DE19533875A1 - Sewage effluent measurement in domestic and industrial premises - Google Patents
Sewage effluent measurement in domestic and industrial premisesInfo
- Publication number
- DE19533875A1 DE19533875A1 DE1995133875 DE19533875A DE19533875A1 DE 19533875 A1 DE19533875 A1 DE 19533875A1 DE 1995133875 DE1995133875 DE 1995133875 DE 19533875 A DE19533875 A DE 19533875A DE 19533875 A1 DE19533875 A1 DE 19533875A1
- Authority
- DE
- Germany
- Prior art keywords
- measurement
- waste water
- measuring
- domestic
- sewage effluent
- 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.)
- Withdrawn
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 20
- 239000010865 sewage Substances 0.000 title abstract 2
- 239000002351 wastewater Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims 1
- 230000002452 interceptive effect Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G01F23/296—Acoustic waves
- G01F23/2962—Measuring transit time of reflected waves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/002—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow wherein the flow is in an open channel
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Thermal Sciences (AREA)
- Measuring Volume Flow (AREA)
Abstract
Description
Die Erfindung betrifft eine Abwassermengenmessung, die über mindestens 5 Meßkanäle alle relevanten Meß- und Kompensationssignale erfaßt.The invention relates to a wastewater quantity measurement, which has at least 5 Measurement channels all relevant measurement and compensation signals recorded.
Derartige Meßeinrichtungen werden zur Erfassung des Abwasservolumens von Gebäuden eingesetzt. Dabei müssen alle Meßgrößen, die zur Berechnung der Abwassermenge benötigt werden, derart erfaßt werden, daß selbst kleinste Mengen von Abwässern sowie deren Zusammensetzung und Temperatur keinen verändernden Einfluß auf die Messung haben.Such measuring devices are used to record the waste water volume used by buildings. In doing so, all measurands used for the calculation the amount of wastewater required are recorded in such a way that even the smallest Quantities of waste water as well as their composition and temperature none have a changing influence on the measurement.
Die Verfahren zur Ermittlung von Strömungsgeschwindigkeit und Füllstandshöhe im Abwasserrohr sind bekannt und werden in diversen Offenlegungsschriften behandelt. Bei der Messung der Strömungsgeschwindigkeit werden zwei verschiedene Verfahren benutzt. Zum einen werden Ultraschallwellen diagonal in und gegen die Strömungsrichtung gesendet. Bei der Auswertung wird die Schallgeschwindigkeit als unbekannte Größe eliminiert. Die andere Möglichkeit liegt in der Bestimmung der Strömungsgeschwindigkeit durch Auswertung des Dopplereffektes. Die Messung der Füllstandshöhe erfolgt in der Regel durch Auswertung der Laufzeit eines Ultraschallimpulses, der an der Grenzfläche Wasser-Luft reflektiert und zum Sender zurückgestrahlt wird.The procedure for determining flow velocity and level in Wastewater pipes are known and are dealt with in various publications. When measuring flow velocity, two different methods are used used. For one, ultrasonic waves are diagonally in and against the Flow direction sent. When evaluating the speed of sound is considered unknown size eliminated. The other way is to determine the Flow rate by evaluating the Doppler effect. The measurement of Level is usually done by evaluating the runtime of a Ultrasound pulse that reflects at the water-air interface and to the transmitter is reflected back.
Die oben beschriebenen Verfahren beinhalten folgende Nachteile. Bei der Ermittlung der Strömungsgeschwindigkeit durch diagonal abgestrahlte Ultraschallwellen muß das Rohr vollständig durchströmt sein. Bei halb oder weniger gefüllten Rohren versagt das System. Die Bestimmung durch den Dopplereffekt ist ebenfalls kritisch, weil die stattfindende Frequenzänderung als Funktion der Schallgeschwindigkeit von Temperatur und Zusammensetzung des Meßmediums abhängt. Ein zusätzlicher Fehler ergibt sich bei der Bestimmung der Füllstandshöhe, wenn bei Auswertung der Laufzeit des Ultraschallimpulses die Schallgeschwindigkeit nicht bekannt ist.The methods described above have the following disadvantages. When determining the flow rate through diagonally emitted ultrasound waves must be Flow through the pipe completely. Failed with half or less filled pipes the system. The determination by the Doppler effect is also critical because the frequency change taking place as a function of the speed of sound of Temperature and composition of the measuring medium depends. An additional mistake results from the determination of the fill level when evaluating the runtime the speed of sound is not known.
