DE9416497U1 - Device for volume measurement of water meters according to PTB requirement - Google Patents

Device for volume measurement of water meters according to PTB requirement

Info

Publication number
DE9416497U1
DE9416497U1 DE9416497U DE9416497U DE9416497U1 DE 9416497 U1 DE9416497 U1 DE 9416497U1 DE 9416497 U DE9416497 U DE 9416497U DE 9416497 U DE9416497 U DE 9416497U DE 9416497 U1 DE9416497 U1 DE 9416497U1
Authority
DE
Germany
Prior art keywords
ptb
water meters
requirement
volume measurement
detection according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE9416497U
Other languages
German (de)
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.)
SPRAVE MICHAEL
Original Assignee
SPRAVE MICHAEL
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 SPRAVE MICHAEL filed Critical SPRAVE MICHAEL
Priority to DE9416497U priority Critical patent/DE9416497U1/en
Publication of DE9416497U1 publication Critical patent/DE9416497U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/04—Special adaptations of driving means
    • 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
    • G01F1/05—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 using mechanical effects
    • G01F1/06—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 using mechanical effects using rotating vanes with tangential admission
    • G01F1/065—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 using mechanical effects using rotating vanes with tangential admission with radiation as transfer means to the indicating device, e.g. light transmission
    • 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
    • G01F1/05—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 using mechanical effects
    • G01F1/06—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 using mechanical effects using rotating vanes with tangential admission
    • G01F1/075—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 using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
    • G01P5/06—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes
    • G01P5/07—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes with electrical coupling to the indicating device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Description

Beschreibung:Description:

Vorrichtung zur Volumenerfassung von Wasserzähler-Trockenläufern gemäß PTB-Anforderungen.Device for volume measurement of dry-running water meters according to PTB requirements.

Wasserzähler-Trockenläufer werden üblicherweise zur Erfassung von Wasserverbräuchen in Wohnungen eingesetzt. Auch als Volumenmeßteil von Wärmezählern sind sie üblich.Dry-running water meters are usually used to record water consumption in homes. They are also commonly used as volume measuring parts of heat meters.

Sie besteht aus zwei Komponenten:It consists of two components:

1. Dem hydraulischen Geber.1. The hydraulic sensor.

Das durchströmende Wasser betätigt ein Flügelrad mit sternförmig angeordneten Flügeln. Dieses Flügelrad trägt an einer Achsseite einen kleinen Magneten.The water flowing through it activates an impeller with star-shaped blades. This impeller has a small magnet on one side of the axle.

2. Das trockenlaufende mechanische Zählwerk wird durch einen zweiten Magneten angetrieben. Dieser bildet mit dem Flügelradmagneten eine Magnetkupplung.2. The dry-running mechanical counter is driven by a second magnet. This forms a magnetic coupling with the impeller magnet.

Die Drehung des Flügelrades wird somit 1 : 1 zum Volumenzählwerk übertragen.The rotation of the impeller is thus transmitted 1:1 to the volume counter.

Diese rein mechanische Anordnung ist zwar preiswert und zuverlässig, jedoch ist es nicht möglich, die Verbrauchsdaten an einem vorgegebenen Stichtag automatisch auszulesen und abzuspeichern, um diese an einem beliebigen Ablesedatum zur. Verfugung zu haben.Although this purely mechanical arrangement is inexpensive and reliable, it is not possible to automatically read and save the consumption data on a specified date in order to have it available on any reading date.

Weiterhin ist auch eine automatische Fernabfrage, wie diese an vergleichbaren Wärme-, Elektro- und Gaszählern bereits praktiziert wird, mit einem mechanischen Zählwerk nicht zu realisieren. Um jedoch ein elektronisches Rechenwerk, das diese Vorteile bereits beinhaltet, verwenden zu können, müssen die Systeme zur Volumenerfassung bestimmte Voraussetzungen erfüllen, um die Zulassung gemäß den PTB-Anforderungen zu erhalten. Im Wesentlichen ist dies die Drehrichtungerkennung, auch bei Ausfall eines Sensors. Dies bedeutet, daß mindestens drei Sensoren eingesetzt werden müssen.Furthermore, an automatic remote query, as is already practiced on comparable heat, electricity and gas meters, cannot be implemented with a mechanical counter. However, in order to be able to use an electronic calculator that already includes these advantages, the volume measurement systems must meet certain requirements in order to receive approval in accordance with the PTB requirements. Essentially, this is the detection of the direction of rotation, even if a sensor fails. This means that at least three sensors must be used.

