example, an integral on the amplitude A (t) of the echo function of the reference echo signal R.
  • Based on the measure of the received ultrasound power can be assigned to the selected Ultraschalltransmittertyp. This is preferably done on the basis of one as standard parameters in the level gauge 9 stored assignment table.
  • inventive method can also be applied to a working with short electromagnetic pulses level gauge.
  • An example of such a level gauge 11 is shown in FIG. 6 shows an amplitude curve A (t) as a function of the transit time of an associated reference echo signal R.
  • the fill level measuring device 11 has a waveguide 19 instead of the antenna 7 or the ultrasonic transmitter 17.
  • a waveguide can both, as shown here, serve a single as well as two or more parallel to each other arranged conductors which extend into the container 3 into it.
  • Suitable waveguides are e.g. bare metal wires, also referred to as summer field conductors, or metal wires provided with insulation. The latter are also known as the Goubau probe.
  • An electronic circuit for generating electromagnetic signals as well as a receiving and evaluating circuit for determining a filling level is known e.g. described in EP-A 780 665.
  • the level gauge 11 is analogous to those previously described
  • Level measuring devices 5, 9 are automatically able to use the reference measurement to determine additional parameters such as installation height H, block distance B, dielectric constant ⁇ and a subsurface.
  • level gauges 11 it is today in some of these level gauges 11 for a user the ability to shorten a length of the waveguide 19 to a desired length.
  • the level gauge 11 can detect only those levels that are above a located in the container 3 end 21 of the waveguide 17. At the end 21 of the waveguide 19 occurs an impedance jump, which leads to a reflection of the short electromagnetic pulses.
  • the end 21 is thus a reflector that allows the level gauge 11 to automatically determine the position of the end 21 to. In this case, the same procedure as in the previously described determination of the empty distance LD.
  • the position of the end 21 corresponds to the empty distance LD.
  • the dielectric constant ⁇ of the filling material 1 is derived in an analogous manner on the basis of the amplitude of the echo E reflected at the product surface 13 and the empty distance LD is determined on the basis of fill level L, dielectric constant ⁇ and the transit time t L of the echo E L reflected at the end 21.
  • the propagation speed of the transmission signals S along the waveguide 19 in free space and as a function of the dielectric constant ⁇ of a filling material 1 surrounding the waveguide 19 are required as stored standard parameters.
  • the level gauges 5, 9, 11 preferably have a parameterization unit, via which the minimum set of parameters can be predetermined.
  • Fig. 9 is a level measuring device 5, 9, 11 with an integrated into the level measuring device 5, 9, 11 parameterization unit 23 shown.
  • the parameterization unit 23 comprises a display 25, here a suburb display, and an input device 27, eg a keyboard.
  • the parameterization unit 23 enables a guided operation. During commissioning, the parameterization unit 23 queries successively all the parameters of the minimum set. In doing so, both graphic and alphanumeric representations, as shown e.g. in connection with the user interface described in the German patent application DE-A 10213746.
  • a parameterization unit 29, as shown in FIG. 10, can also be provided. It includes a software module installed on an external computer 31.
  • the external computer 31 is connected via a communication interface 33 with the level gauge 5, 9, 11.
  • a keyboard of the computer 31 serves as an input device 35 and its screen as a display 37th
  • the level gauge 5, 9, 11 automatically carries out at least one reference measurement and derives the additional parameters.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

L'invention concerne un limnimètre (5, 9, 11) fonctionnant selon le principe du temps de propagation, ainsi qu'un procédé pour la mise en service d'un tel limnimètre, la mise en service devant être effectuée de manière simple. A cet effet, un utilisateur spécifie un jeu minimum de paramètres ; le limnimètre (5, 9, 11) exécute une mesure de référence pour laquelle un signal d'émission (S) est émis en direction d'un produit de remplissage (1) et son signal d'écho de référence (R) est enregistré ; et le limnimètre (5, 9, 11) déduit des paramètres supplémentaires à partir des paramètres spécifiés et de la mesure de référence.
PCT/EP2005/056329 2004-12-17 2005-11-29 Limnimetre fonctionnant selon le principe du temps de propagation et procede pour sa mise en service Ceased WO2006063933A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004061449.0 2004-12-17
DE102004061449A DE102004061449A1 (de) 2004-12-17 2004-12-17 Nach dem Laufzeitprinzip arbeitendes Füllstandsmessgerät und Verfahren zu dessen Inbetriebnahme

Publications (2)