Die Erfindung hat die Aufgabe, bekannte physikalische Meßprinzipien derart zu kombinieren, daß bei der Bestimmung der AbwassermengeThe object of the invention is to apply known physical measuring principles in this way combine that when determining the amount of wastewater
- 1. kein Einfluß durch Temperatur und Zusammensetzung des zu messenden Mediums entsteht,1. no influence by temperature and composition of the medium to be measured arises,
- 2. kein Einfluß durch die Füllstandhöhe im Meßrohr entsteht,2. there is no influence from the level in the measuring tube,
- 3. die Schallgeschwindigkeit über einen autarken Kanal kontinuierlich gemessen wird und dadurch für alle anderen Messungen als Bezugsgröße zur Verfügung steht, und3. the speed of sound is continuously measured via an autonomous channel and is therefore available as a reference for all other measurements, and
- 4. durch redundante Kanäle Fehlmessungen ausgeschlossen werden.4. incorrect measurements can be excluded by redundant channels.
Zur Verdeutlichung der folgenden Erläuterungen sei auf die Zeichnung im Anhang verwiesen.To clarify the following explanations, see the drawing in the appendix referred.
Die oben beschriebene Aufgabe wird durch den Einsatz von 5 Meßkanälen gelöst. Zwei Kanäle (W1 und W4) messen über Laufzeitbestimmung eines Schallimpulses die Füllstandshöhe. Die beiden Meßstellen liegen ca. 20 cm auseinander, so daß sich durch grobe Verschmutzungen, die sich zufällig über einer Meßstelle befinden, keine Beeinflussung der Messung ergeben. Die Wandler, die für die Kanäle W1 und W4 verwendet werden, sind SE-Wandler mit je einem Piezokristall für Sende- und Empfangssignal. Bevor der Schall die Grenzfläche zum Abwasserrohr erreicht, durchlaufen Sende- und Empfangssignale ein Kunststoffprisma.The task described above is achieved by using 5 measuring channels. Two channels (W1 and W4) measure the by determining the transit time of a sound pulse Level. The two measuring points are about 20 cm apart so that due to coarse soiling that happens to be over a measuring point, none Influence the measurement result. The converters for channels W1 and W4 are used are SE transducers, each with a piezo crystal for transmit and Received signal. Before the sound reaches the sewer pipe interface, transmit and receive signals pass through a plastic prism.
Um die beiden Füllstandsmessungen exakt durchzuführen, müssen die Schallgeschwindigkeiten im Abwasser sowie die im Kunststoffprisma bekannt sein. Zu diesem Zweck sind zwei weitere Meßkanäle (W2 und W5) aufgebaut. Sensor W2 ermittelt nur die Laufzeit der Signale innerhalb des Prismas. Aus bekannten Abmaßen kann die Schallgeschwindigkeit im Kunststoffe abhängig von der Temperatur des Abwassers berechnet werden.In order to carry out the two level measurements exactly, the Sound speeds in wastewater and those in plastic prism are known. To For this purpose, two further measuring channels (W2 and W5) are set up. Sensor W2 only determines the transit time of the signals within the prism. From known dimensions the speed of sound in plastics depending on the temperature of the Waste water can be calculated.