Bisher bekannte Lösungen, wie Induktiv-, Kapazitive- oder Leitwerterfassung haben immer eine Veränderung des hydraulischen Gebers zur Folge, eine erneute PTB-Zulassung ist damit unumgänglich. Außerdem sind alle diese Systeme mit erheblichen Verteuerungen des Wasserzählers verbunden.Previously known solutions, such as inductive, capacitive or conductivity measurement, always result in a change to the hydraulic sensor, which means that renewed PTB approval is unavoidable. In addition, all of these systems are associated with a significant increase in the cost of the water meter.

Eine optische Abtastung würde zwar möglicherweise keine Veränderung des hydraulischen Gebers bedeuten, jedoch ist durch den hohen Stromverbauch einer Lichtschranke die Verwendung einer Kleingerätebatterie nicht möglich.Although optical scanning might not result in any change to the hydraulic sensor, the high power consumption of a light barrier means that the use of a small device battery is not possible.

Die nachfolgen beschriebene Anordnung umgeht diesen Nachteil und führt zu einer vergleichsweise kostengünstigen Lösung unter Beachtung der PTB-Anforderungen:The arrangement described below avoids this disadvantage and leads to a comparatively cost-effective solution while complying with the PTB requirements:

Die Magnetkupplung (1) bleibt bestehen. Die Umdrehungdes Flügelrades werden in den Trockenraum des Zählwerkes (2) 1 : 1 übertragen, jedoch treibt der Gegenmagnet lediglich eine Lochscheibe (3) an. Eine Infrarotlichtschranke (4) setzt die Umdrehungen in elektronische Signale um. Diese Signale entsprechen dem momentanen Durchfluß und sind somit ein Maß für das Wasservolumen.The magnetic coupling (1) remains. The rotation of the impeller is transferred 1:1 into the dry chamber of the counter (2), but the counter magnet only drives a perforated disk (3). An infrared light barrier (4) converts the rotations into electronic signals. These signals correspond to the current flow and are therefore a measure of the water volume.

Um stromsparend zu arbeiten werden die Sendedioden mit sehr niedrigem Strom und kurzen Impulsen betrieben. In Verbindung mit dem Prozessor des Zählwerkes ist es durch eine geeignete Software und einer stromsparenden Logikschaltung gelungen, den Energiebedarf der gesamten Anordnung auf etwa 0,5 Ah (Amperestunden) über den Zeitraum von 7 Betriebsjahren zu reduzieren. Hierbei ist auch berücksichtigt, daß aufgrund der PTB-Vorschriften mit mindestens drei Lichtschranken gearbeitet wird.In order to operate in an energy-saving manner, the transmitting diodes are operated with very low current and short pulses. In conjunction with the counter's processor, suitable software and an energy-saving logic circuit have made it possible to reduce the energy requirement of the entire arrangement to around 0.5 Ah (ampere hours) over a period of 7 years of operation. This also takes into account the fact that at least three light barriers are used due to PTB regulations.

Da als Lichtschranken sehr preiswerte Sendedioden und Empfängertransistoren im Infrarotbereich gewählt werden, ist die gesamte Volumenerfassung äußerst preiswert herzustellen. Außerdem sind keinerlei änderungen an den hydraulischen Gebern durchzuführen.Since very inexpensive transmitting diodes and receiving transistors in the infrared range are chosen as light barriers, the entire volume measurement can be manufactured extremely inexpensively. In addition, no changes need to be made to the hydraulic sensors.

Der Aufbau der optischen Volumenerfassung ist vergleichsweise in der angefügten Skizze dargestellt.The structure of the optical volume detection is shown comparatively in the attached sketch.

Claims (4)

• · Schutzansprüche:• · Protection claims: 1. Erfassung von Volumen an hydraulischen Gebern (Wasserzählern), deren Flügelradumdrehungen magnetisch abtastbar sind, dadurch gekennzeichnet, daß die Erfassung der Drehzahl des Flügelrades außerhalb des hydraulischen Teils liegt und optisch erfolgt.1. Recording of volumes on hydraulic sensors (water meters) whose impeller revolutions can be magnetically sensed, characterized in that the recording of the speed of the impeller is outside the hydraulic part and is carried out optically. 2. Drehzahlerfassung nach Anspruch 1, dadurch gekennzeichnet, daß sowohl Drehrichtung als auch Redundanz durch den Einsatz von mindestens drei Lichtschranken gemäß PTB-Anforderungen sichergestellt ist.2. Speed detection according to claim 1, characterized in that both the direction of rotation and redundancy are ensured by the use of at least three light barriers in accordance with PTB requirements. 3. Drehzahlerfassung nach Anspruch 1, dadurch gekennzeichnet, daß dieses Gerät äußerst stromsparend und mindestens sieben Jahre ohne Netzversorgung arbeitet und für diesen Zeitraum mit der eingebauten Batterie von 3v"/2Ah auskommt.3. Speed detection according to claim 1, characterized in that this device is extremely energy-efficient and operates for at least seven years without a mains supply and can operate for this period with the built-in 3v"/2Ah battery. 4. Drehzahlerfassung nach Anspruch 1, dadurch gekennzeichnet, daß alle z. Zt. üblichen und zugelassenen hydraulischen Geber mit magnetischer Drehzahlübertragung ohne Änderung benutzt werden können.4. Speed detection according to claim 1, characterized in that all currently common and approved hydraulic sensors with magnetic speed transmission can be used without modification.
DE9416497U 1994-10-13 1994-10-13 Device for volume measurement of water meters according to PTB requirement Expired - Lifetime DE9416497U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9416497U DE9416497U1 (en) 1994-10-13 1994-10-13 Device for volume measurement of water meters according to PTB requirement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9416497U DE9416497U1 (en) 1994-10-13 1994-10-13 Device for volume measurement of water meters according to PTB requirement