Publication Number Publication Date
WO2006063933A2 true WO2006063933A2 (fr) 2006-06-22
WO2006063933A3 WO2006063933A3 (fr) 2006-11-30

Family

ID=36123206

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/056329 Ceased WO2006063933A2 (fr) 2004-12-17 2005-11-29 Limnimetre fonctionnant selon le principe du temps de propagation et procede pour sa mise en service

Country Status (2)

Country Link
DE (1) DE102004061449A1 (fr)
WO (1) WO2006063933A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1906158A1 (fr) * 2006-09-07 2008-04-02 Rosemount Tank Radar AB Mesure de niveau par de radar
US9068876B2 (en) 2011-05-27 2015-06-30 Vega Grieshaber Kg Device and method for determining media and container properties
US9163971B2 (en) 2011-05-27 2015-10-20 Vega Grieshaber Kg Evaluation device and method for determining a characteristic variable for the location of a boundary surface in a container
US9354100B2 (en) 2011-05-27 2016-05-31 Vega Grieshaber Kg Device and method for determining media characteristics and container characteristics
WO2025120971A1 (fr) * 2023-12-06 2025-06-12 ホシデン株式会社 Système d'estimation de quantité restante
US12442830B2 (en) 2020-04-24 2025-10-14 Gen-Probe Incorporated Systems for differential measurement of a fluid level in a sample receptacle

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355548B2 (en) 2005-09-01 2008-04-08 Rosemount Tank Radar Ab Processing of tank signal in radar level gauge system
NL1031209C2 (nl) 2006-02-22 2007-08-24 Enraf Bv Werkwijze en inrichting voor het nauwkeurig vaststellen van het niveau L van een vloeistof met behulp van naar het vloeistofniveau uitgestraalde radarsignalen en door het vloeistofniveau gereflecteerde radarsignalen.
NL1034327C2 (nl) 2007-09-04 2009-03-05 Enraf Bv Werkwijze en inrichting voor het binnen een bepaald meetbereik vaststellen van het niveau L van een vloeistof met behulp van naar het vloeistofniveau uitgestraalde radarsignalen en door het vloeistofniveau gereflecteerde radarsignalen.
US8271212B2 (en) 2008-09-18 2012-09-18 Enraf B.V. Method for robust gauging accuracy for level gauges under mismatch and large opening effects in stillpipes and related apparatus
US8659472B2 (en) 2008-09-18 2014-02-25 Enraf B.V. Method and apparatus for highly accurate higher frequency signal generation and related level gauge
US8224594B2 (en) 2008-09-18 2012-07-17 Enraf B.V. Apparatus and method for dynamic peak detection, identification, and tracking in level gauging applications
US9046406B2 (en) 2012-04-11 2015-06-02 Honeywell International Inc. Advanced antenna protection for radars in level gauging and other applications
DE202019001575U1 (de) 2019-04-07 2019-05-03 Cemo Gmbh Eigenständiges Füllstandsmesssystem
DE102023103244A1 (de) * 2023-02-10 2024-08-14 Endress+Hauser SE+Co. KG Verfahren zur Festlegung eines Füllstands-Messbereichs

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4218303C1 (de) * 1992-06-03 1994-03-03 Endress Hauser Gmbh Co Verfahren und Anordnung zur Abstandsmessung nach dem Impulslaufzeitprinzip
DE4223346C2 (de) * 1992-07-16 1996-05-02 Grieshaber Vega Kg Anordnung und Verfahren zur berührungslosen Füllstandmessung
DE4332071C2 (de) * 1993-09-21 1995-09-07 Endress Hauser Gmbh Co Verfahren zur Füllstandsmessung nach dem Radarprinzip
US5898308A (en) * 1997-09-26 1999-04-27 Teleflex Incorporated Time-based method and device for determining the dielectric constant of a fluid
CA2286439A1 (fr) * 1999-10-15 2001-04-15 Walter Sacuta Ameliorations pour la reflectometrie dans le domaine du temps
AU2002211244A1 (en) * 2000-09-22 2002-04-02 Rosemount, Inc. Improved threshold setting for a radar level transmitter
US6684919B2 (en) * 2001-02-08 2004-02-03 Vega Grieshaber Kg Filling level measuring device and method for the non-contact determination of the filling level of a filling product in a receptacle
DE10260962A1 (de) * 2002-12-20 2004-07-01 Endress + Hauser Gmbh + Co. Kg Füllstandsmeßgerät und Verfahren zur Füllstandsmessung nach dem Laufzeitprinzip
DE10260959A1 (de) * 2002-12-20 2004-07-15 Endress + Hauser Gmbh + Co. Kg Füllstandsmeßgerät und Verfahren zur Füllstandsmessung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1906158A1 (fr) * 2006-09-07 2008-04-02 Rosemount Tank Radar AB Mesure de niveau par de radar
US9068876B2 (en) 2011-05-27 2015-06-30 Vega Grieshaber Kg Device and method for determining media and container properties
US9163971B2 (en) 2011-05-27 2015-10-20 Vega Grieshaber Kg Evaluation device and method for determining a characteristic variable for the location of a boundary surface in a container
US9354100B2 (en) 2011-05-27 2016-05-31 Vega Grieshaber Kg Device and method for determining media characteristics and container characteristics
US12442830B2 (en) 2020-04-24 2025-10-14 Gen-Probe Incorporated Systems for differential measurement of a fluid level in a sample receptacle
WO2025120971A1 (fr) * 2023-12-06 2025-06-12 ホシデン株式会社 Système d'estimation de quantité restante