Sensor W5 ist getrennt in Sender und Empfänger. Gemessen wird die Laufzeit eines Signals zwischen den beiden Komponenten. Daraus läßt sich aus dem bekannten Abstand zwischen Sender und Empfänger die Schallgeschwindigkeit im Abwasser bestimmen. Da durch die Baugröße der Sensoren für Kanal W5 die Einbauhöhe über dem Rohrboden vorgegeben ist, ist diese Art der Kompensationsmessung nur bei Füllstandshöhen über einigen Millimetern verwendbar. Da im Regelfall zu Beginn der Messung diese Höhe überschritten wird, kann beim Absinken des Wasserstandes unterhalb besagter Meßhöhe mit dem dann schon vorliegendem Wert weiter gerechnet werden.Sensor W5 is separate in the transmitter and receiver. The runtime of a Signal between the two components. It can be seen from the known Distance between transmitter and receiver the speed of sound in the wastewater determine. Because of the size of the sensors for channel W5, the installation height above is specified for the tube sheet, this type of compensation measurement is only for Level heights over a few millimeters can be used. As a rule at the beginning of the Measurement of this height is exceeded when the water level drops below said measuring height, the value already present is then calculated will.
Abwasseraufkommen, die grundsätzlich unter die Meßhöhe für Kanal 5 fallen, sind so gering, daß für diese Fälle mit einem mittleren Wert für die Schallgeschwindigkeit kalkuliert werden kann.Wastewater volumes, which generally fall below the measuring height for channel 5 , are so low that in these cases a mean value for the speed of sound can be calculated.
Als Fünfter und Letzter ermittelt Sensor W5 über Dopplermessung die Strömungsgeschwindigkeit des Abwassers.The fifth and last sensor W5 determines the via Doppler measurement Waste water flow rate.
Aus den geometrischen Verhältnissen des Rohres kann unter Einbeziehung der ermittelten Meß- und Kompensationswerte das Volumen des Abwassers berechnet werden. Sämtliche Meßsignale werden digital zum Auswerterechner übertragen. Die Gesamtmenge des Abwassers wird über einen elektromechanischen Zähler manipulier sicher angezeigt.From the geometric conditions of the pipe, including the determined measurement and compensation values, the volume of the waste water is calculated will. All measurement signals are digitally transmitted to the evaluation computer. The Total amount of wastewater is manipulated using an electromechanical counter displayed safely.
Der mit der Erfindung erzielbare Vorteil liegt darin, daß mit dem vorgestellten Meßsystem ohne Einschränkungen jede auftretende Abwassermenge sicher und unabhängig von Temperatur, Meßhöhe und Zusammensetzung des Abwassers erfaßt werden kann. Durch die integrierten Kompensationskanäle werden Störungen durch grobe Verschmutzungen des Abwassers erkannt und berücksichtigt. Das Innere des Meßrohres ist komplett frei von jeglichen Meßhilfen, sämtliche Meßorgane werden bündig mit dem Rohrmantel montiert. Dadurch bietet das Meßsystem keine Möglichkeit durch Ablagerungen Einschränkungen in der Funktion zu erfahren.The advantage achievable with the invention is that with the presented Measuring system safely and without any amount of waste water occurring recorded regardless of temperature, measuring height and composition of the wastewater can be. The integrated compensation channels eliminate interference gross contamination of the waste water is recognized and taken into account. The inside of the Measuring tube is completely free of any measuring aids, all measuring organs are mounted flush with the pipe jacket. As a result, the measuring system does not offer any Possibility of functional restrictions due to deposits Experienced.