Publications (1)

Publication Number Publication Date
DE9416497U1 true DE9416497U1 (en) 1994-12-08

Family

ID=6914847

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9416497U Expired - Lifetime DE9416497U1 (en) 1994-10-13 1994-10-13 Device for volume measurement of water meters according to PTB requirement

Country Status (1)

Country Link
DE (1) DE9416497U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19538163C1 (en) * 1995-10-13 1997-03-27 Wehrle E Gmbh Rotation rate and rotation direction detection method e.g. for water meter
DE102008018632A1 (en) * 2008-04-11 2009-10-15 Kolesov, Vladimir A. Flowmeter for measuring flow rate of fluid and gas in pipeline of turbine, has impeller including magnetic axle that is rotatably arranged in bearings, which are designed in form of two cylindrical permanent magnets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19538163C1 (en) * 1995-10-13 1997-03-27 Wehrle E Gmbh Rotation rate and rotation direction detection method e.g. for water meter
DE102008018632A1 (en) * 2008-04-11 2009-10-15 Kolesov, Vladimir A. Flowmeter for measuring flow rate of fluid and gas in pipeline of turbine, has impeller including magnetic axle that is rotatably arranged in bearings, which are designed in form of two cylindrical permanent magnets

Similar Documents

Publication Publication Date Title
DE2942421A1 (en) ROTATIONAL SENSOR AND METHOD FOR ADAPTING A MEASURING DEVICE ROTOR FOR REMOTELY DISPLAYING ELECTRICAL SIGNALS ACCORDING TO THE NUMBER OF REVOLUTIONS OF A MEASURING DEVICE ROTOR
DE2911800A1 (en) PROGRAMMABLE AC ENERGY MEASURING DEVICE WITH RADIATION-SENSITIVE EXTERNAL DATA INTERFACE
DE2711926A1 (en) SALES FACILITY
CN101349573A (en) Photoelectric coding counting device and photoelectric coding counter
EP0318691A2 (en) Sensor for consumption measuring in a domestic system
DE4428996A1 (en) water meter
DE9416497U1 (en) Device for volume measurement of water meters according to PTB requirement
DE2458713A1 (en) REGISTRATION DEVICE FOR ENERGY METER
CN106370252A (en) Electronic type remote-transmission diaphragm gas meter system and measurement monitoring method thereof
WO2008040442A1 (en) Volume meter for flowing media with selective coupling between counter system and calculating unit
EP0769681B1 (en) Water meter
EP1890116A1 (en) Tamperproof liquid flow meter
DE60108397T2 (en) CONSUMPTION COUNTERS
DE2635346A1 (en) Data read=out facility for energy consumption meters - has internally stored data displayed via LEDs and optically interrogated
DE202005019843U1 (en) Meter reading test code generation unit fits in additional housing attached to meter or separate housing with electrical of fibre optic connection
US3228243A (en) Fluid flow meter
CN208224787U (en) Document drawer open record device
DE102014204371A1 (en) Method for operating a device for detecting a physical or chemical quantity
CN2578794Y (en) Intellectual metering instrument
CN212620933U (en) Intelligent flow meter with direct reading color character code
DE2631509A1 (en) PROCEDURE FOR THE INDEPENDENT CHECK OF COUNTERS
DE9110946U1 (en) Wind measuring device (anemometer)
Durham et al. Electronic acquisition of hydrologic data from intensively instrumented hillslopes
CN2233562Y (en) Electric card value-storage gas meter
DE20122009U1 (en) Drinking mug with drink quantity display and calculation of overall quantity of liquid drunk over defined time interval