Also Published As

Publication number Publication date
DE102004061449A1 (de) 2006-06-22
WO2006063933A3 (fr) 2006-11-30

Similar Documents

Publication Publication Date Title
EP2856086B1 (fr) Procédé de mesure de niveau de remplissage d'après le principe du temps de vol
DE102007042042B4 (de) Verfahren zur Ermittlung und Überwachung des Füllstands eines Mediums in einem Behälter nach einem Laufzeitmessverfahren
DE102009001010B4 (de) Verfahren zur Ermittlung und Überwachung des Füllstands eines Mediums in einem Behälter nach einem Laufzeitmessverfahren
EP2104839A1 (fr) Procédé pour déterminer et surveiller le niveau d'un fluide dans un récipient selon un procédé de mesure du temps de propagation
EP0668488B1 (fr) Dispositif de mesure du niveau de remplissage d'un réservoir
DE102007060579B4 (de) Verfahren zur Ermittlung und/oder zur Beurteilung des Befüllzustands eines mit zumindest einem Medium gefüllten Behälters
WO2012048938A1 (fr) Procédé pour la détermination et la surveillance du niveau de remplissage d'un fluide dans un contenant au moyen d'un appareil de mesure du niveau de remplissage selon un procédé de mesure du temps de propagation
WO2006063933A2 (fr) Limnimetre fonctionnant selon le principe du temps de propagation et procede pour sa mise en service
EP3308110B1 (fr) Procédé et dispositif pour contrôler la fonctionnalité d'un appareil de mesure du niveau de remplissage basé sur un radar
EP1695044A2 (fr) Appareil de mesure d'un niveau de remplissage et procede de mesure et de surveillance du niveau de remplissage
EP3025128B1 (fr) Procédé pour déterminer et surveiller le niveau d'un fluide dans un récipient selon un procédé de mesure du temps de propagation
DE10325267A1 (de) Anordnung und Verfahren zur Füllstandsmessung
DE102005003152A1 (de) Verfahren zur Überprüfung der ordnungsgemäßen Funktion eines Füllstandmessgeräts
DE102016105419B4 (de) Verfahren zur Bestimmung eines Rohr-Innendurchmessers eines Schwallrohres durch ein Füllstandsmessgerät
DE10260959A1 (de) Füllstandsmeßgerät und Verfahren zur Füllstandsmessung
DE102017100269A1 (de) Verfahren zur Detektion eines Fehlerzustandes an einem FMCW-basierten Füllstandsmessgerät
WO2020064216A1 (fr) Détection des états en fonction de l'événement lors de la mesure du niveau de remplissage
EP2739946B1 (fr) Relation lineaire entre pistes
DE10249544B4 (de) Verfahren zur Füllstandsmessung nach dem Laufzeitprinzip
WO2016202533A1 (fr) Procédé et dispositif de détermination du niveau de remplissage d'un produit de remplissage dans un récipient
DE10196640B4 (de) Verbesserte Schwellenwerteinstellung für einen Radar-Pegeltransmitter
DE102017126734A1 (de) Verfahren zur Erstellung einer Ausblendkurve für ein Füllstandsmessgerät
DE102011089427B4 (de) Verfahren zum Abgleich eines Füllstandsmessgeräts
EP4177578B1 (fr) Procédé de mise en service d'un appareil de mesure de niveau de remplissage

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase

Ref document number: 05815509

Country of ref document: EP

Kind code of ref document: A2