Claims (1)
Temperatur,
Zusammensetzung des Abwassers,
Mindestmenge des Abwassers sowie
Größe der Störpartikel
unabhängige Erfassung der Abwassermenge ermöglicht wird. Measurement of waste water quantities in private households and industrial companies, characterized in that one of. By the number of redundant measuring channels for level and by multiple compensation measurements
Temperature,
Wastewater composition,
Minimum amount of waste water as well
Size of the interfering particles
independent detection of the amount of waste water is made possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1995133875 DE19533875A1 (en) | 1995-09-13 | 1995-09-13 | Sewage effluent measurement in domestic and industrial premises |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1995133875 DE19533875A1 (en) | 1995-09-13 | 1995-09-13 | Sewage effluent measurement in domestic and industrial premises |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19533875A1 true DE19533875A1 (en) | 1997-03-20 |
Family
ID=7772028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1995133875 Withdrawn DE19533875A1 (en) | 1995-09-13 | 1995-09-13 | Sewage effluent measurement in domestic and industrial premises |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19533875A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015197792A1 (en) * | 2014-06-26 | 2015-12-30 | Continental Automotive Gmbh | Method for determining a liquid level and quality in a tank |
| EP3063513A2 (en) * | 2014-05-27 | 2016-09-07 | Continental Automotive GmbH | Apparatus and method for determining a level of a fluid surface in a fluid container |
| CN107653972A (en) * | 2017-10-30 | 2018-02-02 | 武汉圣禹排水系统有限公司 | A kind of device and the flow control methods based on the device and anti-down irrigation method on pipeline |
| CN107844150A (en) * | 2017-10-30 | 2018-03-27 | 武汉圣禹排水系统有限公司 | A kind of device and flow monitoring and maximum stream flow control method and anti-down irrigation method based on the device |
| DE102018216624B4 (en) | 2018-09-27 | 2022-12-08 | Vitesco Technologies Germany Gmbh | Method and device for determining the filling level and/or the quality of a fluid in a fluid container |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2703439B2 (en) * | 1977-01-28 | 1978-11-30 | Danfoss A/S, Nordborg (Daenemark) | Device for measuring physical quantities of a liquid with two ultrasonic transducers |
| DE3207357A1 (en) * | 1982-03-02 | 1983-09-15 | Josef 4620 Castrop Rauxel Prokein | Method and device for measuring the flow in open channels, particularly those carrying waste water |
| DE3314260A1 (en) * | 1982-06-04 | 1983-12-08 | 5000 Köln MSR Paul Mähler | Device for measuring the volume of liquid flowing per unit of time through an open conduit |
| DE3223393A1 (en) * | 1982-06-23 | 1983-12-29 | Kanalsanierung Hans Müller GmbH & Co KG, 3284 Schieder-Schwalenberg | Method and device for determining the flow rate in a liquid |
| DE3522616A1 (en) * | 1985-06-25 | 1987-01-08 | Jun Waldemar Tobler | Device for monitoring the water level in the sewage system of a building |
| DE3621427A1 (en) * | 1985-06-28 | 1987-01-22 | Simmonds Precision Products | MEASURING SYSTEM |
| DE3706776A1 (en) * | 1987-03-03 | 1988-09-15 | Ralf Schaefer | Method of determining the amount of a substance in a fluid and device for carrying out the method |
| DE8812511U1 (en) * | 1988-10-05 | 1988-11-17 | Schluff, Reinhold, Dipl.-Ing., 2304 Laboe | Device for measuring filling levels in liquids with capacitive proximity switches |
| US4787240A (en) * | 1987-08-31 | 1988-11-29 | Westinghouse Electric Corp. | Liquid measurement arrangement |
| DE4024947A1 (en) * | 1990-08-07 | 1992-02-13 | Stewing Verwaltungsgesellschaf | Procedure for treatment of waste water - involves continuously monitoring flow rate, ph, temp. and compsn. in activated sludge tank to control water treatment process |
| DE3809189C2 (en) * | 1987-03-20 | 1992-12-03 | Noriyoshi Sendai Miyagi Jp Chubachi | |
| WO1993003333A1 (en) * | 1991-07-26 | 1993-02-18 | Ads Environmental Services, Inc. | Velocity measurement system |
| US5311781A (en) * | 1990-10-09 | 1994-05-17 | Advanced Instrumentation Inc. | Flowmeter for object-bearing liquids |
| DE4320295A1 (en) * | 1993-01-25 | 1994-07-28 | Christian Dipl Ing Koelling | Method and device for measuring the flow in partially or fully filled pipes and open channels |
| US5463905A (en) * | 1993-02-23 | 1995-11-07 | Baird; James D. | Portable non-invasive flowmeter for partially filled pipe |
-
1995
- 1995-09-13 DE DE1995133875 patent/DE19533875A1/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2703439B2 (en) * | 1977-01-28 | 1978-11-30 | Danfoss A/S, Nordborg (Daenemark) | Device for measuring physical quantities of a liquid with two ultrasonic transducers |
| DE3207357A1 (en) * | 1982-03-02 | 1983-09-15 | Josef 4620 Castrop Rauxel Prokein | Method and device for measuring the flow in open channels, particularly those carrying waste water |
| DE3314260A1 (en) * | 1982-06-04 | 1983-12-08 | 5000 Köln MSR Paul Mähler | Device for measuring the volume of liquid flowing per unit of time through an open conduit |
| DE3223393A1 (en) * | 1982-06-23 | 1983-12-29 | Kanalsanierung Hans Müller GmbH & Co KG, 3284 Schieder-Schwalenberg | Method and device for determining the flow rate in a liquid |
| DE3522616A1 (en) * | 1985-06-25 | 1987-01-08 | Jun Waldemar Tobler | Device for monitoring the water level in the sewage system of a building |
| DE3621427A1 (en) * | 1985-06-28 | 1987-01-22 | Simmonds Precision Products | MEASURING SYSTEM |
| DE3706776A1 (en) * | 1987-03-03 | 1988-09-15 | Ralf Schaefer | Method of determining the amount of a substance in a fluid and device for carrying out the method |
| DE3809189C2 (en) * | 1987-03-20 | 1992-12-03 | Noriyoshi Sendai Miyagi Jp Chubachi | |
| US4787240A (en) * | 1987-08-31 | 1988-11-29 | Westinghouse Electric Corp. | Liquid measurement arrangement |
| DE8812511U1 (en) * | 1988-10-05 | 1988-11-17 | Schluff, Reinhold, Dipl.-Ing., 2304 Laboe | Device for measuring filling levels in liquids with capacitive proximity switches |
| DE4024947A1 (en) * | 1990-08-07 | 1992-02-13 | Stewing Verwaltungsgesellschaf | Procedure for treatment of waste water - involves continuously monitoring flow rate, ph, temp. and compsn. in activated sludge tank to control water treatment process |
| US5311781A (en) * | 1990-10-09 | 1994-05-17 | Advanced Instrumentation Inc. | Flowmeter for object-bearing liquids |
| WO1993003333A1 (en) * | 1991-07-26 | 1993-02-18 | Ads Environmental Services, Inc. | Velocity measurement system |
| DE4320295A1 (en) * | 1993-01-25 | 1994-07-28 | Christian Dipl Ing Koelling | Method and device for measuring the flow in partially or fully filled pipes and open channels |
| US5463905A (en) * | 1993-02-23 | 1995-11-07 | Baird; James D. | Portable non-invasive flowmeter for partially filled pipe |
Non-Patent Citations (4)
| Title |
|---|
| Arbeitsberichte der ATV - Arbeitsgruppe 1.2.5 "Quantitative und qualitative Abflußmessung". In: Korrespondenz - Abwasser, 1987, H.11, S.1205-1214 * |
| JP 1-31021 A.,In: Patents Abstrats of Japan, P-873,May 18,1989,Vol.13,No.212 * |
| Wasser + Boden, 11793, S.905 * |
| Wasserwirtschaft 84, 1994, 5, S.295 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3063513A2 (en) * | 2014-05-27 | 2016-09-07 | Continental Automotive GmbH | Apparatus and method for determining a level of a fluid surface in a fluid container |
| WO2015197792A1 (en) * | 2014-06-26 | 2015-12-30 | Continental Automotive Gmbh | Method for determining a liquid level and quality in a tank |
| CN106461450A (en) * | 2014-06-26 | 2017-02-22 | 大陆汽车有限责任公司 | Method for determining the level and mass of liquid in a tank |
| US10234323B2 (en) | 2014-06-26 | 2019-03-19 | Continental Automotive Gmbh | Method for determining a liquid level and quality in a tank |
| CN106461450B (en) * | 2014-06-26 | 2019-11-29 | 大陆汽车有限责任公司 | Method for determining the level and mass of liquid in a tank |
| CN107653972A (en) * | 2017-10-30 | 2018-02-02 | 武汉圣禹排水系统有限公司 | A kind of device and the flow control methods based on the device and anti-down irrigation method on pipeline |
| CN107844150A (en) * | 2017-10-30 | 2018-03-27 | 武汉圣禹排水系统有限公司 | A kind of device and flow monitoring and maximum stream flow control method and anti-down irrigation method based on the device |
| DE102018216624B4 (en) | 2018-09-27 | 2022-12-08 | Vitesco Technologies Germany Gmbh | Method and device for determining the filling level and/or the quality of a fluid in a fluid container |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2356408B1 (en) | Method and device for calibrating measuring transducers of ultrasonic flow meters | |
| DE69611081T2 (en) | IMPROVEMENTS RELATING TO IMPULSE Echo DISTANCE MEASUREMENT | |
| DK147531B (en) | APPLICATION FOR MEASUREMENT OF THE FLOW AMOUNT OR THE RELATED PARAMETERS IN A FLUID, AS WITH FREE FLUID SURFACE FLOWS IN A CHANNEL, WITH TWO ULTRA SOUND CONVERTERS | |
| WO1991002950A1 (en) | Measuring device and process for determining the level in fluid containers, preferably for tank installations, and use of a sound waveguide | |
| EP3298359A1 (en) | Method for determining a pipe wall resonant frequency, and clamp-on ultrasonic flowmeter | |
| GB1453789A (en) | Inside diameter outside diameter and wall thickness tube gauge | |
| DE69417709T2 (en) | Method and device for the detection of multi-phase boundary layers with ultrasonic waves | |
| DE10103056A1 (en) | Quantity measuring system and probe | |
| DE4040190A1 (en) | METHOD FOR MEASURING THE RUN TIME OF ULTRASONIC IN THE IMPULSE REFLECTION METHOD | |
| DE202019107029U1 (en) | Acoustic distance measuring circuit | |
| EP2440888B1 (en) | Method for measuring a measurement variable | |
| WO2003102512A1 (en) | Ultrasonic measurement of the running time and quantity for detecting the concentration of particles in a flowing fluid | |
| DE10258997A1 (en) | Clamp-on ultrasonic flow meter for measuring mass flow rates in pipes or conduits, uses evaluation and control unit to optimize transducer positions based on comparison of a measurement value with a reference value | |
| DE19533875A1 (en) | Sewage effluent measurement in domestic and industrial premises | |
| EP0871849A1 (en) | Process and device for determining the level of a fluid using ultrasonic pulses | |
| CN204009413U (en) | A kind of automatic monitoring device for discharge of wastewater | |
| DE102004031274A1 (en) | Method for calibrating ultrasonic clamp-on flowmeters and ultrasonic clamp-on flowmeter according to the transit time difference method | |
| DE10325953A1 (en) | Ultrasonic process to detect interface levels between different liquid chemical, pharmaceutical or oil-based substances in single column | |
| DE102018006084B3 (en) | Measuring method and measuring arrangement for measuring the particle size distribution and particle concentration in a liquid-flow line | |
| DE69400296T2 (en) | Method and device for measuring the flow in partially or completely filled pipes and in open channels | |
| DE102012207732A1 (en) | Method for determining ultrasonic velocity of liquid contained in fuel tank that is utilized for operating vehicle, involves computing ultrasound velocity based on measured running time and calibrated distance of reference point | |
| DE10057188A1 (en) | Ultrasonic flow meter with temperature compensation provided by temperature sensor in parallel with ultrasonic measurement transducers | |
| DE10221771A1 (en) | Ultrasonic transducer system is used to measure the flow rate of a fluid within a channel or duct based upon the propagation of the wave signal | |
| DE102012211848B4 (en) | level measurement | |
| DE102022121414A1 (en) | Ultrasonic flow sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8181 | Inventor (new situation) |
Free format text: ERFINDER IST ANMELDER |
|
| 8139 | Disposal/non-payment of the annual fee |